초록 ▼

A spacer frame bar for insulated windows or other insulated glass panels. The bar includes a tubular spacer member having first and second side webs for engaging the spaced apart glass panes, and upper and lower webs spanning between the side webs. The upper web is provided with a series of vertical

A spacer frame bar for insulated windows or other insulated glass panels. The bar includes a tubular spacer member having first and second side webs for engaging the spaced apart glass panes, and upper and lower webs spanning between the side webs. The upper web is provided with a series of vertical corrugations, which serve to increase the length of the thermal conductive path across the upper web. The corrugations are also arranged so that only the upper edges thereof are exposed to sunlight passing through the window, thereby minimizing thermal gain due to absorption of solar radiation. Staggered rows of slits may be formed in the channels of the corrugations to as to further increase the length of the conductive path. The channels may also be filled with an insulating material, such as a resilient foam material. The invention also provides a two-piece construction in which the top web clips onto the upper edges of the side webs.

대표청구항 ▼

1. A spacer frame bar comprising:an elongate tubular spacer member having first and second side webs for engaging first and second glass panes of a window assembly in spaced relationship, and an upper web for facing inwardly towards an interpane space between said panes and a lower web for facing ou

1. A spacer frame bar comprising:an elongate tubular spacer member having first and second side webs for engaging first and second glass panes of a window assembly in spaced relationship, and an upper web for facing inwardly towards an interpane space between said panes and a lower web for facing outwardly from a perimeter of said window assembly; said lower web of said spacer member being substantially free of openings; and said upper web of said spacer member having a plurality of openings for passage of air therethrough and comprising: at least first and second corrugations formed in said upper web, each said corrugation defining an upwardly extending ridge portion and a downwardly extending channel portion, so that said corrugations form an elongate thermal energy conductive path across said upper web which is greater in length than said spacer width between said side webs; said corrugations further being oriented so that only an upper edge of each said ridge portion is exposed to solar radiation in said interpane space between said glass panes and said channel portions of said corrugations are substantially shaded from solar radiation by adjacent corrugations, so that said upper web of said spacer member forms said elongate conductive path without causing increased thermal gain of said spacer member when said window assembly is exposed to said solar radiation.