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:
Sep. 13, 1983
Filed:
Aug. 21, 1981
Alan T Ford, Green Harbor, MA (US);
Norman G Graf, Hingham, MA (US);
Other;
Abstract
A drafting instrument is provided for making pictorial drawings, especially axonometric projections. The instrument is in the form of a template which is placed over the drafting surface and may be attached to a drafting machine, straight edge, T-square, or the like. The template is formed with a straight lower edge, perpendicular side edges and a pair of upper edges defining an angle corresponding to the angle of the view to be drawn, i.e. dimetric, trimetric, isometric. The template includes a vertical centerline at the junction of the two upper edges. The margins along each angled upper edge is marked with graduated markings corresponding to the particular angle of the template and parallel to the adjacent angled upper edge. The template also includes a rectangular window or slot extending parallel to the lower edge and provided with graduated markings formed along the edges thereof for use in preparing the views.