US4313585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling support platform device for writing, drawing and the like
Assignee: Individual
•
Filing: 1979-07-31
•
Granted: 1982-02-02
•
Expires: 1999-07-31
Abstract
Abstract A rolling support platform device is provided to assist in drawing, marking, writing, etc. The platform device also may be used as a teaching aid and by the handicapped, etc. The device includes a metal or plastic platform having three or more socket-shaped, partial knock-outs and a ball bearing in each socket. Sufficient friction is imparted to a bearing by each socket, thereby producing a smooth rolling action without the problems of over rolling.
Inventors
- 👤 Bernard L. Bricker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:39
CPC Classifications
B; B43; B43L; B43L15/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
A device for aiding in writing, and the like, including: a. a single element platform for supporting a writer's hand while manipulating a writing instrument; b. at least three partial knock-out cleats fabricated integrally from and disposed peripherally of the platform; c. a ball bearing rotatably disposed in each cleat, an upper bearing surface being exposed in each cleat for cleaning thereof and a lower bearing surface for contact with a writing surface; d. frictional contact between a cleat and bearing being sufficient to slow the rolling action of the platform when in use, thereby aiding in control of the device by the writer; e. the cleats being adapted for insertion and removal of bearings therefrom; and, f. a handle mounted on the device for directing and lifting the platform when use.
Claim 2
Independent Claim
132 words
A device for aiding in writing, and the like, including: a. a single element platform for supporting a writer's hand while manipulating a writing instrument; b. at least three partial knock-out cleats fabricated integrally from and disposed peripherally of the platform; c. a ball bearing rotatably disposed in each cleat, an upper bearing surface being exposed in each cleat for cleaning thereof and a lower bearing surface for contact with a writing surface; d. frictional contact between a cleat and bearing being sufficient to slow the rolling action of the platform when in use, thereby aiding in control of the device by the writer; e. the cleats being adapted for insertion and removal of bearings therefrom; and, f. a handle mounted on the device for directing and lifting the platform when use.
Claim 3
Dependent Claim
64 words
The device of claim 1 providing an absorbant pad in contact with the cleats or bearings and containing an ink, colorant or the like to thereby transfer ink to the bearings and the writing surface, whereby differences between writing marks produced by the roller bearings and a writer's pen, reflecting differences in articulation between finger and wrist movements can be diagnosed for remedial purposes.
Claim 4
Dependent Claim
18 words
The device of claim 1 or 2 including from three to five bearings disposed peripherally of the platform.
References Cited (Backward Citations)
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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) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |