Sine bar assembly with vertically fixed pivot axis

Details Sine bar assembly with vertically fixed pivot axis Sine bar assembly with vertically fixed pivot axis

2007-08-03

2009-08-11

Smith, R. A. (Department: 2841)

Geometrical instruments

Gauge

Angle

Reexamination Certificate

active

07571549

ABSTRACT:
An L-shaped sine plate is mounted to pivot about an arcuately translating pivot point to maintain the sharp corner height at a constant elevation. In this way, no mathematical formulae need be used to calculate adjustments which would otherwise be necessary if the sharp corner height was changing, as is the case with other sine bars.

REFERENCES:
patent: 2365436 (1944-12-01), Saucier
patent: 3200503 (1965-08-01), Gutknecht
patent: 3432934 (1969-03-01), Schmidt
patent: 3820247 (1974-06-01), Casey et al.
patent: 3862498 (1975-01-01), Klucznik
patent: 4238888 (1980-12-01), Goldsmith
patent: 4398349 (1983-08-01), Bailey
patent: 4586266 (1986-05-01), Leumann
patent: 4660293 (1987-04-01), Kovacs
patent: 4744152 (1988-05-01), Roach et al.

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