Title:
切溝付絶縁ボード
Document Type and Number:
Japanese Patent JP4125799
Kind Code:
B2
Abstract:
Ducts are formed from rigid or semi-rigid insulation boards by forming a plurality of longitudinally extending, spaced apart, parallel kerfs in a first major surface of each of the insulation boards which is adapted to be the interior surface of the duct. When the insulation board is formed into a duct of the preselected dimensions, the shoulders of the kerfs adjoining the interior surface of the duct abut and, preferably, the insulation material in the shoulders of the kerfs is compressed. The flexibility of the insulation boards, in the direction of the widths of the insulation boards, is controlled by increasing the depths and/or the widths of the kerfs and/or decreasing the spacing between the kerfs to make the insulation board more flexible and by decreasing the depths and/or the widths of the kerfs and/or increasing the spacing between the kerfs to make the insulation board less flexible.
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Inventors:
Kent Earl Matthew
Eric G. Shekel
Eric G. Shekel
Application Number:
JP24338096A
Publication Date:
July 30, 2008
Filing Date:
September 13, 1996
Export Citation:
Assignee:
Shuller International Incorporated
International Classes:
E04F17/04; F16L59/02; B32B3/30; F16L59/10; F16L59/14; F16L59/147; F24F13/02
Domestic Patent References:
| JP3030915A | ||||
| JP3282096A | ||||
| JP2182450A | ||||
| JP58065396A | ||||
| JP60134996U |
Attorney, Agent or Firm:
Masao Okabe
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi