Patent US3833819A successfully refreshed from Google Patents.
US3833819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Home simulator
Assignee: Individual
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Filing: 1973-05-29
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Granted: 1974-09-03
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Expires: 1993-05-29
Abstract
Abstract This device is a system for pseudo-random electrical switching of lights and/or small radios in the home or office. Timing of the switching intervals is unpredictable, except by long-time (weekly) observance. A combination of two (2) non-synchronous clocks and a random-cut cam-wheel is used to operate a microswitch. That switch controls the action of a stepping-switch for electrical distribution to lamps or small radios. The stepping-switch is wired for non-consecutive distribution to increase the appearance of random time intervals.
Inventors
- 👤 J Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:24
CPC Classifications
G; G04; G04C; G04C23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A pseudo-random timing system including a first 24 hour timer, a second timer non-synchronous with, but turned on and off by, the first 24 hour timer, a random-cut cam wheel connected to the output shaft of the second timer, a microswitch, turned on and off in a pseudo-random timed operation by the rotation of said cam wheel, and a stepping-switch activated by a pulse of DC electric power caused by the turning on of said microswitch, said stepping-switch causing the distribution of AC electric power through said first 24 hour timer to a number of non-consecutively wired outlets.
Claim 2
Dependent Claim
98 words
A pseudo-random timing system including a first 24 hour timer, a second timer non-synchronous with, but turned on and off by, the first 24 hour timer, a random-cut cam wheel connected to the output shaft of the second timer, a microswitch, turned on and off in a pseudo-random timed operation by the rotation of said cam wheel, and a stepping-switch activated by a pulse of DC electric power caused by the turning on of said microswitch, said stepping-switch causing the distribution of AC electric power through said first 24 hour timer to a number of non-consecutively wired outlets.
References Cited (Backward Citations)
US3491249A
Cited
US3750132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |