| |
 |
|
Class Information
Number: 114/141
Name: Ships > Keels > Vertical adjustment
Description: Keel structures which are adapted to be moved vertically as a whole and which extend from bow to stern and not merely centerboards.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6382121 |
Boat ballast system |
May. 7, 2002 |
| 6325009 |
Sailboat for sailing in shallow water |
Dec. 4, 2001 |
| 6176191 |
Bilge keel and method for FPSO petroleum production systems |
Jan. 23, 2001 |
| 6032603 |
Method and apparatus to increase the velocity of sailing vessels |
Mar. 7, 2000 |
| 5784976 |
Weighted daggerboard stabilizer for wind surfing apparatus |
Jul. 28, 1998 |
| 5617805 |
Trimaran |
Apr. 8, 1997 |
| 5503581 |
Apparatus for adjustable fin and fin block |
Apr. 2, 1996 |
| 5431121 |
Sailboat keel hoist assembly |
Jul. 11, 1995 |
| 5280760 |
Sailing craft |
Jan. 25, 1994 |
| 5235926 |
Anti-skid device for flat-bottomed boats |
Aug. 17, 1993 |
| 5036783 |
Sailing yacht with a centerboard |
Aug. 6, 1991 |
| 4759308 |
Sealing lip assembly for surfboards and sailboats |
Jul. 26, 1988 |
| 4721051 |
Tandem winch reels |
Jan. 26, 1988 |
| 4703708 |
Steerable keel |
Nov. 3, 1987 |
| 4690089 |
Boat with a raisable and lowerable keel |
Sep. 1, 1987 |
| 4563971 |
Retractable boat keel |
Jan. 14, 1986 |
| 4439166 |
Adjustable water ski fin and wing |
Mar. 27, 1984 |
| 4378748 |
Sailboat keel apparatus |
Apr. 5, 1983 |
| 4376416 |
Convertible sailboat/motorboat |
Mar. 15, 1983 |
| 4316425 |
Lifting keel for sporting sail boats |
Feb. 23, 1982 |
| 4297757 |
Marine rescue capsule |
Nov. 3, 1981 |
| 3951090 |
Hydraulic system for raising and lowering keel |
Apr. 20, 1976 |
|
|
|
