Geometrical instruments – Area integrators – Electrical
Patent
1981-09-02
1983-03-15
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
33185R, G01B 356, B27G 2300
Patent
active
043763413
ABSTRACT:
A base block is provided having a pair of laterally spaced, downwardly facing and constant radius arcurate bearing surfaces generated about parallel axes lying in a reference plane. A shank assembly including an exposed shank portion is mounted from the base block for oscillation about a third axis paralleling the aforementioned axes and with the exposed shank disposed and swingable in a plane normal to the third axis. The block and shank assembly include co-acting indicating structure operative to indicate when the shank assembly is rotated about the third axis relative to the base block to a position with the exposed shank disposed normal to the aforementioned reference plane.
REFERENCES:
patent: 2413841 (1947-01-01), Minuto
patent: 3148454 (1964-09-01), Anderson
patent: 3672065 (1972-06-01), Voss
Haroian Harry N.
Jacobson Harvey B.
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