Patent US4974557A successfully refreshed from Google Patents.
Patent US3122358A successfully refreshed from Google Patents.
US3122358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timer heat reduction drier control
Assignee: Whirlpool Corp
•
Filing: 1960-07-26
•
Granted: 1964-02-25
•
Expires: 1980-07-26
Abstract
No abstract record available.
Inventors
- 👤 Clifton A Cobb
- 👤 James T Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:12
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27541; D; D06; D06F; D06F34/00; D06F34/08; D06F2103/00; D06F2103/02; D06F2103/08; D06F2103/28; D06F2103/32; D06F2105/00; D06F2105/28; D06F2105/46; D06F2105/62; D06F58/00; D06F58/32; D06F58/34; D06F58/36; D06F58/38; D06F58/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
IN A DRYER, AUTOMATICALLY OPERABLE THROUGH A DRYING CYCLE, MEANS FOR DRIVING A STREAM OF AIR FOR DRYING MATERIALS PLACED IN A TREATMENT ZONE, PLURAL HEATING MEANS FOR ADDING THERMAL ENERGY TO SAID STREAM OF AIR TO ENHANCE THE DRYING CHARACTERISTICS THEREOF, AND CONTROL MEANS INCLUDING A TIMER MOTOR, CIRCUIT MEANS FOR CONTROLLING SAID PLURAL HEATING MEANS INCLUDING SWITCH MEANS OPERATED BY SAID TIMER MOTOR, AND A SENSOR THERMOSTAT CONTROLLING THE OPERATION OF SAID TIMER MOTOR, SAID SENSOR THERMOSTAT OPERABLE TO RESPOND TO AN UPPER TEMPERATURE AS A FIRST STEP OF THE DRYING CYCLE TO ENERGIZE SAID TIMER MOTOR, WHEREUPON SAID TIMER MOTOR WILL CONTINUE THE DRYING CYCLE FOR A TIME INTERVAL AT MAXIMUM HEAT INPUT, SAID TIMER MOTOR OPERABLE AFTER SAID TIMED INTERVAL TO ACTUATE SAID SWITCH MEANS AND DEACTIVATING AT LEAST ONE OF SAID PLURAL HEATERS, THEREBY STEPPING DOWN THE HEAT INPUT, SAID SENSOR THERMOSTAT OPERABLE TO RESPOND AT A LOWER TEMPERATURE AS A SECOND STEP OF THE DRYING CYCLE TO DISABLE SAID TIMER MOTOR, WHEREUPON THE DRYING CYCLE WILL BE CONDITIONED FOR A FURTHER STEP DOWN CONTROL BY SAID SENSOR THERMOSTAT AND SAID TIMER MOTOR.
Claim 2
Dependent Claim
188 words
IN A DRYER, AUTOMATICALLY OPERABLE THROUGH A DRYING CYCLE, MEANS FOR DRIVING A STREAM OF AIR FOR DRYING MATERIALS PLACED IN A TREATMENT ZONE, PLURAL HEATING MEANS FOR ADDING THERMAL ENERGY TO SAID STREAM OF AIR TO ENHANCE THE DRYING CHARACTERISTICS THEREOF, AND CONTROL MEANS INCLUDING A TIMER MOTOR, CIRCUIT MEANS FOR CONTROLLING SAID PLURAL HEATING MEANS INCLUDING SWITCH MEANS OPERATED BY SAID TIMER MOTOR, AND A SENSOR THERMOSTAT CONTROLLING THE OPERATION OF SAID TIMER MOTOR, SAID SENSOR THERMOSTAT OPERABLE TO RESPOND TO AN UPPER TEMPERATURE AS A FIRST STEP OF THE DRYING CYCLE TO ENERGIZE SAID TIMER MOTOR, WHEREUPON SAID TIMER MOTOR WILL CONTINUE THE DRYING CYCLE FOR A TIME INTERVAL AT MAXIMUM HEAT INPUT, SAID TIMER MOTOR OPERABLE AFTER SAID TIMED INTERVAL TO ACTUATE SAID SWITCH MEANS AND DEACTIVATING AT LEAST ONE OF SAID PLURAL HEATERS, THEREBY STEPPING DOWN THE HEAT INPUT, SAID SENSOR THERMOSTAT OPERABLE TO RESPOND AT A LOWER TEMPERATURE AS A SECOND STEP OF THE DRYING CYCLE TO DISABLE SAID TIMER MOTOR, WHEREUPON THE DRYING CYCLE WILL BE CONDITIONED FOR A FURTHER STEP DOWN CONTROL BY SAID SENSOR THERMOSTAT AND SAID TIMER MOTOR.
References Cited (Backward Citations)
US2826825A
Cited
US2621423A
Cited
US2846776A
Cited
US2796679A
Cited
US2928267A
Cited
US2819540A
Cited
US2941308A
Cited
US3028680A
Cited
US3021605A
Cited
US2882610A
Cited
US3009256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |