Switch construction
Patent 4533803 Issued on August 6, 1985. Estimated Expiration Date: 
October 17, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 17, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2215319 2900460 3178522 3299241 3471663 3519775 3548137 3860776 Electric switch Switch unit Patent #: 4336429 InventorsApplicationNo. 06/542865 filed on 10/17/1983US Classes:200/559, Leaf spring contact200/276, Coil spring contact200/290, Spring biasing means200/339RockerExaminersPrimary: Marcus, StephenAssistant: Kidorf, Renee S. Attorney, Agent or FirmInternational ClassesH01H 23/28 (20060101)H01H 23/12 (20060101) H01H 23/00 (20060101) H01H 1/12 (20060101) H01H 1/24 (20060101) AbstractA momentary contact rocker switch utilizes a pair of torsion springs as movable switch contacts, with fixed terminal posts being used as fixed contacts. The terminal posts are grooved in the region of contact with the torsion spring to provide a wiping action. This wiping action, along with the high electrical contact forces provided by the torsion spring, eliminates the need for silver contacts.Other References
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