专利检索_ 用同步马达驱动的时钟专利检索_ 用同步马达驱动的时钟专利检索查询

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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
81	Synchronous timing motor assembly	US7765860	1960-12-22	US3142774A	1964-07-28	LUNDIN ROBERT S

82	Battery powered synchronous motor	US21334262	1962-07-30	US3142012A	1964-07-21	CHRISTIE PETRIDES

83	Alternating current synchronous electric motors	US6151060	1960-10-10	US3132271A	1964-05-05	HENRY MIDGLEY ALBERT

84	Means for adjustably connecting together two parts	US10610261	1961-04-27	US3059737A	1962-10-23	FRANCIS MCGUIRK

85	Electric clock motor	US75641658	1958-08-21	US3035194A	1962-05-15	CHARTIER EDMUND G

86	Simulated swinging pendulum clock	US81474859	1959-05-21	US2995005A	1961-08-08	BOYLES ROBERT L

87	Synchronous motor time meter	US41872741	1941-11-12	US2384581A	1945-09-11

88	Electrical motor for timing mechanism	US26512039	1939-03-31	US2205077A	1940-06-18	SAMUEL ZULLO

89	Time measuring mechanism	US4649235	1935-10-24	US2099759A	1937-11-23	EMIL SPAHN

90	Electric clock motor	US61009732	1932-05-09	US2003116A	1935-05-28	LAURENS HAMMOND

91	Synchronous motor	US3627525	1925-06-10	US1665890A	1928-04-10

92	JPS61502721A -	JP50272784	1984-07-11	JPS61502721A	1986-11-20

93	JPS60501935A -	JP50289184	1984-07-30	JPS60501935A	1985-11-07

94	Timer	JP11691783	1983-06-30	JPS6010195A	1985-01-19	OGAWA YASUO; TABUCHI SADATOSHI; ZAIZEN KATSUNORI
PURPOSE:To operate a timer accurately with the similar operation according to the power source frequency used by controlling the electric energization of a synchronous motor adapted to form timer discriminating the frequency of the power source supplied. CONSTITUTION:The commercial power source frequency and the 55Hz frequency are processed with frequency-voltage conversion circuits 11 and 12 of a frequency discriminator circuit 5. When the commercial voltage is 50Hz, the output of a comparator 13 moves to a high level and with a switch 7a of a control circuit 6 kept ON, a synchronous motor forming a timer is driven continuously with a 50Hz power source. On the other hand, when the commercial power source is 60Hz, the output of the comparator 13 goes down to a low level and the switch 7a is turned ON intermittently by a pulse with the duty ratio of 5/6 via an OR circuit 14 to feed the synchronous motor with a 60Hz power source intermittently, which is the same in the revolutions as when it is 50Hz. Therefore, the timer is operated accurately with the similar operation according to the power source frequency being used.
95	JPS5616636B1 -	JP2654669	1969-04-04	JPS5616636B1	1981-04-17

96	JPS54111612U -	JP17191677	1977-12-22	JPS54111612U	1979-08-06

97	Electromagnetic motor for watch	JP15981478	1978-12-20	JPS5496719A	1979-07-31	UIRII KURUJITSUKUSU

98	JPS5344203B2 -	JP2274573	1973-02-27	JPS5344203B2	1978-11-27

99	JPS5334522Y2 -	JP6934871	1971-08-03	JPS5334522Y2	1978-08-24

100	JPS507459B1 -	JP5391464	1964-09-22	JPS507459B1	1975-03-26

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