Patent US6397372B1 successfully refreshed from Google Patents.
Patent US3632129A successfully refreshed from Google Patents.
US3632129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tandem wagon axle assembly
Assignee: Individual
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Filing: 1969-09-29
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Granted: 1972-01-04
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Expires: 1989-09-29
Abstract
Abstract An axle assembly avoids lateral skidding of the tandem wheels of a vehicle when the vehicle is turning and includes an elongated beam upon which the wheels are rotatably mounted. The beam is rotatable relative to the centerline and body of the vehicle when the vehicle is turned and spring centering means is provided to return the beam to a position substantially perpendicular to the centerline of the vehicle.
Inventors
- 👤 Harold F Bear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:32
CPC Classifications
B; B62; B62D; B62D13/00; B60; B60G; B60G5/00; B60G5/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
A vehicle axle assembly for permitting relative movement between the wheels of the vehicle and the centerline of the vehicle when the vehicle is turning, said assembly comprising: an elongated beam having wheel mounting means for mounting a vehicle wheel at each end of said beam for rotation about an axis which is substantially parallel to the axis of said beam, pivotal mounting means rotatably mounting said beam to the body of the vehicle such that the axis of said beam and the centerline of the vehicle are angularly moveable relative to each other when said vehicle is turning, and spring centering means for urging said beam into a position in which the axis of the beam is substantially perpendicular to the centerline of the vehicle.
Claim 2
Dependent Claim
126 words
A vehicle axle assembly for permitting relative movement between the wheels of the vehicle and the centerline of the vehicle when the vehicle is turning, said assembly comprising: an elongated beam having wheel mounting means for mounting a vehicle wheel at each end of said beam for rotation about an axis which is substantially parallel to the axis of said beam, pivotal mounting means rotatably mounting said beam to the body of the vehicle such that the axis of said beam and the centerline of the vehicle are angularly moveable relative to each other when said vehicle is turning, and spring centering means for urging said beam into a position in which the axis of the beam is substantially perpendicular to the centerline of the vehicle.
Claim 3
Dependent Claim
51 words
The assembly of claim 1 including an elongated bolster to supportably mount the body of the vehicle upon said beam and extending substantially perpendicular to the centerline of the vehicle, said pivotal mounting means mounting said bolster and said beam for rotation relative to each other when the vehicle is turned.
Claim 4
Dependent Claim
20 words
The assembly of claim 1 including roller support means for rollably supporting the body of the vehicle upon said beam.
Claim 5
Dependent Claim
73 words
The assembly of claim 3 including an elongated bolster to supportably mount the body of the vehicle upon said beam, said pivotal mounting means mounting said bolster and said beam to each other intermediate their ends for rotation relative to each other, and said roller support means comprises a roller positioned between said bolster and said beam adjacent the ends thereof for rollably supporting said bolster on said beam during said relative rotation.
Claim 6
Dependent Claim
103 words
The assembly of claim 1 including a centerpole extending substantially parallel to the centerline of said vehicle and mounted on said beaM for movement relative to said beam in a plane substantially parallel to the plane of the axis of said beam, said spring centering means being connected at one end to said centerpole and at the other end to said beam and exerting a force in a direction substantially parallel to the axis of said beam such that said beam is rotatably urged toward a position in which the axes of the beam and the centerpole are substantially perpendicular to each other.
Claim 7
Dependent Claim
115 words
The assembly of claim 1 wherein said spring centering means comprises: a spring, a pair of flexible members each attached at one end to said spring and at their other ends to the ends of said beam, and a pair of rotatable means mounted stationary relative to the centerline of the vehicle, each of said flexible members being trained about one said rotatable means intermediate their length, whereby when the vehicle is turned one of said flexible members is slacked and a tension is drawn on the other of said flexible members and said spring for urging said beam toward said position in which the beam is substantially perpendicular to the centerline of the vehicle.
Claim 8
Dependent Claim
18 words
The assembly of claim 6 wherein said flexible members are chains and said rotatable means are toothed sprockets.
Claim 9
Dependent Claim
16 words
The assembly of claim 6 including spring means attached between said flexible members and said beam.
Claim 10
Dependent Claim
18 words
The assembly of claim 6 including means for individually adjusting the tension on each of said flexible members.
Claim 11
Dependent Claim
29 words
The assembly of claim 1 wherein said spring centering means is coupled to said beam for exerting a force on said beam to urge said beam into said position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |