Shape memory metal actuator

Details Shape memory metal actuator Shape memory metal actuator

1985-02-27

1985-12-03

Feinberg, Craig R.

Illumination

Light source and modifier

Adjustable or repositionable modifier

362325, 60527, 337140, 428906, F03G 706

Patent

active

045569347

ABSTRACT:
A shape memory metal (SMM) actuator includes an SMM actuator element mounted to an end fitting. An end portion of the actuator element adjacent the end fitting is cold formed to a thickness no more than 40% of the original thickness of the actuator element. This cold formed region extends by about 5 times the diameter of the actuator element away from the end fitting. The cold formed end region remains in the austenitic state, and is therefore relatively hard and strong. For this reason, the tendency of the actuator element to break at the end fitting is reduced, even though the end fitting acts as a temperature sink and maintains the cold formed end region below the transition temperature of the SMM actuator element.

REFERENCES:
patent: 1591754 (1926-07-01), Gates
patent: 2846543 (1958-08-01), Sivacek
patent: 4490975 (1985-01-01), Yaeger et al.
patent: 4524343 (1985-06-01), Morgan et al.
Cooper, et al. Investigations of the Unique Memory Properties of 55-Nitinol Alloy, 1/1969; pp. 265-274.
Baker, The Shape-Memory Effect in a Titanium-35 wt. % Niobium Alloy, 1/1971, pp. 92-100.
Jackson et al., 55-Nitonol-The Alloy with a Memory: Its Physical Metallurgy, Properties, and Applications, 1/1972, pp. 1, 2 and 77-79.

Affiliated with

Also associated with

Rating

Shape memory metal actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shape memory metal actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shape memory metal actuator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1397633