Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1997-05-16
1999-01-12
Hellner, Mark
Optics: measuring and testing
Range or remote distance finding
With photodetection
267 6419, G01C 0308, F16F 904
Patent
active
058596925
ABSTRACT:
An air spring apparatus with an internal height sensor is provided. The air spring includes an end cap member, a piston member and a flexible annular sleeve connected therebetween forming a sealed air chamber. The height sensor includes a sensing element and an indicating element and is mounted within the air chamber. The sensing element is mounted to one of the end cap member and piston member. The indicating element has a first portion connected to the end cap member, a second portion connected to the piston member, and an elastic member connected therebetween. The length of the elastic member defines an indicating level sensible by the sensing element such that movement of the end cap member relative to the piston member produces a much smaller proportional movement of the indicating level relative to the sensing element. This proportion reduction of movement allows a smaller sensor to measure a relatively large change in height.
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Horvath Agoston
Ross, Jr. Herbert G.
Hellner Mark
Rochester Gauges, Inc.
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