PLIABLE-WALL AIR DUCTS WITH INTERNAL EXPANDING STRUCTURES
摘要
Pliable-wall air ducts with internal expanding structures are disclosed. An example air duct system includes a shaft to be disposed within an air duct, to extend in a longitudinal direction, and to be in longitudinal compression. The air duct system also includes a plurality of ribs to be coupled to the shaft and to engage an inner surface of the air duct and a spring to be disposed within the air duct, the spring to be coupled to the shaft. The spring under stress being a contributing factor in both the shaft being in longitudinal compression and the air duct being in longitudinal tension. A method of retrofitting an existing air duct system with internal expanding structure is also disclosed.
申请公布号
WO2012091795(A1)
申请公布日期
2012.07.05
申请号
WO2011US59199
申请日期
2011.11.03
申请人
RITE-HITE HOLDING CORPORATION;PINKALLA, CARY;HEIM, FRANK;GEBKE, KEVIN J.;KAUFMAN, NICHOLAS L.;NIEHAUS, WILLIAM A.
发明人
PINKALLA, CARY;HEIM, FRANK;GEBKE, KEVIN J.;KAUFMAN, NICHOLAS L.;NIEHAUS, WILLIAM A.