Patent ID: 8511146
Filing Date: 2013-08-20
Classification: G01M

Abstract:
1. A portable apparatus for determining leaks in air ducts, which comprises: (a) a wheeled cabinet having an interior, said cabinet having a door for accessing said cabinet interior; (b) a variable speed blower located within said cabinet interior; (c) a smoke generator located within said cabinet interior; (d) flexible hose having two ends and located within said cabinet interior, one end, one flexible hose end adapted to mate in air flow relationship with an air duct to be determined; (e) multiple venturis having two ends, being of different diameter, and located within said cabinet interior, one end of each venturi adapted to mate with a free end of said flexible hose and the other end adapted to be in air flow relationship with said variable speed blower; and (f) a readout and control panel readable by a user of said portable apparatus, when using said portable apparatus to determine leaks within air ducts, said smoke generator generating smoke that is blown by said variable speed blower through one of said venturis and into said flexible hose and then into said air duct to be determined.