US4447249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blowing wool separator method and apparatus
Assignee: Owens Corning
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Filing: 1982-08-16
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Granted: 1984-05-08
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Expires: 2002-08-16
Abstract
Abstract Method and apparatus are disclosed for recovering blowing wool from an air stream by introducing the stream out aa drum rotating in a sealed shroud, the speed of rotating be adjusted in response to the pressure differential across the surface of the drum.
Inventors
- 👤 David M. Kopena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:51
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/26; D; D01; D01H; D01H11/00; D01H11/005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
A method of improving the recovery of glass blowing wool which comprises: a. introducing the wool into contact with the foraminous surface of a revolving drum; b. establishing a pressure differential across said surface of said drum by vacuum producing means; c. altering the speed of revolution of said drum responsive to said pressure differential to build a layer of glass wool of substantially uniform thickness on the drum; and, d. discharging said wool from said drum.
Claim 2
Independent Claim
77 words
A method of improving the recovery of glass blowing wool which comprises: a. introducing the wool into contact with the foraminous surface of a revolving drum; b. establishing a pressure differential across said surface of said drum by vacuum producing means; c. altering the speed of revolution of said drum responsive to said pressure differential to build a layer of glass wool of substantially uniform thickness on the drum; and, d. discharging said wool from said drum.
Claim 3
Dependent Claim
19 words
The method of claim 1 in which said wool is carried onto said foraminous surface in a gaseous stream.
Claim 4
Dependent Claim
29 words
The method of claim 1 in which said drum is driven by an electric motor and said speed of revolution is altered by altering the current to said motor.
Claim 5
Dependent Claim
17 words
The method of claim 1 in which said wool is discharged from said drum into a bagger.
Claim 6
Dependent Claim
30 words
The method of claim 1 in which said pressure differential is established between a locus within said drum and a locus within a conduit transporting said wool onto said drum.
Claim 7
Dependent Claim
97 words
Apparatus comprising: a. a conduit terminating in a shroud; b. a motor-driven, foraminous-surfaced, rotatable drum positioned to rotate within said shroud; c. vanes positioned longitudinally along the exterior surface of said drum and extending outwardly into contact with said shroud; d. differential pressure sensing means positioned to sense a pressure differential across said foraminous surface; dd. means associated with said drum to establish a pressure drop across a portion of the foraminous surface of said drum, and, e. a differential pressure transmitter responsive to said sensing means to alter the speed of rotation of said motor-driven drum.
Claim 8
Dependent Claim
97 words
Apparatus comprising: a. a conduit terminating in a shroud; b. a motor-driven, foraminous-surfaced, rotatable drum positioned to rotate within said shroud; c. vanes positioned longitudinally along the exterior surface of said drum and extending outwardly into contact with said shroud; d. differential pressure sensing means positioned to sense a pressure differential across said foraminous surface; dd. means associated with said drum to establish a pressure drop across a portion of the foraminous surface of said drum, and, e. a differential pressure transmitter responsive to said sensing means to alter the speed of rotation of said motor-driven drum.
Claim 9
Dependent Claim
28 words
The apparatus of claim 6 in which said differential pressure sensing means comprises a pressure probe mounted in said conduit and a pressure probe mounted within said drum.
Claim 10
Dependent Claim
17 words
The apparatus of claim 6 in which said vanes are flexible and comprises a replaceable wearing surface.
Claim 11
Dependent Claim
16 words
The apparatus of claim 6 in which said drum is driven by a direct current motor.
Claim 12
Dependent Claim
22 words
The apparatus of claim 9 in which the speed of said motor is adapted to increase upon an increase in pressure differential.
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) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |