Back to results
US 5,516,594 AGranted
Ni-Sn Plated fasteners for clothing
AssigneeScovill Japan Kabushiki Kaisha
InventorKenji Hasegawa
Life of this patent
Estimating the term…
Abstract
Fasteners which are nonallergenic and permit magnetic detection of lost or broken needles in the clothing on which they are used, comprising a fastener body, an undercoat of nonmagnetic Ni--P alloy plating, and a top layer of nonmagnetic Ni--Sn alloy plating. The compositional ratio by weight of the Ni--Sn alloy is in the range of Sn:Ni=1:2.2.about.2.8.
Claims3
A substantially nonallergenic and nonmagnetic fastener for clothing that permits magnetic detection of metallic objects such as needles in the clothing, the fastener comprising:
- a fastener body;
- an undercoat of nonmagnetic nickel-phosphorus alloy plating on the fastener body, said nickel-phosphorus alloy having a nickel-phosphorus weight ratio of 9:1;
- and
- a top layer of nonmagnetic, nonallergenic nickel-tin alloy plating, said nickel-tin alloy having a tin:nickel weight ratio in the range of 1:2.2 to 1:2.8, the undercoating being present in a thickness effective to permit the top layer to have a thickness effective to inhibit an allergic reaction due to the undercoating.
1 more element
Dependencies are inferred from the claim text.