Installation for filling several pressure reservoirs, especially in motor vehicles

Claim 2

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for each reservoir for moving said switching valve means to a blocking position in response to a pressure drop in at least a corresponding one of the reservoirs.

Claim 3

An installation according to claim 1, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs.

Claim 4

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said stOrage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein said control means includes means for causing a counterpressure build up in a line leading to said switching valve means in response to said pressure drop in said at leat one of the reservoirs, said counterpressure build up being effective to move said switching valve means to said blocking position, said switching valve means being maintained in an open position by the pressure in said return line means when said reservoirs are filled and maintained at desired operating pressures.

Claim 5

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said stOrage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein said control means includes means for causing a counterpressure build up in a line leading to said switching valve means in response to said pressure drop in said at leat one of the reservoirs, said counterpressure build up being effective to move said switching valve means to said blocking position, said switching valve means being maintained in an open position by the pressure in said return line means when said reservoirs are filled and maintained at desired operating pressures.

Claim 6

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between said reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, wherein said control means includes a control conduit connected to the return line means upstream of the switching valve means, a first branch of said control conduit leading to a rear side of the switching valve means and a second branch of said control conduit leading into said storage tank means by way of stop slide valve means controlled by the pressure in said at least one of the reservoirs, said stop slide valve means being movable into a position blocking said second branch in response to reduction in pressure in said at least one of the reservoirs, and wherein blockage of said second branch by said stop slide valve means results in a counterpressure build up in said first branch which moves said switching valve means to said blocking position.

Claim 7

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between said reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, wherein said control means includes a control conduit connected to the return line means upstream of the switching valve means, a first branch of said control conduit leading to a rear side of the switching valve means and a second branch of said control conduit leading into said storage tank means by way of stop slide valve means controlled by the pressure in said at least one of the reservoirs, said stop slide valve means being movable into a position blocking said second branch in response to reduction in pressure in said at least one of the reservoirs, and wherein blockage of said second branch by said stop slide valve means results in a counterpressure build up in said first branch which moves said switching valve means to said blocking position.

Claim 8

An installation according to claim 4, wherein said drop slide valve means includes a stop slide valve associated with each of the reservoirs, each of said stop slide valves being biased toward a position blocking said second branch by resilient means, and wherein a connection line is provided between each stop slide valve and associated reservoir for communicating respective reservoir pressures to said respective stop slide valves such that said reservoir pressures move said stop slide valves toward unblocking positions when said reservoirs are filled to normal desired pressures.

Claim 9

An installation according to claim 5, wherein throttle means are arranged in said control conduit between said return line means and the connection of said first branch to said switching valve means.

Claim 10

An installation according to claim 5, further comprising a second switching valve means arranged in said filling pipe means for dividing said filling pipe means and associated reservoirs into preferred and non-preferred sections, and a second control conduit for controlling said second switching valve means, said second control conduit incLuding a first branch connected to the preferred section of the filling pipe means and a second branch leading to said storage tank means by way of respective stop slide valves associated with each of the reservoirs in the preferred section, wherein said first branch of said second control conduit and said second switching valve means communicate said preferred and non-preferred sections during normal operations with filled reservoirs, and wherein said stop slide valves in said second branch of said second control conduit are moved to their blocking positions in response to a pressure drop in respective ones of the reservoirs in said preferred section thereby causing a counterpressure which moves said second switching valve means to a blocking position to prevent further supply of fluid to reservoirs in said non-preferred section until the pressure has been restored to the preferred section.

Claim 11

An installation according to claim 7, wherein the stop slide valves for each reservoir in said preferred section are constructed as respective unitary stop slide valves for blocking flow in both said first and second control conduits in response to a pressure drop in a respective reservoir.

Claim 12

An installation according to claim 8, wherein a throttle is disposed in the first branch of the second control conduit between said filling pipe means and a control pressure inlet to said second switching valve means.

Claim 13

An installation according to claim 7, wherein a throttle is disposed in the first branch of the second control conduit between said filling pipe means and a control pressure inlet to said second switching valve means.

Claim 14

An installation according to claim 7, wherein a first and second of said reservoirs are connected to said filling pipe means by respective separate first and second connecting lines, wherein a flow divider is interposed between said first and second connecting lines to equalize the flow therein, and wherein a regulating throttle is positioned in each of said first and second connecting lines.

Claim 15

An installation according to claim 11, wherein said flow divider is formed by a piston slide valve with two separate control edges for controlling the flow through said respective first and second connecting lines, movement of said piston slide valve being controlled by the pressure in said first and second connecting lines so as to equalize the flow in said first and second connecting lines.

Claim 16

An installation according to claim 12, wherein a first end face of said piston slide valve is in communication with said first connecting line by way of the associated regulating throttle, wherein a second oppositely facing end face of said piston slide valve is in communication with said second connecting line by way of the associated regulating throttle, and wherein said piston slide valve is maintained in a central position by similar spring means acting on said first and second end faces.

Claim 17

An installation according to claim 13, wherein the stop slide valves for each reservoir in said preferred section are constructed as respective unitary stop slide valves for blocking flow in both said first and second control conduits in response to a pressure drop in a respective reservoir.

Claim 18

An installation according to claim 14, further comprising a warning device connected to the flow divider and including means emitting a warning signal if the flow divider loses its equilibrium.

Claim 19

An installation according to claim 11, wherein a warning device is provided at the switching valve means which can be switched into a readiness condition when the switching valve means is in a closed blocking position and which can be triggered by means of pick-up devices for the pressure differences in the reservoirs, if this difference is zero or negative.

Claim 20

An installation according to claim 11, wherein at least one of said reservoirs supplies a brake cycle of an automotive vehicle, and wherein at least one other of said reservoirs supplies a vehicle suspension syStem.

Claim 21

An installation according to claim 5, wherein a warning device is provided at the switching valve means which includes means for emitting a warning signal in response to movement of the switching valve means to the blocking position.

Claim 22

An installation according to claim 7, wherein at least one of said reservoirs supplies a brake cycle of an automotive vehicle, and wherein at least one other of said reservoirs supplies a vehicle suspension system.

Claim 23

An installation according to claim 4, wherein throttle means are arranged in said control conduit between said return line means and the connection of said first branch to said switching valve means.

Claim 24

An installation according to claim 4, further comprising a second switching valve means arranged in said filling pipe means for dividing said filling pipe means and associated reservoirs into preferred and non-preferred sections, and a second control conduit for controlling said second switching valve means, said second control conduit including a first branch connected to the preferred section of the filling pipe means and a second branch leading to said storage tank means by way of respective stop slide valves associated with each of the reservoirs in the preferred section, wherein said first branch of said second control conduit and said second switching valve means communicate said preferred and non-preferred sections during normal operations with filled reservoirs, and wherein said stop slide valves in said second branch of said second control conduit are moved to their blocking positions in response to a pressure drop in respective ones of the reservoirs in said preferred section thereby causing a counterpressure which moves said second switching valve means to a blocking position to prevent further supply of fluid to reservoirs in said non-preferred section until the pressure has been restored in the preferred section.

Claim 25

An installation according to claim 21, wherein the stop slide valves for each reservoir in said preferred section are constructed as respective unitary stop slide valves for blocking flow in both said first and second control conduits in response to a pressure drop in a respective reservoir.

Claim 26

An installation according to claim 22, wherein a throttle is disposed in the first branch of the second control conduit between said filling pipe means and a control pressure inlet to said second switching valve means.

Claim 27

An installation according to claim 4, wherein a first and second of said reservoirs are connected to said filling pipe means by respective separate first and second connecting lines, wherein a flow divider is interposed between said first and second connecting lines to equalize the flow therein, and wherein a regulating throttle is positioned in each of said first and second connecting lines.

Claim 28

An installation according to claim 24, wherein said flow divider is formed by a piston slide valve with two separate control edges for controlling the flow through said respective first and second connecting lines, movement of said piston slide valve being controlled by the pressure in said first and second connecting lines so as to equalize the flow in said first and second connecting lines.

Claim 29

An installation according to claim 25, wherein a first end face of said piston slide valve is in communication with said first connecting line by way of the associated regulating throttle, wherein a second oppositely facing end face of said piston slide valve is in communication with said second connecting line by way of the associated regulating throttle, and wherein said piston slide vave is maintained in a central position by similar spring means acting on said first and second end faces.

Claim 30

An installation according to claim 24, further comprising a warning device connected to the flow divider and including means emitting a warning signal if the flow divider loses its equilibrium.

Claim 31

An installation for filling a plurality of fluid pressure reservoirs Which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, wherein said installation further comprises a second switching valve means arranged in said filling means for dividing said filling pipe means and associated reservoirs into preferred and non-preferred sections, and a second control conduit for controlling said second switching valve means, said second control conduit including a first branch connected to the preferred section of the filling pipe means and a second branch leading to said storage tank means by way of respective stop slide valves associated with each of the reservoirs in the preferred section, wherein said first branch of said second control conduit and said second switching valve means communicate said preferred and non-preferred sections during normal operations with filled reservoirs, and wherein said stop slide velves in said second branch of said second control conduit are moved to their blocking positions in response to a pressure drop in respective ones of the reservoirs in said preferred section thereby causing a counterpressure which moves said second switching valve means to a blocking position to prevent further supply of fluid to reservoirs in said non-preferred section until the pressure has been restored to the preferred section.

Claim 32

An installation for filling a plurality of fluid pressure reservoirs Which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, wherein said installation further comprises a second switching valve means arranged in said filling means for dividing said filling pipe means and associated reservoirs into preferred and non-preferred sections, and a second control conduit for controlling said second switching valve means, said second control conduit including a first branch connected to the preferred section of the filling pipe means and a second branch leading to said storage tank means by way of respective stop slide valves associated with each of the reservoirs in the preferred section, wherein said first branch of said second control conduit and said second switching valve means communicate said preferred and non-preferred sections during normal operations with filled reservoirs, and wherein said stop slide velves in said second branch of said second control conduit are moved to their blocking positions in response to a pressure drop in respective ones of the reservoirs in said preferred section thereby causing a counterpressure which moves said second switching valve means to a blocking position to prevent further supply of fluid to reservoirs in said non-preferred section until the pressure has been restored to the preferred section.

Claim 33

An installation according to claim 28, wherein said control means includes means for causing a counterpressure build up in a line leading to said switching valve means in response to said pressure drop in said at least one of the reservoirs, said counterpressure build up being effective to move said switching valve means to said blocking position, said switching valve means being maintained in an open position by the pressure in said return line means when said reservoirs are filled and maintained at desired operating pressures.

Claim 34

An installation according to claim 28, wherein a throttle is disposed in the first branch of the second control conduit between said filling pipe means and a control pressure inlet to said second switching valve means.

Claim 35

An installation according to claim 28, wherein said preferred section includes at least one reservoir supplying a brake cycle for an automotive vehicle, and wherein said non-preferred section includes at least one reservoir supplying a vehicle suspension system.

Claim 36

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for removing said switching valve means to a blocking position iN response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, wherein a first and second of said reservoirs are connected to said filling pipe means by respective separate first and second connecting lines, wherein a flow divider is interposed between said first and second connecting lines to equalize the flow therein, and wherein a regulating throttle is positioned in each of said first and second connecting lines.

Claim 37

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for removing said switching valve means to a blocking position iN response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, wherein a first and second of said reservoirs are connected to said filling pipe means by respective separate first and second connecting lines, wherein a flow divider is interposed between said first and second connecting lines to equalize the flow therein, and wherein a regulating throttle is positioned in each of said first and second connecting lines.

Claim 38

An installation according to claim 32, wherein said flow divider is formed by a piston slide valve with two separate control edges for controlling the flow through said respective first and second connecting lines, movement of said piston slide valve being controlled by the pressure in said first and second connecting lines so as to equalize the flow in said first and second connecting lines.

Claim 39

An installation according to claim 33, wherein a first end face of said piston slide valve is in communication with said first connecting line by way of the associated regulating throttle, wherein a second oppositely facing end face of said piston slide valve is in communication with said second connecting line by way of the associated regulating throttle, and wherein said piston slide valve is maintained in a central position by similar spring means acting on said first and second end faces.

Claim 40

An installation according to claim 32, further comprising a warning device connected to the flow divider and including means emitting a warning signal if the flow divider loses its equilibrium.

Claim 41

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between said reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response in a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein a warning device is provided at the switching valve means which includes means for emitting a warning signal in response to movement of the switching valve means to the blocking position.

Claim 42

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between said reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response in a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein a warning device is provided at the switching valve means which includes means for emitting a warning signal in response to movement of the switching valve means to the blocking position.

Claim 43

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valvE means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein a warning device is provided which includes means for emitting a warning signal in response to detected pressure changes in at least one of said reservoirs.

Claim 44

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valvE means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein a warning device is provided which includes means for emitting a warning signal in response to detected pressure changes in at least one of said reservoirs.

Claim 45

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve member between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein a warning device is provided at the switching valve means which can be switched into a readiness condition when the switching valve means is in a closed blocking position and which can be triggered by means of pick-up devices for the pressure differences in the reservoirs, if this difference is zero or negative.

Claim 46

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve member between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein a warning device is provided at the switching valve means which can be switched into a readiness condition when the switching valve means is in a closed blocking position and which can be triggered by means of pick-up devices for the pressure differences in the reservoirs, if this difference is zero or negative.

Claim 47

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs; and wherein at least one of said reservoirs supplies a brake cycle of an automotive vehicle, and wherein at least one other of said reservoirs supplies a vehicle suspension system.

Claim 48

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs; and wherein at least one of said reservoirs supplies a brake cycle of an automotive vehicle, and wherein at least one other of said reservoirs supplies a vehicle suspension system.

Claim 49

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein said reservoirs include separate reservoirs for vehicle braking cycles, for a vehicle suspension system, and for a vehicle power steering system.

Claim 50

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; said installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in at least one of the reservoirs, wherein said return line means is in bypassing relationship to said reservoirs such that movement of said switching valve means to said blocking position results in increased pressure and consequent fluid supply in said filling pipe means leading to said reservoirs, and wherein said reservoirs include separate reservoirs for vehicle braking cycles, for a vehicle suspension system, and for a vehicle power steering system.

Claim 51

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; and installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in any one of the reservoirs.

Claim 52

An installation for filling a plurality of fluid pressure reservoirs which supply different pressure cycles associated with automotive vehicle operations and the like; and installation comprising: common filling pipe means leading to all of said reservoirs by way of a check valve means between each reservoir and said filling pipe means, storage tank means, pump means for pumping fluid from said storage tank means to said filling pipe means, return line means connected between said filling pipe means and said storage tank means, switching valve means in said return line means for selectively blocking said return line means, and control means for moving said switching valve means to a blocking position in response to a pressure drop in any one of the reservoirs.