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US 4,144,057 AGranted
Shape memory alloys
AssigneeBBC Brown, Boveri & Company, Limited
InventorsKeith Melton, Olivier Mercier
Life of this patent
Estimating the term…
Abstract
A shape memory alloy is provided, having a base of nickel and titanium, and additionally comprising up to 30 wt.% copper, and from 0.01 to 5 wt.% of at least one element selected from the group consisting of aluminum, zirconium, cobalt, chromium and iron. A method of making the above alloys is provided, and articles made therefrom are exemplified.
Claims24
A shape memory alloy whose base elements are nickel and titanium, which consists essentially of:
- a mixture of 23 to 55 wt.% nickel, from 40 to 46.5 wt.% titanium and 0.5 to 30 wt.% copper with the balance being from 0.01 to 5 wt.% of at least one element selected from the group consisting of aluminum, zirconium, cobalt, chromium and iron.
Dependencies are inferred from the claim text.