Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
248 words
Fluidic repeater comprising transmitter means adapted for connection to a source of pressure fluid and having an output adapted to deliver pressure fluid at variable pressure according to the setting of the transmitter, responder means comprising a piston and cylinder connected to the output of the transmitter for relative axial movement of the piston and cylinder in response to variation in the pressure of the transmitter output, said transmitter comprising: a. a pair of fluid passages each adapted at a certain location for connection to source of pressure fluid having a drooping pressure versus rate of flow characteristic, and b. venting means for said fluid passages comprising an opening in each passage downstream from said location relative to said source adapted for connection to a fluid reservoir of lower pressure then said source and obstructor means for varying the degree of venting of said fluid passages through said openings, said openings of said fluid passages being side ports in a vent cylinder and said obstructor means comprising a spool disposed in the vent cylinder having land means for variably covering said ports in accordance with the axial position of the spool, said output of the transmitter being provided by said fluid passages, said axial movement of the responder means piston being in response to pressure difference in said fluid passages, and feedback means actuated by said responder means for variably venting the output of said transmitter to negate pressure change created by change of setting of the transmitter.
Claim 2
Dependent Claim
248 words
Fluidic repeater comprising transmitter means adapted for connection to a source of pressure fluid and having an output adapted to deliver pressure fluid at variable pressure according to the setting of the transmitter, responder means comprising a piston and cylinder connected to the output of the transmitter for relative axial movement of the piston and cylinder in response to variation in the pressure of the transmitter output, said transmitter comprising: a. a pair of fluid passages each adapted at a certain location for connection to source of pressure fluid having a drooping pressure versus rate of flow characteristic, and b. venting means for said fluid passages comprising an opening in each passage downstream from said location relative to said source adapted for connection to a fluid reservoir of lower pressure then said source and obstructor means for varying the degree of venting of said fluid passages through said openings, said openings of said fluid passages being side ports in a vent cylinder and said obstructor means comprising a spool disposed in the vent cylinder having land means for variably covering said ports in accordance with the axial position of the spool, said output of the transmitter being provided by said fluid passages, said axial movement of the responder means piston being in response to pressure difference in said fluid passages, and feedback means actuated by said responder means for variably venting the output of said transmitter to negate pressure change created by change of setting of the transmitter.
Claim 3
Dependent Claim
34 words
Fluidic repeater according to claim 1 wherein said feedback means comprises variable cross section surface passages on said piston cooperating with cylinder openings communicating with passage means adapted for connection to a fluidic reservoir.
Claim 4
Dependent Claim
13 words
Fluidic repeater according to claim 2 wherein said surface passages are sloping grooves.
Claim 5
Dependent Claim
14 words
Fluidic repeater according to claim 3 wherein said grooves are of V-shaped cross section.
Claim 6
Dependent Claim
15 words
Fluidic repeater according to claim 2 wherein said surface passage means includes spiral helical grooves.
Claim 7
Dependent Claim
18 words
Fluidic repeater according to claim 2 wherein said surface passage means includes conical annular grooves around said piston.
Claim 8
Dependent Claim
37 words
Fluidic repeater according to claim 2 wherein said surface passage means includes annular grooves around the piston near the ends thereof communicating with the ends of the piston through radial and axial flow passages in the piston.
Claim 9
Dependent Claim
23 words
Fluidic repeater according to claim 7 wherein said surface passage means further includes sloping grooves in the piston communicating with said annular grooves.
Claim 10
Dependent Claim
103 words
Fluidic repeater according to claim 1 including a second piston and cylinder means responsive to fluid pressure change therein to cause relative movement of the piston and cylinder portions thereof, movement of the piston of the first said piston and cylinder means of the responder controlling fluid supply to said second piston and cylinder means to effect fluid pressure change therein, and second feedback means actuated by said relative movement of the piston and cylinder means of said second piston and cylinder means to variably vent said output of the transmitter to negate pressure change created by change of setting of the transmitter.
Claim 11
Dependent Claim
45 words
Fluidic repeater according to claim 1 in which the feedback means is correlated with the venting means to produce axial motion of the piston means of the responder means proportional to the displacement of the obstructor means relative to said openings in said fluid passages.
Claim 12
Dependent Claim
320 words
Fluidic repeater comprising transmitter means adapted for connection to a source of pressure fluid and having an output adapted to deliver pressure fluid at variable pressure according to the setting of the transmitter, responder means comprising a piston and cylinder connected to the output of the transmitter for relative axial movement of the piston and cylinder in response to variation in the pressure of the transmitter output, said transmitter comprising: a. a pair of fluid passages each adapted at a certain location for connection to source of pressure fluid having a drooping pressure versus rate of flow characteristic, and b. venting means for said fluid passages comprising an opening in each passage downstream from said location relative to said source adapted for connection to a fluid reservoir of lower pressure then said source and obstructor means for varying the degree of venting of said fluid passages through said openings, said openings of said fluid passages being side ports in a vent cylinder and said obstructor means comprising a spool disposed in the vent cylinder having land means for variably covering said ports in accordance with the axial position of the spool, said output of the transmitter being provided by said fluid passages, said axial movement of the responder means piston being in response to pressure difference in said fluid passages, and feedback means actuated by said responder means for variably venting the output of said transmitter to negate pressure change created by change of setting of the transmitter, said feedback means comprising openings to said passages downstream from said location and obstructor means for varying the degree of venting through the last said openings, fluid flow through the said vent openings of the feedback means being in parallel with fluid flow through the said openings of the said venting means of the transmitter, said feedback means being responsive to the displacement of the responder means independent of the velocity thereof.
Claim 13
Dependent Claim
320 words
Fluidic repeater comprising transmitter means adapted for connection to a source of pressure fluid and having an output adapted to deliver pressure fluid at variable pressure according to the setting of the transmitter, responder means comprising a piston and cylinder connected to the output of the transmitter for relative axial movement of the piston and cylinder in response to variation in the pressure of the transmitter output, said transmitter comprising: a. a pair of fluid passages each adapted at a certain location for connection to source of pressure fluid having a drooping pressure versus rate of flow characteristic, and b. venting means for said fluid passages comprising an opening in each passage downstream from said location relative to said source adapted for connection to a fluid reservoir of lower pressure then said source and obstructor means for varying the degree of venting of said fluid passages through said openings, said openings of said fluid passages being side ports in a vent cylinder and said obstructor means comprising a spool disposed in the vent cylinder having land means for variably covering said ports in accordance with the axial position of the spool, said output of the transmitter being provided by said fluid passages, said axial movement of the responder means piston being in response to pressure difference in said fluid passages, and feedback means actuated by said responder means for variably venting the output of said transmitter to negate pressure change created by change of setting of the transmitter, said feedback means comprising openings to said passages downstream from said location and obstructor means for varying the degree of venting through the last said openings, fluid flow through the said vent openings of the feedback means being in parallel with fluid flow through the said openings of the said venting means of the transmitter, said feedback means being responsive to the displacement of the responder means independent of the velocity thereof.