Patent ID: 9255832
Filing Date: 2016-02-09
CPC Classification: G01G,G01L

Claim Text:
1. A load cell comprising: a longitudinal body that extends along a longitudinal axis and that comprises a force input element, a force output element, and a bending beam, wherein said bending beam is arranged axially between and connected to said force input element and said force output element, wherein said bending beam includes strainable measuring parts, and wherein said bending beam is arranged and configured so that a force to be measured, which is applied perpendicularly to said longitudinal axis onto said force input element, will cause bending of the bending beam and therewith a measurable strain in said strainable measuring parts; strain gages applied on said strainable measuring parts of said bending beam so as to measure said measurable strain; and a hermetically sealed enclosure that encloses said strainable measuring parts and said strain gages on said strainable measuring parts, and that comprises a flexurally stiff pipe sleeve and two ring elements, wherein each one of said ring elements respectively comprises a respective flexurally soft membrane that is more flexible than said pipe sleeve, said pipe sleeve extends longitudinally and coaxially along said longitudinal axis and outwardly around said strainable measuring parts and said strain gages, said ring elements are each respectively connected to and protrude radially outwardly from said longitudinal body, said two ring elements are respectively hermetically sealedly connected to opposite ends of said pipe sleeve and support said pipe sleeve relative to and spaced radially outwardly away from said longitudinal body with said flexurally soft membranes interposed between said pipe sleeve and said longitudinal body, and said pipe sleeve has a cylindrical outer surface parallel to and coaxial about said longitudinal axis.