Patents by Inventor Fred Kempler

Fred Kempler 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).

  • Bi-directional GFCI
    Patent number: 7869173
    Abstract: A bi-directional fault circuit interrupter comprising a first connection interface, a second connection interface, at least one fault circuit, and at least one switch which is movable from at least one first position to at least one second position to selectively electrically connect the fault circuit to either the first connection interface or the second connection interface. There are also a plurality of conductors configured to electrically connect the first connection interface to the switch and the second connection interface to the switch.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: January 11, 2011
    Assignee: Leviton Manufacturing Company, Inc.
    Inventor: Fred Kempler
  • BI-DIRECTIONAL GFCI
    Publication number: 20090296288
    Abstract: A bi-directional fault circuit interrupter comprising a first connection interface, a second connection interface, at least one fault circuit, and at least one switch which is movable from at least one first position to at least one second position to selectively electrically connect the fault circuit to either the first connection interface or the second connection interface. There are also a plurality of conductors configured to electrically connect the first connection interface to the switch and the second connection interface to the switch.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 3, 2009
    Applicant: LEVITON MANUFACTURING COMPANY, INC.
    Inventor: Fred KEMPLER
  • Optical magnifying device
    Patent number: 4128306
    Abstract: The present invention concerns an optical magnifying device consisting of a block having at least two holes at right angles in the same plane, these two holes which pass right through the block each having close to one end of the hole, a magnifying lens whose focal point is approximately at the level of the other end of the hole.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: December 5, 1978
    Inventor: Fred Kempler