Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1996-03-01
1999-03-23
Biegel, Ronald L.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
340402, G01C 916
Patent
active
058844074
ABSTRACT:
A motion sensor has a carrier which rotatably supports a shaft. One or more eccentric weights are mounted on the shaft for rotation therewith. The carrier is supported by pins which are normal to the shaft and rotatable on bearings. One of the pins carries a disk with marks in the form of lines, and a sensing device for the marks is disposed adjacent the disk. This pin further carries a transmission component which cooperates with a transmission component on the shaft. When an object on which the motion sensor is mounted is tilted about the axis of the shaft, the weights are displaced from an equilibrium position. The weights return to the equilibrium position under the action of gravity thereby rotating the shaft which, in turn, rotates the disk via the transmission components. If the object is tilted about the axes of the pins, inertia causes rotation of the disk. The rotation of the disk is detected by the sensing device which can trigger an alarm.
REFERENCES:
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patent: 3975831 (1976-08-01), Jysky et al.
patent: 4385449 (1983-05-01), Miller
patent: 5174035 (1992-12-01), Yamazaki
JP 62-197712 (A), Patent Abstracts of Japan P-667 16 Feb. 1998, vol. 12/No. 51.
Soviet Patent Abstracts, SU-S, Instrumentation, Measuring and Testing, Week 9317, S-02,93-142252/17. SU 1737272 A1.
M. Pollerman, Bauelemente der physikalischen Technik, Springer Verlag, Berlin-Gottingen-Heidelberg 1955, S. 100-101.
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