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Class Information
Number: 441/7
Name: Buoys, rafts, and aquatic devices > Buoy > Marker buoy > Having means to release buoy upon submergence
Description: Buoy secured to a body or vessel by means which upon the sinking of the body or vessel is released to permit the buoy to surface and mark its location.

Sub-classes under this class:

Class Number Class Name Patents
441/9 Gas assisted 9
441/10 Responsive to hydrostatic pressure 26
441/8 Water soluble or water weakened member 16

Patents under this class:

Patent Number Title Of Patent Date Issued
8105124 Devices and methods for recovering articles inadvertently submerged in a body of water Jan. 31, 2012
7398917 Payment V.I.P. card Jul. 15, 2008
7232354 Inflatable buoyancy device with water-dependant triggering mechanism Jun. 19, 2007
7232353 Retrievable pneumatic buoy system for submarine use Jun. 19, 2007
7179145 Deployable and autonomous mooring system Feb. 20, 2007
6786784 Child's safety swimwear Sep. 7, 2004
6554667 Device for achieving hand control of a control pedal for an electric trolling motor Apr. 29, 2003
6537118 Subsea buoy Mar. 25, 2003
6527605 Child locator buoy Mar. 4, 2003
6332819 Object retrieval device used in water Dec. 25, 2001
5951346 Air-delivered position marking device and method Sep. 14, 1999
5593332 Ice penetrating communication buoy Jan. 14, 1997
5462000 Non-turbulent pull down eye for buoyant test vehicle Oct. 31, 1995
5348502 Mounts for buoys Sep. 20, 1994
5199374 Aerial location self-actuating emergency sea surface marker for capsized vessels Apr. 6, 1993
5163858 Rescue buoy apparatus Nov. 17, 1992
5073136 Collapsible sonobuoy floatation device Dec. 17, 1991
5066256 Buoy and releasing system for ships in distress Nov. 19, 1991
4834684 Ball lock release mechanism May. 30, 1989
4784626 Sunken vessel locator buoy Nov. 15, 1988
4717092 Torpedo recovery device Jan. 5, 1988
4690091 Securing arrangement so executed as to be tripped on actuation Sep. 1, 1987
4668200 Life buoy with a radar responder May. 26, 1987
4493664 Sonobuoy float inflation and depth selection initiators Jan. 15, 1985
4433638 Automatic flotation release system Feb. 28, 1984
4211502 Breakaway pin release Jul. 8, 1980
4004310 Marker buoy recovery aid Jan. 25, 1977
4000533 Anchoring device for buoyant life saving equipment Jan. 4, 1977
3981036 Life saving buoy for small vessels Sep. 21, 1976
3934288 Object release device Jan. 27, 1976

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