Patent US3631451A successfully refreshed from Google Patents.
US3631451A
Expired / Lapsed
US
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Apparatus for the contactless release of signals in clocks
Assignee: GEHAP GES fur HANDEL und PATEN
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Filing: 1969-12-12
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Granted: 1971-12-28
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Expires: 1989-12-12
Abstract
Abstract An apparatus for the contactless release of signals in alarm clocks, signal clocks, timers for electrical appliances, startstop time switches, short-time bells, or the like, comprising in the area of a release mechanism which is actuated by the clockwork at least one magnetic-field-dependent resistor connected to an electronic control circuit, and a magnetic field that changes by reason of the release mechanism being caused to act on this resistor when the signal is released in the desired manner.
Inventors
- 👤 Karl Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:53
CPC Classifications
G; G04; G04C; G04C21/00; G04C21/16; H; H03; H03K; H03K17/00; H03K17/51; H03K17/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
114 words
An apparatus for the contactless release of signals in signal devices such as alarm clocks, signal clocks, timers for electrical appliances, Start-stop time switches and short-time bells comprising: automatically operated time related moving means; a release mechanism having a magnetic field and carrier means carrying said magnetic field, said magnetic field fixedly located in relation to said carrier means; said moving means connected to move said carrier means; at least one magnetic-field-dependent and magnetic-fieldsensitive resistor; an electronic control and switching circuit connected to said resistor; said resistor mounted in magnetic field effective proximity, the said circuit becoming switch-and-control functional and operational when said magnet field is in a magnetic effective proximity of said resistor.
Claim 2
Independent Claim
114 words
An apparatus for the contactless release of signals in signal devices such as alarm clocks, signal clocks, timers for electrical appliances, Start-stop time switches and short-time bells comprising: automatically operated time related moving means; a release mechanism having a magnetic field and carrier means carrying said magnetic field, said magnetic field fixedly located in relation to said carrier means; said moving means connected to move said carrier means; at least one magnetic-field-dependent and magnetic-fieldsensitive resistor; an electronic control and switching circuit connected to said resistor; said resistor mounted in magnetic field effective proximity, the said circuit becoming switch-and-control functional and operational when said magnet field is in a magnetic effective proximity of said resistor.
Claim 3
Dependent Claim
64 words
An apparatus for the contactless release of signals in signal devices as claimed in claim 1, said magnetic field being a permanent magnet, said carrier being a releasing lever, said moving means connected to said carrier means to carry said magnet into a magnetic-field-effective position at a point adjacent to the said magnetic-field-dependent resistor after the actuation of said lever by said moving means.
Claim 4
Dependent Claim
58 words
An apparatus for the contactless release of signals in signal devices as claimed in claim 2, said permanent magnet being fixedly mounted opposite said magnetic-field-dependent resistor at a magnetic field effective distance therefrom, and a magnetic shield mounted movingly and shieldingly on the said release mechanism inserted between said resistor means and said magnet by said moving means.
Claim 5
Dependent Claim
61 words
An apparatus for the contactless release of signals in signal devices as claimed in claim 1, said at least one magnetic-field-sensitive resistor being at least two magnetic-field-dependent resistors, means to space said at least two magnetic-field-dependent resistors adjustably relative to each other, and with respect to the said release mechanism to control several steps either for successive or simultaneous switching operations.
Claim 6
Dependent Claim
31 words
An apparatus for the contactless release of signals in signal devices as claimed in claim 1, said at least one magnetic-field-dependent resistor having a width corresponding to a predetermined switching duration.
Claim 7
Dependent Claim
75 words
An apparatus for the contactless release of signals in signal devices such as alarm clocks, signal clocks, timers for electrical appliances, start-stop time switches and short-time bells as claimed in claim 1, comprising: a transistor with a collector connected with the said release mechanism, said at least one magnetic-field-dependent resistor being connected in a current circuit with an ohmic resistance, different from that of the remainder of the circuit, to the base of said transistor.
Claim 8
Dependent Claim
51 words
An apparatus for the contactless release of signals in signal devices as claimed in claim 6, the said collector being connected to a circuit maker, such as a buzzer, a radio receiver, another switching device, a relay or a contactor, for the purpose such as of turning on an electrical appliance.
Claim 9
Dependent Claim
23 words
An apparatus for the contactless release of signals in signal devices as claimed in claim 1, said moving means being a clock mechanism.
Claim 10
Dependent Claim
23 words
An apparatus for the contactless release of signals in signal devices as claimed in claim 3, said magnetic shield being a ferromagnetic plate.
Claim 11
Dependent Claim
40 words
An apparatus for the contactless release of signals in signal devices as claimed in claim 1, said at least one magnetic-field-dependent resistor being mounted in magnetic-field-effective proximity of the path of said magnet field, adjustably for at least two positions.
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |