Snap action switch blades
AssigneeRanco Incorporated
InventorsRobert F. Purssell, Avtar S. Bhabra, Guglielmo Rossi
Life of this patent
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Abstract
A snap action switch blade has a basic `Q` shape with two arms interconnected and drawn together by a bridge portion, which may be integral with the arms, to form a deformed loop capable of snap movement between two configurations, with respective tongues projecting into and out of the loop to afford anchoring and/or actuating points for the blade.
Claims11
A snap action switch element comprising a dished blade of resilient sheet material having a base portion, two arms projecting from said base portion, a resiliently flexible internal tongue integral with the base portion and disposed between the arms, a resiliently flexible external tongue integral with the base portion and extending from the latter in the opposite directon to the internal tongue, and a bridge portion drawing together the ends of the two arms remote from the base portion of the blade, the bridge portion prestressing the blade and predisposing it for snap movement between two different configurations upon displacement relative to the arms of the end of one of said tongues, the other of said tongues having an end section constructed for anchoring to a support, at least one of said internal and external tongues resiliently deflecting upon displacement of said end of said one tongue and predetermining the force to be applied to said one tongue to effect said snap movement.
Dependencies are inferred from the claim text.