Measuring and testing – Miscellaneous
Patent
1984-05-24
1986-01-21
Levy, Stewart J.
Measuring and testing
Miscellaneous
33568, 5116581, 51216R, G01D 1130
Patent
active
045650942
ABSTRACT:
Apparatus is described for precise placement of an object or sensing or measurement of a parameter using a plurality of tilt plates in substantially parallel spaced apart relationship forming a stack. Adjacent pairs of tilt plates in the stack are joined by unitary hinge plates secured to respective edges of each adjacent pair of tilt plates on one side. Each hinge plate is constructed and arranged of rigid elastic material for controlled elastic bending and recovery under applied bending moment stress. A plurality of spreader elements are provided operatively coupled to each pair of adjacent tilt plates at the side opposite the respective hinge plate. A spreader actuator actuates the spreaders for imparting tilting motion to the respective pair of tilt plates by varying the spacing of the pair of adjacent tilt plates relative to each other at one side imparting bending moment stress to the hinge plate on the other side. An object or sensor coupled to the top or end of the stack may be precisely placed, positioned or moved by controlled actuation of the spreaders. Parameters accurately measured by using, for example, temperature sensitive, pressure sensitive or weight sensitive motional response spreader elements. Passive motion sensors or transducers may be substituted for the spreaders for sensing motin or deflection. Strain gauges may be applied to the hinge plates for the same purpose. The apparatus is applied, by way of example, in retrofitting a conventional grinder for fine adjustment and precise placement of a workpiece relative to a working tool. Other applications include work holders, manipulators, robots, measuring instruments, scales, springs, bellows and deflection devices.
REFERENCES:
patent: 987237 (1911-03-01), Kerr
patent: 2397300 (1946-03-01), Tilton
patent: 3135112 (1964-06-01), Farley
patent: 4457114 (1984-07-01), Hennenfent
Kane, Jr. Daniel H.
Levy Stewart J.
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