Tangential expander for oil control piston rings

Details Tangential expander for oil control piston rings Tangential expander for oil control piston rings

1978-02-27

1979-11-27

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

267 15, F16F 134, F16F 936

Patent

active

041757580

ABSTRACT:
The joint of the expander is formed by tooth-like portions of the side flanges of a U-shaped spring, bent inward and coiled into a ring.
The device comprises a measuring gear which reels off the sinuous profiled spring from a spiral.
The gear has a radial slot receiving the reciprocating cutters acting in conjunction with bending punches which bend the cut-off tooth-like ends of the spring, locked into a joint.

REFERENCES:
patent: 3338582 (1967-08-01), DeBruin
patent: 3381971 (1968-05-01), Mayhew
patent: 3929342 (1975-12-01), Morsbach et al.
patent: 4053165 (1977-10-01), Hartley
patent: 4130288 (1978-12-01), Nisper

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