A heat exchanger member contoured to fit along one side of an exhaust pipe is retained in place on the exhaust pipe by clamps. In one form of the invention the exhaust pipe forms a part of the heat exchanger reservoir in which case leak preventive adhesive secures the heat exchanger member to the pipe....http://www.google.es/patents/US4832262?utm_source=gb-gplus-sharePatente US4832262 - Automobile window washing apparatus and heat exchanger therefor
Automobile window washing apparatus and heat exchanger therefor
