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:
Feb. 25, 1992
Filed:
Jul. 31, 1991
Thomas E Dash, Aurora, IL (US);
Wallace Computer Services, Inc, Hillside, IL (US);
Abstract
A method of making a core lock shaft for supplying paper to a computer printer including the steps of cutting an actually elongated recess in the periphery of a cylindrical shaft midway of the shaft length and to a predetermined depth to provide a chordal bottom wall, grinding a plurality of axially extending transversely spaced slots in the bottom wall to provide a plurality of rack teeth, providing a length of pinion wire of a diameter slightly greater than the predetermined depth of the recess, drilling the ends of the pinion wire to provide axially extending bores and inserting a dowel pin in each bore with a portion of the dowel pin length projecting axially beyond the pinion wire ends, mounting the pinion wire in the recess with the pinion teeth in engagement with the rack teeth and installing clips at the ends of the recess in covering relation to the projecting portions of the dowel pins.