Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1980-10-14
1982-08-03
Gilden, Leon
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29418, 295271, 52731, 264 466, 264 467, 264139, B23P 1700
Patent
active
043421440
ABSTRACT:
A method of manufacturing a thermally insulating sash bar from an elongated hollow metallic sash bar including a pair of spaced outer members connected by a pair of spaced first and second inner members so as to define between the outer members a pair of longitudinally extending first and second channels and a longitudinally extending hollow chamber. A mass of foamable and thermally insulating synthetic resin is introduced into the first channel and then cured to fill the latter with the cured or thermally insulating synthetic resin. Then, a longitudinal gap is formed in and along each of the first and second inner members. The longitudinal gap in the second inner member is covered with a thermally insulating strip. Finally, a mass of the foamable and thermally insulating synthetic resin is introduced into the second channel and then cured to fill the latter with the cured or foamed thermally insulating synthetic resin.
REFERENCES:
patent: 3856902 (1974-12-01), Kirkpatrick
patent: 3992769 (1971-11-01), Jackson
patent: 4185439 (1980-01-01), Bischilici
Gilden Leon
Yoshida Kogyo K.K.
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