Patent US4468978A successfully refreshed from Google Patents.
US4468978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering wheel with a resin core
Assignee: Nissan Motor Co Ltd
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Filing: 1981-07-16
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Granted: 1984-09-04
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Expires: 2001-07-16
Abstract
Abstract An improved steering wheel has a reinforcement member extending through a resin core. The reinforcement member is provided in a central connecting portion where the steering wheel is engaged with a steering shaft, a spoke portion or portions extending radially from the central portion, and at least the parts of the grip portion where the grip portion is connected with the spoke portion. The reinforcement member is made of metal of thin cross-section so that the weight thereof does not seriously interfere with formation of a light-weight steering wheel.
Inventors
- 👤 Michiyoshi Takahara
- 👤 Nobuo Saegusa
- 👤 Kazuyoshi Nishijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:10
CPC Classifications
G; G05; G05G; G05G1/00; G05G1/08; G05G1/10; B; B62; B62D; B62D1/00; B62D1/02; B62D1/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
205 words
A steering wheel comprising: a central portion including a cylindrical metal core engageable to a steering shaft, a first resin layer surrounding said cylindrical metal core and having an elastic modulus sufficient for resisting against bending stress applied to the steering wheel, and a second resin layer of substantially soft material and surrounding said first resin layer; a spoke portion having and extending from said central portion and including a first metal core extending from said cylindrical metal core substantially along the axis of said spoke portion, said first resin layer surrounding said first metal core, wherein said first resin layer surrounding said first metal core has a horizontally elongated rectangular cross section with vertically aligned reinforcement ribs respectively extending along the axis of said spoke portion in parallel relationship with respect to each other; and a rim portion including a first rim portion and a second rim portion, said first rim portion having a second metal core connected to said first metal core of said spoke portion, said first resin layer surrounding said second metal core and said second resin layer surrounding said first resin layer, and said second rim portion having said first resin layer and said second resin layer in coaxial arrangement.
Claim 2
Dependent Claim
205 words
A steering wheel comprising: a central portion including a cylindrical metal core engageable to a steering shaft, a first resin layer surrounding said cylindrical metal core and having an elastic modulus sufficient for resisting against bending stress applied to the steering wheel, and a second resin layer of substantially soft material and surrounding said first resin layer; a spoke portion having and extending from said central portion and including a first metal core extending from said cylindrical metal core substantially along the axis of said spoke portion, said first resin layer surrounding said first metal core, wherein said first resin layer surrounding said first metal core has a horizontally elongated rectangular cross section with vertically aligned reinforcement ribs respectively extending along the axis of said spoke portion in parallel relationship with respect to each other; and a rim portion including a first rim portion and a second rim portion, said first rim portion having a second metal core connected to said first metal core of said spoke portion, said first resin layer surrounding said second metal core and said second resin layer surrounding said first resin layer, and said second rim portion having said first resin layer and said second resin layer in coaxial arrangement.
Claim 3
Dependent Claim
25 words
A steering wheel as set forth in claim 1, wherein said first resin layer surrounding said first metal core has a substantially E-shaped cross section.
Claim 4
Dependent Claim
19 words
A steering wheel as set forth in claim 2, wherein said first metal core extends through an intermediate rib.
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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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |