Horology: time measuring systems or devices – Oscillating or reciprocating means
Patent
1978-12-21
1981-05-05
Weldon, Ulysses
Horology: time measuring systems or devices
Oscillating or reciprocating means
368160, 368157, 368 76, G04B 1700
Patent
active
042662915
ABSTRACT:
An electrical swing mechanism having a drive device with a rotor and a stator. The drive device carries out self-returning reciprocation with a rotation angle of the rotor. An intermittent drive transmission device transmits the rotation of the drive device to a utilization mechanism. An electric source unit is used for exciting the stator with a pulse current. The drive device has a rotor which is magnetized so that the same poles are formed on a diametral line intersecting the rotation axis thereof and a magnetization angle between different poles is 2 .alpha., and a stator whose magnetic pole angle .beta. is larger than said magnetization angle 2 .alpha.. The intermittent drive transmission device comprises a cut disk member having a ratchet pawl and is reciprocated by the drive device. A ratchet plate member having ratchet teeth are moved one pitch by one pitch by the ratchet pawl. The reset mechanism comprises a release lever for disengaging the ratchet pawl from the ratchet teeth and a correcting gear for turning the release lever.
REFERENCES:
patent: 2949571 (1960-08-01), Gerhard
patent: 3129554 (1964-04-01), Yasukawa
patent: 3134062 (1964-05-01), Held
patent: 3435311 (1969-03-01), Matsuzawa et al.
patent: 3597634 (1971-08-01), Flaig
patent: 3691753 (1972-09-01), Kurita
patent: 3711754 (1973-01-01), Nemoto
patent: 3737746 (1973-06-01), Cielaszyk et al.
patent: 3766729 (1973-10-01), Diersbock
Koizumi Shigenobu
Obata Katsuhiro
Iida Sankyo Co., Ltd.
Weldon Ulysses
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