US3602375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piggyback load handling crane
Assignee: Bank of New England NA
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Filing: 1969-02-10
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Granted: 1971-08-31
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Expires: 1989-02-10
Abstract
Abstract A crane for transferring a semitrailer, cargo container, or other piggyback load from the road to a rail car, and vice versa, is equipped with parallel horizontal tracks and a load suspension system which is shiftable bodily back and forth on the tracks between the road side and the rail side of the crane. T load suspension system comprises a pair of back and forth movable carriages on the tracts, a load supporting truss between the carriages, and lift arms pivoted on the opposite ends of the truss and bearing at their free ends upon the carriages.
Inventors
- 👤 Edwin O Martinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:34
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/64; B60P1/6418; B60P1/6445; B65; B65G; B65G63/00; B65G63/04; B65G63/042; B65G63/045
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
323 words
A crane adapted to laterally transfer a load from one side of the crane to the other, said crane comprising: a mobile chassis having longitudinal ends; a pair of generally T-shaped supports each having a vertical post assembly with a horizontal crossbeam fixed adjacent the upper end of said vertical post assembly; first and second mounting means for mounting the lower ends of said post assemblies in an upstanding position adjacent said chassis ends in a spaced, generally parallel relation to each other with said crossbeams extending traversely of the longitudinal axis of said chassis, one of said mounting means including pivotal means for pivotally mounting one of said Tshaped supports on one of said chassis ends; a motor means for moving one of said T-shaped supports about its pivot; an overhead assembly spanning said support comprising: first and second carriages operatively mounted, respectively, on each of said crossbeams for horizontal movement traversely of said chassis; a generally horizontally extending load carrying truss operatively connected to said carriages; first and second lift means operatively interposed, respectively, between said first carriage and one end of said truss in vertical and horizontal load transmitting relation to said first carriage and between said second carriage and the other end of said truss in vertical and horizontal load transmitting relation to said second carriage, said first and second lift means each comprising a lift arm, a hinge joint at one end of said lift arm and an articulated joint at the other end thereof; a power cylinder connected between said truss and lift arm to provide up and down movement to said truss, articulated hinge joints connecting said lift arm with opposite ends, respectively, of said truss in up and down swingable relation thereto, and said articulated joints being associated, respectively, with said first and second carriages and operative to accommodate up and down movement and horizontal angular displacement of said lift arms relative to said carriages.
Claim 2
Dependent Claim
323 words
A crane adapted to laterally transfer a load from one side of the crane to the other, said crane comprising: a mobile chassis having longitudinal ends; a pair of generally T-shaped supports each having a vertical post assembly with a horizontal crossbeam fixed adjacent the upper end of said vertical post assembly; first and second mounting means for mounting the lower ends of said post assemblies in an upstanding position adjacent said chassis ends in a spaced, generally parallel relation to each other with said crossbeams extending traversely of the longitudinal axis of said chassis, one of said mounting means including pivotal means for pivotally mounting one of said Tshaped supports on one of said chassis ends; a motor means for moving one of said T-shaped supports about its pivot; an overhead assembly spanning said support comprising: first and second carriages operatively mounted, respectively, on each of said crossbeams for horizontal movement traversely of said chassis; a generally horizontally extending load carrying truss operatively connected to said carriages; first and second lift means operatively interposed, respectively, between said first carriage and one end of said truss in vertical and horizontal load transmitting relation to said first carriage and between said second carriage and the other end of said truss in vertical and horizontal load transmitting relation to said second carriage, said first and second lift means each comprising a lift arm, a hinge joint at one end of said lift arm and an articulated joint at the other end thereof; a power cylinder connected between said truss and lift arm to provide up and down movement to said truss, articulated hinge joints connecting said lift arm with opposite ends, respectively, of said truss in up and down swingable relation thereto, and said articulated joints being associated, respectively, with said first and second carriages and operative to accommodate up and down movement and horizontal angular displacement of said lift arms relative to said carriages.
Claim 3
Dependent Claim
59 words
A crane according to claim 1 further comprising a pair of counterweights mounted, respectively, on said supports for back and forth movements traversely of said chassis, and power transmitting means operatively connecting said counterweights, respectively, with said carriages so that movement of said carriages in one direction causes movemenT of said counterweights in the opposite direction, and vice versa.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |