US3789196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Number of days integrating type time switch
Assignee: KOSHEI ARITA
•
Filing: 1972-06-20
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Granted: 1974-01-29
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Expires: 1992-06-20
Abstract
Abstract The time switch comprises a clock mechanism operating at a constant speed and a mechanical counter driven by the clock mechanism. The counter comprises a plurality of digit wheels for counting the number of days and a signal generator which is operated by the counter when it has counted a predetermined number of days.
Inventors
- 👤 M Kinemura
- 👤 K Arita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:31
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/27; G06M1/274; G06M3/00; G06M3/02; G06M3/021; G06M3/024
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
A number of days integrating type time switch comprising a clock mechanism operating at a constant speed, said clock mechanism including a constant speed motor and a gear reduction mechanism driven by said motor for converting the rotations of said motor for a 24-hour day into a decimal unit rotation, and a mechanical counter driven by said gear reduction mechanism, said counter including a plurality of decimal digit wheels for counting and indicating a number of days and a signal generator operated by said counter when it has counted a predetermined number of days.
Claim 2
Dependent Claim
94 words
A number of days integrating type time switch comprising a clock mechanism operating at a constant speed, said clock mechanism including a constant speed motor and a gear reduction mechanism driven by said motor for converting the rotations of said motor for a 24-hour day into a decimal unit rotation, and a mechanical counter driven by said gear reduction mechanism, said counter including a plurality of decimal digit wheels for counting and indicating a number of days and a signal generator operated by said counter when it has counted a predetermined number of days.
Claim 3
Dependent Claim
60 words
The time switch according to claim 1 which further includes manual means and an electromagnetic coil means for operating a reset means, said coil being connected to an external device through said signal generator whereby when said predetermined number of days has been counted said signal generator energizes said external device and said electromagnetic coil to automatically reset said counter.
Claim 4
Dependent Claim
40 words
The time switch according to claim 1 wherein said signal generator comprises a permanent magnet mounted on one of said digit wheels and a reed switch installed close to said one digit wheel to be operated by said permanent magnet.
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) | 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 |