US3286361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clothes dryer and control therefor
Assignee: Whirlpool Corp
•
Filing: 1963-11-12
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Granted: 1966-11-22
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Clifton A Cobb
- 👤 William F Gourdeau
- 👤 James T Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:31
CPC Classifications
D; D06; D06F; D06F34/00; D06F34/14; D06F34/26; D06F58/00; D06F58/32; D06F58/34; D06F58/46; D06F2103/00; D06F2103/28; D06F2103/32; D06F2105/00; D06F2105/16; D06F2105/24; D06F2105/28; D06F2105/46; D06F2105/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
THE METHOD OF DRYING WHICH INCLUDES THE STEPS OF (A) DRIVING A BLOWER AT A FIRST SPEED TO DRIVE A STREAM OF AIR THROUGH A TREATMENT ZONE AT A CORRESPONDING VOLUMETRIC FLOW RATE FOR EFFECTING A DRYING ACTION ON MATERIALS TO BE DRIED, (B) SIMULTANEOUSLY ADDING THERMAL ENERGY TO THE AIR STREAM AHEAD OF THE TREATMENT ZONE TO ENHANCE THE DRYING CHARACTERISTICS OF THE AIR STREAM, (C) CONTINUING STEPS (A) AND (B) UNTIL THE TEMPERATURE OF THE AIR STREAM LEAVING THE TREATMENT ZONE ATTAINS A PREDETERMINED LEVEL, (D) THEREAFTER DRIVING THE BLOWER AT A DECREASED SECOND SPEED TO DRIVE THE AIR STREAM THROUGH THE TREATMENT ZONE AT A CORRESPONDINGLY DECREASED VOLUMETRIC FLOW RATE, (E) SUBSEQUENT TO STEP (D) STOPPING THE ADDITION OF THERMAL ENERGY TO THE AIR STREAM, (F) AND CONTINUING STEPS (D) AND (E) FOR A PRE-TIMED COOL-DOWN PERIOD.
Claim 2
Independent Claim
140 words
THE METHOD OF DRYING WHICH INCLUDES THE STEPS OF (A) DRIVING A BLOWER AT A FIRST SPEED TO DRIVE A STREAM OF AIR THROUGH A TREATMENT ZONE AT A CORRESPONDING VOLUMETRIC FLOW RATE FOR EFFECTING A DRYING ACTION ON MATERIALS TO BE DRIED, (B) SIMULTANEOUSLY ADDING THERMAL ENERGY TO THE AIR STREAM AHEAD OF THE TREATMENT ZONE TO ENHANCE THE DRYING CHARACTERISTICS OF THE AIR STREAM, (C) CONTINUING STEPS (A) AND (B) UNTIL THE TEMPERATURE OF THE AIR STREAM LEAVING THE TREATMENT ZONE ATTAINS A PREDETERMINED LEVEL, (D) THEREAFTER DRIVING THE BLOWER AT A DECREASED SECOND SPEED TO DRIVE THE AIR STREAM THROUGH THE TREATMENT ZONE AT A CORRESPONDINGLY DECREASED VOLUMETRIC FLOW RATE, (E) SUBSEQUENT TO STEP (D) STOPPING THE ADDITION OF THERMAL ENERGY TO THE AIR STREAM, (F) AND CONTINUING STEPS (D) AND (E) FOR A PRE-TIMED COOL-DOWN PERIOD.
References Cited (Backward Citations)
US1666917A
Cited
US2369044A
Cited
US2482597A
Cited
US2887785A
Cited
US3087351A
Cited
US3161481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |