Patent US2367412A successfully refreshed from Google Patents.
US4519476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable workbench top
Assignee: ANDRAL CORP
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Filing: 1984-05-29
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Granted: 1985-05-28
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Expires: 2004-05-29
Abstract
Abstract This invention relates to a detachable top to be used with foldup ladders of the type described in co-pending applications Ser. Nos. 06/341,830; 06/492,487; and 06/537,276. Also, this top can be used with the slidable ladder described in U.S. Pat. No. 4,429,766. This ladder can be converted into many structures such as a workbench, table or step ladder. The top comprises a rectangular main portion and a narrower extending section. The main portion fits over and around the rails of the ladder (after conversion to a workbench) and the narrower extending section fits inside the rails but on substantially the same plane as the main portion.
Inventors
- 👤 Salvador Alimbau Marques
- 👤 Giorgio Grasselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:33
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/38; E06C1/39; E06C1/393; E06C1/52; E06C1/56; E06C7/00; E06C7/16
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
81 words
A detachable top adapted for use with a supporting structure comprising a substantially rectangular main portion having an extending section protruding therefrom, said extending section having a width less than that of said main rectangular portion and adjacent to and integral with one side of said main portion, a side wall extending downward from substantially the entire peripheral portion of said main rectangular portion and said extending section, and a cutout area located between said main portion and said extending section.
Claim 2
Dependent Claim
81 words
A detachable top adapted for use with a supporting structure comprising a substantially rectangular main portion having an extending section protruding therefrom, said extending section having a width less than that of said main rectangular portion and adjacent to and integral with one side of said main portion, a side wall extending downward from substantially the entire peripheral portion of said main rectangular portion and said extending section, and a cutout area located between said main portion and said extending section.
Claim 3
Dependent Claim
16 words
The detachable top of claim 1 wherein said cutout area is located in said side wall.
Claim 4
Dependent Claim
28 words
The detachable top of claim 1 wherein said main portion has a recessed portion on either side of said extending section, and wherein said cutout area is located.
Claim 5
Dependent Claim
24 words
The detachable top of claim wherein said extending section contains a pocket which is depressed downwardly from the upper surface of said detachable top.
Claim 6
Dependent Claim
49 words
The detachable top of claim 1 wherein said side wall of said main portion is adapted to fit over the outer periphery of said supporting structure and wherein said side wall of said extending section is adapted to fit adjacent of the inner periphery of said same supporting structure.
Claim 7
Dependent Claim
25 words
The detachable top of claim 1 wherein said main portion has at least one projection extending downward beyond the upper surface of said detachable top.
Claim 8
Dependent Claim
32 words
The detachable top of claim 1 wherein said main portion contains two fluted sections to accommodate the leg portions of said supporting structure when said structure is folded within said detachable top.
Claim 9
Dependent Claim
133 words
A detachable top adapted for use with a supporting structure comprising a substantially rectangular main portion having extending from one side thereof an extending section, a recessed portion of said main portion located adjacent said extending section and integral therewith, a cutout area located on each side of said recessed portion thereby defining two openings to accommodate brackets used with said supporting structure, said main portion and said extending section having a side wall extending downward from substantially the entire peripheral portion of said detachable top, the main portion part of said side wall adapted to fit over said supporting structure and the extending section part of said side wall adapted to fit inside the terminal portions of said supporting structure, and a pocket located in and extending downward from said extending section.
Claim 10
Dependent Claim
133 words
A detachable top adapted for use with a supporting structure comprising a substantially rectangular main portion having extending from one side thereof an extending section, a recessed portion of said main portion located adjacent said extending section and integral therewith, a cutout area located on each side of said recessed portion thereby defining two openings to accommodate brackets used with said supporting structure, said main portion and said extending section having a side wall extending downward from substantially the entire peripheral portion of said detachable top, the main portion part of said side wall adapted to fit over said supporting structure and the extending section part of said side wall adapted to fit inside the terminal portions of said supporting structure, and a pocket located in and extending downward from said extending section.
Claim 11
Dependent Claim
16 words
The detachable top of claim 8 wherein said cutout area is located in said side wall.
Claim 12
Dependent Claim
49 words
The detachable top of claim 8 wherein said side wall of said main portion is adapted to fit over the outer periphery of said supporting structure and wherein said side wall of said extending section is adapted to fit adjacent of the inner periphery of said same supporting structure.
Claim 13
Dependent Claim
25 words
The detachable top of claim 8 wherein said main portion has at least one projection extending downward beyond the upper surface of said detachable top.
Claim 14
Dependent Claim
32 words
The detachable top of claim 8 wherein said main portion contains two fluted sections to accommodate the leg portions of said supporting structure when said structure is folded within said detachable top.
Claim 15
Dependent Claim
13 words
The detachable top of claim 8 made from a high impact polystyrene material.
Claim 16
Dependent Claim
11 words
The detachable top of claim 8 made from a plastic material.
Claim 17
Dependent Claim
9 words
The detachable top of claim 8 made from fiberglass.
Claim 18
Dependent Claim
10 words
The detachable top of claim 8 made from a metal.
Claim 19
Dependent Claim
9 words
The detachable top of claim 8 made from aluminum.
Claim 20
Dependent Claim
11 words
The detachable top of claim 8 made from a wood product.
Claim 21
Dependent Claim
148 words
A workbench-table comprising in combination a supporting structure and a detachable top, said supporting structure comprising a series of U-shaped modules which decrease in size as they approach the top of said supporting structure and each movably connected to the other, a hinge positioned in the upper portion of a wider module and in the lower portion of the next adjacent narrower module, said supporting structure folded in such a manner so as to define a workbench-table, said detachable top comprising a substantially rectangular main portion having extending from one side thereof an extending section, said extending section having a width less than that of said main portion and integral with one side of said main portion, and a cutout area located between said main portion and said extending section, said cutout area resting on a portion of said modules to secure said top to said supporting structure.
Claim 22
Dependent Claim
148 words
A workbench-table comprising in combination a supporting structure and a detachable top, said supporting structure comprising a series of U-shaped modules which decrease in size as they approach the top of said supporting structure and each movably connected to the other, a hinge positioned in the upper portion of a wider module and in the lower portion of the next adjacent narrower module, said supporting structure folded in such a manner so as to define a workbench-table, said detachable top comprising a substantially rectangular main portion having extending from one side thereof an extending section, said extending section having a width less than that of said main portion and integral with one side of said main portion, and a cutout area located between said main portion and said extending section, said cutout area resting on a portion of said modules to secure said top to said supporting structure.
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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) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |