Patents by Inventor David Allen Swann

David Allen Swann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4104494
    Abstract: The present invention provides an electric switch having a linearly moveable actuator and a switch mechanism including a first electric contact which acts, in use, as a fulcrum, a second electric contact, and a contact bridging member; and constructed and arranged whereby the member is moveable slideably over the fulcrum and in so doing pivots thereabout whereby to bring the leading or trailing end of the member into or out of contact with the second electric contact.The switch can be constructed to be double pole or single pole and double throw or single throw. It can be extended to be multithrow.Contact bridging members which can be used include flat and arcuate members.Abutments for engagement with the actuator can be provided by a depression in the contact bridging member or outwardly struck portions thereof.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: August 1, 1978
    Inventor: David Allen Swann