Patent US4741107A successfully refreshed from Google Patents.
US4741107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artwork aid adapted for facilitating placement of lettering along arc of a circle
Assignee: Individual
•
Filing: 1987-07-31
•
Granted: 1988-05-03
•
Expires: 2007-07-31
Abstract
Abstract Artwork often involves the placement of lettering along the arc of a circle. Practice is to use a compass to lay out the arc and then place the lettering along the arc. The arc is then erased. The present invention provides a lightbox whose platen is fitted with a vertical centerline and a pivot. Basemarks are positioned along the centerline, each at a distance from the pivot equal to the radius of a desired arc. The art sheet is placed on the platen so that the center of the desired arc falls over the pivot. The sheet is rotated about the pivot as successive letters are applied. The desired basemark is used as a position indicator for the base of each letter. The letter is oriented so that the centerline bisects it vertically. In one embodiment the pivot is adapted for use in punching a hole in the art paper.
Inventors
- 👤 Jeffrey L. Circle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:25
CPC Classifications
G; G09; G09B; G09B11/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
An aid for use in artwork involving the placement of lettering along the arc of a circle; said aid comprising a lightbox having a translucent platen, a vertical centerline scribed on said platen, a basemark on said centerline, and a pivot means located on said centerline; said platen being adapted for supporting a sheet of art paper; said pivot means being adapted for serving as a center extending through a hole in the art paper about which said art paper can be rotated; said basemark serving as a position indicator for placement of successive letters of said lettering; and said centerline serving as a guide for orientation of said lettering.
Claim 2
Dependent Claim
110 words
An aid for use in artwork involving the placement of lettering along the arc of a circle; said aid comprising a lightbox having a translucent platen, a vertical centerline scribed on said platen, a basemark on said centerline, and a pivot means located on said centerline; said platen being adapted for supporting a sheet of art paper; said pivot means being adapted for serving as a center extending through a hole in the art paper about which said art paper can be rotated; said basemark serving as a position indicator for placement of successive letters of said lettering; and said centerline serving as a guide for orientation of said lettering.
Claim 3
Dependent Claim
25 words
An aid as in claim 1; and having a set of basemarks distributed along said centerline, said basemark being selected from said set of basemarks.
Claim 4
Dependent Claim
101 words
An aid as in claim 1; and said pivot means comprising a set of three holes along said centerline; a first of said holes being near the top of said platen and adapted for use in placing lettering along the bottom portion of a circle; a second of said holes being near the bottom of said platen and adapted for use in placing lettering along the top portion of a circle; and a third of said holes being near the center of said platen and adapted for use in placing lettering along both the top and bottom portions of a circle.
Claim 5
Dependent Claim
131 words
An aid as in claim 3; each of said holes having a guide section extending upward from the underside of said platen and being approximately 2 mm in diameter; each of said holes having a punch section extending downward from the upper side of said platen, said punch section being concentric with said guide section, and said punch section being significantly larger in diameter than said guide section; said pivot means having a pin adapted for fitting into said guide section; said pivot means having a punch concentric with said pin and slightly less in diameter than said punch section; said pivot means having a top affixed to the free end of said punch section; and the pivot means being adapted for use in punching a hole in said art paper.
Claim 6
Dependent Claim
39 words
An aid as in claim 3; said pivot means being a commonly available pin having a head and a shaft; and each of said holes in said platen being of slightly larger diameter than the diameter of said shaft.
References Cited (Backward Citations)
US864850A
Cited
US1041435A
Cited
US997418A
Cited
US1558041A
Cited
GB335064A
Cited
US2238106A
Cited
US4689017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |