Drawing table

Details Drawing table Drawing table

1981-08-10

1983-10-11

Haroian, Harry N.

Optics: image projectors

Miscellaneous

353 98, 353119, 33 1M, 33 1AA, G03B 2110

Patent

active

044088507

ABSTRACT:
The present invention provides a drawing table for use in the fields of drafting, architecture, computer graphics, and graphic arts and the like wherein the drawing table includes means allowing projection of an optical image from below onto the working surface of the table at a plurality of angles of impingement allowing the image to be traced and/or overlaid with another image at the working surface without interference with the optical image from the body or instruments of a worker positioned over the working surface and allowing the optical image to be distorted to other perspectives as desired and allowing scale variations by movement of the components of the table substantially along the horizontal or at inclines from the horizontal, and permitting the working surface of the table to be disposed at inclines from the horizontal without loss of the other advantages.

REFERENCES:
patent: 997418 (1911-07-01), Sayles
patent: 2010551 (1935-08-01), McConalogue
patent: 2215462 (1940-09-01), Davidson et al.
patent: 3311070 (1967-03-01), Barzee et al.
patent: 3837740 (1974-09-01), Johnson
patent: 3950085 (1976-04-01), Grimm
patent: 4314407 (1982-02-01), Kawahara
patent: 4346260 (1982-08-01), Kaufmann

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