Parallel rule
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United States of America Patent
Stats
-
Oct 6, 1992
Issued Date -
N/A
app pub date -
Dec 13, 1991
filing date -
Oct 10, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A parallel rule which includes a gripper body cover and a rule body, with a gripper body base positioned between them. A plurality of float-contact rollers are installed through respective openings in the rule body and gripper body base. The parallel rule is movable across the paper with only the float-contact rollers contacting the paper, thus minimizing any smearing of drawing ink and the leaving of traces upon the drawing paper. The gripper body cover and an associated end body covers are easily attached and removed from the gripper body base, thus allowing for ease of maintenance.
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Cited Art Landscape
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