Drawing compass

Details Drawing compass Drawing compass

2005-06-21

2005-06-21

Smith, R Alexander (Department: 2859)

Geometrical instruments

Scriber

Curved line

Reexamination Certificate

active

06907669

ABSTRACT:
A drawing compass with a structure of L shape and a method of using the same provide improved single-hand manipulation and handling of drawing an arc or circle. The drawing compass comprises a handle rotatably mounted on one end of an arm and a pivot pin holder slidably mounted along the arm. One can make an arc or circle by simply holding the handle perpendicular to a drawing surface, placing the pivot pin at the center and making a circular motion guided by the arm of the compass. In the drawing process, the pressure applied on the marking point is directly controlled by hand. The compass is easy to use, inexpensive, and simple to manufacture.

REFERENCES:
patent: 487800 (1892-12-01), Troll
patent: 1460093 (1923-06-01), Costovici
patent: 2062157 (1936-11-01), Benshimol
patent: 2471193 (1949-05-01), Brower
patent: 2512235 (1950-06-01), Lankford
patent: 2698484 (1955-01-01), Zern et al.
patent: 3292262 (1966-12-01), Moll
patent: 3805391 (1974-04-01), Glasgow
patent: 3815246 (1974-06-01), Prickett
patent: 4044464 (1977-08-01), Schiess et al.
patent: 4616418 (1986-10-01), Wade, III
patent: 4794699 (1989-01-01), Perna
patent: 5040299 (1991-08-01), Hwang
patent: 5235754 (1993-08-01), Sirois
patent: 5253421 (1993-10-01), Landmark
patent: 5784791 (1998-07-01), Nakamura
patent: 6311404 (2001-11-01), Smith

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