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US5243877A Expired / Lapsed US ⏱️ 0.0 years remaining

Steering wheel rim

Assignee: IZUMAI Corp
•
Filing: 1992-07-20
•
Granted: 1993-09-14
•
Expires: 2012-07-20
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Abstract

Abstract A vehicle steering wheel armature comprises a steel hub adapted to be axially secured to a steering shaft and magnesium rim and rim support molded about and supported by said steel hub. The circular rim is in cross section downwardly U-shaped. The rim support has two arms--right and left--downwardly angled from the hub as viewed by an operator and integrating with the rim over a length along the rim. The hub is depressed below the rim and accommodates an air bag container. The arms are stepped to created at least two plane areas generally parallel to the plane of said rim, one of which attaches to said rim and the other providing a surface for the air bag container. Preferably, there is an angled flat bar at the plane of said rim connecting the two lower joinder points of said arms with said rim. The preferred composition of the steering wheel is magnesium of at least ninety-three weight percent, aluminum of five percent with the balance containing some zinc, manganese and silicon. Also the radius of the upper portion of the rim is greater than the lower portion and their diameters differ in the same manner.

Inventors

  • 👤 Ryusaku Numata

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 13:47
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/02; B62D1/04; B62D1/11; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/20; B60R21/203; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 111 words
A vehicle steering wheel armature, comprising: a. a steel hub adapted to be axially secured to a steering shaft; and b. a one piece magnesium rim and rim support about and supported by said steel hub; i. said rim being generally circular and adapted to be grasped by the hand and being in cross section on the back side downwardly U-shaped; ii. said rim support having two broad arms--right and left--downwardly angled from said steel hub as viewed by an operator and integrating with said rim; and iii. said rim having an upper and lower portion, the radius of the upper portion being greater than the radius of the lower portion.
Claim 2
Dependent Claim 111 words
A vehicle steering wheel armature, comprising: a. a steel hub adapted to be axially secured to a steering shaft; and b. a one piece magnesium rim and rim support about and supported by said steel hub; i. said rim being generally circular and adapted to be grasped by the hand and being in cross section on the back side downwardly U-shaped; ii. said rim support having two broad arms--right and left--downwardly angled from said steel hub as viewed by an operator and integrating with said rim; and iii. said rim having an upper and lower portion, the radius of the upper portion being greater than the radius of the lower portion.
Claim 3
Dependent Claim 39 words
The vehicle steering wheel armature of claim 1 wherein said arms join at and broadly encompass said hub wherein each said arms in broad detail is the mirror image of the other from the center line of said hub.
Claim 4
Dependent Claim 43 words
The vehicle steering wheel armature of claim 2 wherein said rim and arms have a magnesium content of at least ninety-three weight percent and an aluminum content of at least five percent with the balance having at least some zinc, manganese and silicon.
Claim 5
Dependent Claim 44 words
The vehicle steering wheel armature of claim 2 wherein the other of said planes of said arms have openings to receive an instrument control and said arms have retaining means to hold an air bag package in the center portion thereof over said hub.
Claim 6
Dependent Claim 76 words
A vehicle steering wheel armature, comprising: a. a steel hub adapted to be axially secured to a steering shaft; and b. a one piece magnesium rim and rim support about and supported by said steel hub; i. said rim being generally circular and adapted to be grasped by the hand; and ii. said rim having an upper and a lower portion, the radius of the upper portion being less than the radius of the lower portion.
Claim 7
Dependent Claim 76 words
A vehicle steering wheel armature, comprising: a. a steel hub adapted to be axially secured to a steering shaft; and b. a one piece magnesium rim and rim support about and supported by said steel hub; i. said rim being generally circular and adapted to be grasped by the hand; and ii. said rim having an upper and a lower portion, the radius of the upper portion being less than the radius of the lower portion.

References Cited (Backward Citations)

US1056873A Cited
US1220878A Cited
US1713035A Cited
US2863015A Cited
US2818749A Cited
US3671056A Cited
US3726672A Cited
US3856360A Cited
US4662238A Cited
GB2058694A Cited
US4421193A Cited
US4426951A Cited
US4462961A Cited
US4527839A Cited
US4664644A Cited
US4921267A Cited
US4714588A Cited
US4741223A Cited
US4702527A Cited
US4631976A Cited
US4920821A Cited
US4590340A Cited
US4645223A Cited
US4946647A Cited
US4892006A Cited
US5085097A Cited
US4975235A Cited
US4770850A Cited
US4962947A Cited
US5070742A Cited
US4898429A Cited
US4920822A Cited
US5040646A Cited
US5097720A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-09-13 1997-03-15 1997-09-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-09-13 2001-03-15 2001-09-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-09-13 2005-03-15 2005-09-14 $7700.00 Window Closed / Lapsed

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