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Quarz-Zeit AG Patents
Assignee:
Quarz-Zeit AG
Address:
Frankfurt am Main, DE
No. of patents:
12
Patents:












Patent Number Title Of Patent Date Issued
4340828 Single phase stepping motor July 20, 1982
A single phase stepping motor, particularly for clocks, with a rotor having several pole teeth and a stator, the latter being made of two stator parts connected with one another via a bridge part, the latter carrying the excitation winding, of which each stator part on its free end has a
4315328 Battery-driven clock with indicator of the end of life of the battery February 9, 1982
A battery-driven clock with a timing stage which emits a control signal of a certain frequency to an electromechanical or electronic indicator stage, and a warning stage establishing the end of the service life of the battery. In the warning situation the warning stage influences the
4267472 Single phase stepping motor, particularly for clocks May 12, 1981
A single phase stepping motor, particularly for clocks, having a disc-like axially magnetized rotor with a number of rotor poles and a stator, which stator is made of at least two stator parts connected with one another via a bridge part carrying the excitation winding. Each stator part
4254491 Pulse control for an electric clock March 3, 1981
Electric clock with an oscillator, particularly a quartz oscillator, a frequency divider connected to the quartz oscillator and a control stage connected following the frequency divider, via which control stage a stepping motor, which stepping motor is coupled with the dial train, is
4250576 Electric clock February 10, 1981
An electric clock, particularly a quartz-crystal clock, having a motion work which is driven by an electric motor, and a pinion of an elastic material which meshes with an input gear of the motion work is seated on the shaft of the electric motor. The pinion is made of a soft-elastic
4217509 Single phase stepping motor August 12, 1980
A single phase stepping motor, particularly for clocks, with a disclike, axially magnetized rotor with a number of poles and a stator, the latter being made of two stator parts connected with one another via a bridge part, the latter carrying the excitation winding, of which each stator
4206377 Single phase stepping motor June 3, 1980
A single phase stepping motor, particularly for clocks, with a disc-like, axially magnetized rotor with a number of poles and a stator, the latter being made of two stator parts connected with one another via a bridge part, the latter carrying the excitation winding, of which each stator
4206376 Single phase stepping motor June 3, 1980
A single phase stepping motor, particularly for clocks, with a rotor having several pole teeth and a stator, the latter being made of two stator parts connected with one another via a bridge part, the latter carrying the excitation winding, of which each stator part on its free end trans
4206375 Single phase stepping motor June 3, 1980
A single phase stepping motor, particularly for clocks, with a multi-polar rotor and a multi-part stator, the latter carrying two excitation coils and on its free ends having stator pole teeth which are directed toward the rotor face side as well as a passage opening for the rotor shaft.
4201929 Single phase stepping motor May 6, 1980
A single phase stepping motor, particularly for clocks, with a rotor with several pole teeth, of which each pole tooth comprises a main pole and an auxiliary pole formed on the latter, and with a stator, the latter being made of two stator parts connected with one another via a bridge pa
4176515 Electronic clock, particularly a quartz clock December 4, 1979
An electronic clock, particularly a quartz clock, with a timer signal transmitting stage, an indicator system which at least contains a minute counter and an hour counter, as well as a decoding stage and a digital indicator board, and an alarm system which at least contains a presettable
4142147 Method and system for testing the accuracy of an electronic clock February 27, 1979
A method and system for testing the accuracy of the oscillators of electronic clocks includes transforming a frequency signal corresponding to the output of a clock oscillator into a non-sinusoidal signal having the same frequency as the frequency signal and filtering the non-sinusoi

 
 
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