Measuring and testing – Dynamometers – Responsive to force
Patent
1989-02-27
1990-12-25
Ruehl, Charles A.
Measuring and testing
Dynamometers
Responsive to force
7386239, 7386253, 116203, 368 1, 368 89, G01D 112, G01D 2102, G04F 700
Patent
active
049794000
ABSTRACT:
A safety belt assembly of the present invention measures the amount of force exerted on the assembly and also the point in time when a force was exerted on the assembly. The assembly includes a first and second member associated with one another, mechanism associated with the first and second members for resiliently restraining relative movement and movably retaining said members with respect to one another; a mechanism responsive to relative movement of the first and second members for enabing a measurement of force and indicating a point in time when a force was exerted on the assembly; and a mechanism for securing the assembly to a safety belt and/or a buckle or anchor. A chemical timer for measuring the elapsed time since a force was exerted on the assembly. The chemical timer includes micro-encapsulated reactants which are frangible in response to a force exerted on the assembly for beginning reaction of a time sensitive chemical reactive system which produces a measurable change over a predetermined time period.
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Proprietary Technology, Inc.
Ruehl Charles A.
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