Molded plastic air cylinder

Details Molded plastic air cylinder Molded plastic air cylinder

1988-09-12

1990-02-06

Garrett, Robert E.

Expansible chamber devices

With separate biasing means for working member

Tension spring

92 85A, 92130R, 921691, 921701, 92248, 92249, 277152, 277153, 277205, F01B 3100

Patent

active

048980820

ABSTRACT:
A plastic pneumatic cylinder has a cylinder housing, a piston within the housing, and a rod on which the piston is mounted. The cylinder is molded of a plastic synthetic resin and has a cylindrical bore of a predetermined diameter. The piston is molded in one piece from plastic synthetic resin, such as Delrin, in the form of a generally cylindrical body and a generally cylindrical sealing lip surronding and spaced radially from the body to seal slidably against the bore. The lip is flared out somewhat to have an edge that is of a greater diameter than the bore. The piston can be formed in single-acting or double-acting configurations. A conical return spring can be employed.

REFERENCES:
patent: 3040712 (1962-06-01), Harrah
patent: 3176595 (1965-04-01), Schwartz
patent: 3913460 (1975-10-01), Wright
patent: 4009645 (1977-03-01), Freimuth
patent: 4195849 (1980-04-01), Taft
patent: 4207807 (1980-06-01), Takata et al.
patent: 4651623 (1987-03-01), Rogers
patent: 4667780 (1987-05-01), Pauliukonis

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