Electricity: circuit makers and breakers – Multiple circuit control – Reciprocating contact
Patent
1977-02-28
1978-05-09
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Reciprocating contact
200 5A, 200159R, 200276, 200302, 200314, H01H 1352, H01H 106
Patent
active
040888550
ABSTRACT:
A low-resistance electro-mechanical switch with snap-action tactile feel is disclosed comprising a base carrying one contact, a stepped guide post projecting from the base and carrying an opposing contact, and a conductive ring-like helical spring looped under tension around the guide post and serving as the bridging contactor. Instant complete switching is achieved with a snap action by advancing the spring against and abruptly past the step on the post, switching transients accompanying such snap action being avoided by the redundancy parallel paths that the several spring coils afford while settling in bridging position between the switch contacts.
REFERENCES:
patent: 959435 (1910-05-01), Thomson
patent: 3206561 (1965-09-01), Fordeck
patent: 3626171 (1971-12-01), Abramowitz et al.
patent: 3663780 (1972-05-01), Golbeck
patent: 3697706 (1972-10-01), Huggard
patent: 3732387 (1973-05-01), Berry
patent: 3735058 (1973-05-01), Berry
patent: 3927284 (1975-12-01), Anderson
patent: 4002873 (1977-01-01), Lewandowski
patent: 4017700 (1977-04-01), West
Korry Manufacturing Co.
Scott James R.
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