Hydraulic hoist formed from memory alloy

Details Hydraulic hoist formed from memory alloy Hydraulic hoist formed from memory alloy

2005-05-31

2005-05-31

Look, Edward K. (Department: 3745)

Expansible chamber devices

Mutually relatively movable cylinder or sleeve, member...

Cylinder or sleeve forms working member

Reexamination Certificate

active

06899014

ABSTRACT:
A telescoping hydraulic hoist with tube stages formed from a heat treated aluminum alloy from one of the series 2000, 6000 or 7000 aluminum alloys. These alloys retain good “memory” properties, and under the force of a pressure spike undergoes a momentary elastic deformation which acts as a shock absorber, expanding the tube wall to absorb the peak stresses and resist buckling. The hoist of the invention is thus much lighter than a comparably rated steel hoist, and much more resistant to corrosion.

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patent: 5983778 (1999-11-01), Dawson
patent: 6450083 (2002-09-01), Dawson
Aluminum 7005-T53, MatWeb.com.

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