Patent US4598002A successfully refreshed from Google Patents.
US4598002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core bar of steering wheel
Assignee: Toyoda Gosei Co Ltd
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Filing: 1984-04-27
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Granted: 1986-07-01
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Expires: 2004-04-27
Abstract
Abstract The present invention relates to the core bar of steering wheels. The core bar comprises a ring part formed into a hollow pipe-shaped form having a hollow part using at least one metal plate; a coating layer made of a synthetic resin covering the entire surface of the ring part; and a regulating means installed on the ring part to prevent the movement of the coating layer on the ring part in the direction of the periphery of the cross section of the ring part. The ring part has reinforcing fillers packed into its hollow part.
Inventors
- 👤 Saburo Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:18
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/02; B62D1/04; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12326; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
106 words
A core member of a steering wheel, comprising: a ring portion formed into a hollow pipe-shaped form by bending at least one metal plate; at least one regulating means formed from said ring portion for preventing a coating layer on said ring portion from rotating around said ring portion, said regulating means being at least one of (A) as obstructing protrusion which is at least one edge part of said metal plate and (B) a recession formed on a surface of said ring portion in contact with said layer; a boss portion; and at least one spoke portion connecting said ring portion and said boss portion.
Claim 2
Dependent Claim
106 words
A core member of a steering wheel, comprising: a ring portion formed into a hollow pipe-shaped form by bending at least one metal plate; at least one regulating means formed from said ring portion for preventing a coating layer on said ring portion from rotating around said ring portion, said regulating means being at least one of (A) as obstructing protrusion which is at least one edge part of said metal plate and (B) a recession formed on a surface of said ring portion in contact with said layer; a boss portion; and at least one spoke portion connecting said ring portion and said boss portion.
Claim 3
Dependent Claim
50 words
The core member as in claim 1, wherein the ring part is formed by bending one metal plate and the regulating means is an obstructing protrusion which is at least the one edge part of the bent plate metal and protrudes toward at least the outside of the ring part.
Claim 4
Dependent Claim
30 words
The core member as in claim 1, wherein the obstructing protrusion is a joint part in which the both edge parts of the metal plate are joined with each other.
Claim 5
Dependent Claim
51 words
The core member as in claim 1, wherein the ring part is formed by bending two metal plates and then by combining them with each other and the regulating means is a pair of obstructing protrusions protruding from each metal plate toward both the inside and outside of the ring part.
Claim 6
Dependent Claim
34 words
The core member as in claim 1, wherein the regulating means is an obstructing recession formed by recessing a part of the surface of the metal plate toward the inside of the hollow part.
Claim 7
Dependent Claim
27 words
The core member as in claim 5, wherein the obstructing recession is formed by recessing two longitutinally continuous, separate places on the surface of the metal plate.
Claim 8
Dependent Claim
21 words
The core member as in claim 1, wherein the ring part has reinforcing fillers packed and solidified in its hollow part.
Claim 9
Dependent Claim
23 words
The core member as in claim 7, wherein the reinforcing fillers are low-specific gravity ones formed by blending a polyester resin with sawdust.
Claim 10
Dependent Claim
51 words
The core member as in claim 7, wherein the ring part is formed by bending one metal plate and the regulating means is an obstructing protrusion which is the both edge parts of the metal plate and protrudes toward the outside of the ring part to engage with the coating layer.
References Cited (Backward Citations)
US2827801A
Cited
US3398601A
Cited
US3583255A
Cited
US4118455A
Cited
JPS5648502A
Cited
JPS5774872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |