Seals with particle exclusion means

Details Seals with particle exclusion means Seals with particle exclusion means

1994-10-21

1996-07-09

Cummings, Scott W.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 55, 277 56, F16J 15453

Patent

active

055337376

ABSTRACT:
A particle exclusion assembly designed to operate in an inclined position and to protect an associated sealing assembly. The assembly includes radially inner and outer relatively rotatable walls and axially inner and outer baffles and a rotary, controlled porosity, open-celled element which substantially fills the cavity between the two walls and the two baffles. The open-celled element controls the rate of movement of particulate material and restricted annular opening is provided to control ingress and egress of particulate material from the open-celled element.

REFERENCES:
patent: 4277072 (1981-07-01), Forch
patent: 4383720 (1983-05-01), Ernst
patent: 4426088 (1984-01-01), Ernst
patent: 4428587 (1984-01-01), Forch
patent: 4436317 (1984-03-01), Schmitt
patent: 5105636 (1992-04-01), Anastase et al.
patent: 5110143 (1992-05-01), Hibbetts
patent: 5129744 (1992-07-01), Otto et al.
patent: 5480161 (1996-01-01), Borowski

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