Self contained battery operated clock fabricated on a single pri

Details Self contained battery operated clock fabricated on a single pri Self contained battery operated clock fabricated on a single pri

1975-01-20

1976-09-21

Weldon, Ulysses

58 19R, 58 23BA, G04C 300

Patent

active

039811395

ABSTRACT:
A battery operated quartz crystal controlled alarm clock includes a single printed circuit board having a quartz crystal controlled oscillator and an oscillator controlled drive circuit mounted directly on the single printed circuit board. Additional components as for example a time display unit, an alarm signal source, a disconnect switch for the alarm signal source and one or more batteries are all arranged directly on the same circuit board with direct electrical contact being established between the components and the conductive areas plated on the circuit board. The release spring of an electro-mechanical movement is mounted on the conductor side of the circuit board and serves to establish electrical contact between two conductive areas of the circuit board to complete an electrical circuit for energizing the alarm signal source. The movement is mounted on the opposite side of the printed circuit board and communicates with the release spring through an aperture formed in the printed circuit board. All of the electrical connections are designed to substantially reduce the number of connecting members and the number of soldering operations required to produce the clock.

REFERENCES:
patent: 2599710 (1952-06-01), Hathaway
patent: 3339117 (1967-08-01), Fisher
patent: 3375423 (1968-03-01), Mayer et al.
patent: 3509715 (1970-05-01), DeKoster
patent: 3583148 (1971-06-01), Wolber
patent: 3583149 (1971-06-01), Ganter
patent: 3712044 (1973-01-01), Wolber et al.
patent: 3757510 (1973-09-01), Dill
patent: 3838568 (1974-10-01), Zurcher et al.

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