US3884351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawing case for architects and the like
Assignee: Individual
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Filing: 1974-06-17
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Granted: 1975-05-20
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Expires: 1994-06-17
Abstract
Abstract In a drawing case of the type including a rigid tubular body having a longitudinal slot therein, a self-winding spring-roller having an elongate sheet mounted therearound, bracket means connected to the inside of the tubular body, at the opposite ends thereof, for supporting the ends of the roller to permit the sheet to reciprocate through the slot in the body, and first and second plugs mounted in the ends of the body for sealing same, the improvement wherein the width of the slot in the body is at least one half the diameter of the body and wherein the case includes a heavy, waterproof, sheet-like cover surrounding the body, the cover having a longitudinal slit therein, adjacent one side and the ends of the slot in the body, thereby forming a flap in the cover providing access to the slot; means for releasably attaching the flap to the cover to enclose the slot in the body; and an elongate, arcuate panel having approximately the same thickness as the tubular body and having the same dimensions as the slot therein, the panel being mounted on the inside surface of the flap so as to extend into the slot, coplanar with the body, thereby sealing the slot when the flap is attached to the cover.
Inventors
- 👤 Joseph W James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:04
CPC Classifications
A; A45; A45C; A45C11/00; A45C11/26; A47; A47B; A47B63/00; A47B63/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
190 words
In a drawing case of the type including a rigid tubular body having a longitudinal slot therein, a self-winding spring-roller having an elongate sheet mounted therearound, bracket means connected to the inside of said tubular body, at the opposite ends thereof, for supporting the ends of said roller to permit said sheet to reciprocate through said slot in said body, and first and second plugs mounted in the ends of said body for sealing same, the improvement comprising: a heavy, waterproof, sheet-like cover surrounding said body, said cover having a longitudinal slit therein adjacent one side and the ends of said slot in said body thereby forming a flap in said cover providing access to said slot; means for releasably attaching said flap to said cover to enclose said slot in said body; and an elongate, arcuate panel having approximately the same thickness as said tubular body and having the same dimensions as said slot therein, said panel being mounted on the inside surface of said flap so as to extend into said slot, coplanar with said body, thereby sealing said slot when said flap is attached to said cover.
Claim 2
Dependent Claim
190 words
In a drawing case of the type including a rigid tubular body having a longitudinal slot therein, a self-winding spring-roller having an elongate sheet mounted therearound, bracket means connected to the inside of said tubular body, at the opposite ends thereof, for supporting the ends of said roller to permit said sheet to reciprocate through said slot in said body, and first and second plugs mounted in the ends of said body for sealing same, the improvement comprising: a heavy, waterproof, sheet-like cover surrounding said body, said cover having a longitudinal slit therein adjacent one side and the ends of said slot in said body thereby forming a flap in said cover providing access to said slot; means for releasably attaching said flap to said cover to enclose said slot in said body; and an elongate, arcuate panel having approximately the same thickness as said tubular body and having the same dimensions as said slot therein, said panel being mounted on the inside surface of said flap so as to extend into said slot, coplanar with said body, thereby sealing said slot when said flap is attached to said cover.
Claim 3
Dependent Claim
40 words
In a drawing case according to claim 1, the improvement wherein said means for releasably attaching said flap to said cover comprises: a zipper connected to the edges of said cover and said flap, on opposite sides of said slit.
Claim 4
Dependent Claim
31 words
In a drawing case according to claim 1, the improvement further comprising: means for releasably attaching the free end of said elongate sheet to the inside surface of said arcuate panel.
Claim 5
Dependent Claim
85 words
In a drawing case according to claim 3, the improvement wherein said sheet attaching means comprises: a first pad of Velcro attached to the inside surface of said arcuate panel; at least one tab, one end of said tab being connected to the free end of said sheet; and a second pad of Velcro attached to the other end of said tab in position to be aligned with said first Velcro pad for attaching to said same when said sheet is wound around said spring-roller.
Claim 6
Dependent Claim
54 words
In a drawing case according to claim 1, the improvement wherein the width of said slot in said body is at least one half the diameter of said body, and wherein said ends of said roller are releasably supported by said bracket means permitting removal of said roller through said slot in said body.
Claim 7
Dependent Claim
54 words
In a drawing case according to claim 1 wherein said sheet includes a fastening means positioned adjacent the end thereof connected to said spring-roller for mounting one or more drawings on one side of said sheet, the improvement wherein the other side of said sheet is a chalk board to provide a writing surface.
Claim 8
Dependent Claim
27 words
In a drawing case according to claim 1, the improvement further comprising: means connected to the inside surface of said arcuate panel for mounting writing instruments thereon.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |