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:
Dec. 10, 1985
Filed:
Nov. 01, 1982
David W Edwards, Scottsdale, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A variable rate, bi-directional slew control employing a dual-concentric potentiometer having a first shaft attached to a first spring for urging it to remain in an extreme clockwise position and a second shaft urged by a second spring to remain in an extreme counterclockwise position wherein an extension of a sleeve provides the means for manual manipulation of the first shaft in a counterclockwise direction and the second shaft in a clockwise direction. A first tap associated with the first shaft is electrically connected to a first off-zero detector which is itself connected to a pulse generator which is in turn connected to an up input of an up/down counter. A second tap associated with the second shaft is electrically connected to a second off-zero detector which is connected with a second pulse generator which is in turn connected to a down input of the up/down counter.