Vane pump and fuel vapor leakage check module having the same

Details Vane pump and fuel vapor leakage check module having the same Vane pump and fuel vapor leakage check module having the same

2007-06-26

2007-06-26

Williams, Hezron (Department: 2856)

Measuring and testing

Simulating operating condition

Marine

C418S131000, C418S134000, C418S259000

Reexamination Certificate

active

10923793

ABSTRACT:
A vane pump includes a motor arrangement, a rotor, a casing and bolts. The motor arrangement includes a mount. The rotor includes vanes and is rotated by the motor arrangement. The casing has opposed first and second end surfaces and makes flat surface contact with the mount at the second end surface thereof. The casing includes a pump chamber, receiving through holes and second end side recesses. The pump chamber receives the rotor. The receiving through holes penetrate through the casing. The second end side recesses are recessed in the second end surface of the casing. The second end side recesses are spaced away from the receiving through holes. Each bolt is received through a corresponding one of the receiving through holes of the casing, and each bolt is threadably engaged with the mount to connect the casing to the mount.

REFERENCES:
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patent: 7114931 (2006-10-01), Wilk et al.
patent: 2005/0022588 (2005-02-01), Hayakawa et al.
patent: 2006/0191330 (2006-08-01), Hayakawa et al.
patent: 03199686 (1991-08-01), None

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