Reversing pump eccentric member

Details Reversing pump eccentric member Reversing pump eccentric member

1978-03-16

1980-03-18

Vrablik, John J.

Rotary expansible chamber devices

Self-acting unidirectional flow with reverse rotation or...

418171, 308172, F04C 106, F04C 1502, F16C 3306

Patent

active

041937473

ABSTRACT:
A reversing eccentric member for a gerotor pump is shown. The eccentric member comprises a ring having opposed generally planar surfaces. One surface defines an arcuate notch for limiting rotation of the member. The opposite surface defines a slightly-raised radially innermost marginal portion which is knurled to minimize the surface area that supports the member in facing engagement with a stationary plate of the pump and also define channels to prevent sticking between lubricated adjacent machined surfaces. This limits the frictional engagement between the stationary plate and the eccentric member and the adhesive tendency of the film of lubricant therebetween so the member is generally freely and easily rotated on the plate in response to a change in the direction of rotation of the pump rotor.

REFERENCES:
patent: 3497273 (1970-02-01), Muijderman et al.

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