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Class Information
Number: 114/197
Name: Ships > Valves > Boat plugs
Description: Plugs having valves therein adapted to fit in the bottom of a boat and permit the emergence of water.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7316195 |
Drain plug retention system |
Jan. 8, 2008 |
| 7191722 |
Boat drain plug absence detector |
Mar. 20, 2007 |
| 7191723 |
Transom plug removal device and method |
Mar. 20, 2007 |
| 7152546 |
Boat drain plug system |
Dec. 26, 2006 |
| 7140316 |
Boat drain valve |
Nov. 28, 2006 |
| 7121526 |
Drain plug assembly |
Oct. 17, 2006 |
| 6973891 |
Dual seal self-closing boat drain plug apparatus |
Dec. 13, 2005 |
| 6928943 |
Boat plug key system |
Aug. 16, 2005 |
| 6761122 |
Stand-up type personal watercraft |
Jul. 13, 2004 |
| 6736081 |
Bilge management and control system of a vessel |
May. 18, 2004 |
| 6634312 |
One-way self-closing drain plug apparatus |
Oct. 21, 2003 |
| 6615760 |
Boat drain plug |
Sep. 9, 2003 |
| 6604481 |
Method and apparatus for permitting passage of conduits through hull of boat |
Aug. 12, 2003 |
| 6477971 |
Bilge drainage system |
Nov. 12, 2002 |
| 6357376 |
Boat drain assembly |
Mar. 19, 2002 |
| 6338309 |
Inboard motorboat bilge drainage system |
Jan. 15, 2002 |
| 6237639 |
Dump-valve device for a craft and pneumatic craft fitted with same |
May. 29, 2001 |
| 6227132 |
Boat drain plug with cable tether |
May. 8, 2001 |
| 6050867 |
Drain system for marine vessel |
Apr. 18, 2000 |
| 5966080 |
Drain plug warning system |
Oct. 12, 1999 |
| 5727820 |
Side-mounted "L" shaped flange |
Mar. 17, 1998 |
| 5724908 |
Remote controlled boat drain valve |
Mar. 10, 1998 |
| 5722339 |
Drip control fitting |
Mar. 3, 1998 |
| 5522338 |
Rib, rigid-hull inflatable boat |
Jun. 4, 1996 |
| 5460111 |
Boat transom drain hole plug |
Oct. 24, 1995 |
| 5385108 |
Automatic transom scupper valve |
Jan. 31, 1995 |
| 5182556 |
Drain plug absence indicator |
Jan. 26, 1993 |
| 5176097 |
Self bailing boat |
Jan. 5, 1993 |
| 5162793 |
Drain plug absence indicator |
Nov. 10, 1992 |
| 5048556 |
Transom-mounted valve with remote actuator |
Sep. 17, 1991 |
| 5047753 |
Drain plug position indicator apparatus |
Sep. 10, 1991 |
| 5018470 |
Linear actuated valve with remote actuation |
May. 28, 1991 |
| 4986777 |
Marine engine oil drainage device |
Jan. 22, 1991 |
| 4930657 |
Floatable drain plug |
Jun. 5, 1990 |
| 4875884 |
Marine propulsion device with thru-transom engine oil drain system |
Oct. 24, 1989 |
| 4843376 |
Boat drain plug warning apparatus |
Jun. 27, 1989 |
| 4744326 |
Self-bailing inflatable boat |
May. 17, 1988 |
| 4693690 |
Quick drain assembly for boat engine |
Sep. 15, 1987 |
| 4678441 |
System for discharging water from crank chamber |
Jul. 7, 1987 |
| 4630648 |
Deck drain by-pass plug |
Dec. 23, 1986 |
| 4552537 |
Marine propulsion device with engine heat recovery system and streamlining hull closures |
Nov. 12, 1985 |
| 4542373 |
Small craft plug detector |
Sep. 17, 1985 |
| 4534307 |
Adapter for installation of marine instruments |
Aug. 13, 1985 |
| 4533331 |
Vent and drain assembly for marine propulsion device |
Aug. 6, 1985 |
| 4516515 |
Boat plug reminder and method for use thereof |
May. 14, 1985 |
| 4340006 |
Semi-automatic bailer plug |
Jul. 20, 1982 |
| 4217846 |
Boat bailing apparatus |
Aug. 19, 1980 |
| 4216558 |
Water inlet adapter valve for boats |
Aug. 12, 1980 |
| 4198918 |
Semi-automatic bailer plug |
Apr. 22, 1980 |
| 4019454 |
Boat plug apparatus |
Apr. 26, 1977 |
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