Fluid driven motors

Details Fluid driven motors Fluid driven motors

1996-10-04

1998-11-10

Graysay, Tamara L.

Rotary expansible chamber devices

With mechanical sealing

Seal on working member periphery separates inlet and outlet...

418188, 418249, F01C 1902

Patent

active

058334440

ABSTRACT:
There is disclosed a fluid driven motor of particular use, for example, in drilling apparatus or in powering underwater excavation apparatus. Known motors suffer from a number of problems, e.g. lack of sufficient hydraulic efficiency. According to one aspect of the present invention there is provided a motor comprising a stator and a rotor rotatably mounted in the stator, wherein the stator is provided with at least one rod recess formed in an inner surface thereof, the stator providing at least one inlet/exhaust port communicating between a surface of the rod recess and an outer surface of the stator, the rotor is provided with a rotor channel and at least one channel for conducting motive fluid from the rotor channel to a chamber between the rotor and the stator, and the at least one rod recess is provided with a rod which, in use, may form a seal between the stator and the rotor.

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PCT Search Report, PCT App. No. PCT/GB95/00069 Corresponding to the parent US case of this application (No Date).
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