US3590573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for synchronising timing devices
Assignee: Leon Hatot SA France
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Filing: 1969-02-17
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Granted: 1971-07-06
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Expires: 1989-02-17
Abstract
Abstract Pulse signals from a radio receiver are applied to a synchronizing winding to synchronize the pendulum, balance wheel or other mechanical oscillator of a timing device, and a transistor-switching device controlled by a pickup operated by the said mechanical oscillator is electrically connected to prevent the energization of the synchronizing winding except when the mechanical oscillator is within a predetermined limited range of positions, so as to eliminate parasitic noise signals received during the remaining time.
Inventors
- 👤 Jacques Dietsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:35
CPC Classifications
G; G04; G04C; G04C11/00; G04C11/08; G04C11/081; G04C11/02; G04C11/026; G04R; G04R40/00; G04R40/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
154 words
A system for synchronizing a timing device having a mechanical oscillator including an oscillating member, said system including a radio receiver for receiving a periodic radiosynchronizing signal comprising synchronizing pulses corresponding to a fraction of the repetition period of said signal, and at least one synchronizing winding acting on the oscillator to synchronize it and connected to the output of the receiver so as to be energized by an electrical-synchronizing signal initiated by the radio-synchronizing signal, in which a switching device controlled by the oscillator is electrically connected in the circuit of said radio receiver to prevent the energization of the synchronizing winding by said radio receiver except for a fraction of the repetition period of said signal when the said oscillating member is within a predetermined limited range of positions in which the synchronizing pulses will be effective whereby the adverse effect of any parasitic signal received between said pulses is completely eliminated.
Claim 2
Independent Claim
154 words
A system for synchronizing a timing device having a mechanical oscillator including an oscillating member, said system including a radio receiver for receiving a periodic radiosynchronizing signal comprising synchronizing pulses corresponding to a fraction of the repetition period of said signal, and at least one synchronizing winding acting on the oscillator to synchronize it and connected to the output of the receiver so as to be energized by an electrical-synchronizing signal initiated by the radio-synchronizing signal, in which a switching device controlled by the oscillator is electrically connected in the circuit of said radio receiver to prevent the energization of the synchronizing winding by said radio receiver except for a fraction of the repetition period of said signal when the said oscillating member is within a predetermined limited range of positions in which the synchronizing pulses will be effective whereby the adverse effect of any parasitic signal received between said pulses is completely eliminated.
Claim 3
Dependent Claim
16 words
A system as claimed in claim 1 in which the switching device is of semiconductor type.
Claim 4
Dependent Claim
21 words
A system as claimed in claim 1 in which the switching device is connected in the circuit of the synchronizing winding.
Claim 5
Dependent Claim
25 words
A system as claimed in claim 1 in which the switching device is connected in a stage of the receiver between its input and output.
Claim 6
Dependent Claim
23 words
A system as claimed in claim 1 in which the switching device is connected in series with the power supply to the receiver.
Claim 7
Dependent Claim
19 words
A system as claimed in claim 1 in which the switching device is controlled by an electromagnetic induction pickup.
Claim 8
Dependent Claim
23 words
A system as claimed in claim 1 in which the switching device is controlled by a contact directly actuated by the mechanical oscillator.
Claim 9
Dependent Claim
15 words
A system as claimed in claim 1 in which the oscillator comprises a vibrating-balance member.
Claim 10
Dependent Claim
15 words
A system as claimed in claim 8 in which the oscillator comprises self-sustaining vibrating-balance member.
Claim 11
Dependent Claim
45 words
A system as claimed in claim 9 in which the vibrating-balance member is provided with an electromagnetic sustaining system including a driving coil and a pickup controlling pulses of energization to the driving coil, in which the synchronizing signal is applied to the self-sustAining system.
Claim 12
Dependent Claim
18 words
A system as claimed in claim 10 in which the synchronizing signal is applied to the driving coil.
Claim 13
Dependent Claim
17 words
A system as claimed in claim 10 in which the synchronizing signal is applied to the pickup.
Claim 14
Dependent Claim
59 words
A system as claimed in claim 1 in which the synchronizing signal is passed through an antiparasitic-filtering circuit, including a capacitor in parallel with a resistor and in series with a further resistor connected between the input and output of the filtering circuit and a capacitor in parallel with a resistor connected across the input of the filtering circuit.
Claim 15
Dependent Claim
50 words
A system as claimed in claim 13 in which the output of the filtering circuit is connected between the base and emitter of a transistor which are also shunted by a resistor, whilst the emitter/collector path of the transistor is connected in series with the synchronizing winding to a supply.
Claim 16
Dependent Claim
47 words
A system as claimed in claim 16 which is adapted to respond to a radio-synchronizing signal comprising pulses emitted at a carrier frequency of several tens of kHz. by suppressing the carrier wave for a fraction of a second at a pulse repetition frequency of 1 second.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |