Apex seal assembly

Details Apex seal assembly Apex seal assembly

1976-08-16

1977-08-16

Croyle, Carlton R.

Rotary expansible chamber devices

With mechanical sealing

Seal on working member periphery separates inlet and outlet...

418122, F04C 2700

Patent

active

040423123

ABSTRACT:
The improved apex seal assembly for a rotary piston of multi-corner profile having a plurality of contiguous peripheral surfaces intersecting at apex portions comprises a seal blade means receivable in a radial slot in each apex portion and an intermediate seal pin means for each apex portion and disposed in and rotatable relative to a bore communicating with the slot. The intermediate seal pin means is so formed as to have a sealing edge portion. A spring is located to exert a force on the intermediate seal pin means offset from its longitudinal axis so as to urge the intermediate seal pin means to rotate in a direction to maintain the sealing edge portion thereof into engagement against the seal blade means regardless of the amount and changes in differential gas pressure across the seal blade means.

REFERENCES:
patent: 3794450 (1974-02-01), Klomp
patent: 3865521 (1975-02-01), Upchurch
patent: 3899272 (1975-08-01), Pratt

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