Geometrical instruments – Area integrators – Electrical
Patent
1978-08-04
1980-02-12
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
33 23K, 33174P, G01B 702, G01B 728
Patent
active
041876148
ABSTRACT:
A tracer head for effecting three dimensional tracing of a model surface in a highly efficient and precise manner is described herein. The tracer head has a base frame, a tracer shaft, a stylus mounted at one end of the tracer shaft for tracing said model surface, a plurality of supports for the tracer shaft provided at at least two locations on the base frame, each support including a member which has a moderate resiliency in the thrust direction of the tracer shaft as well as either a strong resiliency exceeding a certain extent or rigidity in the radial direction of the tracer shaft, displacement detectors mounted on the base frame, a rod spring forming a part of the tracer shaft disposed between the supports for transmitting movement of said stylus to a thrust direction displacement detector and having a moderate resiliency in the radial direction of said tracer shaft for being bent when the stylus is moved laterally, and a cylindrical transmission member for transmitting a movement of said stylus to the radial direction displacement detectors.
REFERENCES:
patent: 2437639 (1948-03-01), Floyd
patent: 2867043 (1959-01-01), Jarret et al.
patent: 3184855 (1965-05-01), Sebastiani
patent: 3750295 (1973-08-01), Nordmann et al.
patent: 3869799 (1975-03-01), Neuer et al.
Abiru Hisanori
Imamura Yoshiaki
Nakao Yoshiaki
Sada Hidetaka
Mitsubishi Jukogyo Kabushiki Kaisha
Stearns Richard R.
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