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Class Information
Number: 440/46
Name: Marine propulsion > Jet drive > Having means to prevent clogging
Description: Device wherein a means is provided to inhibit the obstruction of the fluid passageway by foreign material.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7520789 |
Water intake grill for personal watercraft |
Apr. 21, 2009 |
| 7377826 |
Fouling removal system for jet drive water intake |
May. 27, 2008 |
| 7217165 |
Waterjet steering and reversing apparatus |
May. 15, 2007 |
| 6716263 |
Air suction device for use in surface boat |
Apr. 6, 2004 |
| 6645018 |
Boat propulsion device |
Nov. 11, 2003 |
| 6575109 |
Thruster screen |
Jun. 10, 2003 |
| 6482055 |
Water jet propulsion unit having linear weed grate clean-out system |
Nov. 19, 2002 |
| 6375523 |
Personal watercraft (PWC) variable inlet/intake grate |
Apr. 23, 2002 |
| 6343964 |
Jet boat with improved hull design and engine placement |
Feb. 5, 2002 |
| 6283805 |
Water jet propulsion type outboard motor |
Sep. 4, 2001 |
| 6238256 |
Arrangement for mounting propulsion unit to boat hull |
May. 29, 2001 |
| 6224435 |
Inlet structure for water jet apparatus mounted to boat hull |
May. 1, 2001 |
| 6183319 |
Closure preventive device for water jet propulsion type outboard motor |
Feb. 6, 2001 |
| 6168481 |
Jet boat with improved hull design and engine placement |
Jan. 2, 2001 |
| 6159060 |
Protective shrouding with debris diverting inflow vanes for pump-jet propulsion unit |
Dec. 12, 2000 |
| 6083063 |
Pump jet apparatus with articulating weed grate clean-out system |
Jul. 4, 2000 |
| 6033272 |
Marine jet drive system with debris cleanout feature |
Mar. 7, 2000 |
| 5989083 |
Water jet propulsion device for vessels |
Nov. 23, 1999 |
| 5876258 |
Self-activating marine jet drive weed grate cleanout system |
Mar. 2, 1999 |
| 5851130 |
Watercraft intake debris cleaner |
Dec. 22, 1998 |
| 5846105 |
Marine jet propulsion water inlet system |
Dec. 8, 1998 |
| 5839927 |
Water jet system |
Nov. 24, 1998 |
| 5779508 |
Anticlogging water jet craft |
Jul. 14, 1998 |
| 5769674 |
Jet drive for outboard motor |
Jun. 23, 1998 |
| 5700169 |
Inlet adapter for a personal watercraft |
Dec. 23, 1997 |
| 5690520 |
Weed removal apparatus for a jet pump propelled watercraft |
Nov. 25, 1997 |
| 5658176 |
Marine jet propulsion system |
Aug. 19, 1997 |
| 5598804 |
Device for clearing water intake grilles of water jet watercraft |
Feb. 4, 1997 |
| 5577941 |
Marine jet drive weed grate |
Nov. 26, 1996 |
| RE35351 |
Ride plate for personal watercraft |
Oct. 15, 1996 |
| 5540605 |
Water inlet foil grating of motorboat |
Jul. 30, 1996 |
| 5522742 |
Clean-out arrangement for jet propelled watercraft |
Jun. 4, 1996 |
| 5509832 |
Marine jet drive |
Apr. 23, 1996 |
| 5507673 |
Jet propelled watercraft |
Apr. 16, 1996 |
| 5505639 |
Hydro-air drive |
Apr. 9, 1996 |
| 5468165 |
Grass and debris exclusion plate for marine jet pumps |
Nov. 21, 1995 |
| 5324216 |
Jet pump system for a water jet propelled boat |
Jun. 28, 1994 |
| 5289793 |
Heliconic thruster system for a marine vessel |
Mar. 1, 1994 |
| 5224887 |
Screen for watercraft jet propulsion unit |
Jul. 6, 1993 |
| 5184966 |
Adjustable jet propulsion unit for watercraft |
Feb. 9, 1993 |
| 5176547 |
Water jet propulsion unit |
Jan. 5, 1993 |
| 5176548 |
Ride plate for personal watercraft |
Jan. 5, 1993 |
| 5114368 |
Shaft shielding top loader |
May. 19, 1992 |
| 4971584 |
Water jet propelling vessel |
Nov. 20, 1990 |
| 4934300 |
Vehicle propulsion apparatus and method of operation |
Jun. 19, 1990 |
| 4850909 |
Outboard jet foot protector |
Jul. 25, 1989 |
| 4549868 |
Jet propulsion system for boats |
Oct. 29, 1985 |
| 4437841 |
Outboard jet drive steering mechanism |
Mar. 20, 1984 |
| 4402674 |
Air aspiration prevention pan |
Sep. 6, 1983 |
| 4373919 |
Multi-passage variable diffuser inlet |
Feb. 15, 1983 |
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