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:
Jun. 29, 1993
Filed:
Jul. 16, 1991
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A driving system of a magnetic recording/reproducing apparatus includes a motor, a pulley receiving rotation of the motor, a forward direction rotation body coaxially provided with the pulley, a reverse direction rotation body which always engages with the forward direction rotation body and rotates in the reverse direction, first and second reel stands which engage with respective reels of a cassette tape, and a moving rotation body which engages with the forward direction rotation body and the first reel stand in forward direction rotation, and engages with the reverse direction rotation body and the second reel stand in reverse direction rotation. A forward direction torque generating mechanism is provided between the forward direction rotation body and the moving rotation body and a reverse direction torque generating mechanism is provided between the reverse direction rotation body and the moving rotation body. The forward direction/reverse direction torque generating mechanisms include two friction transmitting members for generating torque suitable to constant speed run and high speed run, respectively. A reflection plate for detecting rotation of the first and second reel stands is fixed to either one of the forward direction rotation body or the reverse direction rotation body. A light emitting light receiving element for detecting rotation of the rotation plate is provided at a position facing to the reflection plate.