Patent ID: 6162119
Filing Date: 2000-12-19
Classification: B60H

Abstract:
Apparatus in a vehicle housing for controlling distribution of a supply of intake air in said vehicle to separate first, second and third regions of said vehicle, each of said regions includinga duct communicating said supply of intake air to said region, a damper mounted in said duct and movable between open and closed positions, and an arm having a first part coupled to said damper for moving it between said open and closed positions and a second part spaced from said first part, said ducts for said first, second and third regions comprising a first set of ducts,said apparatus comprising a housing, first and second cams, each rotatably mounted in said housing about a central spindle, means for rotating each of said cams,said first cam having three separate cam surfaces which vary in height relative to its central spindle,each of said arms having at its second part a cam follower coupled to one of said three cam surfaces,said cam surfaces of said first cam configured to open or close the damper for any one or more of said regions,said second cam configured substantially the same as said first cam and operable to drive said arms coupled to said dampers for said three regions the same as and independently of said first cam, such thatsaid second cam can cause opening or closing of the same or different dampers or combination of said dampers as said first cam.