Cylinder for a vane motor

Details Cylinder for a vane motor Cylinder for a vane motor

2007-08-28

2007-08-28

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

C418S082000, C418S180000, C418S259000

Reexamination Certificate

active

11099897

ABSTRACT:
A cylinder to a vane motor is designed to include cylindrically shaped inlet and outlet holes, an axial passage that includes a blocked upstream portion that bypasses the upstream inlet holes, spaced circumferentially slots for leading a portion of the pressurized air into the inlet holes, discharging the portion of pressurized air from the axial passage into an annular cavity to bathe the bearing in the cooler pressurized air, and recirculating the portion of pressurized air through another axial passageway to flow into all of the inlet holes. The discharge holes are judiciously oriented in a particular pattern to assure that the edge of the vanes wear uniformly. The inlet holes are spaced from the pinch point of the spindle to cylinder to permit an increased volume of pressurized air to enter the vane motor and the outlet holes are spaced to maximize the power stroke of the vane motor. The pressurized air is introduced centrally in the motor housing and diverted to flow to the outer periphery of the cylinder.

REFERENCES:
patent: 3453936 (1969-07-01), Biek et al.
patent: 3734652 (1973-05-01), Barnett
patent: 3827834 (1974-08-01), Kakimoto
patent: 6241500 (2001-06-01), Ellis
patent: 56056979 (1981-05-01), None
patent: 06066101 (1994-03-01), None

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