IT1043212B - Electric motor for clock mechanism - has crystal oscillator oscillating blade magnetically coupled to rotor - Google Patents

Electric motor for clock mechanism - has crystal oscillator oscillating blade magnetically coupled to rotor

Info

Publication number
IT1043212B
IT1043212B IT2808575A IT2808575A IT1043212B IT 1043212 B IT1043212 B IT 1043212B IT 2808575 A IT2808575 A IT 2808575A IT 2808575 A IT2808575 A IT 2808575A IT 1043212 B IT1043212 B IT 1043212B
Authority
IT
Italy
Prior art keywords
rotor
blade
electric motor
crystal oscillator
magnetically coupled
Prior art date
Application number
IT2808575A
Other languages
Italian (it)
Original Assignee
Horstmann Magnetics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Horstmann Magnetics Ltd filed Critical Horstmann Magnetics Ltd
Priority to IT2808575A priority Critical patent/IT1043212B/en
Application granted granted Critical
Publication of IT1043212B publication Critical patent/IT1043212B/en

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Landscapes

  • Electromechanical Clocks (AREA)

Abstract

The rotor of this motor can be a toothed wheel (2) made from ferro-magnetic material. An L-shaped permanent magnet (4) is mounted on a blade (1) so that it is oscillated by a coil (5) driven by a crystal-oscillator. It also causes the rotor to rotate by exciting its teeth. The blade is cantilevered from a mounting block and has the desired natural resonant frequency of oscillation. The drive frequency is reduced by a factor of f/2Q, where Q is the Quality factor of the blade. This gives automatic starting of the motor. The motor is suitable for timing mechanisms and has a simple construction.
IT2808575A 1975-10-08 1975-10-08 Electric motor for clock mechanism - has crystal oscillator oscillating blade magnetically coupled to rotor IT1043212B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2808575A IT1043212B (en) 1975-10-08 1975-10-08 Electric motor for clock mechanism - has crystal oscillator oscillating blade magnetically coupled to rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2808575A IT1043212B (en) 1975-10-08 1975-10-08 Electric motor for clock mechanism - has crystal oscillator oscillating blade magnetically coupled to rotor

Publications (1)

Publication Number Publication Date
IT1043212B true IT1043212B (en) 1980-02-20

Family

ID=11222892

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2808575A IT1043212B (en) 1975-10-08 1975-10-08 Electric motor for clock mechanism - has crystal oscillator oscillating blade magnetically coupled to rotor

Country Status (1)

Country Link
IT (1) IT1043212B (en)

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