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Title: Instrument for controlling the application of mechanical loads to biological and bicompatible test subjects

Apparatus and methods are disclosed facilitating the application of forces and measurement of dimensions of a test subject. In one arrangement the test subject is coupled to a forcing frame and controlled forces applied thereto. Force applied to the test subject is measured and controlled. A dimensional characteristic of the test subject, such as growth, is measured by a linear variable differential transformer. The growth measurement data can be used to control the force applied. The transducer module receives force and dimensional data from the forcing frame. The transducer module is a separate, microprocessor-based unit that communicates the test data to a controller unit that controls the application of force to the test subject and receives the test data from the transducer module for force control, storage, and/or communication to the user.
 [1];  [2]
  1. (Shelburne, VT)
  2. (Essex Junction, VT)
Issue Date:
OSTI Identifier:
John Chatillon & Sons, Inc. (Greensboro, NC) CHO
Patent Number(s):
US 5452236
Contract Number:
Research Org:
Liveco Inc
Country of Publication:
United States
instrument; controlling; application; mechanical; loads; biological; bicompatible; subjects; apparatus; methods; disclosed; facilitating; forces; measurement; dimensions; subject; arrangement; coupled; forcing; frame; controlled; applied; thereto; force; measured; dimensional; characteristic; growth; linear; variable; differential; transformer; data; control; transducer; module; receives; separate; microprocessor-based; unit; communicates; controller; controls; storage; communication; user; applied thereto; force applied; differential transformer; forces applied; variable differential; linear variable; mechanical loads; measurement data; force control; dimensional data; mechanical load; disclosed facilitating; /702/73/