Patent US4052944A successfully refreshed from Google Patents.
US4052944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable shuffle desk
Assignee: UNIK Inc
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Filing: 1975-11-20
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Granted: 1977-10-11
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Expires: 1995-11-20
Abstract
Abstract A portable desk for the convenience of invalids, traveling men or others who do not have access to other desk surfaces. The lower portion of the desk is a pillow-like portion of flexible material which forms a yieldable container which is partially filled with a dry, flowable material, such as expanded styrofoam beads, particles or the like. The casing portion is secured at the top to a piece of sub-covering of suitable size, which in turn is secured to a hard, planar sheet of material by adhesive, glue or other suitable means. The styrofoam beads may be shifted or shuffled about until the pillow-like portion adjusts to the contour of the surface on which it is to be used. An upstanding abutment secured along one side of the desk top forms a stop for books, pencils and the like to rest against.
Inventors
- 👤 Russell A. Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:45
CPC Classifications
A; A47; A47B; A47B23/00; A47B23/002; A47G; A47G23/00; A47G23/06; A47G23/0608
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
135 words
A lightweight portable desk adapted to be placed on and conform to regular and irregular base surfaces, comprising planar hard desk surface means, flexible casing means attached to the bottom periphery of said desk surface means, said flexible casing means attached to the periphery of partially rigid sheet means which is substantially coplanar with said desk surface means and secured to the bottom thereof, said casing means being substantially filled with a lightweight flowable granular material, said granular material having a suitable density and looseness whereby said desk can be placed on any base surface and said desk surface can be adjusted to a desired angular position by readily shifting said lightweight flowable material within said flexible casing to thereby conform said casing and flowable material to the contour and shape of said base surface.
Claim 2
Dependent Claim
135 words
A lightweight portable desk adapted to be placed on and conform to regular and irregular base surfaces, comprising planar hard desk surface means, flexible casing means attached to the bottom periphery of said desk surface means, said flexible casing means attached to the periphery of partially rigid sheet means which is substantially coplanar with said desk surface means and secured to the bottom thereof, said casing means being substantially filled with a lightweight flowable granular material, said granular material having a suitable density and looseness whereby said desk can be placed on any base surface and said desk surface can be adjusted to a desired angular position by readily shifting said lightweight flowable material within said flexible casing to thereby conform said casing and flowable material to the contour and shape of said base surface.
Claim 3
Dependent Claim
16 words
The portable desk of claim 1, wherein said flexible casing means is a flexible fabric material.
Claim 4
Dependent Claim
17 words
The portable desk of claim 1, wherein said granular material is a lightweight, expanded, foamed plastic material.
Claim 5
Dependent Claim
14 words
The portable desk of claim 3, wherein said foamed plastic material is expanded polystyrene.
Claim 6
Dependent Claim
13 words
The portable desk of claim 3, wherein said foamed plastic material is styrofoam.
Claim 7
Dependent Claim
12 words
The portable desk of claim 1, wherein said granular material is sawdust.
Claim 8
Dependent Claim
15 words
The portable desk of claim 1, wherein said casing means is a flexible plastic material.
Claim 9
Dependent Claim
20 words
The portable desk of claim 1, wherein said desk surface means comprises longitudinal upstanding stop means along an edge thereof.
Claim 10
Dependent Claim
36 words
The portable desk of claim 1, wherein said partially rigid sheet means has door like openings through which said granular material has been inserted prior to attachment of said sheet means to said desk surface means.
Claim 11
Dependent Claim
27 words
The portable desk of claim 1, wherein said casing means is inturned over at least a portion of said partially rigid sheet material around the periphery thereof.
Claim 12
Dependent Claim
16 words
The portable desk of claim 1, wherein said partially rigid sheet means is a corrugated material.
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |