Patent US4522084A successfully refreshed from Google Patents.
US4522084A
Expired / Lapsed
US
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Steering wheel for a vehicle
Assignee: Toyoda Gosei Co Ltd
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Filing: 1983-10-11
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Granted: 1985-06-11
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Expires: 2003-10-11
Abstract
Abstract A steering wheel for a vehicle formed from a molded polyurethane resin and a molded vinyl chloride resin which contains a heat stabilizer consisting of (I) 1 to 3 phr of the organo maleate, (II) 1 to 4 phr of zinc soap and 0.3 to 1.0 phr of an organo-phosphite, or (III) 1 to 3 phr of organotin maleate, 1 to 4 phr of zinc soap and 0.3 to 1.0 phr of an organo-phosphite.
Inventors
- 👤 Masahiro Takimoto
- 👤 Satoshi Ota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:06
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/02; B62D1/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/20864; Y10T74/2087; Y10T74/20876
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
72 words
In a vehicle steering wheel formed from a molded polyvinyl chloride resin which is in physical contact with a molded polyurethane resin, the improvement wherein said molded polyvinyl chloride resin contains a color change-inhibiting amount of a heat stabilizer selected from the group consisting of: (i) 1 to 3 phr of an organotin maleate; and (ii) 1 to 4 phr of a zinc soap and 0.3 to 1.0 phr of an organo-phosphite.
Claim 2
Dependent Claim
72 words
In a vehicle steering wheel formed from a molded polyvinyl chloride resin which is in physical contact with a molded polyurethane resin, the improvement wherein said molded polyvinyl chloride resin contains a color change-inhibiting amount of a heat stabilizer selected from the group consisting of: (i) 1 to 3 phr of an organotin maleate; and (ii) 1 to 4 phr of a zinc soap and 0.3 to 1.0 phr of an organo-phosphite.
Claim 3
Dependent Claim
18 words
A steering wheel as set forth in claim 1 in which the organotin maleate is an alkyltin maleate.
Claim 4
Dependent Claim
27 words
A steering wheel as set forth in claim 1 in which the organo-phosphite is selected from the group consisting of a trialkylphosphite, an alkylphenylphosphite and an alkoxy-phosphite.
Claim 5
Dependent Claim
49 words
A steering wheel as set forth in claim 1, wherein at least one of the boss and pad of said steering wheel is formed from said vinyl chloride resin, and at least one of the ring portion and spokes of said steering wheel is formed from said polyurethane resin.
Claim 6
Dependent Claim
49 words
A steering wheel as set forth in claim 1, wherein at least one of the boss and pad of said steering wheel is formed from said polyurethane resin, and at least one of the ring portion and spokes of said steering wheel is formed from said vinyl chloride resin.
Claim 7
Dependent Claim
40 words
A steering wheel as set forth in claim 1, wherein said vinyl chloride resin is a soft polyvinyl chloride which contains a suspension polymerized straight resin having a medium degree of polymerization, a plasticizer, a filler and a heat stabilizer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |