|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 1 인용 특허 : 1|
A process to manufacture ice skate blades and the ice skate blades that result from this process where the blades of made from a nitridable steel hardened to a medium hardness (Rockwell C 38-55) then nitrides by a plasma nitriding process disclosed which prevents hardness loss in the steel while adding very hard nitride layer of a thickness in excess of 50 microns that gradually drops to the base steel hardness. The plasma nitriding process control is enhances dy addition of an intert gas and by the pulsing of the plasma field on and off for millisecond ...
I claim: 1. A steel ice skate blade, having two sides, the ice skate blade comprising: a first part of a substantially constant first hardness about a center plane of the blade and sandwiched between a pair of opposed second parts; each of said pair of second parts of between about 50 and 200 microns thickness and of an increasing hardness that varies gradually between said first part and an outer surface on each side of the blade from said first hardness to a second hardness greater than said first hardness wherein the blade is manufactured from a stai...