F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
26/155, 189/20,
F01N 13/14 (2010.01) B21C 37/06 (2006.01) B60K 13/04 (2006.01)
Patent
CA 2023001
Abstract of the Disclosure an insulated exhaust pipe comprising inner and outer spaced corrugated metallic tubes separated by a layer of low density refractory fiber insulation and strips of higher density refractory fiber insulation. The pipe is made by adhering the insulation to the inner tube and inserting the insulated inner tube into the outer tube while rotating it so that the corrugations of the outer tube do not damage the insulation. Attachment means for connecting a corrugated insulated pipe to an element in the exhaust system means include a conduit having a transverse lug which allows the conduit to be threaded into the pipe. The end of the pipe is received in an end cap slidably mounted on the conduit. A stop on the conduit limits relative movement of the pipe and conduit, permitting the connection between the pipe and conduit to be tightened. A standard exhaust pipe can also be insulated by a flexible insulated tube comprising concentrically arranged inner and outer corrugated stainless steel tubes, the annulus between the corrugated tubes being filled with refractory fiber insulation. The wall thickness of the corrugated tubes is in the range of 0.002 inch and 0Ø04 inch, which provides the insulated tube with sufficient flexibility to be trained over nonlinear portions of the exhaust pip. The contact between the corrugations and the pipe assists in holding the insulated tube in place. In addition, a flexible coupling is provided for connecting an engine manifold to an exhaust pipe in order to relieve torque. concentrically spaced flexible tubes, which have insulation filling the annular space between them, are connected to inlet and outlet tubes having interior ends located between the ends of the flexible tubes. The inlet and outlet tube have enlarged upstream ends and smaller downstream ends. By overlapping the interior ends of the inlet and outlet tubes, the tubes are able to have relative angular movement when the flexible tubes bend due to engine torque. One or more separate tubes which also have enlarged and smaller upstream and downstream ends may be provided to overlap with the inlet and outlet tubes to allow bending of longer couplings. ** TOTAL PAGE .001 **
Bainbridge David W.
Macrae & Co.
Manville Corporation
LandOfFree
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