Strain gage scale

Claim 1

In a strain gage weighing scale with a load platform, a plurality of individually spaced foot structures supporting said platform, an improvement in each foot structure of a sandwich construction comprising, a bottom support plate, a pair of spaced first fulcrums on said plate, a floating beam plate on said first fulcrums and spaced above and substantially coextensive with said bottom plate, said plates being substantially flat, square, hard metallic plates and interchangeable in said sandwich, a pair of differently spaced and equally offset second fulcrums on said beam plate supporting said platform, strain gage means secured to said beam plate between the closer pair of fulcrums, means connected to said gage means converting the gage resistance change under load to read the weight of the load, an integral, deformable plastic housing supporting and securing the plates and fulcrums together, the sides of said plastic housing including a plurality of vertical barbs, elongated slots in said platform receiving said barbs locking said sandwich together against said platform, and a support cup on the bottom of said housing conformed to flatten under load along and against the support plate thus spreading the barbs along said slots to remove friction therebetween while maintaining said sandwich together on and against said support plate.