US3908561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single pedestal drafting table
Assignee: Individual
•
Filing: 1974-02-21
•
Granted: 1975-09-30
•
Expires: 1994-02-21
Abstract
Abstract A single pedestal drafting table incorporating a unique, rigid, one-piece frame including a base, a post rising at a forward incline from the rear thereof and a horizontal cross tube on top of said post in T formation and lying parallel to the front of said base. A drawing board is tiltably mounted on the frame''s horizontal cross tube by cup-like members fitting concentrically over opposite ends of the cross tube in rotatable relation. The drawing board is normally held against tilting movement by a manually applied locking device that causes a braking action by said cups against the ends of said cross tube and when released is cushioned in its turning by a counterbalancing spring mechanism housed in said tube.
Inventors
- 👤 Gary Cowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:21
CPC Classifications
A; A47; A47B; A47B27/00; A47B27/04; A47B27/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A drafting table comprising i. an integral one-piece frame including a base, a single inclined post rising therefrom and an elongated horizontal cross tube member mounted centrally on said post in T formation ii. an inwardly facing cup disposed concentrically over each end of said cross tube member in rotatable bearing-like fit about the end of the tube and iii. a drawing board carried by the cross tube member of said integral one-piece frame in tiltable relation having a spaced pair of parallel brackets on the rear thereof that lie beyond the ends of said cross tube member and are removably secured against the base of said rotatable cups.
Claim 2
Dependent Claim
109 words
A drafting table comprising i. an integral one-piece frame including a base, a single inclined post rising therefrom and an elongated horizontal cross tube member mounted centrally on said post in T formation ii. an inwardly facing cup disposed concentrically over each end of said cross tube member in rotatable bearing-like fit about the end of the tube and iii. a drawing board carried by the cross tube member of said integral one-piece frame in tiltable relation having a spaced pair of parallel brackets on the rear thereof that lie beyond the ends of said cross tube member and are removably secured against the base of said rotatable cups.
Claim 3
Dependent Claim
50 words
A drafting table according to claim 1, having a rod disposed axially in said cross tube member with its opposite ends projecting through said end bearing cups and means on said rod to force said bearing cups against the respective engaged ends of said cross tube member in braking relation.
Claim 4
Dependent Claim
42 words
A drafting table according to claim 2, wherein the ends of said cross tube member are closed by centrally apertured rod-passing disks, and the means of said rod is a lever operated cam that forces said bearing cups against said respective disks.
Claim 5
Dependent Claim
62 words
A drafting table according to claim 3, wherein said rod is rotatable in one end cup, non-rotatably engaged by the other end cup and longitudinally slidable through both, an adjustment nut being threaded on the rotatable end of the rod exteriorly of engaged cup and the cam being pivoted on the other end of the rod exteriorly of the non-rotatably engaged cup.
Claim 6
Dependent Claim
58 words
A drafting table according to claim 1 having a radially projecting circumferentially extending abutment on said cross tube member near an end thereof engageable by one of said bearing cups, said cup having the upper edge of its wall recessed to accommodate said abutment and limiting the tilting movement of said board to a rotation of approximately 90*.
Claim 7
Dependent Claim
51 words
A drafting table according to claim 1, having a counter-balancing torsion spring coiled within said cross tube member and biased between said fixed integral one-piece frame and an end cup fitted over the end of said tube member in rotatable relation and secured to a bracket on said tiltable drawing board.
Claim 8
Dependent Claim
73 words
A drafting table according to claim 2, wherein said axially disposed rod has at least one end thereof non-rotatably related to the drawing board supporting cup whereby the rod is caused to turn as the drawing board is tilted, a counterbalancing torsion spring coiled concentrically about said rod within said cross tube member and biased between said frame and said drawing board, and a silencer tube encircled by the convolutions of said spring.
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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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |