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:
May. 08, 1990
Filed:
Dec. 29, 1988
Bruce Malkin, Newtown, CT (US);
Norwalk Innovation Lab, Inc., Milford, CT (US);
Abstract
The flat undersurface of the turntable is supported on three idler casters. The disc is driven on the periphery by a gear motor which has a drive wheel attached. The direction of rotation of the turntable can be reversed by changing the direction of the motor electrically and by moving the position of the motor so that it tends to drive into the disc as it turns thereby increasing the wheel pressure and friction as the load increases. A spring biases the drive wheel towards this position so that when the power is turned off the motor and gear train acts as a brake. A pair of guide wheels act with the drive wheel to center the turntable. The motor speed is controlled by changing the resistance of a potentiometer on a variable speed motor controller. The potentiometer is converted from a circular motion to a linear motion by a capstan and cable arrangement. A slide moves, when pulled by the stock. The slide pulls a cable that is wrapped around a capstan which is attached to the speed control potentiometer. The cable is pinned to the capstan and is weighted at the other end to provide a constant tension but variable speed supply of stock.