Patent US3762337A successfully refreshed from Google Patents.
US3762337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railed vehicle-carrier system
Assignee: Dresser Industries Inc
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Filing: 1971-07-19
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Granted: 1973-10-02
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Expires: 1991-07-19
Abstract
Abstract A railroad dolly and truck equipped to have its front wheels supported upon the dolly off the ground and its rear wheels partially supported by the dolly with sufficient contact with the ground to power and brake the dolly. The truck is equipped with a hydraulic lift suspended from the front undercarriage and a similar lift suspended from the rear undercarriage. The lift has a wegde-shaped member mounted at the free end of the lift. The dolly includes a front dolly section and a rear dolly section. The sections are flexibly linked to each other and have railroad wheels adapted to ride conventional rails. Each section has a trough mounted on its frame. The trough is vee-shaped and mates with the lift wedge. The front lift centers within the front dolly trough and raises the truck tires off the ground. The rear lift centers within the rear dolly trough and raises the truck partially or completely off the ground. The truck is equipped with signalling devices to fix its proper location over the dolly before mounting the dolly in a hydraulic system to supply the power to the lift necessary to raise the truck. Hooks are provided underneath the truck to grip the dolly during transportation between rail locations. Each dolly has its own braking system.
Inventors
- 👤 Keon J Mc
- 👤 L Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:24
CPC Classifications
B; B60; B60F; B60F1/00; B60F1/04; B60F1/043; B61; B61C; B61C11/00; B61C11/005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
126 words
In combination: a carrier assembly having front and rear flanged wheels adapted to be mounted upon rails for transportation thereon, said assembly adapted to support a motor vehicle; a motor vehicle having front and rear pneumatic tired wheels, said vehicle rotatably supportable upon the carrier assembly with the front tired wheels raised off the ground and the rear tired wheels raised off the ground and the rear tired wheels supported partially on the ground and partially on the carrier, the carrier being detachable from the motor vehicle; means for lifting and lowering the front tired wheels and for rotatably supporting the vehicle upon the carrier assembly; and means for lifting and lowering the rear tired wheels and for rotatably supporting the vehicle upon the carrier assembly.
Claim 2
Dependent Claim
126 words
In combination: a carrier assembly having front and rear flanged wheels adapted to be mounted upon rails for transportation thereon, said assembly adapted to support a motor vehicle; a motor vehicle having front and rear pneumatic tired wheels, said vehicle rotatably supportable upon the carrier assembly with the front tired wheels raised off the ground and the rear tired wheels raised off the ground and the rear tired wheels supported partially on the ground and partially on the carrier, the carrier being detachable from the motor vehicle; means for lifting and lowering the front tired wheels and for rotatably supporting the vehicle upon the carrier assembly; and means for lifting and lowering the rear tired wheels and for rotatably supporting the vehicle upon the carrier assembly.
Claim 3
Dependent Claim
79 words
A combination as recited in claim 1 wherein the means for lifting and lowering the front tired wheels comprises: a first hydraulic lift cylinder having a rotatable, extensible piston; a first substantially vee-shaped wedge mounted on one end of the piston; a first vee-shaped trough adapted to receive the wedge upon extension of the piston and to nest the wedge on its internal surfaces; and means for operating the first hydraulic lift cylinder and extending and withdrawing the piston.
Claim 4
Dependent Claim
85 words
A combination as recited in claim 2 wherein the means for lifting and lowering the rear tired wheels comprises: a second hydraulic lift cylinder having a rotatablE extensible piston; a second substantially vee-shaped wedge mounted on one end of the second lift cylinder piston; a second vee-shaped trough adapted to receive the second wedge upon extension of the second piston and to nest the wedge on its internal surfaces; and means for operating the second hydraulic lift cylinder and extending and withdrawing the second piston.
Claim 5
Dependent Claim
39 words
A combination as recited in claim 3 wherein the carrier assembly comprises: a front carrier having the front flanged wheels; a rear carrier having the rear flanged wheels; and flexible linkage connecting the front carrier and the rear carrier.
Claim 6
Dependent Claim
87 words
A combination as recited in claim 4 wherein: the first hydraulic lift cylinder is mounted on the front carrier at the approximate center; the first trough is mounted on the frame of the motor vehicle at the approximate front and center and above the first hydraulic cylinder; the second hydraulic lift cylinder is mounted on the rear carrier at the approximate center; and the second trough is mounted on the frame of the motor vehicle at the approximate rear and center and above the second hydraulic cylinder.
Claim 7
Dependent Claim
83 words
A combination as recited in claim 4 wherein: the first hydraulic lift cylinder is mounted on the frame of the motor vehicle at the approximate front and center; the first trough is mounted in the center of the carrier below the hydraulic lift cylinder; the second hydraulic lift cylinder is mounted on the frame of the motor vehicle at the approximate rear and center; and the second trough is mounted in the center of the rear carrier below the second hydraulic lift cylinder.
Claim 8
Dependent Claim
45 words
A combination as recited in claim 6 and further comprising: means to grip the carrier assembly to the underside of the motor vehicle for transportation therewith; and means to release the carrier assembly from the underside of the motor vehicle for placement on the rails.
Claim 9
Dependent Claim
25 words
A combination as recited in claim 7 and further comprising: means for detecting the location of the first hydraulic lift cylinder over the first trough.
Claim 10
Dependent Claim
25 words
A combination as recited in claim 8, and further comprising: means for detecting the location of the second hydraulic lift cylinder over the second trough.
Claim 11
Dependent Claim
33 words
A combination as recited in claim 9, and further comprising: means for signalling the operator of the motor vehicle of detected location of the first lift cylinder and of the second lift cylinder.
Claim 12
Dependent Claim
85 words
A combination as recited in claim 10 and further comprising; front brakes mounted upon the front carrier to prevent rotation of carrier wheels when the wedge is not nesting in the first trough and to allow rotation when the wedge is nesting in the first trough; and rear brakes mounted upon the rear carrier to prevent rotation of the rear carrier wheels when the wedge is not nesting in the second trough and to allow rotation when the wedge is nesting in the second trough.
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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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |