Time recorder with printing wheels and impression hammer

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United States of America Patent

PATENT NO 4755835
SERIAL NO

06911250

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A time recorder includes a clock circuit for producing a clock signal, a detector for detecting when a time card is loaded in the time recorder to produce a detection signal, and a correcting circuit for producing a correcting signal effective to correct time information. A printing wheel assembly is rotationally driven to print the time information which is displayed in a display device. A positioning mechanism receives the loaded time card and moves relative to the printing wheel assembly for positioning the loaded time card in a print position relative to the printing wheel assembly. A hammer is opposed to the loaded time card and actuated to act thereon against the printing wheel assembly to thereby print the time information. The display device, printing wheel assembly and positioning mechanism are driven in synchronization with one another to update and correct the displayed time information, the time information to be printed and the position of the time card in response to the clock and correcting signals. The hammer is actuated in response to the detection signal without relative interference with the drive of the printing wheel assembly and positioning mechanism.

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First Claim

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Patent Owner(s)

  • SEIKO PRECISION INC.

International Classification(s)

  • Non-US Classification not provided for expired patents

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishikawa, Tadashi Yotsukaido, JP 81 921
Oda, Hajime Yotsukaido, JP 44 280
Ogihara, Masuo Yotsukaido, JP 34 195
Takami, Atsushi Yotsukaido, JP 26 67
Tamura, Toshiya Yotsukaido, JP 42 563

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