US3293769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable cool-down control for dryer cycle
Assignee: Whirlpool Corp
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Filing: 1964-06-18
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Granted: 1966-12-27
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Dale W Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:14
CPC Classifications
D; D06; D06F; D06F34/00; D06F34/28; D06F34/30; D06F2101/00; D06F2101/14; D06F2105/00; D06F2105/16; D06F2105/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
IN A CONTROL FOR A CLOTHES DRYER HAVING A DRYING CHAMBER, MOTOR-DRIVEN MEANS FOR TUMBLING CLOTHES IN THE DRYING CHAMBER AND FOR TRANSLATING AIR THEREOVER AND A HEATER FOR HEATING THE AIR, THE COMBINATION OF A ROTATABLE SEQUENCE TIMER MANUALLY MOVABLE FROM AN INACTIVE POSITION TO SELECTIVE ACTIVE POSITIONS AND CONTROLLING OPERATION OF THE HEATER AND THE MOTOR DRIVEN MEANS, A MULTIPLE PARTS CAM ROTATABLE WITH SAID TIMER, AND SAID MULTIPLE PARTS TOGETHER WITH ONE ANOTHER FORMING A SINGLE CAM PROFILE HAVING A PERIPHERAL CAM HIGH PORTION, A PERIPHERAL RAISED PORTION, AND A PERIPHERAL CAM LOW PORTION, AND MULTIPLE SWITCH MEANS ACTUATINGLY OPERATED BY SAID CAM PROFILE AND ENGAGING A CORRESPONDING MULTIPLE OF CAM FOLLOWERS DISPOSED IN OPERATIVE REGISTER WITH HIGH PORTION, SAID RAISED PORTION, AND SAID LOW PORTION TO OPERATE THE DRYER AUTOMATICALLY UNDER THE CONTROL OF SAID ROTATABLE SEQUENCE TIMER THROUGH A DRYING CYCLE INCLUDING (1) A HEAT-ON PERIOD, AND (2) A COOL-DOWN PERIOD AND AN (3) OFF POSITION, SAID HEAT-ON PERIOD AND SAID COOL-DOWN PERIOD CORRESPONDING TO SAID HIGH AND RAISED PORTIONS ON SAID CAM PROFILE, AND ADJUSTMENT MEANS TO SELECTIVELY MODIFY THE HEATON PERIOD AND THE COOL-DOWN PERIOD BY SELECTIVELY ADJUSTING SAID MULITPLE PARTS OF SAID CAM TO MODIFY THE PROFILE OF THE CAM BY CHANGING THE EFFECTIVE CIRCUMFERENTIAL LENTH OF SAID COM HIGH PORTION AND SAID CAM RAISED PORTION.
Claim 2
Dependent Claim
224 words
IN A CONTROL FOR A CLOTHES DRYER HAVING A DRYING CHAMBER, MOTOR-DRIVEN MEANS FOR TUMBLING CLOTHES IN THE DRYING CHAMBER AND FOR TRANSLATING AIR THEREOVER AND A HEATER FOR HEATING THE AIR, THE COMBINATION OF A ROTATABLE SEQUENCE TIMER MANUALLY MOVABLE FROM AN INACTIVE POSITION TO SELECTIVE ACTIVE POSITIONS AND CONTROLLING OPERATION OF THE HEATER AND THE MOTOR DRIVEN MEANS, A MULTIPLE PARTS CAM ROTATABLE WITH SAID TIMER, AND SAID MULTIPLE PARTS TOGETHER WITH ONE ANOTHER FORMING A SINGLE CAM PROFILE HAVING A PERIPHERAL CAM HIGH PORTION, A PERIPHERAL RAISED PORTION, AND A PERIPHERAL CAM LOW PORTION, AND MULTIPLE SWITCH MEANS ACTUATINGLY OPERATED BY SAID CAM PROFILE AND ENGAGING A CORRESPONDING MULTIPLE OF CAM FOLLOWERS DISPOSED IN OPERATIVE REGISTER WITH HIGH PORTION, SAID RAISED PORTION, AND SAID LOW PORTION TO OPERATE THE DRYER AUTOMATICALLY UNDER THE CONTROL OF SAID ROTATABLE SEQUENCE TIMER THROUGH A DRYING CYCLE INCLUDING (1) A HEAT-ON PERIOD, AND (2) A COOL-DOWN PERIOD AND AN (3) OFF POSITION, SAID HEAT-ON PERIOD AND SAID COOL-DOWN PERIOD CORRESPONDING TO SAID HIGH AND RAISED PORTIONS ON SAID CAM PROFILE, AND ADJUSTMENT MEANS TO SELECTIVELY MODIFY THE HEATON PERIOD AND THE COOL-DOWN PERIOD BY SELECTIVELY ADJUSTING SAID MULITPLE PARTS OF SAID CAM TO MODIFY THE PROFILE OF THE CAM BY CHANGING THE EFFECTIVE CIRCUMFERENTIAL LENTH OF SAID COM HIGH PORTION AND SAID CAM RAISED PORTION.
References Cited (Backward Citations)
US2100284A
Cited
US2825146A
Cited
US2855477A
Cited
US3126759A
Cited
US3188503A
Cited
US3223395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |