US3885381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery-powered timepiece with externally accessible circuitry
Assignee: Suwa Seikosha KK
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Filing: 1974-09-25
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Granted: 1975-05-27
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Expires: 1994-09-25
Abstract
Abstract A battery-powered timepiece has a transparent cover over the dial, said cover having thereon indicia, including decorative material, of a conductive metal. Conductive leads pass over the edge of the transparent cover and make pressure contacts with leads connected with selected points of the circuitry of said watch. The exposed metallic regions on the surface of the transparent cover make it possible to check out the circuitry, and, where a secondary battery is used, to recharge the battery.
Inventors
- 👤 Masami Kasai
- 👤 Yoshio Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:31
CPC Classifications
G; G04; G04G; G04G9/00; G04G9/0023; G04G9/0029; G04G9/0035; G04B; G04B39/00; G04C; G04C3/00; G04C3/008
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
57 words
In a quartz-crystal oscillator timepiece driven by a battery, and having a transparent cover, the improvement comprising a plurality of adherent conductive elements on the exterior of said cover, said elements being electrically connected to the circuitry of said timepiece so that the voltage of said battery may be monitored by making contact with selected conductive elements.
Claim 2
Dependent Claim
57 words
In a quartz-crystal oscillator timepiece driven by a battery, and having a transparent cover, the improvement comprising a plurality of adherent conductive elements on the exterior of said cover, said elements being electrically connected to the circuitry of said timepiece so that the voltage of said battery may be monitored by making contact with selected conductive elements.
Claim 3
Dependent Claim
33 words
The improvement as defined in claim 1, wherein said elements are so connected to said circuitry that the frequency of vibration of said oscillator may be measured by making contact with selected elements.
Claim 4
Dependent Claim
23 words
The improvement as defined in claim 1, wherein said cover is of an inorganic glass and said conductive elements are fired metal resinates.
Claim 5
Dependent Claim
86 words
The improvement as defined in claim 1, wherein said crystal is removably seated in an insulated case and each of said adherent conductive elements has electrically connected thereto a first continuous lead passing over the edge of said crystal to an interior region of said timepiece, and said circuitry has a plurality of second leads attached to selected portions thereof, said first and second leads being so disposed that seating said crystal in said case effects pressure contacts between pairs of said first and second leads.
Claim 6
Dependent Claim
21 words
The improvement as defined in claim 1, wherein said timepiece is of the analog type and said conductive elements are indicia.
Claim 7
Dependent Claim
21 words
The improvement as defined in claim 1, wherein said timepiece is of the digital type and said conductive elements are decorative.
Claim 8
Dependent Claim
42 words
The improvement as defined in claim 1, wherein said improvement Further comprises a switch operable from the exterior of said timepiece for disconnecting said battery from said circuitry, thereby making it possible to recharge said battery without removing same from said timepiece.
Claim 9
Dependent Claim
13 words
The improvement as defined in claim 1, wherein said timepiece is a wristwatch.
Claim 10
Dependent Claim
16 words
The improvement as defined in claim 1, wherein said conductive elements are of a tarnish-resistant metal.
Claim 11
Dependent Claim
26 words
The improvement as defined in claim 9, wherein said conductive elements are of a member of the group consisting of gold, gold alloys, platinum and silver.
References Cited (Backward Citations)
US2974474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |