Sliding valve
AssigneeDelphi Technologies, Inc.
InventorsGerald Goupil, Gregory Kowalski, Mark Stevenson
Life of this patent
Estimating the term…
Abstract
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 the 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 a bearing member for retaining the associated sprocket in engagement with the teeth. The bearing member is in rolling engagement with a bearing surface of the associated strap as it rotates with the sprockets.
Claims33
A heating, ventilation and air conditioning (HVAC) system comprising;
- a housing defining an air passage for directing air flow through said housing,
- a valve including a film having side edges and an opening disposed between said side edges and supported by said housing to extend across said passage,
- a rack extending along said film and having teeth disposed therealong,
- a first sprocket rotatably supported by said housing for rotation about an axis and engaging said teeth for moving said rack and said film linearly, and
- said rack including a retainer for retaining said sprocket in engagement with said teeth.
A heating, ventilation and air conditioning (HVAC) system comprising;
- a housing defining an air passage for directing air flow through said housing,
- a valve including a film having edges and an opening disposed between said edges and supported by said housing to extend across said passage,
- a mechanism for moving said film linearly, and
- said film having at least one circular aperture in said film adjacent said opening therein for relieving stress.
Dependencies are inferred from the claim text.