US4028288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moldable end products from primarily reclaimable waste materials
Assignee: BANSTAR Corp (UTAH CORP)
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Filing: 1976-02-03
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Granted: 1977-06-07
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Expires: 1996-02-03
Abstract
Abstract A heat and pressure moldable material end product made from injection or extrusion molding processes using a mixture of reclaimed pre-vulcanized rubber bits and resinous thermoplastic material bits as raw material. The reset end product is a homogeneously incomplete mixture of the raw material, including reset resin and rubber mixture portions and rubber bits per se in a bonded inter-relationship. The porosity of the end product is controllable by the relative amount and size of rubber particles in the raw material mixture.
Inventors
- 👤 James E. Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:04
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/0026; C; C08; C08J; C08J11/00; C08J11/04; C08J11/06; B29L; B29L2030/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10S; Y10S264/00; Y10S264/911; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
A heat and pressure molded end product comprising a mixture of particalized rubber tires including the fibrous cord content thereof and a lesser amount of synthetic resin thermoplastic material bits, said end product comprising a substantially homogeneously incomplete reset mixture, including portions of a reset mixture of melted synthetic thermoplastic resin and rubber tire particles, and portions of said rubber tire particles, per se, in a bonded relationship, the porosity of said end product being substantially proportional to the ratio of said rubber tire particles to said synthetic thermoplastic resin material bits in said mixture.
Claim 2
Dependent Claim
95 words
A heat and pressure molded end product comprising a mixture of particalized rubber tires including the fibrous cord content thereof and a lesser amount of synthetic resin thermoplastic material bits, said end product comprising a substantially homogeneously incomplete reset mixture, including portions of a reset mixture of melted synthetic thermoplastic resin and rubber tire particles, and portions of said rubber tire particles, per se, in a bonded relationship, the porosity of said end product being substantially proportional to the ratio of said rubber tire particles to said synthetic thermoplastic resin material bits in said mixture.
Claim 3
Dependent Claim
25 words
The product of claim 1 with said synthetic thermoplastic resin material comprising particalized scrap including at least one of the materials polyethylene, styrene, and polypropylene.
Claim 4
Dependent Claim
13 words
The product of claim 1, with said synthetic thermoplastic resin material comprising fiberglass.
Claim 5
Dependent Claim
25 words
The product of claim 2, with said end product comprising, in material cross section, a plurality of gas-formed material voids between substantially contiguous wall surfaces.
Claim 6
Dependent Claim
28 words
The product of claim 4, with said particalized rubber tire material comprising, by weight, not less than 50 percent and not more than 80 percent of said mixture.
Claim 7
Dependent Claim
23 words
The product of claim 5, with said particalized rubber tire material comprising material bits sized between 30 mesh and 3/8 inch screen mesh.
Claim 8
Dependent Claim
24 words
The product of claim 6, with the fibrous content of said particalized rubber tires comprising less than 10 percent of said mixture by weight.
References Cited (Backward Citations)
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US3489710A
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US3338849A
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US3401128A
Cited
US3386925A
Cited
US3594335A
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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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |