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:
Jun. 07, 1977
Filed:
Mar. 23, 1976
Applicant:
Inventor:
Robert M Bonaddio, Monroeville, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B26D / ;
U.S. Cl.
CPC ...
83-8 ; 83-7 ; 83 12 ; 33 3 / ;
Abstract
A device for applying a constant force to a glass scoring wheel includes a pivotally mounted L-shaped lever arm having the scoring wheel rotatably mounted at one end of the horizontal member and an adjustable vertical member. A constant force coil spring biases the vertical member to pivot the horizontal member in a direction to urge the scoring wheel at a constant predetermined force against the glass sheet. The constant predetermined force acting on the scoring wheel is a function of the height of the vertical arm.