Control system having vibration-responsive means and a vibration-responsive unit for such system or the like

Claim 2

In a control system having a device normally disposed in one operative condition thereof and a vibration responsive means operatively interconnected to said device to be unset and thereby cause said device to be in another operative condition thereof when said vibration responsive means senses a vibration in excess of a certain value, the improvement comprising a unit operatively inter-connected to said vibration responsive means to automatically reset the same after the vibration responsive means has sensed one shock in excess of said certain value to prevent that one shock from effectively causing said device to be in said other condition thereof while being ineffective thereafter to reset said vibration responsive means if another excessive shock is sensed by said vibration responsive means within a certain time period after the occurrence of said one excessive shock, said device being pneumatically operated and said vibration responsive means comprising a valve means that effectively vents said device to cause the same to change from said one operative condition thereof to said other operative condition thereof when said vibration responsive means has been reset by said unit and thereafter senses another excessive shock within said certain time period to be unset thereby.

Claim 3

In said control system as set forth in claim 1, the further improvement wherein aid unit comprises a pneumatically operated unit for resetting said vibration responsive means after the same has sensed one excessive shock so as to be in an unset condition thereof.

Claim 4

In a control system as set forth in claim 2, the further improvement wherein said pneumatically operated unit comprises a ''''NOT'''' logic unit.

Claim 5

In a control system as set forth in claim 3, the further improvement wherein said ''''NOT'''' logic unit receives an input when said device is in said one operative condition thereof, the output of said ''''NOT'''' logic unit being utilized for resetting said vibration responsive means.

Claim 6

In a pneumatic control system having a pneumatic source, a pneumatically operated device, passage means interconnecting said source to said device to actuate said device, and a vibration responsive valve means interconnected to said passage means to be unset and thereby vent the same to the atmosphere through the valve thereof to prevent further activation passage means to be unset and thereby vent the same to the atmosphere of said device by said source when said vibration responsive valve means senses a vibration in excess of a certain value, the improvement comprising a pneumatically operated unit operatively interconnected to said vibration responsive valve means to automatically reset the same and thereby terminate said vent through said valve thereof after the vibration responsive valve means has sensed one shock in excess of said certain value to prevent that one shock from effectively deactivating said device while being ineffective thereafter to reset said vibration responsive valve means if another excessive shock is sensed by said vibration responsive valve means within a certain time period after the occurrence of said one excessive shock.

Claim 7

In a pneumatic control system having a pneumatic source, a pneumatically operated device, passage means interconnecting said source to said device to actuate said device, and a vibration responsive valve means interconnected to said passage means to be unset and thereby vent the same to the atmosphere through the valve thereof to prevent further activation passage means to be unset and thereby vent the same to the atmosphere of said device by said source when said vibration responsive valve means senses a vibration in excess of a certain value, the improvement comprising a pneumatically operated unit operatively interconnected to said vibration responsive valve means to automatically reset the same and thereby terminate said vent through said valve thereof after the vibration responsive valve means has sensed one shock in excess of said certain value to prevent that one shock from effectively deactivating said device while being ineffective thereafter to reset said vibration responsive valve means if another excessive shock is sensed by said vibration responsive valve means within a certain time period after the occurrence of said one excessive shock.

Claim 8

In a pneumatic control system as set forth in claim 5, the further improvement wherein said pneumatically operated unit has means for directing a pneumatic signal from a signal source to said vibration responsive means to reset the same.

Claim 9

In a pneumatic control system as set forth in claim 6, the further improvement wherein said signal source is adapted to be exhausted if the same resets said vibration responsive valve means and said pneumatically operated unit again attempts to reset the same within said certain time period.

Claim 10

In a pneumatic control system as set forth in claim 7, the further improvement wherein said signal source comprises an accumulator, said passage means interconnecting said source to said accumulator, said passage means having a pair of restrictor means therein in series between said source and said accumulator, said passage means interconnecting said source to said device through said passage means intermediate said pair of restrictor means.

Claim 11

In a pneumatic control system as set forth in claim 8, the further improvement wherein said vibration responsive valve means is adapted to vent said passage means intermediate said pair of restrictor means, said pneumatically operated unit having means for interconnecting said accumulator to said vibration responsive valve means only when said passage means intermediate said restrictor means is vented by said vibration responsive valve means.

