Patent US3777898A successfully refreshed from Google Patents.
US3777898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction and steering device
Assignee: Individual
•
Filing: 1971-10-08
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Granted: 1973-12-11
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Expires: 1991-10-08
Abstract
Abstract A traction and steering device comprising of a chassis, a rotatable platform pivotably mounted on the chassis, a front axle and a drive and steering unit connected to the rotatable platform, a rear axle connected to the chassis and lowerable stabilizing arms which are connected to the chassis and operate to lift the device above the ground. The front axle is used to drive and steer the vehicle whereas the rear axle is used merely as a load bearing axle.
Inventors
- 👤 M Gallay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:22
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A traction and steering device comprising a chassis, a rotatable platform pivotally mounted on the chassis and having a drive unit and front and rear axles, characterized in that the drive unit and front axle are mounted on the rotatable platform, the rear axle is mounted on the chassis and control means is provided for locking the rotatable platform with the front and rear axles in parallel relationship and for controlling the rotation of the platform with respect to the chassis.
Claim 2
Dependent Claim
81 words
A traction and steering device comprising a chassis, a rotatable platform pivotally mounted on the chassis and having a drive unit and front and rear axles, characterized in that the drive unit and front axle are mounted on the rotatable platform, the rear axle is mounted on the chassis and control means is provided for locking the rotatable platform with the front and rear axles in parallel relationship and for controlling the rotation of the platform with respect to the chassis.
Claim 3
Dependent Claim
81 words
A traction and steering device as claimed in claim 1 in which lowerable stabilizing arms are mounted on the chassis, a double-acting lifting jack is provided on each of said stabilizing arms and operating means is provided for the independent control of each of said lifting jacks whereby a single set of lifting jacks is operative to apply the stabilizing arms to the ground, simultaneously to lift the front and rear axles from the ground and horizontally to adjust the platform.
Claim 4
Dependent Claim
35 words
A traction and steering device as claimed in claim 2 in which driving and steering means are provided for simultaneously driving and steering the front axle, the rear axle being simply a load bearing member.
Claim 5
Dependent Claim
36 words
A traction and steering device as claimed in claim 2 in which driving and steering means are provided for simultaneously driving and steering the front axle, further driving means being provided for driving the rear axle.
Claim 6
Dependent Claim
107 words
A traction and steering device as claimed in claim 2 in which the driving unit and the front axle are mounted with driving and steering means for simultaneously driving and steering the front axle at a front side of the rotatable platform and frame means for supporting a foldable crane mast is mounted at a rear side of the rotatable platform, and a pivot point is mounted on the chassis and connected to the rotatable platform at a point located between the frame means and the driving and steering means whereby the drive unit and front axle constitute counterweights for the crane relative to the pivot point.
References Cited (Backward Citations)
US3357573A
Cited
US3603614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |