US4579775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering wheel for automobile
Assignee: Toyoda Gosei Co Ltd
•
Filing: 1984-04-25
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Granted: 1986-04-01
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Expires: 2004-04-25
Abstract
Abstract A steering wheel for automobiles in which the coated part of the rim core bar comprises a soft foam with a skin layer. The soft foam with a skin layer result from expansion molding of a polyvinyl chloride plastisol. The polyvinyl choride plastisol is prepared by blending a paste resin with a plasticizer, a stabilizer, an expanding medium and other subsidiary materials.
Inventors
- 👤 Satoshi Ohta
- 👤 Masahiro Takimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:37
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/02; B62D1/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249987; Y10T428/249988; Y10T428/249989; Y10T428/24999; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/2087
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
77 words
A steering wheel for automobiles comprising a rim core bar having a foamed polymeric coating attached thereto in which the polymeric coating comprises a soft, resilient foam with an integral skin layer thereon, wherein said soft, resilient foam with said integral skin layer results from the expansion molding of a polyvinyl chloride plastisol, which plastisol consists essentially of a polyvinyl chloride paste resin blended together with a plasticizer, a stabilizer, an expanding medium and other subsidiary materials.
Claim 2
Dependent Claim
77 words
A steering wheel for automobiles comprising a rim core bar having a foamed polymeric coating attached thereto in which the polymeric coating comprises a soft, resilient foam with an integral skin layer thereon, wherein said soft, resilient foam with said integral skin layer results from the expansion molding of a polyvinyl chloride plastisol, which plastisol consists essentially of a polyvinyl chloride paste resin blended together with a plasticizer, a stabilizer, an expanding medium and other subsidiary materials.
Claim 3
Dependent Claim
21 words
The steering wheel of claim 1 in which the plastisol also contains a crosslinking agent to crosslink the vinyl chloride polymer.
Claim 4
Dependent Claim
29 words
The steering wheel of claim 1 in which the particles of the polyvinyl chloride paste resin are in the range of about 10 -5 to about 10 -7 cm.
Claim 5
Dependent Claim
20 words
The steering wheel of claim 1 in which the plasticizer is a phthalate-containing plasticizer having at least 9 carbon atoms.
Claim 6
Dependent Claim
18 words
The steering wheel of claim 1 in which an adhesive layer secures the foam to the rim core.
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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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |