Gear motor start up control

Details Gear motor start up control Gear motor start up control

2005-06-07

2005-06-07

Denion, Thomas (Department: 3748)

Rotary expansible chamber devices

Interengaging rotating members

Like rotary members

C418S206600, C418S206700, C418S149000, C418S132000

Reexamination Certificate

active

06902382

ABSTRACT:
A hydraulic motor comprising a housing having a fluid inlet. A fluid outlet and a cavity there between, a pair of intermeshing gear elements rotatable in the housing about mutually parallel axes. Each of the gear elements having a set of gear teeth disposed about the periphery of the element and a support shaft extending from oppositely directed end faces of the set of gear teeth. A bearing assembly located on opposite sides of the cavity in said housing to support the shafts for rotation about respective ones of the axes. Each of the bearing assemblies having a sealing face overlying the end faces and biased into engage with the end faced by a pressure compensating seal located between the bearing and the housing. The sealing face having a channel extending partially about the spindle and in fluid communication with the inlet to introduce fluid under pressure between the faces.

REFERENCES:
patent: 3830602 (1974-08-01), Boop et al.
patent: 3961872 (1976-06-01), Muller et al.
patent: 4038000 (1977-07-01), Dworak
patent: 4124335 (1978-11-01), Jons et al.
patent: 4527966 (1985-07-01), Laumont

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