U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5377411

Hair Cutting Appliance

A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 440/89E - Preventing reverse flow of exhaust


Subclass of Class 440 - Marine propulsion
No. of patents: 15
Last issue date: 05/15/2012


NumberTitleIssue Date
8177593Outboard motor
An outboard motor includes an engine, an exhaust passage, an idle exhaust passage, a contraction portion and an expansion chamber, a bypass passage, and a check valve. The bypass passage includes an upstream end connected to the idle exhaust passage at a downstream ...
05/15/2012
7427222Reversion control device for watercraft exhaust system
The present invention is a reversion control device including a housing for a stationary vane and a flapper. In one example, the housing includes an expansion chamber to house the stationary vane and the flapper. ...
09/23/2008
7390232Exhaust system for a marine engine
An exhaust system for a marine propulsion system includes first through fifth exhaust conduit members, including a pair of serially connected marine exhaust elbows laterally spanning the engine. ...
06/24/2008
7387555Apparatus and method for boat engine exhaust injection system
An apparatus and method for injecting a boat engine's exhaust gasses into the boat propeller's propwash, aft of the propeller. The apparatus comprises piping which injects the boat engine's exhaust gasses into the propwash of the boat, aft of the propeller. This res...
06/17/2008
7182659Exhaust device of boat
An open/close valve can decrease the exhaust resistance as much as possible in a usual operation. An open/close valve includes a valve casing and a valve element that is housed in the valve casing in a vertically movable manner. The valve casing includes a cylindric...
02/27/2007
7065961Exhaust system with an integral moisture trap
A moisture trap is formed as an integral part of the wall of an exhaust conduit. Tapered surfaces can be provided to direct condensate downwardly and into a reservoir of the moisture trap where the moisture is retained until the temperature of the exhaust system rea...
06/27/2006
7029347Water preclusion device for marine engine
A water preclusion device for a watercraft with an internal combustion engine for inhibiting the intrusion of water upstream into an exhaust system. The water preclusion device includes a valve controlled by exhaust gas pressure. ...
04/18/2006
6921307Exhaust system for outboard motor
An outboard motor includes a housing unit mounted on an associated watercraft. An engine is disposed above the housing unit. The engine defines a first exhaust passage communicating with a combustion chamber of the engine. The housing unit defines a second exhaust p...
07/26/2005
6802750Exhaust system for watercraft
The invention relates to an exhaust system for watercraft, having an exhaust pipe which leads from an engine system to an exhaust gas outlet, wherein a through-flow means for degrading the energy of seawater gushing through the exhaust gas outlet into said exhaust p...
10/12/2004
6773317Method and system for preventing fluid from flowing along a fluid path in a watercraft
An apparatus and method are provided for selectively preventing fluid from flowing through a fluid path when a vehicle is in a predetermined orientation. When an orientation sensor signals to a controller that the vehicle is inverted, the controller closes a valve t...
08/10/2004
6739922Personal watercraft
Disclosed is a personal watercraft capable of preventing an exhaust gas from contaminating a transom board in the vicinity of an exhaust outlet and of reducing an exhaust noise of the exhaust gas within a wide speed range. The personal watercraft having an engine di...
05/25/2004
6638124Arrangement in a marine exhaust system
Method and arrangement for a marine combustion engine exhaust system. The arrangement includes at least two substantially upstanding exhaust pipe arms that are coupled together in common closed fluid communication with a stem exhaust pipe. A pressure equa...
10/28/2003
5881555Exhaust pressure pulsation control apparatus for marine propulsion system
An improved exhaust pressure pulsation control apparatus for a marine propulsion system has a front ring, a reflector disk located downstream of the front ring, and a plurality of connecting members connecting the front ring to the reflector disk. Each co...
03/16/1999
4845945Exhaust elbow trough
A water jacketed exhaust elbow (10) for a marine propulsion system includes an intake exhaust passage (22) communicating with a discharge exhaust passage (26), a water jacket (27) around the exhaust passages, and a trough member (200) extending longitudin...
07/11/1989
4023353Multi-flow marine jet-propulsion apparatus
An outboard marine propulsion apparatus has a rotor unit axially displaceable between forward and reverse operating positions. In the forward position, concentric horizontal paths through the apparatus are provided for rearward discharge of the propulsive...
05/17/1977
 
Sign InRegister
Username  
Password   
forgot password?