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Class Information
Number: 280/479.3
Name: Land vehicles > Wheeled > Articulated vehicle > Connection facilitating > Draft element bodily shiftable > Extensible swingable tow bar with coacting guide for centering
Description: Vehicles where either the tow bar or trailer tongue is extensible out if its guide to facilitate coupling with another vehicle after which, during its retraction, wedges, cams or other surfaces react against a guide to center the bar in its normal position.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7552938 |
Quick release telescoping and swiveling hitch assembly |
Jun. 30, 2009 |
| 7425014 |
Trailer hitch |
Sep. 16, 2008 |
| 7425013 |
Continuously adjustable hitch assembly |
Sep. 16, 2008 |
| 7290755 |
Trailer hitch method and apparatus |
Nov. 6, 2007 |
| 7059615 |
Locking mechanism and method for a mower-sulky unit |
Jun. 13, 2006 |
| 7052032 |
Pivotable anti sway trailer hitch |
May. 30, 2006 |
| 6494477 |
Automatic trailer hitch coupling apparatus |
Dec. 17, 2002 |
| 6428030 |
Self-centering trailer hitch |
Aug. 6, 2002 |
| 6357779 |
Hitch assemblies for connecting a trailer to a tow vehicle |
Mar. 19, 2002 |
| 6328326 |
Self-aligning hitch |
Dec. 11, 2001 |
| 6286852 |
Self-aligning hitch |
Sep. 11, 2001 |
| 6170852 |
Trailer hitch assembly |
Jan. 9, 2001 |
| 5975552 |
Self-aligning trailer hitch |
Nov. 2, 1999 |
| 5845921 |
Three-dimensionally adjustable trailer hitch |
Dec. 8, 1998 |
| 5630606 |
Trailer hitch with extensible throat |
May. 20, 1997 |
| 5580088 |
Manually operated trailer hitch with extendable swinging boom |
Dec. 3, 1996 |
| 5547210 |
Trailer hitch |
Aug. 20, 1996 |
| 5342076 |
Gooseneck trailer hitch |
Aug. 30, 1994 |
| 5288095 |
Trailer hitch |
Feb. 22, 1994 |
| 5288096 |
Self aligning hitch |
Feb. 22, 1994 |
| 5277446 |
Trailer hitch coupling device |
Jan. 11, 1994 |
| 5277447 |
Trailer hitch with alignment adapter |
Jan. 11, 1994 |
| 5263734 |
Coupling device for attaching towable implements to a tractor |
Nov. 23, 1993 |
| 5188385 |
Automatic locking proximity trailer hitch |
Feb. 23, 1993 |
| 5048854 |
Pivoting quick-connect hitch system |
Sep. 17, 1991 |
| 5011176 |
Adjustable trailer coupling |
Apr. 30, 1991 |
| 5009446 |
Self aligning coupling apparatus |
Apr. 23, 1991 |
| 4991865 |
Automatic self-aligning trailer hitch |
Feb. 12, 1991 |
| 4951957 |
Trailer hitch |
Aug. 28, 1990 |
| 4944525 |
Self locking trailer hitch |
Jul. 31, 1990 |
| 4893829 |
Self aligning coupling apparatus |
Jan. 16, 1990 |
| 4811967 |
Trailer hitch |
Mar. 14, 1989 |
| 4802686 |
Trailer hitch |
Feb. 7, 1989 |
| 4792153 |
Trailer hitch |
Dec. 20, 1988 |
| 4773667 |
Proximity hitch |
Sep. 27, 1988 |
| 4759564 |
Adjustable leveling device for automatic trailer hitch |
Jul. 26, 1988 |
| 4744583 |
Motorized wide range tow hitch |
May. 17, 1988 |
| 4677814 |
Quick attach apparatus for crop harvest header and the like |
Jul. 7, 1987 |
| 4666177 |
Hitch |
May. 19, 1987 |
| 4589672 |
Improvement in or relating to trailers |
May. 20, 1986 |
| 4568099 |
Vehicle-to-vehicle connection mechanism |
Feb. 4, 1986 |
| 4558883 |
Hitch assembly |
Dec. 17, 1985 |
| 4515387 |
Hitch with swiveling tongue |
May. 7, 1985 |
| 4482166 |
Hitching guide |
Nov. 13, 1984 |
| 4466632 |
Trailer hitch having a winch coupling assist |
Aug. 21, 1984 |
| 4440417 |
Hitch assembly |
Apr. 3, 1984 |
| 4350362 |
Self-centering trailer hitch |
Sep. 21, 1982 |
| 4341268 |
Plough for working earth between plant row |
Jul. 27, 1982 |
| 4254969 |
Slide lock trailer hitch |
Mar. 10, 1981 |
| 4215875 |
Trailer hitch |
Aug. 5, 1980 |
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