I googled the patent number and found the following info. The figures on the patent sketches looks slightly different than the piece. Patent number: US 3497806
THIS LISTING HAS A 40 PIECE DOUBLE TORSION SPRING LOT UP FOR AUCTION. THESE TYPE SPRINGS ARE VERY HARD TO COME BY. THIS LOT IS PERFECT FOR THE MECHANIC, REPAIRMAN, BUILDER, TINKER TYPE, GARAGE, AND SHOP USE.
THIS LISTING HAS A LARGE LOT OF COMPRESSION SPRINGS. THIS ASSORTMENT OF INSTRUMENT LIGHT TO VERY LIGHT LOAD FORCE IN DIFFERENT SHAPES AND SIZES. THE MATERIALS THAT THE SPRINGS ARE MADE FROM IN THE LISTED LOT CAN BE STAINLESS STEEL, 17-7 STAINLESS STEEL, CARBON STEEL, BERYLLIUM COPPER, INCONEL X 750, MUSIC WIRE, ...
THIS LISTING HAS A LARGE LOT OF COMPRESSION SPRINGS. THIS ASSORTMENT OF INSTRUMENT LIGHT TO VERY LIGHT LOAD FORCE IN DIFFERENT SHAPES AND SIZES. THE MATERIALS THAT THE SPRINGS ARE MADE FROM IN THE LISTED LOT CAN BE STAINLESS STEEL, 17-7 STAINLESS STEEL, CARBON STEEL, BERYLLIUM COPPER, INCONEL X 750, MUSIC WIRE, ...
THIS LISTING HAS A LARGE LOT OF COMPRESSION SPRINGS. THIS ASSORTMENT OF INSTRUMENT LIGHT TO VERY LIGHT LOAD FORCE IN DIFFERENT SHAPES AND SIZES. THE MATERIALS THAT THE SPRINGS ARE MADE FROM IN THE LISTED LOT CAN BE STAINLESS STEEL, 17-7 STAINLESS STEEL, CARBON STEEL, BERYLLIUM COPPER, INCONEL X 750, MUSIC WIRE, ...
THIS LISTING HAS A LARGE LOT OF COMPRESSION SPRINGS. THIS ASSORTMENT OF INSTRUMENT LIGHT TO VERY LIGHT LOAD FORCE IN DIFFERENT SHAPES AND SIZES. THE MATERIALS THAT THE SPRINGS ARE MADE FROM IN THE LISTED LOT CAN BE STAINLESS STEEL, 17-7 STAINLESS STEEL, CARBON STEEL, BERYLLIUM COPPER, INCONEL X 750, MUSIC WIRE, ...
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