The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1999
Filed:
Mar. 18, 1997
Ralph W Dingle, Farmington Hills, MI (US);
Marketing Displays, Inc., Farmington Hills, MI (US);
Abstract
A non-sliding spring mechanism for picture and poster frames. A flat metal spring biasing member having a pair of opposed sawtooth or irregular edges is positioned between a rotating cover member and a stationary base member in each section of the frame device. The projections on the irregular edges of the spring members are preferably pointed and embed in the metal channels of the cover and base members and dig grooves therein, preventing the cover member and base member from sliding longitudinally relative to one another. Various configurations of toothed and pointed members can be utilized on the opposed irregular edges of the spring biasing member. Preferably, the irregular edges have one or more flat areas in order to prevent the spring members from embedding too deeply in the channels in the cover and base members.