Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1989-10-16
1990-09-25
Gellner, Michael L.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 71, G03B 118
Patent
active
049596721
ABSTRACT:
A motor-driven film winder for a camera has an internal gear portion (5a) fixed to a motor (1), one or two step-shaped planet gears (7), (8) having first gears (7a), (8a) to mesh with a pinion gear (4) driven by the motor and the internal gear portion (5a) and second gears (7b), (8b) having a larger diameter than first gears (7a), (8b), and engaging with an internal gear (11a) provided on inside wall of the take-up spool (11), whereby rotation of the motor is transmitted to the take-up spool (11) with largely reduced speed of rotation and largely multiplied torque.
REFERENCES:
patent: 4274726 (1981-06-01), Yoneyama et al.
patent: 4479705 (1984-10-01), Tamamura et al.
Aoki Naofumi
Furutsuka Naoyuki
Morioka Akitoshi
Watanabe Hiroshi
Yoshino Tsunemi
Dang Khanh
Gellner Michael L.
West Electric Company Ltd.
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