Digital weighing scale

Details Digital weighing scale Digital weighing scale

1977-11-21

1979-11-06

Miller, Jr., George H.

Weighing scales

Self-positioning

Electrical current generating or modifying

177256, G01G 314, G01G 2108

Patent

active

041732634

ABSTRACT:
A digital platform scale having a base and movable cover thereon with a lever system in the base converting vertical movement to horizontal lever movement, spring means connected to the base and lever to counter-balance the lever movement and a differential transformer connected to the lever system and to an electrical digital readout to display weight, an improvement is provided that disposes the spring horizontally in the base and connected to the lever system at its point of maximum movement. A differential transformer is interposed as part of the connection between the spring and the lever system and axially aligned with the spring. The transformer is an outer fixed winding in the form of a hollow cylinder connected to the readout and the inner core, connecting the spring and lever system, is spaced from the winding within the cylinder avoiding contact therewith whereby the core is the sole integral direct link of the balance system at its greatest travel for maximum sensitivity and minimum friction in the system.

REFERENCES:
patent: 3469645 (1969-09-01), Provi et al.
patent: 3692129 (1972-09-01), Pratt et al.
patent: 3724574 (1973-04-01), Hutchinson et al.
patent: 3780818 (1973-12-01), Lumby et al.
patent: 3786678 (1974-01-01), Kunz
patent: 3887797 (1975-06-01), Nishiguchi

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