Measuring and testing – Muscular force
Patent
1997-06-24
1999-04-27
Biegel, Ronald
Measuring and testing
Muscular force
482 93, G01L 104
Patent
active
058981110
ABSTRACT:
A lift box and system simulates the lifting of a crate or box having cutout handles disposed therein. The lift box includes the normal hand hole cutouts, a structural frame adapted to hold a variable amount of disc-type weights and an outer shell which covers the frame and creates an inside cavity which contains the weights. A top surface of each hand hole cutout (the handle) is formed from a separate piece which is isolated from the shell and coupled to the frame through load cells. That arrangement prevents the user from applying any lifting force to the side walls of the lift box, which would reduce the overall force recognized by the load cells. To further the goal of force isolation from sides of the box, the handles include guards to convey all forces applied from the users hands directly to the load cells
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Rowland G. Hazard, et al.; Dynamic Lifting Capacity: The Relationship Between Peak Force and Weight as an Indicator of Effort, Journal of Spinal Disorders, vol. 4 No. 1, pp. 63-67.
Rowland G. Hazard, M.D., et al., Lifting Capacity, Spine vol. 17, Apr. 13, 1992.
Product Material for the FCE System, Blankenship Corporation Date Unknown.
Product Material for the System Interface, Blankenship Corporation Date Unknown.
Blankenship Keith L.
Van Wagoner Earl
Biegel Ronald
The Blankenship Corporation
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