Double sash structure
AssigneeYoshida Kogyo K.K.
InventorHiroyuki Ebata
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Abstract
In a double sash structure comprising a first sash facing to the outside and a second sash facing to the inside, a window frame of the first sash is formed of a metallic material and a window frame of the second sash, which is formed of a non-metallic material having a low heat conductivity, is disposed contiguously to the window frame of the first sash. By virtue of the low heat conductivity of the window frame of the second sash, lowering of the temperature in the room and formation of dew by condensation of moisture can be prevented. Accordingly, a double sash structure excellent in the heat-insulating property and having a beautiful appearance and an improved strength, which can be readily assembled, can be provided.
Claims6
A double sash structure for attachment in and around an opening in a room structure, a first window frame supporting said first sash and having first engagement means integral therewith, a second sash disposed on the indoor side of the room structure, and a second window frame supporting said second sash and having second engagement means integral therewith adapted for positive coupling with said first window frame, said first window frame and said first sash being formed of a metallic material and said second window frame and second sash a synthetic resin material having a low heat conductivity, said first and second engagement means each comprising a projecting engagement member extending toward the other and operative upon attachment of said second frame to said first frame to securely fix the first and second frames together.
Dependencies are inferred from the claim text.