US4440503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic timer
Assignee: Omron Corp
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Filing: 1981-09-04
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Granted: 1984-04-03
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Expires: 2001-09-04
Abstract
Abstract An electronic timer with a case having two windows and a manually adjustable control on the exterior. The output of an oscillator within the case is applied to a first frequency divider dividing the frequency by a factor manually selected by a switch indicating the factor in one window. The output of the first divider is applied to a second divider dividing by a factor selected manually by a second switch viewable through the other window and indicating timing in seconds, minutes, hours or days.
Inventors
- 👤 Isao Arichi
- 👤 Tetuya Waniisi
- 👤 Takuji Koh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:48
CPC Classifications
G; G04; G04F; G04F1/00; G04F1/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
144 words
An electronic timer comprising: a case having first and second windows and a manually adjustable control therein for setting a desired time; an oscillator within said case; a first frequency divider within said case for dividing the output of said oscillator at one of a plurality of first dividing factors; first selecting means within said case for manually selecting one of said first factors including switch means having a display viewable through said first window and indicating a multiplication factor for the set time; a second frequency divider within said case for dividing the output of said first selecting means by one of a plurality of second dividing factors; and second selecting means within said case for manually selecting one of said second factors including switch means having a display viewable through said second window and indicating timing in seconds, minutes, hours, or days.
Claim 2
Dependent Claim
144 words
An electronic timer comprising: a case having first and second windows and a manually adjustable control therein for setting a desired time; an oscillator within said case; a first frequency divider within said case for dividing the output of said oscillator at one of a plurality of first dividing factors; first selecting means within said case for manually selecting one of said first factors including switch means having a display viewable through said first window and indicating a multiplication factor for the set time; a second frequency divider within said case for dividing the output of said first selecting means by one of a plurality of second dividing factors; and second selecting means within said case for manually selecting one of said second factors including switch means having a display viewable through said second window and indicating timing in seconds, minutes, hours, or days.
Claim 3
Dependent Claim
14 words
A timer as in claim 1 wherein said switch means each include rotary switches.
Claim 4
Dependent Claim
22 words
A timer as in claim 1 wherein said switch means each include insertable set keys having distinct configurations to specify the factors.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |