Patents by Inventor Charles S. Mertler

Charles S. Mertler 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: 6080967
    Abstract: An electric toaster comprising a heating element; and a combined user actuation and thermostat switch assembly connected to the heating element. The switch assembly comprises a thermostat having a bi-metal electrical contact blade and a snap-acting electrical contact blade, and a user actuated member for moving the snap-acting blade towards the bi-metal blade. The switch assembly provides an electrical path between the heating element and an electrical power supply cord without an additional separate user actuated power switch along the path.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: June 27, 2000
    Assignee: HP Intellectual Corp.
    Inventors: James A. Sandor, Charles Z. Krasznai, Charles S. Mertler, Jr., deceased
  • Patent number: 3964004
    Abstract: A combined thermostatic switch and tilt switch is disclosed which is of the stack type with slow make and break contacts. A temperature responsive element such as a bimetal actuates a set of contacts and an attitude responsive means such as a swingable pendulum also actuates a set of contacts. These two responsive means may actuate the same set of contacts or may actuate different sets of contacts in various embodiments of the invention, but a second set of contacts is provided in the switch as a standby set of contacts which may be actuated by one of the responsive means in the event that the first set of contacts fails to be actuated, e.g. by being welded together or some other malfunction. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: June 15, 1976
    Inventor: Charles S. Mertler