The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 1979
Filed:
Apr. 19, 1978
William N Smith, Knoxville, TN (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
An electrical switch construction having a fixed contact and a movable switch blade carrying a contact for cooperating with the fixed contact under the control of an actuator spring that sustains a contact force on the closed contacts until the actuator spring is snapped overcenter by a movable actuator member operatively associated with the actuator spring, the construction having a stop normally spaced from the actuator spring and adapted for only being engaged by the actuator spring and thereby limiting movement of the actuator spring caused by normal actuation movement of the actuator member when the actuator spring is snapped in one direction by the actuator member to close the contacts. The stop comprises a biasing means. A fixed non-current carrying stop is also provided to be engaged by the blade when the blade is moved by the actuator spring in the contact closing direction and another biasing means carries the fixed contact for being biased in the contact closing direction under the force of the actuator spring placing the blade against the stop and the contact thereof into contact with the fixed contact.