Ultra sound welded window frames

Details Ultra sound welded window frames Ultra sound welded window frames

1988-05-31

1989-08-15

Kannan, Philip C.

Movable or removable closures

Frame with closure feature

49DIG2, 49506, 52656, E06B 104

Patent

active

048562300

ABSTRACT:
A window frame made, for example, of a vinyl material is secured together by the utilization of corner key pieces at each of the four corners joining the header and the sill with a pair of side frames. After the frame pieces have been assembled they are permanently secured by the use of ultra-sound welding.

REFERENCES:
patent: 4042288 (1977-08-01), Litchfield
patent: 4090799 (1978-05-01), Crotti et al.
patent: 4286716 (1981-09-01), Budich et al.
patent: 4570406 (1986-02-01), DiFazio
patent: 4739600 (1988-04-01), Lynch et al.

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