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:
May. 02, 1989
Filed:
May. 06, 1987
Nobuyoshi Sawada, Toyama, JP;
Kenji Takeshima, Toyama, JP;
Origin Co., Ltd., Tokyo, JP;
Abstract
A framing bar connecting method for forming a frame by connecting adjacent framing bars with framing bar connectors. Each framing bar connector comprises: an L-shaped connecting plate having right-angled first and second arms, a slot formed in the first arm and threaded holes formed in the second arm; an L-shaped bottom plate having right-angled first and second arms and an opening formed in the first arm; and a lever provided with a cam at the base end thereof. In assembling a frame, the first arm of the connecting plate and the first arm of the bottom plate are inserted together with the lever in the dovetail groove of one of framing bars, the second arm of the connecting plate and the second arm of the bottom plate are inserted in the dovetail groove of the other framing bar, screws are screwed through the threaded holes of the second arm of the connecting plate to press the second arm of the connecting plate and the second arm of the bottom plate firmly against the inner surfaces of the dovetail groove, and then the lever is turned down so that the nose of the cam catches the bottom surface of the dovetail groove firmly and the cam presses the first arm of the connecting plate firmly against the inner surface of the dovetail groove as the lever is turned.