US 5,103,468 AGranted

Electromechanical counting device with unintentional count prevention structure

AssigneeIng. Fritz Kubler Zahlerfabrik

InventorsKurt Banholzer, Fritz Kubler

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Abstract

An electrochemical counting device in a casing, which contains counters that may be switched by a drive. The drive is connected to a switch armature, which engages a stepping wheel to shift the counters. The drive is also provided with two swivel arms, which are not mechanically connected. Each swivel arm is equipped with a spool. In order to shift the counters, both swivel arms are pivotable oppositely directed in a synchronized manner, perpendicular to the pole face of the permanent magnet. The permanent magnet is arranged between the two swivel arms. Both swivel arms are supported at the casing by a spring. The swivel arms cannot be pivoted accidentally towards each other due to impact and therefore cannot accidentally shift the counters. The electromechanical counting device may therefore be employed, where sudden impact or magnetic interference may occur.

Claims17

Dependent claims

An electromechanical counting device in a casing, which contains counter wheels that may be switched by a drive, comprising a permanent magnet and an electromagnetic coil, which electromagnetic coil is disposed on a first swivel arm which is connected to a switch armature which actuates a stepping wheel to shift said counter wheels;

said counting device further comprising:
a second swivel arm, which is not mechanically connected to said first swivel arm and is equipped with a further electromagnetic coil
both said swivel arms for the shifting of the counter wheels being pivotably mounted to perform a synchronized oppositely directed movement perpendicular to pole faces of said permanent magnet to actuate said stepping wheel;
said electromagnetic coils being respectively fastened on sides of said swivel arms that are facing one another for actuating said swivel arms in said synchronized oppositely directed movement;
said permanent magnet being fastened to said housing between said swivel arms at a location between said electromagnetic coils;
and
a spring means being provided at said swivel arms for preventing unintentional switching of said counter wheels, said spring means resting at said casing and loading said swivel arms in a direction of said synchronized oppositely directed movement.

4 more elements

Dependencies are inferred from the claim text.