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:
Mar. 10, 1987
Filed:
Dec. 21, 1984
Gordon F Redington, St. Paul, MN (US);
SnyderGeneral Corporation, Minneapolis, MN (US);
Abstract
A variable speed drive of the type having a fixed pulley, a variable pulley mounted on a motor shaft and a drive belt coupling the two pulleys. The motor is pivotally mounted on a frame. An actuator is provided for pivoting the motor and variable pulley through an arc to vary the distance between the pulleys which changes the pitch diameter of the variable pulley and the drive ratio of the system. The variable pulley has one fixed face and one movable face, and a cam system is provided and positioned for engagement upon arcuate movement of the motor to cause a predetermined amount of lateral movement of the motor and variable pulley to compensate for changes in the drive line of the variable pulley to movement of the movable face thereof. In this manner, the cam system maintains the variable pulley, fixed pulley and drive belt in accurate alignment throughout the entire range of movement of the motor and corresponding range of variation in the drive ratio of the system.