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US 4,778,961 AGranted
Compact electric safety switch
AssigneeGeneral Electric Company
InventorsAndre J. M'Sadoques, Robert G. Markowski
Life of this patent
Estimating the term…
Abstract
A compact electric safety switch including a rotatably mounted double contact blade assembly. Heavy duty compression springs are positioned under the blade assembly for rapid make and break connection between opposing line and load contact stabs. A pair of contact springs directs the contact blade during transit between the line and load contact stabs and serves to increase the contact pressure between the contact blade and the contact stabs when the contact blade is inserted therein.
Claims13
An electric switch comprising:
- an enclosure;
- a rotatable switch contact blade within said enclosure;
- a line contact stab and a load contact stab arranged at opposing ends of said contact blade providing electric connection between corresponding line and load terminals, biased for rotation by an operating spring;
- a rotor carrying said contact blade and arranged for rotating said contact blade between said line and said load contact stabs;
- and
- a drive assembly on said enclosure interfacing between said rotor and a handle operator, said drive assembly comprising a plurality of arms projecting outwardly from said rotor and terminating in a corresponding plurality of posts;
- said handle operator including a slidably mounted support and an operator post member arranged to contact said posts and rotate said rotor and said contact blade in response to movement of said operator post.
4 more elements
Dependencies are inferred from the claim text.