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6564901 |
Muffler for marine engine
A marine engine muffler is provided having a silencing element with an inclined surface defining an array of elongate slotted apertures generally disposed in circumferential alignment. The slotted...
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6412595 |
Economical exhaust muffler system for a marine propulsion apparatus
A muffler is provided for a marine propulsion system in which an initial portion causes a downward flow of exhaust gas and entrained water from an exhaust manifold. The transition section directs...
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5969300 |
Wet marine exhaust muffler
A wet marine exhaust muffler includes a metallic housing and a polymeric jacket substantially encapsulating the metallic housing. The metallic housing defines one or more chambers in the interior...
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5824970 |
Marine engine silencer having internal apertured baffle and weir plate
A silencer is provided for a marine diesel engine. The silencer comprises a conical silencer element (20) located within an exhaust duct (10), the silencer element having apertured surfaces which...
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5719358 |
Arrangement for muffling the exhaust sound of a boat motor
A muffler for muffling the exhaust sound of a motor boat having a diesel motor. The exhaust gases of the motor are led to a buffer chamber that is located beneath the waterline of the boat and...
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5625173 |
Single baffle linear muffler for marine engines
An improved muffler for silencing the exhaust emitted from a water cooled marine engine employing a first outer housing encompassing a generally cone shaped inner member and forming a silencing...
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5616893 |
Reverse entry muffler with surge suppression feature
An improved muffler for silencing the exhaust emitted from a marine engine employing a reverse entry inlet conduit, an attenuation chamber and an outlet conduit whereby exhaust gas and liquid is...
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5594217 |
Exhaust muffler for small marine craft
An exhaust muffler for small marine craft that can be located in the rear portion of the bilge and straddle the drive shaft and the shaft log. The muffler has a shell formed from sides, ends, top...
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5588888 |
Wet marine exhaust muffler
A wet marine exhaust muffler comprises a housing, an inlet pipe and an outlet pipe. The housing includes end walls each transverse with respect to an imaginary plane and converging side walls...
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5561276 |
Two-phase-flow muffler in a rotating shaft
A muffler is described for use in connection with an exhaust passage in a ongated shaft rotating about a longitudinal axis. The shaft exhausts exhaust material generated by an internal or external...
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5550337 |
Exhaust system for a small planing craft
An exhaust silencing system for a small planing craft includes a first expansion chamber housing on one side of a water craft which transmits exhaust gases and waste cooling water to a second...
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5504280 |
Muffler for marine engines
An improved muffler for silencing the exhaust emitted from a water cooled marine engine comprising a housing enclosure having a corrugated spacing means disposed within the housing partitioned by...
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5444196 |
In line insertion muffler for marine engines
An improved muffler for silencing the exhaust emitted from a water cooled marine engine employing a first housing encompassing a second housing which is partitioned by an angularly disposed inner...
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5442148 |
Exhaust muffler for outboard motors
An exhaust muffler for outboard motors which is fastened to the rear end of the propeller hub and directs the motor's exhaust back into the hub of the propeller and out through the front of the...
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5374209 |
Internal combustion engine exhaust system
An outboard motor comprising a propulsion unit including a propeller shaft, and an internal combustion engine drivingly connected to the propeller shaft and including a V-shaped cylinder block...
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5329074 |
Marine engine exhaust muffler
An exhaust muffler for mounting on the transom of a powerboat in association with the exhaust pipes which extend through the transom. The muffler comprises a housing extending laterally across the...
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5326942 |
Noise suppression muffler for moisture laden exhaust gases & method
A muffler is provided for sound dampening of wet exhaust gases. The muffler comprises a canister, or housing, having an inlet and an outlet. The housing is preferably constructed of a plurality of...
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5306184 |
Outboard engine exhaust system
A muffler for an exhaust system of an outboard engine is constructed in two parts, one being longer than the other with the longer portion being of standard length for various engine applications,...
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5253603 |
Underwater vehicle muffler
A muffler for use with an underwater vehicle. The muffler is mechanically attached to an exhaust tube or aft end of the underwater vehicle and has an hydrodynamic shape and perforated exterior that...
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5106330 |
Exhaust relief system with baffle
The invention provides a marine propulsion device comprising a powerhead including an exhaust gas discharge port, a gearcase rotatably supporting a propeller shaft connected to the powerhead and...
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5103931 |
Exhaust silencing means for marine propulsion
A number of embodiments of internal combustion engine exhaust systems each of which is effective to provide good silencing for exhaust gases through the use of an elastic diaphragm that dampens...
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5094640 |
Marine engine noise suppressor with swim platform
Sound muffling devices for marine engines for installation on the external portion of the transom of a marine vessel are attached in such a manner that any breakdown within the silencer causes no...
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4977977 |
Marine engine external exhaust noise suppressor with swim platform
Sound muffling devices for marine engines for installation on the external portion of the transom of a marine vessel are attached in such a manner that any breakdown within the silencer causes no...
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4887692 |
Noise reducing device for marine propulsion
A number of embodiments of silencing devices for marine propulsion units using acoustical lenses that are positioned across either the air inlet device, the air exhaust device or both. The...
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4799905 |
Water jacketed exhaust relief system for marine propulsion devices
Disclosed herein is an inner exhaust gas housing adapted to be located within a drive shaft housing of an outboard motor, which inner exhaust gas housing integrally includes an open upper end, a...
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4786265 |
Marine engine exhaust muffler
An exhaust muffler for mounting on the transom of an inboard or inboard/outboard motorboat around the exhaust pipes which extend from the transom. The muffler comprises a housing which has a pair...
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4779704 |
Draining device for muffler of small planing boat
A draining device for a muffler of a small planing boat in which engine cooling water is injected into the muffler. A draining hole is opened in the muffler, and to aforesaid draining hole is...
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4744778 |
Marine engine exhaust muffler with swim platform
An exhaust muffler for mounting on the transom of an inboard or inboard/outboard motor boat over the exhaust pipes which extend through the transom includes a top which forms a swim platform. The...
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4714443 |
Flexible exhaust duct
A novel exhaust system for both conducting engine exhaust gases away from and aft of the personnel occupied portion of a marine vessel and protecting the sides of the hull of the vessel from...
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4527657 |
Tapered tube impedance matching underwater voice communicator with bubble silencer
An underwater voice communicator in which the preferred embodiment comprises a pair of tapered tubes in communication with a diver's mouth. The tubes are constructed of a material having a sound...
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4527658 |
Bubble silencer for an underwater voice communicator
A bubble silencer for use with scuba equipment is comprised of a flat flexible enclosure attached to a scuba regulator valve. Exhaust bubbles issuing from the regulator into the enclosure coalesce...
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4310067 |
Optimized diesel engine exhaust silencer
An exhaust silencer system for piston type internal combustion engines hag a wet-exhaust, having a muffler and a muffler bypass which contains water at slow and moderate engine speeds, the water...
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4284169 |
Bubble noise reduction
A method and apparatus for reducing acoustic noise associated with the release of gases from a submerged device, such as a sea water battery. A flat piece of material, preferably polyurethane, is...
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4167987 |
Multiple flow marine muffler constructed of resilient material
A multiple flow marine muffler constructed of resilient material having an elongated generally cylindrical hollow shell with reduced diameter inlet and outlet portions, and longitudinally spaced...
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4002136 |
Marine exhaust system
A marine exhaust system for boats powered by an internal combustion engine is disclosed. An exhaust chamber is located in the stern of the boat and is connected to the engine exhaust manifold. A...
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3923122 |
Seismic pneumatic energy source with attenuation of bubble pulse amplitude and reduction of period of bubble oscillation
A method for decreasing the amplitude and period of bubble pulses following a primary seismic energy pulse comprises deflecting all of the expanding gases into the same direction to form the bubble...
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3908578 |
Exhaust systems for aquatic craft
A self-propelled aquatic craft adapted for towing an individual through water comprised of an internal combustion engine drive connected to a propeller with a generally cylindrical guard member...
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3901352 |
Underwater reflector of sound waves
An underwater reflector of sound waves adapted for use at great depths and comprising a hermetic enclosure constituted of a flexible material capable of undergoing deformation, a stack of mesh...
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3576172 |
DIRECTIONAL FLOW EXHAUST REGULATOR WITH FLUID CONTROL
An exhaust system for an internal combustion engine in a boat having a first conduit through which gases are exhausted into the atmosphere, said first conduit communicating with a second conduit...
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3568672 |
BUBBLE DISPERSION DEVICE FOR UNDERWATER BREATHING APPARATUS
An exhalation dispersing apparatus for use in a water medium comprising a bag adapted to fit and be secured to one end of a container pack which houses cylinders of breathing gas and accessory...
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3474782 |
MEANS FOR DISPERSING GASES EXHALED FROM UNDERWATER BREATHING APPARATUS
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3431882 |
MARINE PROPULSION DEVICE
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3415245 |
Noise-suppression diving apparatus
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3374855 |
Muffler and diffuser for underwater diving
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3296997 |
Exhaust and muffling system for marine engines
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3291252 |
Underwater exhaust muffler
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3282373 |
Outboard motor trolling muffler
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3084651 |
Silencer for ships
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3045423 |
Muffled exhaust release for an outboard motor
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2954750 |
Mixer nozzle
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