US 4,733,736 A · Load cell assembly

Abstract

A load cell assembly for a vehicle scales and other weighing applications includes a load cell configured to weigh in tension and substantially eliminate sensitivity to transversely and obliquely directed forces includes upper and lower alignment assemblies. Each alignment assembly includes three members: an intermediate member having an upper and lower pair of aligned curved pivots disposed perpendicularly to one another and received within aligned, curved channels in adjacent upper and lower members. The lower member of the upper assembly supports the entire load cell assembly and the upper member of the lower assembly supports the scale platform. Extending between the upper member of the upper assembly and the lower member of the lower assembly is a load cell which is placed in tension to measure the load applied to the assembly. Pivoting motion and readjustment of the load cell assembly in response to transverse and obliquely directed forces renders the load cell substantially insensitive to all but vertically directed loads.

Claims19

Dependent claims

A load cell assembly for weighing, calibrating and similar applications comprising, in combination,

a first alignment assembly having a first top member, a first intermediate member and a first bottom member, first pivot means disposed between said top member and said first intermediate member for permitting pivoting motion between said just recited members generally about a first axis, and second pivot means disposed between said first intermediate member and said first bottom member for permitting pivoting motion between said just recited members generally about a second axis normal to said first axis;
a second alignment assembly having a second top member, a second intermediate member and a second bottom member, third pivot means disposed between said second top member and said second intermediate member for permitting pivoting motion between said just recited members generally about a third axis and fourth pivot means disposed between said second intermediate member and said second bottom member for permitting pivoting motion between said just recited members generally about a fourth axis normal to said third axis, and
a load cell extending from said first top member to said second bottom member.

Dependencies are inferred from the claim text.

Load cell assembly

Life of this patent

Load cell assembly

Life of this patent

Abstract

Claims19