Patents by Inventor Phillip W. Dwyer

Phillip W. Dwyer 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).

  • Pneumatic actuator for a patient call system
    Patent number: 5155309
    Abstract: A pneumatically actuated switching device comprises a pneumatic bulb including a base plate for anchoring the bulb by frictional contact with surfaces in contact therewith. The base plate further having pneumatic seal about an outer periphery thereof, and an actuator dome having a convexly extended pneumatic activation wall supported by an outer peripheral annular rim engaged with the base plate for pneumatic sealing with the seal to define a pneumatic pump chamber. The bulb further including a conduct for conducting a quantity of air pressurized by operation of the dome and, electrically conductive switch responsive to the discharge of a volume of air pressurized by the pneumatic bulb for producing a corresponding electrical signal.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: October 13, 1992
    Assignee: Dwyer Precision, Inc.
    Inventor: Phillip W. Dwyer
  • Pneumatic actuator for an electric switch
    Patent number: D339570
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: September 21, 1993
    Assignee: Dwyer Precision, Inc.
    Inventor: Phillip W. Dwyer