US4118455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft rubber steering wheel, composition and method of manufacture
Assignee: Sheller-Globe Corp
•
Filing: 1977-02-24
•
Granted: 1978-10-03
•
Expires: 1997-02-24
Abstract
Abstract An injection molding process for the manufacture of a sports type steering wheel rim cover having a soft feel and high wear resistance without exudation of plasticizer which could produce a slippery rim section or windshield fogging. The process includes the use of a novel soft rubber composition which achieves the above-described characteristics for a steering wheel and the invention also includes the steering wheel product made by this process and composition.
Inventors
- 👤 James H. Byrn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:14
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/02; B62D1/04; B62D1/06; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/2087
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
109 words
A method of forming a cover on a steering wheel of the type having a hub, spokes and an annular metal core, comprising the steps of furnishing a compound having the following ingredients: ______________________________________
Preferred Range
Ingredient (Parts by Weight)
______________________________________
[SBR] cold type oil-extended
styrene butadiene rubber
100-135
[SBR] cold type styrene butadiene
rubber 10-25
Whole Tire Reclaim
(Non-staining) 5-25
[Dixie Clay] kaolin 10-40
[FEF Black] carbon black
20-80
Sulfur 3-6
Zinc Oxide 1-10
[Altax] benzothiazyl disulfide
0.1-2.0
[Cumate] copper dimethyl dithiocarbamate
0.1-2.0
[Circosol 450 Oil] naphthenic oil
20-60
______________________________________ and injection molding said compound around said core to form a rim section cover on the steering wheel.
Claim 2
Dependent Claim
30 words
A method according to claim 1, further provided with the steps of immersing the demolded steering wheel in a chlorine solution, and coating the cover with a urethane top coat.
Claim 3
Dependent Claim
75 words
A soft rubber composition for use in the manufacture of steering wheel rim covers comprising the following: ______________________________________
Preferred Range
Ingredient (Parts by Weight)
______________________________________
[SBR] cold type oil-extended
styrene butadiene rubber
100-135
[SBR] cold type styrene butadiene
rubber 10-25
Whole Tire Reclaim
(Non-staining) 5-25
[Dixie Clay] kaolin 10-40
[FEF Black] carbon black
20-80
Sulfur 3-6
Zinc Oxide 1-10
[Altax] benzothiazyl disulfide
0.1-2.0
[Cumate] copper dimethyl dithiocarbamate
0.1-2.0
[Circosol 450 Oil] naphthenic oil
20-60
______________________________________
Claim 4
Dependent Claim
91 words
A steering wheel having a hub, spokes radiating from said hub, an annular metal core secured to the outer ends of said spokes, and a cover on said core having the following composition: ______________________________________
Preferred Range
Ingredient (Parts by Weight)
______________________________________
[SBR] cold type oil-extended
styrene butadiene rubber
100-135
[SBR] cold type styrene butadiene
rubber 10-25
Whole Tire Reclaim
(Non-staining) 5-25
[Dixie Clay] kaolin 10-40
[FEF Black] carbon black
20-80
Sulfur 3-6
Zinc Oxide 1-10
[Altax] benzothiazyl disulfide
0.1-2.0
[Cumate] copper dimethyl dithiocarbamate
0.1-2.0
[Circosol 450 Oil] naphthenic oil
20-60
______________________________________
Claim 5
Dependent Claim
17 words
A steering wheel according to claim 4, said cover being further provided with a urethane top coat.
References Cited (Backward Citations)
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Cited
US3386925A
Cited
US3523493A
Cited
US3640912A
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US3802291A
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US4052344A
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US3896059A
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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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |