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Class Information
Number: 441/28
Name: Buoys, rafts, and aquatic devices > Buoy > Having means to control attitude or position > Having ballast means
Description: Buoy wherein the means to control the vertical, horizontal, or rotational movement includes a heavy material intended to alter the draft or stability of the buoy.










Sub-classes under this class:

Class Number Class Name Patents
441/29 Variable ballast 55


Patents under this class:

Patent Number Title Of Patent Date Issued
8647014 Buoy systems and methods for minimizing beach erosion and other applications for attenuating water surface activity Feb. 11, 2014
8408956 Payload delivery units for pressure protecting and delivering a submerged payload and methods for using the same Apr. 2, 2013
8099804 Thermally insulating blanket constructed of individual floats and system for deploying and retrieving same Jan. 24, 2012
7699018 Method and apparatus for repelling geese Apr. 20, 2010
7699676 Buoy system Apr. 20, 2010
7156712 Floating debris and weedline marker Jan. 2, 2007
7083484 Inflatable dive marker and collection bag Aug. 1, 2006
6860773 Inflatable dive marker and collection bag Mar. 1, 2005
6652339 Inflatable dive marker and collection bag Nov. 25, 2003
6463800 Energy conserving moored buoyant ocean profiler Oct. 15, 2002
6273773 Scuba diver's marker buoy and dry box Aug. 14, 2001
6183326 Communication buoy with ice penetrating capabilities Feb. 6, 2001
6092483 Spar with improved VIV performance Jul. 25, 2000
6086439 Adjustable depth marker buoy Jul. 11, 2000
6021731 Ballast system for underwater vehicle Feb. 8, 2000
5769677 Marker buoy Jun. 23, 1998
5735719 Combination inflatable dive flag and float Apr. 7, 1998
5727974 Liquid-filled underwater sculptural object Mar. 17, 1998
5528851 Fishing line bobber Jun. 25, 1996
5516316 Diver awareness buoy May. 14, 1996
5461816 Decoy anchor Oct. 31, 1995
5449307 Sea surveillance and control apparatus Sep. 12, 1995
5379267 Buoyancy control system Jan. 3, 1995
5348501 Compact retrievable marker buoy Sep. 20, 1994
5234365 Marker buoy apparatus Aug. 10, 1993
5188551 Marker body Feb. 23, 1993
H1051 Antenna stabilizing buoy May. 5, 1992
5098323 Device for positioning of a buoy body Mar. 24, 1992
5066256 Buoy and releasing system for ships in distress Nov. 19, 1991
4981453 Emergency transmitter buoy and bracket assembly Jan. 1, 1991
4927394 Unitary buoy May. 22, 1990
4639227 Buoy Jan. 27, 1987
4579536 Floating search and rescue inflatable pyramid Apr. 1, 1986
4573933 Floating search and rescue inflatable pyramid Mar. 4, 1986
4557697 Method of delivering to ocean bottom and raising to surface of station for deep water researches and design of station delivered using said method Dec. 10, 1985
4544364 Illuminated buoy marker Oct. 1, 1985
4501563 Marker buoy Feb. 26, 1985
4498879 Emergency rescue device Feb. 12, 1985
4487151 Floating highway Dec. 11, 1984
4464131 Water ballast compartment for buoyant marine devices Aug. 7, 1984
4443203 Floating marker Apr. 17, 1984
4300254 Release mechanism for underwater device, such as seismograph Nov. 17, 1981
4138752 Marine buoy Feb. 13, 1979
4114137 Directional sonobuoy Sep. 12, 1978
3978805 Stabilized floating platforms Sep. 7, 1976
3974789 Floating structures including honeycomb cores formed of elongate hexagonal cells Aug. 17, 1976
3942203 Segmented buoy Mar. 9, 1976
3939510 Lighted plastic discrepancy buoy Feb. 24, 1976











 
 
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