Static structures (e.g. – buildings) – Composite prefabricated panel including adjunctive means – Sandwich or hollow with sheet-like facing members
Patent
1979-11-27
1981-10-27
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Composite prefabricated panel including adjunctive means
Sandwich or hollow with sheet-like facing members
52656, 52737, 52738, 403395, 403401, 403298, E04C 238
Patent
active
042965870
ABSTRACT:
A spacer tube for a hermetically sealed double glazed window in accordance with one aspect of the invention is formed from an elongated strip of metal bent into a hollow elongated tubular shape. The spacer tube has opposing side wall portions and a base extending between and connecting the side wall portions. The spacer tube also includes a further wall spaced from the base, such further wall defining a region wherein the longitudinal edges of the strip extend toward each other. That surface of the base which faces into the interior of the spacer tube has a plurality of closely spaced ridges therein, the ridges being spaced apart in the lengthwise directon of the spacer tube and the individual ridges extending generally transversely of the longitudinal axis of the tube. The ridges are located at least in the regions adjacent the ends of the spacer tube thereby, in use, to provide for locking engagement with teeth on the arms of corner pieces when inserted endwise into the ends of the spacer tube.
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Custom Rollforming Company Limited
Ridgill, Jr. James L.
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