US3713285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical time relay
Assignee: SCHLEICHER GmbH AND Co
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Filing: 1970-10-27
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Granted: 1973-01-30
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Expires: 1990-10-27
Abstract
Abstract An electromechanical time delay device driven by a synchronous motor via a reduction gear system, in which a series of decadic time ranges can be preselected. A time delay required is selected with the chosen decadic range by means of an adjustor Knob associated with a time scale. Within each decadic range, the lower end of the scale can be expanded by the use of further reduction gears so that the effect of the inherent time error of the relay is minimized.
Inventors
- 👤 W Haufe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:37
CPC Classifications
G; G04; G04F; G04F3/00; G04F3/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
An electromechanical time delay device comprising a synchronous motor, a reduction gear system, a multi-wheel arrangement, a time elapse wheel adapted to be selectively driven by the synchronous motor via the reduction gear system and multiwheel arrangement, a time indicating scale and an adjuster knob associated therewith, the adjuster knob being connected with the time elapse wheel and operable to select a time delay period of actuation, a plurality of decadic ranges within each of which the time delay period being continuously selectable, a second knob operatively associated with said multi-wheel arrangement for selecting a required one of said decadic ranges, each decadic range corresponding to a specific reduction ratio of the reduction gear system, and said multi-wheel arrangement with which each decadic range is associated useful for effecting expansion of the lower part of the selected decadic range.
Claim 2
Dependent Claim
139 words
An electromechanical time delay device comprising a synchronous motor, a reduction gear system, a multi-wheel arrangement, a time elapse wheel adapted to be selectively driven by the synchronous motor via the reduction gear system and multiwheel arrangement, a time indicating scale and an adjuster knob associated therewith, the adjuster knob being connected with the time elapse wheel and operable to select a time delay period of actuation, a plurality of decadic ranges within each of which the time delay period being continuously selectable, a second knob operatively associated with said multi-wheel arrangement for selecting a required one of said decadic ranges, each decadic range corresponding to a specific reduction ratio of the reduction gear system, and said multi-wheel arrangement with which each decadic range is associated useful for effecting expansion of the lower part of the selected decadic range.
Claim 3
Dependent Claim
139 words
An electromechanical time delay device comprising a synchronous motor, a reduction gear system, a multi-wheel arrangement, a time elapse wheel adapted to be selectively driven by the synchronous motor via the reduction gear system and multi-wheel arrangement, a time indicating scale and an adjuster knob associated therewith, the adjuster knob being connected with the time elapse wheel and operable to select a time delay period of actuation, a plurality of decadic ranges within each of which the time delay period being continuously selectable, a second knob operatively associated with said multi-wheel arrangement for selecting a required one of said decadic ranges, each decadic range corresponding to a specific reduction ratio of the reduction gear system, and said multi-wheel arrangement with which each decadic range is associated useful for effecting expansion of the lower part of the selected decadic range.
Claim 4
Dependent Claim
139 words
An electromechanical time delay device comprising a synchronous motor, a reduction gear system, a multi-wheel arrangement, a time elapse wheel adapted to be selectively driven by the synchronous motor via the reduction gear system and multi-wheel arrangement, a time indicating scale and an adjuster knob associated therewith, the adjuster knob being connected with the time elapse wheel and operable to select a time delay period of actuation, a plurality of decadic ranges within each of which the time delay period being continuously selectable, a second knob operatively associated with said multi-wheel arrangement for selecting a required one of said decadic ranges, each decadic range corresponding to a specific reduction ratio of the reduction gear system, and said multi-wheel arrangement with which each decadic range is associated useful for effecting expansion of the lower part of the selected decadic range.
Claim 5
Dependent Claim
46 words
A time relay accorDing to claim 1, wherein the expansion of the lower ranges is identical within each decadic time stage, and the indicating scale for the continuous preselection of the time delay is associated with only a single indicating scale which corresponds to constant spreading.
Claim 6
Dependent Claim
31 words
A time relay according to claim 1, wherein the indicating scales on the second selector knob are of multi-colored design, and are associated with the colors, corresponding the individual time ranges.
Claim 7
Dependent Claim
34 words
A time relay according to claim 1 wherein there are provided three decadic time ranges of one second, 10 seconds and 100 seconds, which are associated with time ranges of 3 and 30 seconds.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |