Proportioned piston ring seals

Details Proportioned piston ring seals Proportioned piston ring seals

1991-04-17

1992-04-21

Hannon, Thomas R.

Bearings

Rotary bearing

Hydraulic or pneumatic bearing support

298981, 384581, F16C 2700, F16C 3904, B21D 5310

Patent

active

051062089

ABSTRACT:
A squeeze film damper assembly includes a piston ring and groove seal combination. The piston ring is proportioned with respect to its groove to generate a pressure wave in an annular ring space which closely approximates the pressure generate in the annular squeeze film space, thereby improving piston ring sealing. The radial dimension of the ring space is matched to the radial dimension of the squeeze film space. The assembly can include channels interconnecting the squeeze film space and ring space at corresponding angular positions in the annular spaces, with stand-offs for restricting circumferential flow between the angular positions.

REFERENCES:
patent: 4046430 (1977-09-01), Buono et al.
patent: 4114959 (1978-09-01), Christ
patent: 4213661 (1980-07-01), Marmol
patent: 4337983 (1982-07-01), Hibner
patent: 4392751 (1983-07-01), Ida et al.
patent: 4404724 (1983-09-01), Christ et al.
patent: 4527912 (1985-07-01), Klusman
patent: 4634297 (1987-01-01), Schriwer
patent: 4669893 (1987-06-01), Chalaire et al.
patent: 4783179 (1988-11-01), Katayama et al.
Experimental Measurement of the Dynamic Force Response of a Squeeze-Film Bearing Damper, by John M. Vance-Transactions of the ASME, Nov. 1975, pp. 1282-1290.

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