Timing device for pneumatic control systems
OwnerKarl Hodler, Erich Walterinventors
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Abstract
This invention relates to pneumatic control systems, particularly to a timing device for the same, wherein a control device is maintained at a constant speed by means of a balance wheel or flywheel, whose kinetic energy furnishes a pneumatic signal and which mechanically shifts a valve to pass on the pneumatic signal. The shifting of the valve is adjustable.
Claims6
A timing device for a pneumatic control system of the type comprising a conduit (9) for the passage of successive pneumatic signals said signals being constituted by changes in pneumatic pressure in said conduit, and a valve (10) controlling the passage of said signals through said conduit, said timing device comprising,
- a control element (15) movable over a predetermined path,
- a control spring (26) coupled to said control element for moving said control element over said path from a first position to a second position,
- a housing (6) connected to said conduit, said housing containing pressure-responsive means (7) movable in response to pneumatic pressure,
- coupling means (1, 3) coupling said pressure-responsive means to said control element so that when said pressure-responsive means is supplied with energy by a signal received through said conduit, energy is stored in said control spring,
- a return spring (5) against which said pressure-responsive means operates,
- a balance wheel (25) coupled to said control element to maintain the movement of said control element at a constant speed,
- means (12) connected between said valve and control element and through which said valve is actuated by said control element to permit passage of the signal, when said control element is moved from the first position to the second position, said coupling means comprising a locking member (3) for releasing or locking said control element in response to the pneumatic signal received through said conduit.
A timing device for a pneumatic control system of the type comprising a conduit (9) for the passage of successive pneumatic signals said signals being constituted by changes in pneumatic pressure in said conduit, and a valve (10) controlling the passage of said signals through said conduit, said timing device comprising,
- a control element (15) movable over a predetermined path,
- a control spring (26) coupled to said control element for moving said control element over said path from a first position to a second position,
- a housing (6) connected to said conduit, said housing containing pressure-responsive means (7) movable in response to pneumatic pressure,
- coupling means (1,3) coupling said pressure-responsive means to said control element,
- a return spring (5) against which said pressure-responsive means operates,
- a balance wheel (25) coupled to said control element to maintain the movement of said control element at a constant speed,
- means (12) connected between said valve and control element and through which said valve is actuated by said control element to permit passage of the signal, when said control element is moved from the first position to the second position, said coupling means comprising a locking member (3) moved by said pressure-responsive means (7) for releasing or locking said control element in response to the pneumatic signal received through said conduit, said locking member coupling the pressure-responsive means (7) to said control element for moving said control element (15) and said control spring (26) coupled to the control element back from the second position to the first position when said pressure-responsive means is moved by its return spring (5).
Dependencies are inferred from the claim text.