US4763311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double clock for daylight saving
Assignee: Individual
•
Filing: 1987-11-02
•
Granted: 1988-08-09
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Expires: 2007-11-02
Abstract
Abstract The application discloses two time clocks interconnected by a transmission, one clock is driven by a 60 cycle synchronous motor for standard time which drives the second clock at fast time for six months then slow time for six months.
Inventors
- 👤 Daniel Marvosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:12
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/06; G04B19/08; G04B19/087; G04B19/22; G04B19/23
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
109 words
A double clock for daylight saving, comprising: (a) a first clock having a clock movement; (b) a drive means for driving said clock movement of said first clock; (c) a second clock having a drive movement; `(d) transmission means operatively interconnecting said drive means and said clock movement of said second clock, said transmission means comprising: (i) a first means for driving said clock movement of said second clock at a first rate of speed; (ii) a second means for driving said clock movement of second clock at a second rate of speed; and (iii) selector means for selectively interconnecting said first and second means with said drive means.
Claim 2
Dependent Claim
109 words
A double clock for daylight saving, comprising: (a) a first clock having a clock movement; (b) a drive means for driving said clock movement of said first clock; (c) a second clock having a drive movement; `(d) transmission means operatively interconnecting said drive means and said clock movement of said second clock, said transmission means comprising: (i) a first means for driving said clock movement of said second clock at a first rate of speed; (ii) a second means for driving said clock movement of second clock at a second rate of speed; and (iii) selector means for selectively interconnecting said first and second means with said drive means.
Claim 3
Dependent Claim
18 words
A double clock as defined in claim 1 in which said drive means comprises a synchronous electric motor.
Claim 4
Dependent Claim
70 words
A double clock as defined in claim 2 in which said first means of said transmission means drives said clock movement of said second clock at said first rate of speed for a period of one-half a year and in which said second means of said transmission means drives said clock movement of said second clock at a second slower rate of speed for a period of one-half a year.
Claim 5
Dependent Claim
48 words
A double clock as defined in claim 3 in which said transmission means comprises: (a) a first gear operatively connected to said drive means and (b) a shifting gear operatively connected to said first gear said shifting gear being adapted to selectively drive said first and second means.
Claim 6
Dependent Claim
38 words
A double clock as defined in claim 4 in which said first means comprises a third gear and said second means comprises a fourth gear, said third gear and fourth gear being selectively drivable by said shifting gear.
Claim 7
Dependent Claim
39 words
A double clock as defined in claim 5 in which said transmission means further includes lever means operatively connected to said shifting gear for moving said shifting gear into driving engagement with one of said third and fourth gears.
References Cited (Backward Citations)
US2243343A
Cited
US4720820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |