US Patent: 2,296,647
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| Hydraulic Pressure Booster
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Patentee:
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| John H. McCormick (exact or similar names) - Racine, Racine County, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 21, 1934 |
| Granted: |
Dec. 15, 1936 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Racine Tool & Machine Co.
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Description: |
| Abstract:
The invention relates to pump governors and more particularly to a governor for controlling the output of a rotary vane type hydraulic pump. The object of the invention is to provide a simple mechanist for automatically governing the eccentricity of the outer barrel of a vane type rotary hydraulic pump, so that the pressure of the fluid furnished by the pump will be substantially constant.
Claim:
In a hydraulic booster having a cylinder, a motor piston operating in said cylinder and a reversing valve for alternately respectively connecting opposite ends of said cylinder with a source of hydraulic pressure fluid and exhaust, the combination with said piston and said valve of a pair of control Valves for said reversing valve, means for operating said control valves alternately by the piston as it reaches the end of its stroke, hydraulically operated means for returning said control valves, and means for hydraulically interlocking said control valves to prevent their movement except at the end stroke positions of the movement of the piston, said valves in turn preventing movement of the reversing valve until one of said valves has been operated and the other has been moved to a position for actuation by the piston on its return stroke. |
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