Stock material or miscellaneous articles – Perimeter or corner structure of sheet – Channel or u-shaped perimeter
Patent
1989-11-20
1993-03-16
Loney, Donald J.
Stock material or miscellaneous articles
Perimeter or corner structure of sheet
Channel or u-shaped perimeter
428 34, 428 45, 428119, 428121, 428130, 428156, 428167, 428192, 428213, 4285428, 49440, 494891, 494901, 494921, 494961, 52399, 52400, 52403, 52579, 52682, B32B 302, E04C 300
Patent
active
051943093
ABSTRACT:
A flat web-shaped blank is formed with a pair of parallel recesses, each of which defines an angle of less than 90.degree. to permit the faces of the recess to press against each other when the side sections of the blank are pivoted into a U-shape. The pressing of the lateral faces of the recess against each other serves to bias the side sections away from each other. The flat blank can be wound in a coil for storage and transportation purposes. The blank can be readily shaped into a U-shaped guide rail and inserted into the groove of an associated window frame portion. Shoulders on the outside of the side sections of the blank can snap fit into grooves in the walls of the groove of the window frame portion.
REFERENCES:
patent: 1975895 (1934-10-01), Geyer
patent: 2821430 (1958-01-01), Grede
patent: 4454687 (1984-06-01), Baker
patent: 4614061 (1986-09-01), Brocke
patent: 4648207 (1987-03-01), Shibasaki
A/S Spilka Inco Ltd.
Hand Francis C.
Loney Donald J.
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