US5336016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber vehicular impact barrier
Assignee: Individual
•
Filing: 1993-09-09
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Granted: 1994-08-09
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Expires: 2013-09-09
Abstract
Abstract This invention relates to a method of manufacturing a homogeneous solid rubber vehicular barrier, comprising the steps of: mixing and knead melting a mixture of: 80 to 90 percent by weight particles of recycled waste rubber; 10 to 20 percent by weight virgin rubber; and an accelerator composition; forming the mixture in a mould to a selected barrier configuration thus forming a barrier; curing the mixture within the mould at a temperature of 250 ° to 450° C. at a pressure of 500 to 1000 psi for a period of time from 1.5 to 7.5 hours; and removing the cured barrier from the mould. A homogeneous moulded solid rubber vehicular barrier, is thereby formed of 80 to 90 percent by weight particles of recycled waste rubber in a matrix of 10 to 20 percent by weight virgin rubber. The completed barrier has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 and 70.
Inventors
- 👤 Guenter A. Baatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:26
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/08; E01F15/088; B; B29; B29B; B29B17/00; B29B17/0026; B29B17/0042; C; C08; C08L; C08L19/00; C08L19/003; E01F15/04; E01F15/0476; E01F15/081; E01F15/086; B29K; B29K2021/00; C08L7/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
153 words
A method of manufacturing a homogeneous solid rubber vehicular barrier, comprising the steps of: mixing and knead melting a mixture of: 80 to 90 percent by weight particles of recycled waste rubber; 10 to 20 percent by weight virgin rubber; and an accelerator composition; forming the mixture in a mould to a selected barrier configuration thus forming a barrier wherein the barrier has an elongate body of uniform cross section, said cross section being substantially trapezoidal having a base, a top surface and two inclined concave side surfaces; curing the mixture within the mould at a temperature of 250° to 450° C at a pressure of 500 to 1000 psi for a period of time from 1.5 to 7.5 hours wherein said barrier when fully cured has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 to 70; and removing the cured barrier from the mould.
Claim 2
Independent Claim
153 words
A method of manufacturing a homogeneous solid rubber vehicular barrier, comprising the steps of: mixing and knead melting a mixture of: 80 to 90 percent by weight particles of recycled waste rubber; 10 to 20 percent by weight virgin rubber; and an accelerator composition; forming the mixture in a mould to a selected barrier configuration thus forming a barrier wherein the barrier has an elongate body of uniform cross section, said cross section being substantially trapezoidal having a base, a top surface and two inclined concave side surfaces; curing the mixture within the mould at a temperature of 250° to 450° C at a pressure of 500 to 1000 psi for a period of time from 1.5 to 7.5 hours wherein said barrier when fully cured has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 to 70; and removing the cured barrier from the mould.
Claim 3
Dependent Claim
25 words
A method according to claim 1 wherein the mixture comprises 87 to 89 percent said waste rubber and 11 to 13 percent said virgin rubber.
Claim 4
Dependent Claim
15 words
A method according to claim 1 wherein the temperature is from 325° to 375° C.
Claim 5
Dependent Claim
15 words
A method according to claim 1 wherein the pressure is from 700 to 800 psi.
Claim 6
Dependent Claim
17 words
A method according to claim 1 wherein the period of time is from 4 to 5 hours.
Claim 7
Dependent Claim
20 words
A method according to claim 1 including the step of adding colouring pigments to the mixture during the mixing step.
Claim 8
Dependent Claim
25 words
A method according to claim 1 including the step of magnetically removing metallic contaminants from the recycled waste rubber particles prior to said mixing step.
Claim 9
Dependent Claim
80 words
A homogeneous moulded solid rubber vehicular barrier, comprising: 80 to 90 percent by weight particles of recycled waste rubber; and 10 to 20 percent by weight virgin cured uncontaminated rubber, and has a Shore hardness of between wherein said barrier has a finished outer surface of between 65 to 70 and wherein the barrier has an elongate body of uniform cross section, said cross section being substantially trapezoidal having a base, a top surface and two inclined concave side surfaces.
Claim 10
Dependent Claim
80 words
A homogeneous moulded solid rubber vehicular barrier, comprising: 80 to 90 percent by weight particles of recycled waste rubber; and 10 to 20 percent by weight virgin cured uncontaminated rubber, and has a Shore hardness of between wherein said barrier has a finished outer surface of between 65 to 70 and wherein the barrier has an elongate body of uniform cross section, said cross section being substantially trapezoidal having a base, a top surface and two inclined concave side surfaces.
Claim 11
Dependent Claim
15 words
A barrier according to claim 8 having a mass of between 13 and 17 tons.
Claim 12
Dependent Claim
26 words
A barrier according to claim 8 wherein the recycled waste rubber particles contain metallic contaminants, and the finished outer surface is free of said metallic contaminants.
Claim 13
Dependent Claim
32 words
A barrier according to claim 8 wherein the recycled waste rubber particles comprise reclaimed particles of vehicular tires of a maximum dimension less than or equal to 3/8 the of an inch.
Claim 14
Dependent Claim
21 words
A barrier according to claim 8 wherein the recycled waste rubber particles comprise particles reclaimed from buffing of retread vehicular tires.
Claim 15
Dependent Claim
71 words
A homogeneous moulded solid rubber vehicular barrier, comprising: 80 to 90 percent by weight particles of recycled waste rubber; and 10 to 20 percent by weight virgin rubber; wherein said barrier has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 and 70 and wherein the barrier has an elongate body of uniform cross section including bottom pedestal means for embedment of the barrier.
Claim 16
Dependent Claim
71 words
A homogeneous moulded solid rubber vehicular barrier, comprising: 80 to 90 percent by weight particles of recycled waste rubber; and 10 to 20 percent by weight virgin rubber; wherein said barrier has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 and 70 and wherein the barrier has an elongate body of uniform cross section including bottom pedestal means for embedment of the barrier.
Claim 17
Dependent Claim
86 words
A homogeneous moulded solid rubber vehicular barrier, comprising: 80 to 90 percent by weight particles of recycled waste rubber; and 10 to 20 percent by weight virgin rubber; wherein said barrier has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 to 70, the barrier including interconnecting means at longitudinally opposing ends of the barrier for interconnecting like barriers in a longitudinal series, wherein the interconnecting means comprise a mating tongue and groove of substantially triangular horizontal cross section.
Claim 18
Dependent Claim
86 words
A homogeneous moulded solid rubber vehicular barrier, comprising: 80 to 90 percent by weight particles of recycled waste rubber; and 10 to 20 percent by weight virgin rubber; wherein said barrier has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 to 70, the barrier including interconnecting means at longitudinally opposing ends of the barrier for interconnecting like barriers in a longitudinal series, wherein the interconnecting means comprise a mating tongue and groove of substantially triangular horizontal cross section.
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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) | 1997-08-08 | 1998-02-07 | 1998-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-08 | 2002-02-07 | 2002-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-08 | 2006-02-07 | 2006-08-09 | $7700.00 | Window Closed / Lapsed |