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US4518140A Expired / Lapsed US ⏱️ 0.0 years remaining

Drawing board assembly

Assignee: Individual
•
Filing: 1980-04-21
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Granted: 1985-05-21
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Expires: 2000-04-21
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Abstract

Abstract The drawing board assembly which is constructed to facilitate portability and also to facilitate usage which takes the form of a base, a backing board and a drawing board. The backing board is adjustable to various inclined positions in respect to the base. The drawing board is to be releasably, pivotally mounted on the exterior surface of the backing board so that the drawing board can be pivoted to any desirable position in respect to the backing board. A storage container for painting or drawing materials is mounted on the upper surface of the base. When in the collapsed, transporting position, the drawing board is located parallel to the upper surface of the base enclosing the storage chamber with the inner surface of the backing board being positioned against the drawing board.

Inventors

  • 👤 John J. Ferranto

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 12:33
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/18; A; A47; A47B; A47B97/00; A47B97/04; A47B97/08; B43; B43L; B43L13/00; B43L13/005

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 340 words
A drawing board assembly comprising: a base, said base having a fore edge and an aft edge and an upper surface and a lower surface, said lower surface adapted to be located upon a planar supportive surface, said upper surface including stop means; a backing board having a front side and a back side, said back side being hingedly connected to said upper surface at said fore edge, said front side including pivot means; brace means connected to said back side of said backing board, said brace means to releasably engage with said stop means causing said backing board to assume an inclined position relative to said base, when said drawing board assembly is to not be in use said brace means is to be disengaged from said stop means permitting said backing board to be parallel and directly adjacent said base; a drawing board having a front side and a back side, said front side being adapted to function as an operating surface, a pivot pin centrally mounted on said back side, said pivot pin adapted to releasably connect with said pivot means permitting pivoting of said drawing board relative to said backing board solely upon application of sufficient manual force; and said pivot means comprising a plurality of separate pivoting points, said pivot pin being capable of connecting with any one of said pivoting points thereby adjusting the location of said drawing board in respect to said backing board, each said pivoting point being formed by a transverse slot with there being a plurality of said transverse slots located in a spaced apart manner, each said transverse slot having an open upper end and a closed lower end, said closed lower end of each said transverse slot being located nearer said base than its respective said upper end when said backing board is in said inclined position relative to said base, said upper ends being connected together by an elongated slot, a pivoting point being when said pivot pin is located directly adjacent a said closed lower end.
Claim 2
Dependent Claim 340 words
A drawing board assembly comprising: a base, said base having a fore edge and an aft edge and an upper surface and a lower surface, said lower surface adapted to be located upon a planar supportive surface, said upper surface including stop means; a backing board having a front side and a back side, said back side being hingedly connected to said upper surface at said fore edge, said front side including pivot means; brace means connected to said back side of said backing board, said brace means to releasably engage with said stop means causing said backing board to assume an inclined position relative to said base, when said drawing board assembly is to not be in use said brace means is to be disengaged from said stop means permitting said backing board to be parallel and directly adjacent said base; a drawing board having a front side and a back side, said front side being adapted to function as an operating surface, a pivot pin centrally mounted on said back side, said pivot pin adapted to releasably connect with said pivot means permitting pivoting of said drawing board relative to said backing board solely upon application of sufficient manual force; and said pivot means comprising a plurality of separate pivoting points, said pivot pin being capable of connecting with any one of said pivoting points thereby adjusting the location of said drawing board in respect to said backing board, each said pivoting point being formed by a transverse slot with there being a plurality of said transverse slots located in a spaced apart manner, each said transverse slot having an open upper end and a closed lower end, said closed lower end of each said transverse slot being located nearer said base than its respective said upper end when said backing board is in said inclined position relative to said base, said upper ends being connected together by an elongated slot, a pivoting point being when said pivot pin is located directly adjacent a said closed lower end.
Claim 3
Dependent Claim 45 words
The drawing board assembly as defined in claim 1 wherein: said stop means including a plurality of separate stop locations, said brace means to be engageable with each said stop location thereby causing said backing board to assume various inclined positions relative to said base.
Claim 4
Dependent Claim 24 words
The drawing board assembly as defined in claim 2 wherein: said brace means being hingedly connected to said back side of said backing board.
Claim 5
Dependent Claim 44 words
The drawing board assembly as defined in claim 3 wherein: with said brace means disengaged from said stop means and said backing board being located directly adjacent said base said brace means functions as a handle to facilitate portability of said drawing board assembly.
Claim 6
Dependent Claim 53 words
The drawing board assembly as defined in claim 4 including: tie down means connected between said brace means and said base, said tie down means to secure together said brace means and said base when said brace is disengaged from said stop means and said backing board is located directly adjacent said base.
Claim 7
Dependent Claim 53 words
The drawing board assembly as defined in claim 5 including: a storage chamber mounted on said base, with said brace means disengaged from said stop means and said backing board is located directly adjacent said base said drawing board to be locatable between said backing board and said base enclosing said storage chamber.

References Cited (Backward Citations)

US2969607A Cited
CH43751A Cited
US1401458A Cited
US1920452A Cited
US2003746A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-05-20 1988-11-19 1989-05-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-05-20 1992-11-19 1993-05-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-05-20 1996-11-19 1997-05-21 $7700.00 Window Closed / Lapsed

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