US3819796A
Expired / Lapsed
US
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Method of forming foamed polyolefin casts on a living body
Assignee: BXL Plastics Ltd
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Filing: 1972-05-08
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Granted: 1974-06-25
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Expires: 1992-05-08
Abstract
Abstract A METHOD OF FORMING A CAST FOR A PORTION OF A LIVING BODY COMPRISES BRINGING A SHEET OF A FOAMED, AT LEAST PARTIALLY CORSS-LINKED, THERMOPLASTICS MATERIAL, SUCH AS POLYETHYLENE, TO A TEMPERATURE WHICH PLASTICIZES IT AND RENDERS IT PLIABLE WITHOUT DESTRUCTION OF ITS FOAMED, CELLULAR CHARACTER. THE PLIABLE THERMOPLASTICS MATERIAL CAN BE SHAPED DIRECTLY ONTO A LIVING BODY. AFTER COOLING THE MATERIAL CAN BE SHAPED DIRECTLY ONTO A LIVING BODY. AFTER COOLING THE MATERIAL SETS IN THE CONFIGURATION OF THE BODY. THE TECHNIQUE CAN BE USED IN THE FORMATION OF ORTHOPAEDIC SUPPORTS. THE MATERIAL MAY HAVE A REINFORCING MEMBER EMBEDDED WITHIN IT.
Inventors
- 👤 J Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:37
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/32; A; A61; A61F; A61F5/00; A61F5/01; A61F5/04; A61F5/05; A61F5/055; A61F13/00; A61F13/04; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1204; B29C44/34; B29C44/56; B29C44/5627; B29C44/5636; B32B27/00; B32B27/06; B32B27/065; B32B27/32; C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; B29L; B29L2031/00; B29L2031/753; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2266/08; B32B2323/00; B32B2323/04; B32B2535/00; C08J2323/00; C08J2323/02; C08J2323/04; Y; Y10; Y10S; Y10S264/00; Y10S264/18
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |