Abstract: A silencing system for a marine exhaust system incorporates a single muffler for each engine of the marine vessel. The muffler is provided with two sound dampening chambers interconnected by several exhaust openings between the chambers. A Y-shaped exhaust type system directs exhaust streams from both sides of an engine toward a single exhaust conduit which extends through a transom of the marine vessel. The muffler is provided with a drain opening that allows water to flow out of the first chamber of the muffler in order to maximize the available volume within that chamber for use in sound attenuation. The outlet of the second chamber is provided with a baffle plate that directs the flow of exhaust gas in a forward direction toward the transom of the marine vessel and a deflection surface that directs the exhaust gas to flow in a downward direction toward the surface of the body of water in which the marine vessel is operated.

Abstract: In a multiple disc wet brake or clutch of the type having a disc pack wherein the plurality of alternate discs, that have projections extending radially inward for operative interconnection with a rotatable hub, are provided with a plurality of equiangularly spaced circumferential locating tangs extending radially outward from the peripheral outer surface of these discs, for locating these discs relative to the housing inner peripheral surface so as to permit the removal of the rotatable hub without causing substantial misalignment between the radially inward extending disc projections and the corresponding external splines on the rotatable hub to allow subsequent reinsertion of the rotatable hub into the disc pack.