公开(公告)号：US3912280A

公开(公告)日：1975-10-14

申请号：US42488873

申请日：1973-12-14

Applicant: VICTOR COMPANY OF JAPAN

Inventor： NAKADAIRA ISAMU ,  SAITO TAKASHI

IPC: G11B3/085 ,  G11B17/02

CPC classification number: G11B3/085

Abstract: Improvement is made in a known automatic mechanism provided for automatic pickup arm returning or for automatic record disk changing. In order to perform the known automatic operation, a single complete revolution of a gear is utilized. The gear engages a driving pinion, which rotates with a turntable, after completion of play to effect rotation of the gear for one revolution. The intention of the present invention is to ensure this engagement between the driving pinion and the gear by providing a frictional member between a pair of pawls which effect engagement of the gear. The frictional member is sheetlike and has one uneven surface to prevent excessively high frictional forces and seizure between the pawls and to reduce variations in the coefficient of friction.

公开(公告)号：US3570318A

公开(公告)日：1971-03-16

申请号：US3570318D

申请日：1969-10-16

Applicant: VICTOR COMPANY OF JAPAN

Inventor： NAKADAIRA ISAMU

IPC: B62M9/06 ,  F16H9/06 ,  G11B19/26 ,  F16H7/08

CPC classification number: F16H9/06 ,  G11B19/26

Abstract: A TURNTABLE ROTATING SPEED CHANGING DEVICE COMPRISING AN OPERATION LEVER MEMBER TO TURN IN A HORIZONTAL PLANE PARALLEL TO A MOTOR BOARD AND A BELT SHIFTING LEVER MEMBER FOR THE PREFERENTIAL CHANGE OF ROTATION SPEED OF A TURNTABLE DRIVEN BY A BELT. THE LATTER SHIFTING LEVER MEMBER IS TRANSMITTED THE TURNING FORCE OF SAID OPERATION LEVER

MEMBER CONVERTED OF ITS TURNING PLANE, AND TURNED IN A PLANE VERTICAL TO SAID MOTOR BOARD TO SHIFT THE BELT UPWARDLY OR DOWNWARDLY BETWEEN ON STEPS OF A MULTISTEPPED PULLEY.