Trochoid oil pump

Details Trochoid oil pump Trochoid oil pump

2005-12-21

2009-02-10

Denion, Thomas E (Department: 3748)

Rotary expansible chamber devices

Trapped fluid relief

With tooth modification

C418S061300, C418S166000, C418S171000, C418S189000

Reexamination Certificate

active

07488163

ABSTRACT:
A trochoid oil pump, which enables the endurance to be increased and the reduction of discharge pulsations and noise to be achieved, and in which those results can be realized with a very simple structure.An interdental space constituted by an inner rotor and an outer rotor having trochoid tooth profile or substantially trochoid tooth profile starts a compression stroke in the location of a partition section between an intake port and a discharge portion, and a linking gap L is composed by the interdental space and a preceding adjacent interdental space realized in a discharge stroke. The linking gap expands gradually from the start of compression stroke to the discharge stroke.

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patent: 2004/0191101 (2004-09-01), Ogata et al.
patent: 5-215079 (1993-08-01), None

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