US Patent: 1,988,213
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| Multiple Rotary Pump
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Patentee:
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| Percy Oliver Ott (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: |
Feb. 12, 1931 |
| Granted: |
Jan. 15, 1935 |
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Patent Pictures:
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Joel Havens
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Description: |
| Abstract:
The invention has for its object, to provide certain new and useful improvements in vane-type rotary hydraulic pumps whereby two or more 6 pump units may be arranged on a common rotor shaft provided with an inlet for the units and whereby the discharge for these units may be through a common outlet where the units work at the same pressure or may be through separate outlets where it is desired to furnish pressure fluid at different pressures. A further object of the invention is to Provide a multiple pumping unit of ;the rotary vane-type wherein the discharge passages from the pump units are concentrically arranged in the rotor shaft and include one or more removable tubes so that the units may discharge into the same or different work circuits.
Claim:
In an hydraulic pump structure, the combination of a plurality of vane-type, rotary pumping units, shaft members for supporting said units, one of said shaft members having an inlet connecting with said units for supplying the working fluid thereto, the other of said shaft members have a discharge passage provided with means for b connecting with said units for receiving the discharge therefrom collectively or separately. |
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