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US 5,174,154 AGranted
Isometric force measuring device
AssigneeGreenleaf Medical Systems, Inc.
InventorGlenn R. Edwards
Life of this patent
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Abstract
An isometric force-measuring device is comprised of first and second opposed force-bearing surfaces. An incompressible, nonfluid material is positioned between the first and second surfaces. The material is capable of building up pressure in response to the application of force to the force-bearing surfaces. A pressure transducer is responsive to the pressure stored in the material for producing an output signal representative of the force.
Claims1
A method for measuring an isometric force, said method comprising the steps of:
- receiving a force from a user's thumb through a push button means;
- receiving a force from at least one of a user's fingers through a plate means;
- building up pressure in response to the application of force to said push button means and said plate means in an incompressible, elastomeric material positioned between said push button means and plate means without producing any tactile feedback to the user;
- and
- producing an output signal representative of said force through a pressure transducer means responsive to said pressure stored in said material.
2 more elements
Dependencies are inferred from the claim text.