Trigger operated tool handle switch

Details Trigger operated tool handle switch Trigger operated tool handle switch

1978-11-27

1981-03-17

Marcus, Stephen

Electricity: circuit makers and breakers

Liquid contact

Time delay

200164R, 200260, H01H 144, H01H 1352

Patent

active

042569427

ABSTRACT:
An electrical switch having spaced stationary contacts and a contact carrier carrying a bridging contact in linear reciprocation relative to the stationary contacts, with the bridging contact biased toward the stationary contacts. The bridging contact has spaced opposite contacting ends forming a leading contact end and a trailing contact end for sliding movement between a bridging position where the contacting ends contact their respective stationary contacts, and a non-bridging position where the leading contact end is out of engagement with its stationary contact. The bridging contact is rotatably hinged to the contact carrier and a projection is disposed between the stationary contacts for engagement with the leading contact end for pivoting and lifting the leading contact end from its stationary contact in coaction with the hinged connection with a quick break action during movement of the contact carrier to the non-bridging position.
Each conductor wire connected to the switch is releasably secured therein by a spring-like retainer blade biased diagonally against the wire. Each retainer blade has a release arm for deactivating the retainer blade thus permitting easy withdrawal of the conductor wire. The release arm has a laterally extending handle lug on its exteriorly exposed free end to provide a handle and also to provide for engagement with the switch housing to limit inward movement of the release arm. The inner end of the release arm is beveled to provide a plane-to-plane contact with the retainer blade for a positive contact therewith.

REFERENCES:
patent: 2521468 (1950-09-01), Lodge
patent: 2966560 (1960-12-01), Gluck
patent: 3222488 (1965-12-01), Matthews
patent: 3594523 (1971-07-01), Frenzel
patent: 3629534 (1971-12-01), Reviel
patent: 3739126 (1973-06-01), Sahrbacker et al.
patent: 3971906 (1976-07-01), Sahrbacker

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