Driving device for video cassette rewinder

Details Driving device for video cassette rewinder Driving device for video cassette rewinder

1990-03-06

1991-07-16

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

360 742, B65H 1814, G11B 1548

Patent

active

050318519

ABSTRACT:
An improved video cassette rewinder which comprises a base, a receptacle, a driving device, and a receptacle opening device, etc. The driving device comprises a single belt pulley provided beneath a rewinding shaft and above a receptacle opening device and a camming device. The belt pulley is provided with a pluraity of protrusion on the periphery thereof. The rewinding shaft will not be rotated when the rewinding of the video tape is ended due to the fact that the rewinding shaft is engaged with the reel of the video tape, and the belt pulley will be moved downward by the camming device, and one of the protrusions will push the receptacle opening device to move laterally and to be opened. The shifting device comprises four ratchet teeth equidistantly spaced provided at the outer peripheral edge of the bottom of the rewinding shaft, an orientation sleeve engaged with the belt pulley and provided with four guide slots for snap engagement of four ratchet teeth, and a compression spring disposed on the bottom of the belt pulley for biasing the belt pulley to its original position after the belt pulley has been moved downward by the camming device.

REFERENCES:
patent: 3759463 (1973-09-01), Yoshii
patent: 4522353 (1985-06-01), Yeh
patent: 4848699 (1989-07-01), Jing-Lin
patent: 4919357 (1990-04-01), Lin

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