|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||454/121; 454/069; 454/156; 165/043; 251/901|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 6 인용 특허 : 36|
A valve includes a film having side edges and an opening to extend across a passage in a housing of a HVAC system. The film has a circular aperture in the film adjacent each rounded corner of each opening for relieving stress. Either or both of the leading edge and the trailing edge of the film are undulated to prevent deformation of the edges. A pair of racks is disposed on the film and sprockets engage the teeth of the racks for moving the racks and the film linearly. Each rack includes a strap and bearing member for retaining the associated sprocket i...
What is claimed is: 1. A heating, ventilation and air conditioning (HVAC) system comprising: a housing defining an air passage for directing air flow through said housing, an evaporator core and a heater core being supported in said housing for exchanging heat with air passing through said passage, a film having side edges and a plurality of elongated openings disposed in parallel relationship between said side edges and separated by strips of said film and supported by said housing to extend across said passage, a pair of racks attached to spaced ones ...