Spring scale

Details Spring scale Spring scale

2006-07-18

2006-07-18

Gibson, Randy W. (Department: 2841)

Weighing scales

Self-positioning

Electrical current generating or modifying

C073S862621, C073S862626, C073S862636

Reexamination Certificate

active

07078631

ABSTRACT:
A spring scale, in particular for weighing loads in the μg-mg range, comprises a load platform suspended by at least three flexural springs in a surrounding frame, and has bridge-connected strain gauges arranged for measuring strain on one side of the flexural springs. The flexural springs extend in succession along substantially the whole periphery of the load platform in a gap between the load platform and the inner edge of the frame, and an attachment spot on the load platform for every flexural spring is arranged substantially directly opposite or past an attachment spot on the inner edge of the frame for a next flexural spring in the succession of springs. Preferably, the spring scale is made in one piece, and manufactured by means of semiconductor process technology.

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patent: 1 052 748 (2000-11-01), None
patent: 2 296 977 (1996-07-01), None

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