Claim 12

A self-contained unit for use in a control system having a device normally disposed in one operative condition thereof, said unit having a vibration responsive means adapted to be operatively interconnected to said device to be unset and thereby cause said device to be in another operative condition thereof when said vibration responsive means senses a vibration in excess of a certain value, said unit having resetting means operatively inter-connected to said vibration responsive means to be adapted to automatically reset the same after the vibration responSive means has sensed one shock in excess of said certain value to prevent that one shock from effectively causing said device to be in said other condition thereof while being ineffective thereof to reset said vibration responsive means if another excessive shock is sensed by said vibration responsive means within a certain time period after the occurrence of said one excessive shock, said device being pneumatically operated and said vibration responsive means comprising a valve means that is adapted to effectively vent said device to cause the same to change from said one operative condition thereof to said other operative condition thereof when said vibration responsive means has been reset by said resetting means and thereafter senses another excessive shock within said certain time period to be unset thereby.

Claim 13

A self-contained unit for use in a control system having a device normally disposed in one operative condition thereof, said unit having a vibration responsive means adapted to be operatively interconnected to said device to be unset and thereby cause said device to be in another operative condition thereof when said vibration responsive means senses a vibration in excess of a certain value, said unit having resetting means operatively inter-connected to said vibration responsive means to be adapted to automatically reset the same after the vibration responSive means has sensed one shock in excess of said certain value to prevent that one shock from effectively causing said device to be in said other condition thereof while being ineffective thereof to reset said vibration responsive means if another excessive shock is sensed by said vibration responsive means within a certain time period after the occurrence of said one excessive shock, said device being pneumatically operated and said vibration responsive means comprising a valve means that is adapted to effectively vent said device to cause the same to change from said one operative condition thereof to said other operative condition thereof when said vibration responsive means has been reset by said resetting means and thereafter senses another excessive shock within said certain time period to be unset thereby.

Claim 14

A self-contained unit as set forth in claim 10 wherein said resetting means comprises a pneumatically operated means for resetting said vibration responsive means after the same has sensed one excessive shock so as to be in an unset condition thereof.

Claim 15

A self-contained unit as set forth in claim 11 wherein said pneumatically operated means comprises a ''''not'''' logic unit.

Claim 16

A self-contained unit as set forth in claim 12 wherein said ''''NOT'''' logic unit is adapted to receive an input when said deivce is in said one operative condition thereof, the output of said ''''NOT'''' logic unit being adapted to be utilized for resetting said vibration responsive means.

Claim 17

A self-contained unit for use in a pneumatic control system having a pneumatic source and passage means for interconnecting said source to a pneumatically operated device to actuate said device, said unit having a vibration responsive valve means adapted to be interconnected to said passage means to be unset and thereby vent said passage means to the atmosphere through the valve thereof to prevent actuation of said device by said source when said vibration responsive valve means senses a vibration in excess of a certain value, said unit having a pneumatically oeprated means operatively interconnected to said vibration vale means to be adapted to automatically reset the same and thereby terminate said vent through said valve thereof after the vibration valve means has sensed one shock in excess of said certain value to prevent that one shock from effectively deactivating said device while being ineffective thereafter to reset said vibration valve means if another excessive shock is sensed by said valve means within a certain time period after the occurrence of said one excessive shock.

Claim 18

A self-contained unit for use in a pneumatic control system having a pneumatic source and passage means for interconnecting said source to a pneumatically operated device to actuate said device, said unit having a vibration responsive valve means adapted to be interconnected to said passage means to be unset and thereby vent said passage means to the atmosphere through the valve thereof to prevent actuation of said device by said source when said vibration responsive valve means senses a vibration in excess of a certain value, said unit having a pneumatically oeprated means operatively interconnected to said vibration vale means to be adapted to automatically reset the same and thereby terminate said vent through said valve thereof after the vibration valve means has sensed one shock in excess of said certain value to prevent that one shock from effectively deactivating said device while being ineffective thereafter to reset said vibration valve means if another excessive shock is sensed by said valve means within a certain time period after the occurrence of said one excessive shock.

Claim 19

A self-contained unit as set forth in claim 14 wherein said pneumatically operated means has means adapted for directing a pneumatic signal from a signal source to said vibration responsive valve means to reset the same.

Claim 20

A self-contained unit as set forth in claim 15 wherein said signal source forms part of said unit and is adapted to be exhausted if the same resets said vibration responsive valve means and said pneumatically operated means again attempts to reset the same within said certain time period.

Claim 21

A self-contained unit as set forth in claim 16 wherein said signal source comprises an accumulator, said unit having passage means for interconnecting said source to said accumulator, said passage means having a restrictor means therein for being disposed between said source and said accumulator.

Claim 22

A self-contained unit as set forth in claim 17 wherein said vibration responsive valve means is adapted to vent said passage means intermediate said source and said restrictor means, said pneumatically operated means having means for interconnecting said accumulator to said vibration responsive valve means only when said passage means intermediate said restrictor means and said source is vented by said vibration responsive valve means.