US3788060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Watch with an electronic buzzer
Assignee: Individual
•
Filing: 1972-11-22
•
Granted: 1974-01-29
•
Expires: 1992-11-22
Abstract
Abstract A watch with an electronic buzzer which comprises a doubleconstructed back cover including an inner back cover on which a piezoelectric element is mounted to produce a mechanical buzz sound when a voltage is applied thereto and an outer back cover provided with a plurality of small holes for enhancing transmission of the buzz. A driving circuit for actuating or energizing the piezoelectric element is disposed in the watch case releasably from the back cover and the piezoelectric element. This construction enables the watch to be made small in size and assures the watertightness of the watch.
Inventors
- 👤 Y Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:20
CPC Classifications
G; G04; G04G; G04G13/00; G04G13/02; G04G13/021
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
182 words
A watch with an electronic buzzer comprising, a watch case for accommodating a watch movement, a back cover mounted on said housing, vibratable means capable of producing a mechanical sound when a voltage is applied thereto and mounted on said back cover, a driving circuit for actuating said vibratable means to produce a mechanical buzz sound at a predetermined time, means connecting said driving circuit releasably to said back cover and said vibratable means, means for connecting said vibratable means to said driving circuit, said driving circuit comprising a power source, a transistor having a collector connected in series with said power source and a timing switch; a time-constant circuit including a first capacitor and a resistor connected in parallel with said transistor; and an oscillating circuit including a second capacitor connected to a base of said transistor and a coil having one end connected to said second capacitor and the other end connected to said power source, said coil having a centertapped portion to which an emitter of said transistor is connected, and means connecting said vibratable means across said coil.
Claim 2
Dependent Claim
182 words
A watch with an electronic buzzer comprising, a watch case for accommodating a watch movement, a back cover mounted on said housing, vibratable means capable of producing a mechanical sound when a voltage is applied thereto and mounted on said back cover, a driving circuit for actuating said vibratable means to produce a mechanical buzz sound at a predetermined time, means connecting said driving circuit releasably to said back cover and said vibratable means, means for connecting said vibratable means to said driving circuit, said driving circuit comprising a power source, a transistor having a collector connected in series with said power source and a timing switch; a time-constant circuit including a first capacitor and a resistor connected in parallel with said transistor; and an oscillating circuit including a second capacitor connected to a base of said transistor and a coil having one end connected to said second capacitor and the other end connected to said power source, said coil having a centertapped portion to which an emitter of said transistor is connected, and means connecting said vibratable means across said coil.
Claim 3
Dependent Claim
87 words
A watch with an electronic buzzer comprising, a watch case for accommodating a watch movement, a back cover mounted on said watch case, a piezoelectric element capable of producing a mechanical sound when a voltage is applied thereto mounted on said back cover, a driving circuit for actuating said piezoelectric element to produce a mechanical buzz sound at a predetermined time, means connecting said driving circuit releasably to said back cover and said piezoelectric element, and additional means for connecting said piezoelectric element to said driving circuit.
Claim 4
Dependent Claim
87 words
A watch with an electronic buzzer comprising, a watch case for accommodating a watch movement, a back cover mounted on said watch case, a piezoelectric element capable of producing a mechanical sound when a voltage is applied thereto mounted on said back cover, a driving circuit for actuating said piezoelectric element to produce a mechanical buzz sound at a predetermined time, means connecting said driving circuit releasably to said back cover and said piezoelectric element, and additional means for connecting said piezoelectric element to said driving circuit.
Claim 5
Dependent Claim
33 words
A watch with an electronic buzzer according to claim 2, wherein said back cover comprises an inner back cover and an outer cover, and said piezoelectric element is mounted on said inner cover.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |