US3874719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible load lifting frame
Assignee: Doosan Bobcat North America Inc
•
Filing: 1972-11-20
•
Granted: 1975-04-01
•
Expires: 1992-11-20
Abstract
Abstract A telescopic lifting frame or spreader for enaging, lifting and transporting freight containers by means of van carriers, lift trucks, and the like, having a longitudinal coaxial telescopic beam structure extensible the distance of about twice its collapsed length and having freight container corner casting engaging hooks which engage from the sides of the container. Opposed spreader beams are telescopical coaxially in and out of each other and are supported from and telescoped in a fixed center beam. When associated with a van carrier machine frames are provided for connecting the spreader to the side frames of the carrier for guided elevation relative thereto, as well as for guiding, skewing and side shifting of the spreader in the bay of the carrier and means compensating for carrier side frame deflection. In addition, positive locking means engages beam structure at various selectable lengths thereof, and an interior beam extension structure is connected to the opposed beam ends in a manner to provide a minimum collapsed length of the lifting frame or spreader for the maximum available extended length thereof.
Inventors
- 👤 Wynand M J M Goyarts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:06
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/62; B66C1/66; B66C1/663; B66C19/00; B66C19/007
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
253 words
A telescopic spreader frame for handling cargo containers of different lengths which have latch receiving receptacles in the upper corner portions thereof, comprising a hollow fixed outer center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam telescoped in the intermediate beam, said beams being substantially coaxial, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, an end beam secured adjacent the outer end of each of said intermediate and inner beams which extends laterally outwardly substantially equal distances in opposite directions from each of said intermediate and inner beams, latching means adjacent each end of each end beam for engaging the respective latch receiving receptacles of a cargo container, actuator means connected to each of said intermediate and inner beams for selectively extending and retracting the latter beams to engage the latching means of the end beams with a cargo container of any of a plurality of selected lengths, said actuator means comprising oppositely extending hydraulic cylinder means each bEing connected at its one end to a side of the center beam and at its opposite end to a respective lateral side portion of opposite ones of said end beams, transversely extending lifting beams mounted fixedly from opposite end portions of said fixed center beam, and lifting means connected to each lifting beam at opposite end portions thereof for elevating said spreader frame, said actuator cylinder means being located in the horizontal plane of said telescopic beams.
Claim 2
Dependent Claim
253 words
A telescopic spreader frame for handling cargo containers of different lengths which have latch receiving receptacles in the upper corner portions thereof, comprising a hollow fixed outer center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam telescoped in the intermediate beam, said beams being substantially coaxial, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, an end beam secured adjacent the outer end of each of said intermediate and inner beams which extends laterally outwardly substantially equal distances in opposite directions from each of said intermediate and inner beams, latching means adjacent each end of each end beam for engaging the respective latch receiving receptacles of a cargo container, actuator means connected to each of said intermediate and inner beams for selectively extending and retracting the latter beams to engage the latching means of the end beams with a cargo container of any of a plurality of selected lengths, said actuator means comprising oppositely extending hydraulic cylinder means each bEing connected at its one end to a side of the center beam and at its opposite end to a respective lateral side portion of opposite ones of said end beams, transversely extending lifting beams mounted fixedly from opposite end portions of said fixed center beam, and lifting means connected to each lifting beam at opposite end portions thereof for elevating said spreader frame, said actuator cylinder means being located in the horizontal plane of said telescopic beams.
Claim 3
Dependent Claim
49 words
A telescopic spreader frame as claimed in claim 1 wherein longitudinally spaced openings are provided in each the intermediate and inner beams, and selectively actuatable locking means mounted on the center beam for engaging selective ones of said openings for locking the spreader frame in a predetermined telescoped position.
Claim 4
Dependent Claim
74 words
A spreader frame as claimed in claim 1 wherein each end portion of each end beam is hollow and houses said latching means which includes a laterally inwardly directed hook means extending below the end beam and movable arcuately in a direction longitudinal of the end beam, said latch receiving receptacles having access openings in respective sides of the container for receiving said hook means, and means for thus actuating said hook means arcuately.
Claim 5
Dependent Claim
61 words
A spreader frame as claimed in claim 3 wherein each of said hook means is mounted for limited vertical movement as well as arcuate movement in relation to the respective beam end, such vertical movement being effected by abutment with a container receptacle during engagement with the access opening thereof, said access openings being variable in configuration in different cargo containers.
Claim 6
Dependent Claim
154 words
A spreader frame as claimed in claim 1 in combination with a cargo container handling vehicle comprising a horizontally extending U-shaped frame, a pair of transversely spaced hoist motor means mounted upon opposite legs of the U-shaped frame at each end portion thereof, lifting arch means connecting the motors of each such pair of hoist motor means above the U-shaped frame for elevation therewith, said spreader frame being connected to said lifting arch means and to said hoist motor means for elevation in the U-shaped frame, a transverse guide and skew frame connecting each end of the spreader frame to the side frames of the U-shaped frame for guiding vertical movement therein of the spreader frame, and transversely extending motor means connecting each guide and skew frame to the spreader frame such that the latter frame is side shiftable and rotatable to a limited degree in a substantially horizontal plane within the U-shaped frame.
Claim 7
Dependent Claim
54 words
A spreader frame as claimed in claim 5, wherein means are provided for operatively connecting the inner ends of the intermediate and inner beams for increasing the extensibility thereof by providing for a controlled separation of said inner ends to a predetermined axially spaced relation at full extension of the intermediate and inner beams.
Claim 8
Dependent Claim
102 words
A spreader frame as claimed in claim 1 wherein the spreader frame is elevatable between a pair of substantially parallel and longitudinally and vertically extending vehicular side frames by said lifting means and lifting beams, transverse guide and skew frame means connecting the spreader frame to said side frames for guiding vertical movement of the spreader frame in relation to the side frames, and transversely extending motor means connecting said guide and skew frame means to the spreader frame such that the latter frame is side shiftable and rotatable to a limited degree in a substantially horizontal plane between the side frames.
Claim 9
Dependent Claim
74 words
A spreader frame as claimed in claim 1 wherein actuator cylinder means are connected at their one ends to opposite side portions of the center beam and at their opposite ends to opposite lateral side portions of opposite ones of the end beams, said lifting beams being located at least partially in the horizontal plane of said center beam, and said actuator cylinder means being located in the horizonTal plane of said center beam.
Claim 10
Dependent Claim
26 words
A spreader frame as claimed in claim 8 wherein said actuator cylinder means extend above at least a portion of respective ones of said lifting beams.
Claim 11
Dependent Claim
26 words
A spreader frame as claimed in claim 8 wherein said actuator cylinder means extend below at least a portion of respective ones of said lifting beams.
Claim 12
Dependent Claim
21 words
A spreader frame as claimed in claim 8 wherein said actuator cylinder means extend through respective ones of said lifting beams.
Claim 13
Dependent Claim
46 words
A spreader frame as claimed in claim 1 wherein one of said actuator cylinder means extends above at least a portion of one of said lifting beams and the other actuator cylinder means extends below at least a portion of the other of said lifting beams.
Claim 14
Dependent Claim
207 words
A telescopic spreader frame for handling cargo containers of different lengths which have latch receiving receptacles in the upper corner portions thereof, comprising a hollow fixed outer center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam telescoped in the intermediate beam, said beams being substantially coaxial, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, an end beam secured adjacent the outer end of each of said intermediate and inner beams which extends laterally outwardly in opposite directions from each of said intermediate and inner beams, latching means adjacent each end of each end beam for engaging the respective latch receiving receptacles of a cargo container, actuator means connected to each of said intermediate and inner beams for selectively extending and retracting the latter beams to engage the latching means of the end beams with a cargo container of any one of a plurality of selected lengths, and means operatively connecting the inner ends of the intermediate and inner beams for increasing the controlled extensibility thereof by providing for a controlled separation of said inner ends to a predetermined axially spaced relation at full extension of the intermediate and inner beams.
Claim 15
Dependent Claim
207 words
A telescopic spreader frame for handling cargo containers of different lengths which have latch receiving receptacles in the upper corner portions thereof, comprising a hollow fixed outer center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam telescoped in the intermediate beam, said beams being substantially coaxial, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, an end beam secured adjacent the outer end of each of said intermediate and inner beams which extends laterally outwardly in opposite directions from each of said intermediate and inner beams, latching means adjacent each end of each end beam for engaging the respective latch receiving receptacles of a cargo container, actuator means connected to each of said intermediate and inner beams for selectively extending and retracting the latter beams to engage the latching means of the end beams with a cargo container of any one of a plurality of selected lengths, and means operatively connecting the inner ends of the intermediate and inner beams for increasing the controlled extensibility thereof by providing for a controlled separation of said inner ends to a predetermined axially spaced relation at full extension of the intermediate and inner beams.
Claim 16
Dependent Claim
89 words
A spreader frame as claimed in claim 13 wherein transversely extending lifting beams are mounted from opposite end portions of the center beam, and lifting means connected to each lifting beam for elevating said spreader frame, said actuator means including first and second actuators, the first of which is connected to the the center beam and to the intermediate beam through one of said lifting beams, and the second of which is connected to the center beam and to the inner beam through the other of said lifting beams.
Claim 17
Dependent Claim
257 words
In a van carrier vehicle having a horizontally extending U-shaped frame forming an open bay for embracing the load to be transported by the vehicle, a pair of transversely spaced hoist motors mounted upon opposite legs of the U-shaped frame in each end portion thereof, lifting arch means connecting the motors of each such pair of hoist motor means above the U-shaped frame for elevation therewith, a spreader frame embraced by the U-shaped frame and operatively connected to the lifting arch means for elevation therewith and with said hoist motor means and load lifting means depending from opposite end portions of the lifting frame, said spreader frame being movable downwardly with the lifting arch into a position atop container to be engaged wherein said lifting means are registrable in locking relation with upper portions of the container so that the container may be elevated within the U-shaped frame, a guide frame extending transversely through each end portion of the spreader frame and mounted in vertical guided relationship to the side frames of the U-shaped frame, and lost motion means connecting one side of each guide frame to the adjacent vehicle side frame such that lateral deflection of either vehicle side frame effects relative guided transverse movement between the said one side of the guide frame and the adjacent side frame, said lost motion means comprising shaft and sleeve means cOnnecting the one side of the guide frame to the one vehicle side frame, the sleeve and shaft being relatively axially movable to compensate for side frame deflection.
Claim 18
Dependent Claim
257 words
In a van carrier vehicle having a horizontally extending U-shaped frame forming an open bay for embracing the load to be transported by the vehicle, a pair of transversely spaced hoist motors mounted upon opposite legs of the U-shaped frame in each end portion thereof, lifting arch means connecting the motors of each such pair of hoist motor means above the U-shaped frame for elevation therewith, a spreader frame embraced by the U-shaped frame and operatively connected to the lifting arch means for elevation therewith and with said hoist motor means and load lifting means depending from opposite end portions of the lifting frame, said spreader frame being movable downwardly with the lifting arch into a position atop container to be engaged wherein said lifting means are registrable in locking relation with upper portions of the container so that the container may be elevated within the U-shaped frame, a guide frame extending transversely through each end portion of the spreader frame and mounted in vertical guided relationship to the side frames of the U-shaped frame, and lost motion means connecting one side of each guide frame to the adjacent vehicle side frame such that lateral deflection of either vehicle side frame effects relative guided transverse movement between the said one side of the guide frame and the adjacent side frame, said lost motion means comprising shaft and sleeve means cOnnecting the one side of the guide frame to the one vehicle side frame, the sleeve and shaft being relatively axially movable to compensate for side frame deflection.
Claim 19
Dependent Claim
91 words
Telescopic beam means comprising a hollow fixed outer center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam telescoped in the intermediate beam, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, actuator means for extending and retracting the intermediate and inner beams, and means operatively connecting the inner ends of the intermediate and inner beams for increasing extensibility of the beam assembly by permitting a controlled separation in an axial direction of said inner ends.
Claim 20
Dependent Claim
91 words
Telescopic beam means comprising a hollow fixed outer center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam telescoped in the intermediate beam, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, actuator means for extending and retracting the intermediate and inner beams, and means operatively connecting the inner ends of the intermediate and inner beams for increasing extensibility of the beam assembly by permitting a controlled separation in an axial direction of said inner ends.
Claim 21
Dependent Claim
63 words
Telescopic beam means as claimed in claim 16 wherein said last-mentioned means includes a beam end connected to one of the telescopic beams which is movable axially in relation to said one beam such that at full extension of the inner and intermediate beams said beam end is spaced axially from said one beam while engaging the inner end of the other beam.
Claim 22
Dependent Claim
47 words
Telescopic beam means as claimed in claim 17 wherein the axial spacing of said last-mentioned means from said one beam decreases when the intermediate and inner beams are telescoped together, whereby to minimize the collapsed length of the beam means for a given full extended length thereof.
Claim 23
Dependent Claim
48 words
Telescopic beam means as claimed in claim 16 wherein said last-mentioned means includes a floating beam end portion axially separable from the inner end of said one beam while being engageable with the inner end of the other beam at full extension of the inner and intermediate beams.
Claim 24
Dependent Claim
50 words
Telescopic beam means as claimed in claim 19 wherein said floating beam end portion has a lost motion connection with said inner end of said one beam permitting such axial separation during extension of said inner and intermediate beams and closing said axial separation upon retraction of said latter beams.
