Patent US3728083A successfully refreshed from Google Patents.
US3728083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer finisher
Assignee: Honeywell International Inc
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Filing: 1971-03-03
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Granted: 1973-04-17
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Expires: 1991-03-03
Abstract
Abstract Apparatus for promoting polymerization reactions such as polyester wherein an inner edge of the rim of a wheel in the rotating element of the apparatus is left intact in a continuous circle, and projections of specific designs are attached wherein pumping action can be obtained without interfering with the ability of the wheel to film polymer melts up to about 100,000 poises viscosity.
Inventors
- 👤 J Greenburg
- 👤 L Balini
- 👤 W Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:13
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/115; B01F27/1151; B01F27/1152; B01F27/1153; B01J; B01J10/00; B01J10/02; B01J19/00; B01J19/18; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; C; C08; C08G; C08G63/00; C08G63/78; C08G63/785; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00164; B01J2219/00166; B01J2219/18; B01J2219/182
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
175 words
An apparatus for finishing liquid viscous polymer material which comprises a horizontal cylindrical vessel, an inlet and outlet for said material at opposite ends of said vessel and at least one outlet for the removal of volatile material, a jacket for heating of material, a rotatable agitator mounted substantially concentric with the horizontal cylindrical axis for rotation within said vessel and having a drive shaft for rotating said shaft, said shaft having spoked wheels, the inner edge of each wheel rim being left intact in a continuous circle, the outer edge of each wheel rim having projections which allow continuous filming and pumping action from the inlet to the exit end of the reactor of said material having a melt viscosity of from about 1,000 poises to about 100,000 poises, said wheel rim projections being an integral part of said rim, each projection spaced at an angle of projection between about 10* and about 45* from the exterior side of said wheel rim, and said projections not exceeding fifty percent of the total wheel rim.
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |