Aluminum extrusion with multiple thermal brake and method of mak

Details Aluminum extrusion with multiple thermal brake and method of mak Aluminum extrusion with multiple thermal brake and method of mak

1992-06-17

1993-06-08

Friedman, Carl D.

Metal working

Method of mechanical manufacture

Structural member making

5230914, B23P 1300

Patent

active

052168107

ABSTRACT:
A method of making an aluminum extrusion having a pair of thermal brakes therein and the extrusion, comprising the steps of providing an aluminum extrusion having a pair of side walls, upper and lower wall members, each secured to each of the side walls and a chamber forming a portion of each of the wall members spaced from the side walls, one of the chambers having a continuous bridge member forming a wall thereof and forming the only bridge connecting portions of the upper wall member, the other of the chamber having a discontinuous bridge member forming a portion of a wall thereof, and a "V"-shaped member bridging the discontinuity in the discontinuous bridge member, disposing thermal braking material in the chamber having a continuous bridge member and allowing the thermal braking material to set in the chamber, providing a continuous slit in the continuous bridge member and the V-shaped member to cause a thermal separation of the side walls from each other, placing a leak preventing member in the V-shaped member and over the continuous slit therein, filling the V-shaped member with a thermal braking liquid and allowing the thermal braking material to set in the V-shaped member.

REFERENCES:
patent: 3204324 (1965-09-01), Nilsen
patent: 3605994 (1971-09-01), Parlette
patent: 3786609 (1974-01-01), Difazio
patent: 3832818 (1974-09-01), Nohr
patent: 4185439 (1980-01-01), Bischlipp et al.
patent: 4342144 (1982-08-01), Doguchi
patent: 4688366 (1987-08-01), Schmidt

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