Tip seal back-up member for use in fluid apparatus of the scroll

Details Tip seal back-up member for use in fluid apparatus of the scroll Tip seal back-up member for use in fluid apparatus of the scroll

1983-03-24

1983-11-22

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418142, 277204, 267161, F01C 102, F01C 1908, F16J 1516, F16F 108

Patent

active

044165978

ABSTRACT:
A tip seal back-up member is disclosed for use in fluid apparatus of the scroll type, which member comprises a strip of material extending longitudinally in generally spiroidal configuration about a reference axis and having a preformed configuration such that its radially inner and outer edge portions are disposed axially with respect to each other. The strip of material comprises an elastic material such that as one of the edge portions is displaced axially toward the other, an opposing spring force is developed. In operation, the back-up member is disposed within a groove located in a tip surface of a wrap element in fluid apparatus of the scroll type, between a bottom wall of the groove and a tip seal. Preferably, the strip of material is generally flat between its radially inner and outer edge portions and is constructed from steel.

REFERENCES:
patent: 3400939 (1968-09-01), Jones
patent: 3994636 (1976-11-01), McCullough et al.
patent: 4080120 (1978-03-01), Eiermann
patent: 4199308 (1980-04-01), McCullough

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