US3293344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational molding method
Assignee: Uniroyal Inc
•
Filing: 1963-06-17
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Granted: 1966-12-20
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Gerald L Barnes
- 👤 John S Bruner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/04; B29C41/06; B29K; B29K2027/00; B29K2027/06; B29K2105/00; B29K2105/25; B29K2105/251
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A METHOD OF MAKING A HOLLOW FUEL TANK OF THERMOPLASTIC RESIN WHICH COMPRISES, COATING THE INNER SURFACE OF A FUEL TANK MOLD WITH A PLASTICIZER FOR THE RESIN, DEPOSITING IN THE MOLD A FLUENT DRY CHARGE OF PARTICLES OF THEREMOPLASTIC VINYL RESIN AND A THICK, VISCOUS, FUEL RESISTANT PLASTICIZER THEREFOR, SAID CHARGE BEING LESS IN VOLUME THAN THE VOLUME OF SAID MOLD, ROTATING THE MOLD IN A PLURALITY OF PLANES WHILE HEATING THE CHARGE TO DISTRIBUTE IT AND FUSE THE SAME INTO A LAYER OTHER THE SURFAC OF THE MOLD IN THE FROM OF THE FUEL TANK, COOLING THE MATERIAL IN THE LAYER AND REMOVING THE ARTICLE FROM THE MOLD.
Claim 2
Independent Claim
110 words
A METHOD OF MAKING A HOLLOW FUEL TANK OF THERMOPLASTIC RESIN WHICH COMPRISES, COATING THE INNER SURFACE OF A FUEL TANK MOLD WITH A PLASTICIZER FOR THE RESIN, DEPOSITING IN THE MOLD A FLUENT DRY CHARGE OF PARTICLES OF THEREMOPLASTIC VINYL RESIN AND A THICK, VISCOUS, FUEL RESISTANT PLASTICIZER THEREFOR, SAID CHARGE BEING LESS IN VOLUME THAN THE VOLUME OF SAID MOLD, ROTATING THE MOLD IN A PLURALITY OF PLANES WHILE HEATING THE CHARGE TO DISTRIBUTE IT AND FUSE THE SAME INTO A LAYER OTHER THE SURFAC OF THE MOLD IN THE FROM OF THE FUEL TANK, COOLING THE MATERIAL IN THE LAYER AND REMOVING THE ARTICLE FROM THE MOLD.
Claim 3
Independent Claim
109 words
A METHOD OF MAKING HOLLOW ARTICLES OF PLASTICIZED THERMOPLASTIC VINYL RESIN COMPRISING, FLUXING A THERMOPLASTIC VINYL RESIN AND A PLASTICIZER THEREFOR, MAKING SMALL PARTICLES OF SAID FLUXED RESIN AND PLASTICIZER, DEPOSITING IN A MOLD A FLUENT CHARGE OF THE PARTICLES OF THE FLUXED RESIN AND PLASTICIAER, SAID CHARGE BEING LESS IN VOLUME THAN THE VOLUME OF SAID MOD, ROTATING THE MOLD IN A PLURALITY OF PLANES WHILE HEATING THE PARTICLES TO DISTRIBUTE THE COMPOUND AND COALESCE THE PARTICLES INTO A LAYER OVER THE SURFACE OF THE MOLD IN THE FORM OF THE OBJECT TO BE MOLDED, COOLING THE COMPOUND IN THE LAYER, AND REMOVING THE ARTICLE FORM THE MOLD.
Claim 4
Independent Claim
109 words
A METHOD OF MAKING HOLLOW ARTICLES OF PLASTICIZED THERMOPLASTIC VINYL RESIN COMPRISING, FLUXING A THERMOPLASTIC VINYL RESIN AND A PLASTICIZER THEREFOR, MAKING SMALL PARTICLES OF SAID FLUXED RESIN AND PLASTICIZER, DEPOSITING IN A MOLD A FLUENT CHARGE OF THE PARTICLES OF THE FLUXED RESIN AND PLASTICIAER, SAID CHARGE BEING LESS IN VOLUME THAN THE VOLUME OF SAID MOD, ROTATING THE MOLD IN A PLURALITY OF PLANES WHILE HEATING THE PARTICLES TO DISTRIBUTE THE COMPOUND AND COALESCE THE PARTICLES INTO A LAYER OVER THE SURFACE OF THE MOLD IN THE FORM OF THE OBJECT TO BE MOLDED, COOLING THE COMPOUND IN THE LAYER, AND REMOVING THE ARTICLE FORM THE MOLD.
References Cited (Backward Citations)
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CA654128A
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GB500298A
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GB585395A
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US3030668A
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GB911646A
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GB905546A
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US3059281A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |