US3680720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track laying equipment and carrier therefor
Assignee: Individual
•
Filing: 1970-01-14
•
Granted: 1972-08-01
•
Expires: 1990-01-14
Abstract
Abstract A system for over-the-road hauling of track laying equipment, such as cranes, wherein hoist and/or counterweight components of the equipment are used to elevate the tracks away from ground contact for suspension between a wheeled trailer and a conventional tractor. While the equipment is suspended, the tracks may be retracted to minimize the over-the-road width, or tracks of increased ground contacting area may be laterally extended for improved stability and/or maneuverability at times of use.
Inventors
- 👤 Lyle H Strange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:17
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C23/78; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0378
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
An over-the-road and highway transporting system for moving a frame supported crane type unit having a powered hoist component in addition to the propulsion system thereof using fifth wheel equipped over-the-road tractors as a motive power source comprising a carrier attachment, a carrier frame for said carrier, an axle and road wheel components on said carrier frame, a pivot element on said carrier frame, a frame extension disposed outwardly from said pivot and cooperative with said crane and carrier frames for selectively attaching said frames together, means for selectively interconnecting the force exerting hoist component of said crane unit for moving at least one of said frame elements about said pivot for changing the above ground elevation of said carrier frame to raise the propulsion system of said crane equipment above and away from ground or other restraining contact, lock means for holding said carrier frame, frame extension and crane frame in the raised configuration, and means providing a fifth wheel hitch for said crane unit for engagement with the fifth wheel of said over-the-road tractors.
Claim 2
Dependent Claim
176 words
An over-the-road and highway transporting system for moving a frame supported crane type unit having a powered hoist component in addition to the propulsion system thereof using fifth wheel equipped over-the-road tractors as a motive power source comprising a carrier attachment, a carrier frame for said carrier, an axle and road wheel components on said carrier frame, a pivot element on said carrier frame, a frame extension disposed outwardly from said pivot and cooperative with said crane and carrier frames for selectively attaching said frames together, means for selectively interconnecting the force exerting hoist component of said crane unit for moving at least one of said frame elements about said pivot for changing the above ground elevation of said carrier frame to raise the propulsion system of said crane equipment above and away from ground or other restraining contact, lock means for holding said carrier frame, frame extension and crane frame in the raised configuration, and means providing a fifth wheel hitch for said crane unit for engagement with the fifth wheel of said over-the-road tractors.
Claim 3
Dependent Claim
64 words
Structure as set forth in claim 1 wherein said pivot element pivotally joins said frame extension to said carrier frame and the hoist component of said crane unit is engaged to said carrier frame in position away from said pivot for raising the carrier frame to an elevated position whereby the crane unit is disposed above and away from ground or other restraining contact.
Claim 4
Dependent Claim
85 words
The system as set forth in claim 1 and further comprising a pivotally mounted counterweight for said crane unit, power means for moving said counterweight to a lowered and extended position for increasing the moment thereof whereby the load handling capacity of said crane is changed, and wherein said fifth wheel hitch is disposed on said counterweight with the counterweight moving power means being used additionally to raise the propulsion system of the crane unit above the supporting ground as the counterweight is forcibly lowered.
Claim 5
Dependent Claim
34 words
The system as set forth in claim 3 and further comprising shock absorber means operatively disposed between said fifth wheel and crane unit for minimizing the transmission of road shocks to said crane unit.
Claim 6
Dependent Claim
20 words
The system as set forth in claim 4 wherein a hydraulic system provides said shock absorber and counterweight power means.
References Cited (Backward Citations)
CA458515A
Cited
US3013683A
Cited
US3037571A
Cited
GB1003359A
Cited
US3169650A
Cited
US3321215A
Cited
US3266636A
Cited
US3336041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |