US3804467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Front axle
Assignee: Lear Siegler Inc
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Filing: 1972-07-20
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Granted: 1974-04-16
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Expires: 1992-07-20
Abstract
Abstract A front axle and the method of making same wherein the axle includes a central portion with a square cross section and wing end portions extending upwardly and outwardly from the central portion and having changing cross sections which change from the square cross section adjacent the central portion to a wing cross section having two elongated sides interconnected by two ends, at one of which is arcuate. In one embodiment, the wing cross section is oval and in another embodiment the wing cross section has converging sides. The wing portions taper toward the distal ends thereof and a king pin support hub is integral with and disposed at the distal end of each wing portion. The axle is made from a tubular member by forming the central portion of the tubular member into a square cross section by successively reducing the diameter of the end portions of the tube and gathering the end portions of the tube by shortening same to increase the wall thicknesses thereof and flattening the sides of the end portions to obtain the wing cross section and a terminal length which is substantially solid and of a rectangular cross section to define a king pin support hub.
Inventors
- 👤 J Austermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:48
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/06; B21K1/12; B21K1/063; B60; B60B; B60B35/00; B60B35/02; B60B35/06; B60G; B60G2204/00; B60G2204/40; B60G2204/43; B60G2204/4306; B60G2206/00; B60G2206/01; B60G2206/30; B60G2206/312; B60G2206/32; B60G2206/80; B60G2206/82; B60G2206/8201
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
A front axle including: a central portion with a generally four sided cross section; a wing portion at each end of said central portion; each wing portion changing in cross section from said four sided cross section to a wing cross section having two elongated sides interconnected by two ends, at least one of which is arcuate, in the direction toward the distal end thereof; the wall thickness of each wing portion increasing therealong in said direction; the walls of each wing portion tapering toward one another in said direction; said central portion being generally square in cross section; each wing portion extending upwardly and outwardly from said central portion toward said distal end; said two sides of said wing cross section converging toward one another; a bend in said axle between said central portion and said wing portion, and wherein said wing cross section in the initial portion of said bend includes one end which is arcuate with the other end generally flat, and which wIng cross section in said direction through said bend changes to one wherein both of said ends are arcuate.
Claim 2
Dependent Claim
185 words
A front axle including: a central portion with a generally four sided cross section; a wing portion at each end of said central portion; each wing portion changing in cross section from said four sided cross section to a wing cross section having two elongated sides interconnected by two ends, at least one of which is arcuate, in the direction toward the distal end thereof; the wall thickness of each wing portion increasing therealong in said direction; the walls of each wing portion tapering toward one another in said direction; said central portion being generally square in cross section; each wing portion extending upwardly and outwardly from said central portion toward said distal end; said two sides of said wing cross section converging toward one another; a bend in said axle between said central portion and said wing portion, and wherein said wing cross section in the initial portion of said bend includes one end which is arcuate with the other end generally flat, and which wIng cross section in said direction through said bend changes to one wherein both of said ends are arcuate.
Claim 3
Dependent Claim
33 words
An axle as set forth in claim 1 wherein said ends of said wing cross section which are arcuate have different radii with the smallest radius being on the inside of said bend.
Claim 4
Dependent Claim
26 words
An axle as set forth in claim 1 including a king pin support hub integral with and disposed at the distal end of each wing portion.
Claim 5
Dependent Claim
20 words
An axle as set forth in claim 1 including a pair of spaced spring pads secured to said central portion.
Claim 6
Dependent Claim
38 words
An axle as set forth in claim 4 wherein each spring pad comprises a plate with side sections bent at least partially around said axle and a central section therebetween having bent ends disposed outwardly of said axle.
Claim 7
Dependent Claim
124 words
A front axle including: a central portion with a hollow, generally four-sided cross-section; a wing section extending from each end of said central portion having a hollow cross-section that decreases toward its outer ends and changes from the four-sided cross-section of the central portion; the cross-section of each wing section at least in the transition zone adjacent the central portion having an upper arcuate end and a lower end joined by two straight sides, the radius of curvature of said upper arcuate end being such that the straight sides converge toward the upper arcuate end from the lower end such that the upper arcuate end provides increased resistance to deflection caused by forces tending to bend the wing section upwardly about the central portion.
Claim 8
Dependent Claim
124 words
A front axle including: a central portion with a hollow, generally four-sided cross-section; a wing section extending from each end of said central portion having a hollow cross-section that decreases toward its outer ends and changes from the four-sided cross-section of the central portion; the cross-section of each wing section at least in the transition zone adjacent the central portion having an upper arcuate end and a lower end joined by two straight sides, the radius of curvature of said upper arcuate end being such that the straight sides converge toward the upper arcuate end from the lower end such that the upper arcuate end provides increased resistance to deflection caused by forces tending to bend the wing section upwardly about the central portion.
Claim 9
Dependent Claim
58 words
A front axle as claimed in claim 6 wherein said lower end progressively changes in contour in the transition zone from a generally flat contour joined to the lower ends of said upwardly converging sides by curved sections to an arcuate contour having a radius of curvature larger than the radius of curvatures of said upper arcuate end.
References Cited (Backward Citations)
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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) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |