US3863970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fork truck spreader for cargo containers
Assignee: Midland Ross Corp
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Filing: 1973-07-26
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Granted: 1975-02-04
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Expires: 1993-07-26
Abstract
Abstract Disclosed is a longitudinally extendable spreader which is constructed for receiving and being thus connected with the fork of a fork-lift carrier at a level within the spreader just in the clear of the top of a container interlocked with the spreader. The spreader is constructed in one portion directly supported by the carrier and another turntable portion pivotally carried on the first portion to permit angular adjustments of the load about a vertical axis.
Inventors
- 👤 Carl R Gottlieb
- 👤 Jack E Fathauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:04
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/186
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
136 words
A cargo container spreader for a carrier having cantilever spreader-supporting means extending horizontally outwardly from the carrier comprising: a platform frame comprising channel means for receiving said carrier supporting means in guide relation therewith, said platform frame having upward facing bearing means; a skew frame arranged in overlying crosswise relation with the platform frame and having downward facing bearing means received by and resting on said upward facing bearing means, said bearing means being arranged in concentric relation with a normally vertical axis of rotation located centrally of both frames, said frames being connected for relative rotation about said axis; said skew frame being of generally horizontally rectangular configuration and having means at the four corners thereof extending to the level below said platform frame and terminating in latching means for interlocking with a cargo container.
Claim 2
Dependent Claim
136 words
A cargo container spreader for a carrier having cantilever spreader-supporting means extending horizontally outwardly from the carrier comprising: a platform frame comprising channel means for receiving said carrier supporting means in guide relation therewith, said platform frame having upward facing bearing means; a skew frame arranged in overlying crosswise relation with the platform frame and having downward facing bearing means received by and resting on said upward facing bearing means, said bearing means being arranged in concentric relation with a normally vertical axis of rotation located centrally of both frames, said frames being connected for relative rotation about said axis; said skew frame being of generally horizontally rectangular configuration and having means at the four corners thereof extending to the level below said platform frame and terminating in latching means for interlocking with a cargo container.
Claim 3
Dependent Claim
55 words
The cargo container spreader of claim 1 wherein: said skew frame is longitudinally extendable and comprises a turntable chassis and two subframes supported by said chassis in telescoping relation therewith for movements in radially opposite paths relative to said axis to dispose portions of the subframes in varying degrees of cantilever relation with the chassis.
Claim 4
Dependent Claim
47 words
The cargo container spreader of claim 2 comprising: power means connecting the platform frame with said chassis for effecting the relative rotation of said frames, and power means connectiNg each subframe with said chassis for moving said subframes along respective paths into and out of said chassis.
Claim 5
Dependent Claim
34 words
The cargo container spreader of claim 2 wherein: said chassis and said subframes are substantially the same length and the subframes both telescope within the width, and substantially within the length, of said chassis.
Claim 6
Dependent Claim
39 words
The cargo container spreader of claim 1 wherein: one of said frames comprises a kingpin and the other frame comprises a bearing in journal-bearing relation with the kingpin and fixed in respective frames in concentric relation with said axis.
Claim 7
Dependent Claim
25 words
The cargo container spreader of claim 1 comprising: power means operatively positioned between and connecting with the two frames for effecting the relative rotation thereof.
Claim 8
Dependent Claim
56 words
The cargo container spreader of claim 1 wherein: said connecting means comprises channel means adapted to receive the fork of a mobile carrier, said channel means located on the underside of the platform frame along parallel lines extending transversely of the length of said skew frame when positioned in normal parallel alignment with said platform frame.
Claim 9
Dependent Claim
40 words
The cargo container spreader of claim 7 wherein: said latching means comprises latches at the lower extremities thereof and said latches are located at a level in downward juxtaposition to a plane containing the lower surfaces of said channel means.
Claim 10
Dependent Claim
45 words
The cargo container spreader of claim 1 wherein: said bearing means comprises pads on one frame received against elongate pads on the other frame, the latter being elongated in directions tangential to said axis to provide a desired range of relative rotation of the frames.
Claim 11
Dependent Claim
27 words
The cargo container spreader of claim 9 wherein: said pads of the platform frame are positioned at four corners of a rectangle directly over said channel means.
Claim 12
Dependent Claim
118 words
The cargo container of claim 1 wherein: each frame comprises a pair of longitudinal members of which the transverse spacing of said members of the skew frame is approximately equal to that of said members of the platform frame and disposed directly thereover at normal or parallel alignment of the frames; and said bearing means are pads located in centered longitudinal alignment with respective adjacent longitudinal frame members with four of said pads on one frame and four elongate pads of said pads on the other frame in separate slidable engagement with said first mentioned pads, said second-mentioned pads being elongated in directions tangential to said axis to provide a desired range of relative rotation of the frames.
Claim 13
Dependent Claim
105 words
The cargo container spreader of claim 1 wherein: the skew frame is longitudinally extendable and comprises a turntable chassis and two subframes supported by said chassis in telescoping relation therewith; said subframes each comprising a pair of spaced parallel runners and cross bracing between lower portions of the runners; the runners of one subframe being spaced more closely than the runners of the other subframe, and said one subframe being supported at a higher level within the chassis than the other subframe to enable passage of the runners of said one subframe between the runners and over the cross bracing thereof of said other subframe.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |