US3672526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Front and side loading attachment for lifting trucks
Assignee: Doosan Bobcat North America Inc
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Filing: 1970-08-06
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Granted: 1972-06-27
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Expires: 1990-08-06
Abstract
Abstract A front and side loader attachment for lift trucks with an upright in which the fork section is connected to the upright by a member movable angularly in a horizontal plane from one side of the carriage to the other side. The member is pivoted at one end on a line substantially in the longitudinal center of the carriage, and the fork section is movable to and from lateral positions on a line perpendicular to the longitudinal center line and is adapted to be skewed to various angles between the two lateral positions. A load distributing system is preferably incorporated in the carriage consisting generally of spaced racks mounted on the upright and one or more shafts with pinions meshing with the racks.
Inventors
- 👤 Howard C Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:59
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/14; B66F9/147
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
193 words
A front and side loading attachment for a lift truck having an upright, comprising a carriage having a vertical section connected to the upright and a horizontal section connected to said vertical section and projecting forwardly therefrom, a means on said horizontal section having right angle intersecting X and Y axes with the Y axis positioned longitudinally with the truck, a straight track means on one of said axes, an arcuate track means having a radius the center of which is at the intersection of said axes, a crosshead on the straight track means of said one axis, a crosshead on said arcuate track means, an elongated link having a forward end and being connected at its rearward end to said first crosshead and connected at its longitudinal center to the second crosshead, means for moving said second crosshead along said arcuate track means and indirectly moving said first crosshead along said straight track means, a fork section pivotally connected on a vertical axis to the forward end of said link, and means for skewing the fork section on said vertical axis from one side of the carriage to the other side thereof.
Claim 2
Dependent Claim
193 words
A front and side loading attachment for a lift truck having an upright, comprising a carriage having a vertical section connected to the upright and a horizontal section connected to said vertical section and projecting forwardly therefrom, a means on said horizontal section having right angle intersecting X and Y axes with the Y axis positioned longitudinally with the truck, a straight track means on one of said axes, an arcuate track means having a radius the center of which is at the intersection of said axes, a crosshead on the straight track means of said one axis, a crosshead on said arcuate track means, an elongated link having a forward end and being connected at its rearward end to said first crosshead and connected at its longitudinal center to the second crosshead, means for moving said second crosshead along said arcuate track means and indirectly moving said first crosshead along said straight track means, a fork section pivotally connected on a vertical axis to the forward end of said link, and means for skewing the fork section on said vertical axis from one side of the carriage to the other side thereof.
Claim 3
Dependent Claim
26 words
A front and side loader attachment for a lift truck as defined in claim 1 in which said straight track means is on said Y axis.
Claim 4
Dependent Claim
49 words
A front and side loader attachment for a lift truck as defined in claim 1 in which a motor mounted on said horizontal section drives said second crosshead along said arcuate track to move the forward end of said link from one side of the carriage to the other.
Claim 5
Dependent Claim
41 words
A front and side loader attachment for a lift truck as defined in claim 3 in which said motor means and said second crosshead are interconnected by a chain to drive said crosshead in either direction in said arcuate track means.
Claim 6
Dependent Claim
55 words
A front and side loader attachment for a lift truck as defined in claim 4 in which the vertical axis on the link on which said fork section is pivotally connected is a vertical shaft and a chain is mounted on said link for retaining said shaft in a fixed position relative to the carriage.
Claim 7
Dependent Claim
82 words
A front and side loader attachment for a lift truck as defined in claim 1 in which said straight track means and said arcuate track means consist of slots in said horizontal section, and in which said crossheads are disposed in the respective slots, and a motor mounted on said horizontal section drives the crosshead in said arcuate track means, and in which a chain interconnects said motor and the crosshead in said arcuate track means and moves in said arcuate slot.
Claim 8
Dependent Claim
44 words
A front and side loader attachment for a lift truck as defined in claim 1 in which said carriage has a load distributing system including a pair of laterally spaced racks mounted on said upright and interconnecting shaft and pinions meshing with said racks.
Claim 9
Dependent Claim
47 words
A front and side loader attachment for a lift truck as defined in claim 6 in which said carriage includes a load distributing system having a pair of laterally spaced racks mounted on said upright and a plurality of interconnecting shafts and pinions meshing with said racks.
