Patents by Inventor Donald D. Szymanek

Donald D. Szymanek 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: 4891737
    Abstract: A quick fit lens is provided including a lens body having a transparent face wall and formed with a channel disposed in confronting relationship with respect thereto for sliding receipt of a planar diffuser light panel.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: January 2, 1990
    Assignee: Thin-Lite Corporation
    Inventor: Donald D. Szymanek
  • Patent number: 4772216
    Abstract: A light fixture including a channel-shape open ended housing having a top wall and opposed walls. End caps are provided for the housing, each including an end plate with a pair of longitudinally extending tabs spaced laterally apart and formed on their proximate edges with longtiudinal tongues. The caps are reversible such that in one mounted position the tabs project longitudinally outwardly from the housing for acting as mounting tabs when the housing is to be recessed upwardly in the overhead for flush mounting. The caps may be reversed on the ends of the housing to dispose the tabs within the housing itself. In this configuration a pair of lamp sockets may be mounted directly from the tabs. The lamp sockets are formed on their opposite sides with longitudinal grooves into which such tongues are received in a friction fit arrangement to be held in position.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: September 20, 1988
    Assignee: Thin-Lite Corporation
    Inventor: Donald D. Szymanek
  • Patent number: D300471
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: March 28, 1989
    Assignee: REC Specialties
    Inventor: Donald D. Szymanek
  • Patent number: D300874
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: April 25, 1989
    Assignee: REC Specialties
    Inventor: Donald D. Szymanek
  • Patent number: D307059
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: April 3, 1990
    Assignee: Thin-Lite Corporation
    Inventor: Donald D. Szymanek
  • Patent number: D435131
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: December 12, 2000
    Assignee: Thin-Lite Corporation
    Inventor: Donald D. Szymanek