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Overload protection for a weigh scale having a flexure beam

  • US 4,361,199 A
  • Filed: 07/01/1980
  • Issued: 11/30/1982
  • Est. Priority Date: 07/01/1980
  • Status: Expired due to Term
First Claim
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1. A weigh scale comprising a base, a platform, a pair of pivot members, a single beam connected between the pivot members and having a central portion of reduced cross sectional area with a group of strain gauges mounted thereon, load transmitting means for deflecting the beam about the pivot members as a function of a load placed on the platform to create strain in the central portion thereof which is sensed by said strain gauges, and overload protection means directly adjacent opposite sides of the central portion of the beam between said pivot members for limiting the amount of deflection of the central portion of the beam to prevent yielding thereof upon experiencing excessive loads.

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