Air pump pivot pin restraint

Details Air pump pivot pin restraint Air pump pivot pin restraint

1974-05-24

1976-05-04

Husar, C. J.

Rotary expansible chamber devices

With mechanical sealing

Seal element between working member and vane

418241, F01C 1900

Patent

active

039543579

ABSTRACT:
A rotary pump includes a plurality of rotor driven radial vanes pivotally supported on a cantilevered pivot pin located centrally of a cylindrical pump housing by a first end fixed to a closure plate of the pump and a free end spaced with respect to the end plate of a cylindrical rotor. A pilot sleeve is press fit within a vane hub and the sleeve includes a bearing surface for rotatably supporting the pilot sleeve on the free end of the pivot pin and the sleeve further includes means for guiding the pilot sleeve within a grooved track in the end plate of the rotor so as to prevent deflection of the pivot pin and resultant wear of pump vane tips on the inner surface of a pump chamber.

REFERENCES:
patent: 846844 (1907-03-01), Green
patent: 993053 (1911-05-01), Goehst et al.
patent: 3373929 (1968-03-01), Partain
patent: 3419208 (1968-12-01), Brewer et al.
patent: 3437265 (1969-04-01), Rohde

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