Apparatus for adjusting biasing force of leaf spring

Details Apparatus for adjusting biasing force of leaf spring Apparatus for adjusting biasing force of leaf spring

1976-08-17

1977-07-19

Lanham, C.W.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

29407, 72389, 72454, B21D 1110

Patent

active

040360423

ABSTRACT:
An apparatus for adjusting biasing forces of leaf springs, for example, those incorporated in an armature of an electromagnet relays. The apparatus is adapted to measure the biasing forces of the leaf springs, to compare the measured values with a reference value, to determine the direction and the extent of the required adjustment and to impart a plastic deformation in the determined direction and by the determined extent thereby to correct or adjust the biasing force to make the later fall within a predetermined range.

REFERENCES:
patent: 283535 (1883-08-01), Tittle
patent: 3459018 (1969-08-01), Miller
patent: 3949588 (1976-04-01), Seo

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