|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||49/504 ; 49/161 ; 49/449 ; 49/505|
|발명자 / 주소|
|인용정보||피인용 횟수 : 30 인용 특허 : 11|
Extruded frame elements include a pair of opposed parallel jambs, a sill, and a header. A selected pair of opposite frame elements each contain a longitudinal channel; and metal, beam-like reinforcing members within these channels. The other two frame elements may also have reinforcing members. The sill is stepless and has a generally uniform, inside-to-outside downward slope. An upward-projecting lip on the sill, and a downward-projecting lip on the lifting ledge of the lower rail, have engaging surfaces which limit the outward deflection of the lower r...
A window assembly including a frame, said frame defining a rectangular opening; an outer sash unit mounted to said frame and an inner sash unit mounted to said frame; said sash units being disposed in said rectangular opening; said frame comprising a pair of opposed parallel jambs, a sill overlapping said jambs at their lower ends, and a header overlapping said jambs at their upper ends; said jambs, said sill and said header each comprising extruded elements; wherein a selected pair of first and second extruded elements of said frame, which are opposite ...