US3884035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chronograph watch
Assignee: SUISSE POUR 1 IND HORLOGERE MA
•
Filing: 1973-10-15
•
Granted: 1975-05-20
•
Expires: 1993-10-15
Abstract
Abstract The present invention relates to a chronograph watch having as a time-base a piezoelectric quartz oscillator, the oscillations of which are maintained electronically and utilized, after having been treated by electronic dividing and shaping circuits, for the maintenance of a known electric display device for the seconds, minutes, and hours. This watch further comprises an auxiliary chronographic counting device which can be actuated from outside at the will of the user and which operates synchronously with the said oscillator.
Inventors
- 👤 Pierre Maurice Jeannet
- 👤 Michel Girardin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:24
CPC Classifications
G; G04; G04F; G04F8/00; G04F8/08; G04C; G04C3/00; G04C3/14; G04C3/146
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
A chronograph watch, comprising: a quartz oscillator; a first electronic circuit coupled to said oscillator for dividing and shaping output pulses generated by said oscillator; display means connected to a first output of said first electronic circuit for displaying a time signal; a second electronic circuit comprising a frequency divider and an output pulse shaper; switch means connected between an input of said second electronic circuit and a second, independent output of said first electronic circuit; a stepping motor connected to an output of said second electronic circuit and driven at a predetermined frequency by pulses produced by said second electronic circuit; a gear train comprising a motor pinion driven by said motor and counter wheels comprising at least a second counter wheel and a minute counter wheel; cam means mounted on said counter wheels; and hammer means mounted adjacent said cam means for resetting said counter wheels to zero upon engagement of said cam means by said hammer means; the frequency produced at said second output being at least eight times greater than the frequency produced at said output of said second electronic circuit for driving said stepping motor.
Claim 2
Dependent Claim
190 words
A chronograph watch, comprising: a quartz oscillator; a first electronic circuit coupled to said oscillator for dividing and shaping output pulses generated by said oscillator; display means connected to a first output of said first electronic circuit for displaying a time signal; a second electronic circuit comprising a frequency divider and an output pulse shaper; switch means connected between an input of said second electronic circuit and a second, independent output of said first electronic circuit; a stepping motor connected to an output of said second electronic circuit and driven at a predetermined frequency by pulses produced by said second electronic circuit; a gear train comprising a motor pinion driven by said motor and counter wheels comprising at least a second counter wheel and a minute counter wheel; cam means mounted on said counter wheels; and hammer means mounted adjacent said cam means for resetting said counter wheels to zero upon engagement of said cam means by said hammer means; the frequency produced at said second output being at least eight times greater than the frequency produced at said output of said second electronic circuit for driving said stepping motor.
Claim 3
Dependent Claim
21 words
A chronograph watch according to claim 1, further comprising a diode connected between said second electronic circuit and said stepping motor.
Claim 4
Dependent Claim
56 words
A chronograph watch according to claim 1, further comprising: a first power source connected to said first electronic circuit for energizing said first circuit, said oscillator and said display device; and a second power source connected to said second electronic circuit for energizing said second circuit and said stepping motor when said switch means is closed.
Claim 5
Dependent Claim
36 words
A chronograph watch according to claim 1, wherein said display means is energized with pulses at a predetermined frequency and said stepping motor is energized at a frequency which is a multiple of said predetermined frequency.
Claim 6
Dependent Claim
185 words
A chronograph watch, comprising: a quartz oscillator; a first electronic circuit coupled to said oscillator for dividing and shaping output pulses generated by said oscillator; display means connected to a first output of said first electronic circuit for displaying a time signal; a second electronic circuit comprising a frequency divider and an output pulse shaper; switch means connected between an input of said second electronic circuit and a second independent output of said first electronic circuit, said second electronic circuit having a plurality of outputs producing different frequencies; a plurality of stepping motors each connected to one of said outputs of said second electronic circuit and rotating at a different rotating frequency from each other stepping motor; and a plurality of independent gear trains comprising a second counter wheel, a minute counter wheel and an hour counter wheel, each of said gear trains being driven by one of said stepping motors; the frequency produced at said second output of said first circuit being at least eight times greater than the highest frequency produced at one of said second circuit outputs for driving said stepping motors.
Claim 7
Dependent Claim
185 words
A chronograph watch, comprising: a quartz oscillator; a first electronic circuit coupled to said oscillator for dividing and shaping output pulses generated by said oscillator; display means connected to a first output of said first electronic circuit for displaying a time signal; a second electronic circuit comprising a frequency divider and an output pulse shaper; switch means connected between an input of said second electronic circuit and a second independent output of said first electronic circuit, said second electronic circuit having a plurality of outputs producing different frequencies; a plurality of stepping motors each connected to one of said outputs of said second electronic circuit and rotating at a different rotating frequency from each other stepping motor; and a plurality of independent gear trains comprising a second counter wheel, a minute counter wheel and an hour counter wheel, each of said gear trains being driven by one of said stepping motors; the frequency produced at said second output of said first circuit being at least eight times greater than the highest frequency produced at one of said second circuit outputs for driving said stepping motors.
Claim 8
Dependent Claim
41 words
A chronograph watch according to claim 5, wherein the fastest stepping motor has a rotating frequency higher than 1 Hz and the gear train driven by said fastest stepping motor comprises a counter wheel for counting a fraction of a second.
Claim 9
Dependent Claim
47 words
A chronograph watch according to claim 5, wherein each of said counter wheels has a cam coaxial therewith, and said chronograph further comprises a plurality of hammers located adjacent said cams for resetting to zero at least one counter wheel in one of said independent gear trains.
Claim 10
Dependent Claim
30 words
A chronograpph watch according to claim 5, further comprising a plurality of diodes, each connected between one of said outputs of said second electronic circuits and the corresponding stepping motor.
Claim 11
Dependent Claim
54 words
A chronograph watch according to claim 5, further comprising a first power source connected to said first electronic circuit for energizing said circuit, said oscillator and said display device; and a second power source connected to said second electronic circuit for energizing said circuit and said stepping motors when said switch means is closed.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |