US2730759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reclaim processing apparatus
Assignee: Bridgestone Firestone Inc
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Filing: 1953-03-03
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Granted: 1956-01-17
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Expires: 1973-03-03
Abstract
No abstract record available.
Inventors
- 👤 George J Glass
- 👤 George L Bruggemeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:41
CPC Classifications
B; B29; B29B; B29B17/00; B29C; B29C48/00; B29C48/03; B29C48/25; B29C48/78; B29C48/80; B29C48/83; B29C48/832; B29C48/834; B29K; B29K2021/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
APPARATUS FOR PROCESSING PLASTIC MATERIAL COMPRISING A SHAFT, MEANS TO DRIVE SAID SHAFT AT ONE END, SAID SHAFT HAVING A FEED END AND A DELIVERY END ROTATABLE IN THE BORE OF A FIXED HOUSING AND ADAPTED TO MASTICATE SAID MATERIAL AGAINST THE WALLS OF SAID BORE, SAID SHAFT COMPRISING HELICAL SCREWS ON THE FEED AND DELIVERY ENDS, SAID SCREWS BEING SEPARATED BY A TAPERED PORTION, THE WALL OF SAID BORE ADJACENT SAID FIRST SCREW BEING HELICALLY FLUTED AND HAVING A PITCH OPPOSITE TO THE PITCH OF THE COOPERATING SHAFT SCREW, THE WALLS OF THE BORE ADJACENT SAID TAPERED ROTOR HAVING A SMOOTH SURFACE TAPERED COMPLEMENTALLY TO SAID TAPERED SHAFT PORTION , THE WALLS OF THE BORE ADJACENT SAID SECOND SCREW HAVING A SMOOTH CYLINDRICAL SURFACE.
Claim 2
Dependent Claim
125 words
APPARATUS FOR PROCESSING PLASTIC MATERIAL COMPRISING A SHAFT, MEANS TO DRIVE SAID SHAFT AT ONE END, SAID SHAFT HAVING A FEED END AND A DELIVERY END ROTATABLE IN THE BORE OF A FIXED HOUSING AND ADAPTED TO MASTICATE SAID MATERIAL AGAINST THE WALLS OF SAID BORE, SAID SHAFT COMPRISING HELICAL SCREWS ON THE FEED AND DELIVERY ENDS, SAID SCREWS BEING SEPARATED BY A TAPERED PORTION, THE WALL OF SAID BORE ADJACENT SAID FIRST SCREW BEING HELICALLY FLUTED AND HAVING A PITCH OPPOSITE TO THE PITCH OF THE COOPERATING SHAFT SCREW, THE WALLS OF THE BORE ADJACENT SAID TAPERED ROTOR HAVING A SMOOTH SURFACE TAPERED COMPLEMENTALLY TO SAID TAPERED SHAFT PORTION , THE WALLS OF THE BORE ADJACENT SAID SECOND SCREW HAVING A SMOOTH CYLINDRICAL SURFACE.
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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |