Patent US4741223A successfully refreshed from Google Patents.
US4741223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering wheel
Assignee: Toyota Motor Corp
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Filing: 1984-12-24
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Granted: 1988-05-03
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Expires: 2004-12-24
Abstract
Abstract A steering wheel made of resin, wherein a reinforcement, as a core of the steering wheel, consists of reinforcing members corresponding to a ring part, a sub-ring part and spoke parts, which are formed of windings and by hardening of a strand of continuously long fiber impregnated with a resin for hardening, after being wound onto the ring part, the sub-ring part and the spoke parts via a boss and spacers which are disposed at the joints between the ring part, the sub-ring part and the spoke parts.
Inventors
- 👤 Katsumi Kondo
- 👤 Yasuhiro Tsutiya
- 👤 Yasushi Yamazawa
- 👤 Takatsune Niimi
- 👤 Takashi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:38
CPC Classifications
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: 12
Claim 1
Independent Claim
114 words
A method for the manufacture of a steering wheel having a reinforcement consisting of a fiber reinforced plastic, comprising the steps of: disposing a boss at a center of a jig, disposing spacers at joint between a ring part, a sub-ring part and spoke parts of the jig, impregnating a strand of continuously long fiber with a resin, fastening one end of the strand of fiber impregnated with the resin to the boss, integrating the boss, spacers and fiber by winding the strand of fiber via the spacers and the boss on the jigs of the ring part, the sub-ring part and spoke parts, hardening the resin, and removing the jigs after the hardening.
Claim 2
Independent Claim
114 words
A method for the manufacture of a steering wheel having a reinforcement consisting of a fiber reinforced plastic, comprising the steps of: disposing a boss at a center of a jig, disposing spacers at joint between a ring part, a sub-ring part and spoke parts of the jig, impregnating a strand of continuously long fiber with a resin, fastening one end of the strand of fiber impregnated with the resin to the boss, integrating the boss, spacers and fiber by winding the strand of fiber via the spacers and the boss on the jigs of the ring part, the sub-ring part and spoke parts, hardening the resin, and removing the jigs after the hardening.
Claim 3
Dependent Claim
87 words
A steering wheel comprising: a boss; at least one spacer; and a reinforcement formed of hardened windings of a continuous strand of long fiber impregnated with a hardenable resin, said reinforcement defining a ring part, a sub-ring part and at least one spoke part, said boss being being integrally formed with each said spoke part at one end of said spoke part, and each said spacer being integrally formed with said reinforcement at a joint between one said spoke part, said ring part and said sub-ring part.
Claim 4
Dependent Claim
87 words
A steering wheel comprising: a boss; at least one spacer; and a reinforcement formed of hardened windings of a continuous strand of long fiber impregnated with a hardenable resin, said reinforcement defining a ring part, a sub-ring part and at least one spoke part, said boss being being integrally formed with each said spoke part at one end of said spoke part, and each said spacer being integrally formed with said reinforcement at a joint between one said spoke part, said ring part and said sub-ring part.
Claim 5
Dependent Claim
24 words
A steering wheel according to claim 2, wherein said boss is made of one from the group consisting of resin and fiber reinforced plastic.
Claim 6
Dependent Claim
27 words
A steering wheel according to claim 2, wherein said boss is made of one from the group consisting of aluminum, aluminum alloy, magnesium, magnesium alloy and steel.
Claim 7
Dependent Claim
31 words
A steering wheel according to claim 2, wherein said continuous fiber is made from one from the group consisting of glass fiber, carbon fiber, polyaromatic amid fiber and a mixture thereof.
Claim 8
Dependent Claim
14 words
A steering wheel according to claim 2, wherein said fiber is continuous glass fiber.
Claim 9
Dependent Claim
25 words
A steering wheel according to claim 2, wherein said at least one spacer has a shape of one of a cylinder and a hand drum.
Claim 10
Dependent Claim
40 words
The steering wheel of claim 2 wherein said fiber winds around said boss and said at least one spacer to integrate said boss with each said spoke part and to integrate each said spacer with a respective said reinforcement joint.
Claim 11
Dependent Claim
21 words
The steering wheel of claim 8 including at least two of said spoke parts and at least two of said spacers.
Claim 12
Dependent Claim
21 words
The steering wheel of claim 2 including at least two of said spoke parts and at least two of said spacers.
References Cited (Backward Citations)
US1680646A
Cited
US2409645A
Cited
GB964099A
Cited
US3738885A
Cited
GB2004835A
Cited
GB2041858A
Cited
JPS5863572A
Cited
US4419908A
Cited
US4440593A
Cited
US4483214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |