Measuring and testing – Dynamometers – Responsive to force
Reexamination Certificate
2006-02-28
2006-02-28
Noori, Max (Department: 2855)
Measuring and testing
Dynamometers
Responsive to force
Reexamination Certificate
active
07004040
ABSTRACT:
A mechanism for reducing horizontal force in load measurement is presented. The mechanism includes a structure having surfaces of nonuniform radii of curvature (e.g., oblate spheroid surfaces) at both ends. The ends of the structure contact a force-sensor coupling element and a base-coupling element, forming two interfaces. Each interface includes a contact area between a convex surface and a concave surface. When a horizontal force is applied, the contact area at each interface shifts, allowing the structure to tip from the vertically aligned position that it is in when no horizontal force is applied. Compared to conventional mechanisms, the structure of the invention has a lower effective height because interfaces between oblate spheroid surfaces allow a larger angle of deflection than flat interfaces. The oblate spheroid interfaces also allow deflection to occur with less wear and tear at the interfaces compared to the flat-interfaced structures.
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patent: 5515829 (1996-05-01), Wear et al.
patent: 5538364 (1996-07-01), Huntsman
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Hall Robert J.
Johnson Thomas H.
Avery Weigh-Tronix, LLC
DLA Piper Rudnick Gray Cary US LLP
Noori Max
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