Shaft seal and means to effect radial movement of sealing lip

Details Shaft seal and means to effect radial movement of sealing lip Shaft seal and means to effect radial movement of sealing lip

1983-11-07

1985-01-01

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277166, 277188A, F16J 1532

Patent

active

044913320

ABSTRACT:
A shaft seal assembly (55) for use in a rotary fluid pressure device. The device includes a housing (51) and a rotary shaft (31). The shaft seal assembly (55) includes an elastomeric sealing element (65), an inner support member (67) and an outer support member (69). The sealing element (65) includes a cushion portion (81) disposed radially between the inner and outer support members to cushion radial movement of the inner support member when the shaft moves radially. The sealing element (65) includes a sealing lip (71) defining a pivot point (83) and the inner support member extends rearwardly of the pivot point (83), whereby radial movement of the inner support member results in corresponding radial movement of the sealing lip (71), reducing the loading on the lip.

REFERENCES:
patent: 2483988 (1949-10-01), Victor
patent: 2485011 (1949-10-01), Niessen et al.
patent: 3489420 (1970-01-01), Woodling
patent: 3495843 (1970-02-01), Andersen et al.
patent: 3601419 (1971-08-01), Fern
patent: 4325591 (1982-04-01), Otto

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