US3598264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel bar linkage load transfer apparatus
Assignee: Individual
•
Filing: 1969-03-27
•
Granted: 1971-08-10
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Expires: 1989-03-27
Abstract
Abstract The invention is an apparatus or equipment adapted particularly for transferring palletized loads to and from warehouse storage racks. The equipment is provided with forks like a fork lift which are swingable between two positions to adapt the equipment for loading and unloading laterally to and from either side of the equipment to eliminate the need of turning the transporter equipment in an aisle. The load support means for the fork members is suspended like a pendulum by means of parallel bar linkage frames whereby the load can be translated horizontally at the same level. Intermeshing gears with hydraulic drive means are provided for deforming or warping the suspension frames and to effect the lateral transfer of the load.
Inventors
- 👤 Philip E Massie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:47
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/14; B66F9/16; Y; Y10; Y10S; Y10S414/00; Y10S414/13
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
A load transfer device comprising a vehicle support means mounted on said vehicle, a pair of first sets of parallel bar linkages forming spaced frames each frame having a pair of moving centers and being pivotally supported at spaced points on said support means, a second pair of sets of parallel bar linkages forming second spaced frames means for pivotally attaching said second pair of frames, to the first sets of frames at said centers spaced from the supporting means, a load support carried by the second sets of frames in a position between the first and second pair of frames, gear means having centers coinciding with said aforesaid centers and intermeshing with each other, and means for applying torque to intermeshing gear members whereby to cause the first and second pair of frames to pivot in a manner whereby to transfer said load support laterally-relative to said support.
Claim 2
Dependent Claim
149 words
A load transfer device comprising a vehicle support means mounted on said vehicle, a pair of first sets of parallel bar linkages forming spaced frames each frame having a pair of moving centers and being pivotally supported at spaced points on said support means, a second pair of sets of parallel bar linkages forming second spaced frames means for pivotally attaching said second pair of frames, to the first sets of frames at said centers spaced from the supporting means, a load support carried by the second sets of frames in a position between the first and second pair of frames, gear means having centers coinciding with said aforesaid centers and intermeshing with each other, and means for applying torque to intermeshing gear members whereby to cause the first and second pair of frames to pivot in a manner whereby to transfer said load support laterally-relative to said support.
Claim 3
Dependent Claim
58 words
A device as in claim 1 wherein said second set of frames has corners pivot shafts pivotally attaching said corners to corners of frames of said first set, said torque applying means comprising intermeshing gears centered at the axes of said shafts and each gear having attachment to a link of a frame for applying torque to it.
Claim 4
Dependent Claim
18 words
A device as in claim 1, comprising fork lift means having spaced forks supported by the load support.
Claim 5
Dependent Claim
55 words
A device as in claim 3, wherein the fork lift members comprise right angular members each having two forks which are normal to each other and means for supporting the fork members whereby they can be rotated through 90* so that a pair of forks can extend in either opposite directions from the support means.
Claim 6
Dependent Claim
15 words
A device as in claim 4, including means for laterally translating the fork lift members.
Claim 7
Dependent Claim
52 words
A device as in claim 5, including four-bar linkage means having moving centers connected between the fork lift members and the support means for simultaneously bringing about rotation of the fork lift members through the 90* while at the same time translating the said members laterally by movement of said moving centers.
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |