Patent US3624786A successfully refreshed from Google Patents.
US3624786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel suspension
Assignee: Hay and Forage Industries
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Filing: 1969-11-14
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Granted: 1971-11-30
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Expires: 1989-11-14
Abstract
Abstract A tilt bed vehicle is supported by both a chassis and a separate wheeled undercarriage, all interconnected such that the undercarriage is moved forwardly of the bed as the latter is tilted. The undercarriage includes a pair of wheeled trucks which swing about horizontal and vertical axes, each trunk including a front, a rear, and an intermediate wheel and axle assembly with the intermediate assembly pivotally mounted for swinging movement about an axis extending fore and aft of the vehicle.
Inventors
- 👤 Ezra Cordell Lundahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:04
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
In a vehicle: an elongated bed; a chassis and an undercarriage underlying the bed in supporting relationship thereto; pivot means interconnecting the chassis and the bed for swinging movement of the latter about a first generally horizontal axis, said undercarriage having a coupling mounted thereon for swinging movement about a second generally horizontal axis; structure pivotally connecting the bed with said coupling for reciprocable movement of the latter toward and away from the chassis; power means interconnecting the chassis and the bed for swinging the latter about said first axis; and mechanism interconnecting the chassis, the bed and said coupling for reciprocating the latter and swinging the same about said second axis in response to swinging of the bed.
Claim 2
Dependent Claim
119 words
In a vehicle: an elongated bed; a chassis and an undercarriage underlying the bed in supporting relationship thereto; pivot means interconnecting the chassis and the bed for swinging movement of the latter about a first generally horizontal axis, said undercarriage having a coupling mounted thereon for swinging movement about a second generally horizontal axis; structure pivotally connecting the bed with said coupling for reciprocable movement of the latter toward and away from the chassis; power means interconnecting the chassis and the bed for swinging the latter about said first axis; and mechanism interconnecting the chassis, the bed and said coupling for reciprocating the latter and swinging the same about said second axis in response to swinging of the bed.
Claim 3
Dependent Claim
88 words
The invention of claim 1, said mechanism including a pulley-cable assembly having a first pulley secured to the chassis and a second pulley secured to the bed for movement with the latter toward and away from the first pulley during swinging of the bed, the cable of said assembly being secured to said coupling whereby movement of the second pulley toward the first pulley shifts the undercarriage in one direction and movement of the second pulley away from the first pulley shifts the undercarriage in the opposite direction.
Claim 4
Dependent Claim
46 words
The invention of claim 1, said chassis having a hitch at the noRmally forwardmost end thereof adapted for coupling with a towing unit, said pivot means being at the opposite end of the chassis, intermediate the ends of the bed interposed between the bed and chassis.
Claim 5
Dependent Claim
35 words
The invention of claim 1, said coupling including a crosshead interposed between the bed and the undercarriage, said bed being provided with track means therebeneath slidably receiving said crosshead for movement longitudinally of the bed.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |