Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
A window frame comprising a pair of vertical members identical in cross-section but reversed and in mirror image with respect to each other and a pair of transverse top and bottom members forming, respectively, the header and sill; said top and bottom members being identical but inverted and reversed with respect to each other; said sill being provided with an upper wall which slopes transversely and downwardly toward the exterior of the window frame; said header having a lower wall which slopes upwardly toward the interior of the window frame and an upper outer sash and a lower inner sash.
Claim 2
Dependent Claim
100 words
A window frame comprising a pair of vertical members identical in cross-section but reversed and in mirror image with respect to each other and a pair of transverse top and bottom members forming, respectively, the header and sill; said top and bottom members being identical but inverted and reversed with respect to each other; said sill being provided with an upper wall which slopes transversely and downwardly toward the exterior of the window frame; said header having a lower wall which slopes upwardly toward the interior of the window frame and an upper outer sash and a lower inner sash.
Claim 3
Dependent Claim
34 words
The window frame of claim 1 in which said sill and said header each have a respective member extending into the window area, each of said members extending asymmetrically of said sill and header.
Claim 4
Dependent Claim
76 words
The window frame of claim 2 in which said sill further comprises an upward-facing channel and each of said vertical members comprises walls forming a respective channel extending into said window frame, and in which said channel of said sill coacts with said channels of said vertical members to form a continuous frame therewith; and said header further comprising a downward-facing channel which is displaced toward the interior of said window frame from said vertical channels.
Claim 5
Dependent Claim
28 words
The window frame of claim 3 wherein each of the upper and outer sash and the lower and inner sash engages with a complete sealing frame when closed.
Claim 6
Dependent Claim
76 words
The window frame of claim 2 wherein each of said vertical members comprises walls forming a respective channel extending into said window frame, and in which said sill and header each have a substantially horizontal wall spaced from said sloping walls and at the periphery of said window frame; said horizontal walls extending across the ends of said vertical channels; and said window frame further comprising means for sealing said horizontal walls to said vertical walls.
Claim 7
Dependent Claim
40 words
The window frame of claim 1 in which said vertical members have opposite inner sash guideways integral therewith and opposite outer sash guideways integral therewith; said outer sash guideways being spaced closer to each other than said inner sash guideways.
Claim 8
Dependent Claim
82 words
The window frame of claim 6 in which each of said vertical members has walls forming a channel extending into said window frame; each of said channels being spaced further from the interior of the window than from the outer side of the window; said upper and outer sash riding against the end of a channel wall; said lower and inner sash riding against the surface of said channel wall which extends normally to the surface against which said upper sash rides.
Claim 9
Dependent Claim
61 words
The window frame of claim 7 wherein each of said vertical members has a plurality of longitudinal fastening receiver channels forming fastener receiving members; said sill and header each having a substantially horizontal wall spaced from said sloping walls and at the periphery of said window frame, said sill and header further having means registering and cooperating with said fastener channels.