Dial operated pressure regulator
AssigneePower Automotive Equipment Pty. Ltd.
InventorRobert J. Baillie
Life of this patent
Estimating the term…
Abstract
A dial operated air pressure regulator produces forward, hold and reverse signals in an air operated control circuit which creates corresponding conditions in a hydraulic circuit. The regulator has a pair of spring loaded valves which slide axially in a pair of valve cylinders which in turn control the air flow in the circuit. The valves are depressed by face cams moulded into the dial; rotation of the dial in one direction causes one cam to operate one valve and produces a forward signal; rotation in the opposite direction causes the other cam to operate the associated valve to create the reverse signal; when neither valve operates, the hold signal results.
Claims4
A dial operated fluid pressure regulator for producing forward, hold and reverse signals in a fluid control circuit which in turn creates (a) forward, hold, and reverse conditions in a hydraulic circuit, said regulator comprising:
- a body,
- a pair of mutually adjacent parallel valve cylinders in the body,
- a fluid inlet and fluid outlet for each valve cylinder connectable to said fluid control circuit,
- a valve slidably located in each cylinder to influence the passage of fluid in the control circuit, the axial movement of one valve causing the forward signal in the circuit, the axial movement of the other valve causing the reverse signal in the circuit, and the movement of neither valve causing the hold signal in the circuit, wherein said one valve is an on/off valve and said other valve is a fluid pressure regulating valve, and
- a dial mounted on the body, provided with a first face cam which causes axial movement of said one valve when the dial is rotated through a first sector and a second face cam which causes axial movement of the other valve when the dial is rotated through a second sector, said cams being arranged to provide a null position reached by rotation of the dial between the two face cams.
Dependencies are inferred from the claim text.