US4551028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable electronic watch
Assignee: Individual
•
Filing: 1983-12-19
•
Granted: 1985-11-05
•
Expires: 2003-12-19
Abstract
Abstract An electronic watch of relatively few parts and consequent inexpensive construction employing a liquid crystal display (LCD), an integrated circuit chip and a watch battery. The watch is electrically dormant until activated by means of a pull tab. Adjustments are made through holes in the watch case.
Inventors
- 👤 John B. Rowen
- 👤 Christopher M. Rowen
- 👤 Charles Janusis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:35
CPC Classifications
G; G04; G04G; G04G19/00; G04G19/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
205 words
A disposable electronic watch comprising: a case with a plurality of sides and having an upper section with an opening at the top and a lower section containing a plurality of cavities; a wafer substrate of non-conducting material sandwiched between the said upper and lower sections of said case and having a top side and a bottom side; a display unit attached to the top side of said wafer substrate and positioned at the said opening of the said upper section of the said case; an electronic circuit chip for providing timing signals to the said display unit attached to the said bottom side of the said wafer substrate and fitting into one said cavity in the said lower section of the said case; a battery unit with a top side and a bottom side, seated in one said cavity of the said lower section of the said case and having its said top side positioned against the said bottom side of the said wafer substrate; a plurality of electrical leads on and through the said wafer substrate operatively connecting said display unit, said elctronic chip and said battery unit; and a means for blocking activation of said battery prior to operation of said watch.
Claim 2
Dependent Claim
205 words
A disposable electronic watch comprising: a case with a plurality of sides and having an upper section with an opening at the top and a lower section containing a plurality of cavities; a wafer substrate of non-conducting material sandwiched between the said upper and lower sections of said case and having a top side and a bottom side; a display unit attached to the top side of said wafer substrate and positioned at the said opening of the said upper section of the said case; an electronic circuit chip for providing timing signals to the said display unit attached to the said bottom side of the said wafer substrate and fitting into one said cavity in the said lower section of the said case; a battery unit with a top side and a bottom side, seated in one said cavity of the said lower section of the said case and having its said top side positioned against the said bottom side of the said wafer substrate; a plurality of electrical leads on and through the said wafer substrate operatively connecting said display unit, said elctronic chip and said battery unit; and a means for blocking activation of said battery prior to operation of said watch.
Claim 3
Dependent Claim
19 words
A disposable electronic watch in accordance with claim 1 wherein: the display unit is a light emmitting diode (LED).
Claim 4
Dependent Claim
19 words
A disposable electronic watch in accordance with claim 1 wherein: the display unit is a liquid crystal display (LCD).
Claim 5
Dependent Claim
20 words
A disposable electronic watch in accordance with claim 3 further comprising: a time adjustment means on the said wafer substrate.
Claim 6
Dependent Claim
19 words
A disposable electronic watch in accordance with claim 4 wherein: the said case is made of a polymer resin.
Claim 7
Dependent Claim
61 words
A disposable electronic watch in accordance with claim 5 wherein: the means for blocking activation of said battery prior to operation of said watch is a flat, insulated, removeable insert positioned between the top of the said battery and the bottom side of the said wafer substrate, and having two ends, one end of which protrudes outside of the said case.
Claim 8
Dependent Claim
16 words
A disposable electronic watch in accordance with claim 6 wherein the said removable insert is plastic.
References Cited (Backward Citations)
US4223521A
Cited
US4251604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |