| http://www.w3.org/ns/prov#value | - It will be appreciated that apparatus 100 may be operated as a fluid motor or as a fluid pump, with equal facility, and can also be operated as a combination motor-pump or metering device. when operated as a motor, fluid, such as air under pressure, can be introduced to the interior of casing 60 through conduit 94 to cavity 90 from whence it flows through passageways 26 and registering ones of pas
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