Measuring and testing – Dynamometers – Responsive to force
Patent
1998-03-30
2000-02-22
Fuller, Benjamin R.
Measuring and testing
Dynamometers
Responsive to force
G01L 116
Patent
active
060266945
ABSTRACT:
The force sensing device of the present invention provides an elastomeric spacer coupled between a base member and platform structure. The characteristics of the spacer material allow the spacer to be linearly deformable upon application of force, and this deformation region is known as the linear travel distance of the spacer. The remaining region has substantially no additional deformation with respect to force applied, and is known as the non-deformable distance of the spacer. A sensing mechanism built directly into the device provides a means for sensing the linear travel distance upon various applications of force. More specifically, the sensory mechanism includes a movable and fixed portion respectively, separated by a distance equal to the aforementioned linear travel distance. The sensing mechanism can be of a type that detects electro-magnetic, electro-optical or any other electrical property or event, but is preferably a variable capacitor having a first and second electrode as the movable and fixed portions. Finally, an electrical circuit may be connected to the sensing mechanism to measure the change in electrical signal in direct response to the changed distance between the movable and fixed portions.
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Fuller Benjamin R.
Reidelbach, Jr. Charles F.
Serena Industries Incorporated
Thompson Jewel V.
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