US4022135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift sheet
Assignee: Kimberly Clark Tissue Co
•
Filing: 1975-09-11
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Granted: 1977-05-10
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Expires: 1995-09-11
Abstract
Abstract A disposable lift sheet formed of paper board having beneath one edge of the platform portion thereof a multiple layer stack of strips which provide a pierceable target area for the forks of the lift truck. The target area strips in the upper portion of the stack are wider than the strips in the lower portion of the stack to provide gradual stepped support for the platform portion and to reinforce the fork entry region of the lift sheet and prevent accidental piercing of the platform portion and the supported load thereon by the forks. In the preferred embodiment the target area strips are integral with the platform portion and are provided by reverse folding edge portions of the base sheet from which the lift sheet is made.
Inventors
- 👤 Edward W. Bauman, Jr.
- 👤 Edwin J. McLean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:09
CPC Classifications
B; B65; B65D; B65D19/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A lift sheet for facilitating the lifting of a multiple component unit load from a supporting surface, said sheet comprising a platform portion for supporting a load on the upper surface thereof, said platform portion including a front, fork entry edge and an opposed rear edge, multiple sheet portions disposed in upper and lower stacked relationship beneath said platform portion and adjacent said front edge of said platform portion, the upper stack portions extending inwardly of said platform portion and terminating short of said rear edge, said lower stack portions extending inwardly of said platform portion a lesser distance than said upper stack portions whereby said upper and lower stacked portions provide a stepped configuration for maintaining said platform portion in substantially a planar position when said load is placed thereon.
Claim 2
Dependent Claim
131 words
A lift sheet for facilitating the lifting of a multiple component unit load from a supporting surface, said sheet comprising a platform portion for supporting a load on the upper surface thereof, said platform portion including a front, fork entry edge and an opposed rear edge, multiple sheet portions disposed in upper and lower stacked relationship beneath said platform portion and adjacent said front edge of said platform portion, the upper stack portions extending inwardly of said platform portion and terminating short of said rear edge, said lower stack portions extending inwardly of said platform portion a lesser distance than said upper stack portions whereby said upper and lower stacked portions provide a stepped configuration for maintaining said platform portion in substantially a planar position when said load is placed thereon.
Claim 3
Dependent Claim
20 words
The sheet defined in claim 1, wherein the lowermost stack portion extends outwardly of said edge of the platform portion.
Claim 4
Dependent Claim
143 words
A lift sheet for facilitating the lifting of a multiple component unit load from a supporting surface, said sheet comprising a platform portion for supporting a load on the upper surface thereof, said sheet including a front, fork entry edge and an opposed rear edge, a first integral double thickness fold portion extending inwardly from and beneath said front edge of said platform portion and a second integral double thickness fold portion extending from and beneath said first fold portion, said first fold portion extending inwardly of the platform portion and terminating short of said rear edge thereof, said second fold portion extending inwardly of the platform portion a lesser distance than said first fold portion whereby said upper and lower stacked portions provide a stepped configuration for maintaining said platform portion in substantially a planar position when said load is placed thereon.
Claim 5
Dependent Claim
143 words
A lift sheet for facilitating the lifting of a multiple component unit load from a supporting surface, said sheet comprising a platform portion for supporting a load on the upper surface thereof, said sheet including a front, fork entry edge and an opposed rear edge, a first integral double thickness fold portion extending inwardly from and beneath said front edge of said platform portion and a second integral double thickness fold portion extending from and beneath said first fold portion, said first fold portion extending inwardly of the platform portion and terminating short of said rear edge thereof, said second fold portion extending inwardly of the platform portion a lesser distance than said first fold portion whereby said upper and lower stacked portions provide a stepped configuration for maintaining said platform portion in substantially a planar position when said load is placed thereon.
Claim 6
Dependent Claim
24 words
The sheet defined in claim 3, wherein an edge region of said second fold portion extends outwardly of said edge of the platform portion.
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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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |