Auxiliary drafting instrument combination applicable to...

Details Auxiliary drafting instrument combination applicable to... Auxiliary drafting instrument combination applicable to...

2005-05-03

2005-05-03

Fulton, Christopher W. (Department: 2859)

Geometrical instruments

Scriber

Curved line

C033S471000, C033S430000

Reexamination Certificate

active

06886263

ABSTRACT:
Auxiliary drafting instrument combination applicable to digital board, including a base seat formed with at least one pivot hole; a compass having a pivot seat for pivotally connecting two legs, a bottom end of one of the legs being snugly pivotally fitted in the pivot hole of the base seat, the other leg being connected with an electronic pen; and a subsidiary ruler one end of which is pivotally connectable on the base seat. By means of the combination of the base seat and the compass, a circle can be input on the digital board or by means of the combination of the base seat and the subsidiary ruler, an oblique line can be input on the digital board.

REFERENCES:
patent: 288235 (1883-11-01), Hanstein
patent: 595607 (1897-12-01), Coykendall
patent: 1263182 (1918-04-01), Wolthauseb
patent: 1331415 (1920-02-01), Civitts
patent: 2054420 (1936-09-01), Hochman
patent: 2663936 (1953-12-01), Lepkowski
patent: 3371420 (1968-03-01), Di Pane, Jr.
patent: 3934343 (1976-01-01), Witecki
patent: 4451895 (1984-05-01), Sliwkowski
patent: 5268844 (1993-12-01), Carver et al.

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