Rotary expansible chamber devices – With wear surface treatment or integrally plated wear layer
Patent
1976-10-12
1978-02-07
Freeh, William L.
Rotary expansible chamber devices
With wear surface treatment or integrally plated wear layer
418133, F04C 2900
Patent
active
040724514
ABSTRACT:
In a rotary sliding vane pump having a non-circular cam ring which expands and contracts radially, a cheek plate is clamped against the end face of the cam ring and lies in rubbing contact with the rotor and vanes. The cheek plate has a wearing face of low friction material such as bronze. Unwanted wear between the cheek plate and the cam ring due to its expansion/contraction movements is reduced by the provision of one or more areas of hard metal adjacent the cam ring.
REFERENCES:
patent: 3528757 (1970-09-01), Ware
patent: 3545901 (1970-12-01), Belzner
patent: 3752609 (1973-08-01), Niemiec et al.
patent: 3791781 (1974-02-01), Fujiyama et al.
patent: 3892028 (1975-01-01), Dobler
Freeh William L.
Smith Leonard
Sperry Rand Corporation
Van Meter Theodore
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