Claim 25
Dependent Claim
248 words
A telescopic spreader frame for handling cargo containers of different lengths which have latch receiving receptacles in the upper corner portions thereof, comprising a hollow fixed center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam telescoped in the intermediate beam, said beams being substantially coaxial, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, an end beam secured adjacent the outer end of each of said intermediate and inner beams which extends laterally outwardly in opposite directions from each of said intermediate and inner beams, latching means adjacent each end of each end beam for engaging the respective latch receiving receptacles of a cargo container, actuator means connected to each of said intermediate and inner beams for selectively extending and retracting the latter beams to engage the latching means of the end beams with a cargo container of any one of a plurality of selected lengths, and means operatively connecting the inner ends of the intermediate and inner beams for increasing extensibility of the beam assembly by permitting a controlled separation in an axial direction of said inner ends whereby at full extension of the inner and intermediate beams a floating beam end portion connected to one of the telescopic beams is movable axially in relation to said one beam such that at full extension of the inner and intermediate beams said floating beam end is spaced axially from said one beam.
Claim 26
Dependent Claim
248 words
A telescopic spreader frame for handling cargo containers of different lengths which have latch receiving receptacles in the upper corner portions thereof, comprising a hollow fixed center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam telescoped in the intermediate beam, said beams being substantially coaxial, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, an end beam secured adjacent the outer end of each of said intermediate and inner beams which extends laterally outwardly in opposite directions from each of said intermediate and inner beams, latching means adjacent each end of each end beam for engaging the respective latch receiving receptacles of a cargo container, actuator means connected to each of said intermediate and inner beams for selectively extending and retracting the latter beams to engage the latching means of the end beams with a cargo container of any one of a plurality of selected lengths, and means operatively connecting the inner ends of the intermediate and inner beams for increasing extensibility of the beam assembly by permitting a controlled separation in an axial direction of said inner ends whereby at full extension of the inner and intermediate beams a floating beam end portion connected to one of the telescopic beams is movable axially in relation to said one beam such that at full extension of the inner and intermediate beams said floating beam end is spaced axially from said one beam.
Claim 27
Dependent Claim
30 words
A spreader frame as claimed in claim 21 wherein said floating beam end engages the inner end of the other beam when it is spaced axially from said one beam.
Claim 28
Dependent Claim
241 words
A telescopic spreader frame for handling cargo containers of different lengths which have latch receiving receptacles in the upper corner portions thereof, comprising a hollow fixed outer center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam teleScoped in the intermediate beam, said beams being substantially coaxial, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, an end beam secured adjacent the outer end of each of said intermediate and inner beams which extends laterally outwardly in opposite directions from each of said intermediate and inner beams, latching means adjacent each end of each end beam for engaging the respective latch receiving receptacles of a cargo container, actuator means connected to each of said intermediate and inner beams for selectively extending and retracting the latter beams to engage the latching means of the end beams with a cargo container of any one of a plurality of selected lengths, transversely extending lifting beams mounted from opposite end portions of the center beam, and lifting means connected to each lifting beam for elevating said spreader frame, said actuator means including first and second actuators, the first of which is connected to the center beam and to the intermediate beam through one of said lifting beams, and the other of which is connected to the center beam and to the inner beam through the other of said lifting beams.
Claim 29
Dependent Claim
241 words
A telescopic spreader frame for handling cargo containers of different lengths which have latch receiving receptacles in the upper corner portions thereof, comprising a hollow fixed outer center beam, a hollow intermediate beam telescoped in the center beam, a hollow inner beam teleScoped in the intermediate beam, said beams being substantially coaxial, said intermediate and inner beams being extensible away from each other out of opposite ends of said center beam, an end beam secured adjacent the outer end of each of said intermediate and inner beams which extends laterally outwardly in opposite directions from each of said intermediate and inner beams, latching means adjacent each end of each end beam for engaging the respective latch receiving receptacles of a cargo container, actuator means connected to each of said intermediate and inner beams for selectively extending and retracting the latter beams to engage the latching means of the end beams with a cargo container of any one of a plurality of selected lengths, transversely extending lifting beams mounted from opposite end portions of the center beam, and lifting means connected to each lifting beam for elevating said spreader frame, said actuator means including first and second actuators, the first of which is connected to the center beam and to the intermediate beam through one of said lifting beams, and the other of which is connected to the center beam and to the inner beam through the other of said lifting beams.
References Cited (Backward Citations)
US3078115A
Cited
US3261637A
Cited
US3348711A
Cited
US3536350A
Cited
US3520431A
Cited
US3514146A
Cited
US3576269A
Cited
US3627370A
Cited
US3698581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |