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. 14, 1976
Filed:
Jan. 22, 1975
Richard A Brookfield, Newton, MA (US);
Other;
Abstract
A device for use in measuring the pitch diameter of gears has first and second pin-holding units movable along a straight, inclined pathway with means to lock one unit thereto against movement in a predetermined position relative to a gauge. Each pin extends upwardly from its unit and is backed by a V-shaped projection. A support is adjustable to position a gear in a plane transversely of the exposed ends of the pins with one pin seated between a pair of gear teeth and with a diametrically opposed pair of gear teeth positioned to have the other pin seated between them when the other unit is moved in the appropriate direction. The pins are dimensioned to seat against the pitch line of the teeth against which they are seated with the distance between the pins reflected by the gauge to give the relation of the actual pitch diameter to the ideal.