Claim 10
Dependent Claim
44 words
A front and side loader attachment for a lift truck as defined in claim 1 in which said fork section includes a fork frame and a motor means for raising and lowering said fork frame relative to said fork section and the horizontal section.
Claim 11
Dependent Claim
97 words
A front and side loading attachment for lift trucks having an upright, comprising a carriage having a vertical section connected to the upright and a forwardly extending, laterally movable horizontal section, a means connected to said vertical section and supporting said horizontal section and having a slidable pivot means retained substantially on the longitudinal center line of said carriage, a pivot means mounted on said forward end of said horizontal section, and a load supporting section journalled on said pivot means and being movable angularly to face to the front and to either side of the carriage.
Claim 12
Dependent Claim
97 words
A front and side loading attachment for lift trucks having an upright, comprising a carriage having a vertical section connected to the upright and a forwardly extending, laterally movable horizontal section, a means connected to said vertical section and supporting said horizontal section and having a slidable pivot means retained substantially on the longitudinal center line of said carriage, a pivot means mounted on said forward end of said horizontal section, and a load supporting section journalled on said pivot means and being movable angularly to face to the front and to either side of the carriage.
Claim 13
Dependent Claim
37 words
A front and side loader attachment for lift trucks as defined in claim 10 in which the forward end of said horizontal section moves on a straight line perpendicular to the center line of the lift truck.
Claim 14
Dependent Claim
49 words
A front and side loader attachment for lift trucks as defined in claim 10 in which said pivot means consists of a shaft mounted on the forward end of said horizontal section, and a motor is connected to said shaft for skewing the fork section about said pivot means.
Claim 15
Dependent Claim
44 words
A front and side loader attachment for a lift truck as defined in claim 10 in which said carriage includes a load distributing system having a pair of laterally spaced racks mounted on said upright and interconnecting shaft and pinions meshing with said racks.
Claim 16
Dependent Claim
48 words
A front and side loader attachment for a lift truck as defined in claim 12 in which said carriage includes a load distributing system having a pair of laterally spaced racks mounted on said upright and including a plurality of interconnecting shafts and pinions meshing with said racks.
Claim 17
Dependent Claim
106 words
A front and side loading attachment for lift trucks, comprising a carriage, a member mounted on said carriage and having at one end a slidable pivot means movable on a line substantially on the longitudinal center of said carriage, the other end of said member being movable from side to side substantially the full width of said carriage and on a line perpendicular to said first mentioned line, a fork section pivoted to the member at said other end and being movable with said member on said perpendicular line and movable angularly in a horizontal plane from one side of the carriage to the other side.
Claim 18
Dependent Claim
106 words
A front and side loading attachment for lift trucks, comprising a carriage, a member mounted on said carriage and having at one end a slidable pivot means movable on a line substantially on the longitudinal center of said carriage, the other end of said member being movable from side to side substantially the full width of said carriage and on a line perpendicular to said first mentioned line, a fork section pivoted to the member at said other end and being movable with said member on said perpendicular line and movable angularly in a horizontal plane from one side of the carriage to the other side.
Claim 19
Dependent Claim
57 words
A front and side loader attachment for lift trucks as defined in claim 15 in which a motor means is mounted on said carriage for moving said other end from one side of said carriage to the other side thereof and thereby moving said fork section from one side of the carriage to the other side thereof.
Claim 20
Dependent Claim
42 words
A front and side loader attachment for lift trucks as defined in claim 15 in which a motor means is connected to the pivot of said fork section for moving said fork section between forward position and to either lateral side position.
Claim 21
Dependent Claim
44 words
A front and side loader attachment for a lift truck as defined in claim 15 in which said carriage includes a load distributing system having a pair of laterally spaced racks mounted on said upright and interconnecting shaft and pinions meshing with said racks.
Claim 22
Dependent Claim
48 words
A front and side loader attachment for a lift truck as defined in claim 17 in which said carriage includes a load distributing system having a pair of laterally spaced racks mounted on said upright and including a plurality of interconnecting shaft and pinions meshing with said racks.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |