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Weighing device for fork lift truck

  • US 3,910,363 A
  • Filed: 12/27/1974
  • Issued: 10/07/1975
  • Est. Priority Date: 12/27/1974
  • Status: Expired due to Term
First Claim
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1. A weighing device for use with a fork lift truck and the like having forks to lift loads comprising:

  • a stationary plate mounted to the fork lift truck, a moveable plate, first flexure means mounted to the moveable and stationary plates to maintain the plates in substantially vertical parallel relationship, the forks being mounted to the moveable plate, the weight of loads introduced on the forks causing the moveable plate to be pulled vertically downwardly, load cell means interposed between the stationary and moveable plates, second and third flexure means coupled to opposite ends of the load cell means, first and second mounting means connecting the second and third flexure means to the stationary and moveable plates respectively, the second and third flexure means responding in equal and opposite direction to bending moments resulting from the cantilever effect caused by the location of loads on the forks from toe to heel to prevent the load cell means from being responsive to said cantilever effect, the load cell means being responsive to vertical tension forces transmitted thereto by loads under measurement on the forks to derive an accurate indication of the weight thereof.

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