Title: Window construction

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Claims: What I claim:

1. A hollow double transparent closure comprising:

a pair of substantially parallel spaced apart panes of transparent sheet material;

resilient gasket means disposed between the marginal edges of the facing surfaces of said panes, said gasket means having curved compressible faces engaging the adjacent faces of said spaced apart panes and defining an enclosed volume between the facing surfaces of said panes;

a frame circumscribing the periphery of said panes, said frame including elements of a material of a low thermal conductivity containing grooves for receiving the marginal edges of said panes and having walls of the grooves engaging and urging said panes toward one another to compress said gasket means an amount sufficient to produce an airtight sealing contact between the marginal edges of the facing surfaces of said panes and said gasket means; extending tongues on alternate ones of the elements of said frame fitted within the grooves of the adjacent other ones of the elements of said frame;

flushing gas directing means in the enclosed volume between said facing surfaces of said panes, said directing means being spaced across the planes of the respective panes to sub-divide the enclosed volume between the facing surfaces of said panes; and

fastener means for interconnecting the grooved elements of said frame to form a rigid structure.

2. The invention defined in claim 1 wherein said gas directing means is in the form of an array of apertured muntin members.

3. The invention defined in claim 2 including longitudinal tubing interconnecting ones of said muntin members, and porting means for providing communication between said tubing and selected sides of said muntin members.

Other info:

Inventors: Day, Ralph K. (Maumee, OH, US)

Application Number: 361989
Filing Date: 1973-05-21
Publication_date: 1976-01-20
Assignee:
Primary Class(es): 52/171.3
Other Classes:
US Patent Ref:

1852661	Apr, 1932	Larkin	52/171.
1856008	Apr, 1932	Warren	52/398.
1913205	Jun, 1933	Lenhart	52/172.
1956628	May, 1934	Rutishauser	52/616.
2015808	Oct, 1935	Miller	52/1.
2057730	Oct, 1936	Moderau	52/397.
2083622	Jun, 1937	Summers	52/304.
2168216	Aug, 1939	Kennedy	52/171.
2348297	May, 1944	Huddle	52/398.
2354341	Jul, 1944	Verhagen	52/399.
2565937	Aug, 1951	Verhagen	52/304.
2667951	Feb, 1954	Gall	52/399.
2756467	Jul, 1956	Etling	52/304.
2918708	Dec, 1959	Sharp	52/397.
3128509	Apr, 1964	Stotz	52/656.
3212179	Oct, 1965	Koblensky	52/398.

Other Refs: 900,766

Jul, 1962	UK

Primary Examiner: Murtagh, John E.
Assistant Examiner:
Attorney: Wilson; David H.