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US4250573A Expired / Lapsed US ⏱️ 0.0 years remaining

Digital alarm wristwatch

Assignee: Suwa Seikosha KK
•
Filing: 1978-12-06
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Granted: 1981-02-10
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Expires: 1998-12-06
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Abstract

Abstract A digital display electronic alarm wristwatch which includes a watch case, a cover glass and a case back contains an electro-optical display device, electronic watch body and an alarm buzzer mounted in the watch case and case back not to overlap with the display device in plan view. The watch case is formed with buzzer cover holes on the display side of the case for releasing the alarm buzzer sound.

Inventors

  • 👤 Toshiaki Saito

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 15:44
CPC Classifications
G; G04; G04G; G04G17/00; G04G17/02; G04G13/00; G04G13/02; G04G13/021

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 214 words
An electronic alarm wristwatch case for supporting an alarm buzzer and digital display therein, comprising: a watch case having a front display surface and an interior, said display surface formed with at least one display opening and alarm buzzer opening on said display side and said interior formed with a first chamber for receiving time display means in registration with said display opening and a second chamber for receiving alarm buzzer means in registration with said buzzer opening, said first chamber and said second chamber in non-overlapping relation in plan view, said chambers openly communicating with each other on the back side of said wristwatch away from said buzzer cover opening for providing electrical connection between said first chamber and the alarm buzzer means in the second chamber; time display means disposed within said watch case in said first chamber for viewing through said display opening; and alarm buzzer means disposed within said second chamber so that said alarm buzzer means does not overlap said display means in plan view and sound emanating from said alarm buzzer means escapes through said buzzer openings in said display surface without being interrupted by a users wrist and a gasket means in said second chamber and surrounding said buzzer for watersealing the interior of the wristwatch case.
Claim 2
Dependent Claim 214 words
An electronic alarm wristwatch case for supporting an alarm buzzer and digital display therein, comprising: a watch case having a front display surface and an interior, said display surface formed with at least one display opening and alarm buzzer opening on said display side and said interior formed with a first chamber for receiving time display means in registration with said display opening and a second chamber for receiving alarm buzzer means in registration with said buzzer opening, said first chamber and said second chamber in non-overlapping relation in plan view, said chambers openly communicating with each other on the back side of said wristwatch away from said buzzer cover opening for providing electrical connection between said first chamber and the alarm buzzer means in the second chamber; time display means disposed within said watch case in said first chamber for viewing through said display opening; and alarm buzzer means disposed within said second chamber so that said alarm buzzer means does not overlap said display means in plan view and sound emanating from said alarm buzzer means escapes through said buzzer openings in said display surface without being interrupted by a users wrist and a gasket means in said second chamber and surrounding said buzzer for watersealing the interior of the wristwatch case.
Claim 3
Dependent Claim 27 words
The wristwatch case of claim 1, wherein said alarm buzzer means includes a vibrating diaphragm disposed on the side of said gasket means towards said buzzer opening.
Claim 4
Dependent Claim 21 words
The wristwatch case of claim 1, including a battery in the interior of said case, said battery overlapping the first chamber.
Claim 5
Dependent Claim 15 words
The wristwatch of claim 3, wherein said display means is a liquid crystal display device.

References Cited (Backward Citations)

US3462943A Cited
US3577876A Cited
US3638418A Cited
US3858389A Cited
US4068461A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-02-10 1984-08-11 1985-02-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-02-10 1988-08-11 1989-02-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-02-10 1992-08-11 1993-02-10 $7700.00 Window Closed / Lapsed

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