Abstract: A picture frame made of metal extrusions of identical cross sectional shape is assembled at its corners by the use of corner plates and cam operating buttons. The plates have cam ramps formed therein and the buttons have integral cam lugs. A quarter turn with a screwdriver will tighten or loosen the assembly to close or open a corner.
Type:
Grant
Filed:
January 18, 1982
Date of Patent:
September 13, 1983
Assignees:
David G. Reilich, Unipak, Inc., Jeffrey J. Quinn