US3704351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timer with sandwiched internal escapement mechanism disposed between two programming means
Assignee: Duracell Inc USA
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Filing: 1971-05-28
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Granted: 1972-11-28
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Expires: 1991-05-28
Abstract
Abstract A timer has first and second cam programming means rotatably driven about a common axis at different speeds with one of the cam programming means being driven in response to the rotation of the other cam programming means, the two cam programming means being coupled together by an escapement means sandwiched between the two cam programming means.
Inventors
- 👤 Wallace L Linn
- 👤 Elmo W Voland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:23
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/10; H01H43/12; H01H43/121; H01H43/101; H01H43/102; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2106
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
157 words
A timer comprising: a. mounting means, b. drive means carried by said mounting means, c. shaft means carried bY said mounting means, said shaft means including first and second segments, said first segment fixedly carried by said mounting means, said second segment rotatably journalled in said mounting means, and journal means coupling said segments together, d. a first cam programming means carried by said first segment, a second cam programming means carried by said second segment, said first and second cam programming means including hub means each of said hub means having recessed portions facing each other, one of said recessed portions being cup-shaped and surrounding said shaft means, both of said recessed portions adapted to receive at least a portion of an escapement means sandwiched between said first and second cam programming means, said escapement means causing intermittent rotation of said second cam programming means in response to the rotation of said first cam programming means.
Claim 2
Dependent Claim
157 words
A timer comprising: a. mounting means, b. drive means carried by said mounting means, c. shaft means carried bY said mounting means, said shaft means including first and second segments, said first segment fixedly carried by said mounting means, said second segment rotatably journalled in said mounting means, and journal means coupling said segments together, d. a first cam programming means carried by said first segment, a second cam programming means carried by said second segment, said first and second cam programming means including hub means each of said hub means having recessed portions facing each other, one of said recessed portions being cup-shaped and surrounding said shaft means, both of said recessed portions adapted to receive at least a portion of an escapement means sandwiched between said first and second cam programming means, said escapement means causing intermittent rotation of said second cam programming means in response to the rotation of said first cam programming means.
Claim 3
Dependent Claim
126 words
In a timer wherein first and second cam programming means are rotatably driven about a shaft means and wherein one of said cam programming means is intermittently driven in response to the rotation of the other of said cam programming means, a spring operated escapement means including a pivotally mounted actuator plate pivoting between said first and second cam programming means and being limited in its travel by a spring disposed between said first and second cam programming means, an end of said spring connected to a free end of said actuator plate, the other end connected to said shaft means, rotation of one of said cam programming means driving said spring operated escapement means to cause said intermittent driving of the other cam programming means.
Claim 4
Dependent Claim
126 words
In a timer wherein first and second cam programming means are rotatably driven about a shaft means and wherein one of said cam programming means is intermittently driven in response to the rotation of the other of said cam programming means, a spring operated escapement means including a pivotally mounted actuator plate pivoting between said first and second cam programming means and being limited in its travel by a spring disposed between said first and second cam programming means, an end of said spring connected to a free end of said actuator plate, the other end connected to said shaft means, rotation of one of said cam programming means driving said spring operated escapement means to cause said intermittent driving of the other cam programming means.
Claim 5
Dependent Claim
23 words
In a timer according to claim 2 wherein said spring is connected to an end of a bar connected to said shaft means.
Claim 6
Dependent Claim
65 words
In a timer according to claim 3, said spring escapement further including a roller extending from said actuator plate and engaging a cam means coupled to one of said cam programming means so as to selectively pivot said actuator plate, and pawl means coupled to said actuator plate, said pawl means adapted to engage ratchet means coupled to the other of said cam programming means.
Claim 7
Dependent Claim
35 words
In a timer according to claim 4, wherein said pawl means is spring biased and said actuator plate contains an aperture receiving said pawl means, said pawl means slidably engaging the sides of said aperture.
Claim 8
Dependent Claim
44 words
In a timer according to claim 2 wherein each of said first and second cam programming means includes a hub means, each of said hub means having a recessed portion facing each other and adapted to receive portions of said spring operated escapement means.
Claim 9
Dependent Claim
19 words
In a timer according to claim 6 wherein one of said recessed portions is cup-shaped and receives said spring.
Claim 10
Dependent Claim
32 words
In a timer according to claim 7 wherein said spring operated escapement further includes a pawl coupled to said actuator plate, said pawl engaging ratchet teeth provided in said cup-shaped recess portion.
Claim 11
Dependent Claim
25 words
In a timer according to claim 2, wherein said first and second cam programming means are carried by said shaft means through separate bearing surfaces.
Claim 12
Dependent Claim
43 words
In a timer according to claim 9, wherein said shaft means includes two segments, one of said first and second cam programming means carried by one of said segments, the other of said cam programming means carried by the other of said segments.
Claim 13
Dependent Claim
19 words
In a timer according to claim 10, wherein said shaft means further includes journal means coupling said segments together.
Claim 14
Dependent Claim
62 words
In a timer according to claim 2, wherein said escapement means further includes cam means coupled to one of said first and second cam programming means, said actuator plate responsive to said cam means, and pawl means coupled to said actuator means, said pawl means adapted to engage ratchet means coupled to the other of said first and second cam programming means.
Claim 15
Dependent Claim
14 words
In a timer according to claim 2, wherein said spring is a coil spring.
Claim 16
Dependent Claim
16 words
In a timer according to claim 13, wherein said coil spring iS a constant force spring.
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |