Seal

Details Seal Seal

1990-04-06

1992-03-03

Look, Edward K.

Power plants

Pressure fluid source and motor

Pulsator

92245, 277206R, B60T 1100

Patent

active

050921258

ABSTRACT:
An annular elastomeric seal, a piston utilizing the seal, and a fluid cylinder assembly utilizing the seal. The seal includes an axially forward portion defining a circumferentially inner and a circumferentially outer deflectable lip seal and an axially rearward portion defining a circumferentially inner and a circumferentially outer arcuate heel seal. When positioned in an annular groove in a piston and with the piston slidably received in the bore of a cylinder, the annular seal provides fluid pressure sealing at the deflectable lip seals, provides secondary fluid pressure sealing at the arcuate heel seals, provides air sealing at the arcuate heel seals, and functions at the arcuate heel seals to preclude the entry of contaminants into the sealing interfaces. The seal is especially effective when employed in a hydraulic pressure cylinder of the center feed type since it allows the usage of a single annular seal positioned in a singular annular groove in the piston.

REFERENCES:
patent: 2081040 (1937-05-01), King
patent: 2700561 (1955-01-01), Svenson
patent: 2884291 (1959-04-01), Whitten
patent: 2895773 (1959-07-01), McConnaughey
patent: 3288475 (1966-11-01), Benoit
patent: 3550990 (1970-12-01), Rentschler
patent: 3563442 (1971-02-01), Kretchman
patent: 3921991 (1975-11-01), Beck
patent: 4195849 (1980-04-01), Taft
patent: 4371177 (1983-02-01), Bahr et al.
patent: 4407125 (1983-10-01), Parsons
patent: 4417503 (1983-11-01), Izumi
patent: 4476772 (1984-10-01), Gorman et al.
patent: 4477091 (1984-10-01), Adamek
patent: 4534172 (1985-08-01), Price et al.
patent: 4671065 (1987-06-01), Ishiwata
patent: 4750847 (1988-06-01), Boyd
3 pages of catalog of Minnesota Rubber Company entitled "Fact Book and Design Guide".

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