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Class Information
Number: 172/677
Name: Earth working > With draft detail
Description: Apparatus comprising some detail of the means for hitching an implement to a separate propelling means, or to another implement, the hitch being of the type premitting some freedom of movement between the propelling means and the apparatus while the apparatus is being moved over the earth to perform its earthworking function.










Sub-classes under this class:

Class Number Class Name Patents
172/679 Adjustable 37
172/678 Spring biased hitch 20


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7980338 Agricultural implement having apparatus for stowing PTO driveline shaft when the PTO driveline shaft is not in use Jul. 19, 2011
7975776 Adjustable towing hitch Jul. 12, 2011
7766094 Hitch attachment for mounting of an accessory of an ATV Aug. 3, 2010
7540333 Row unit down pressure assembly Jun. 2, 2009
7513316 Implement rear hitch height and attitude control Apr. 7, 2009
7478823 Drawbar clevis assembly Jan. 20, 2009
7404448 Coupler with self-latching and self-locking latching mechanism for a quick hitch Jul. 29, 2008
7367406 Innovative hitch system with hydraulic pump May. 6, 2008
7353885 Apparatus for coupling an implement to a working vehicle Apr. 8, 2008
7334645 Articulated power transfer apparatus Feb. 26, 2008
7125033 Towing apparatuses Oct. 24, 2006
7104340 Towed implement draft force sensor Sep. 12, 2006
7100704 Implement mounting trailer Sep. 5, 2006
7059419 Tractor hitch lift arm adaptor Jun. 13, 2006
6988560 Quick attachment system Jan. 24, 2006
6973976 Self-aligning and self-locking hitch assembly Dec. 13, 2005
6966388 Offset hitch Nov. 22, 2005
6840333 Multi-function implement for attachment to a tractor and the like Jan. 11, 2005
6796384 Implement mounting fixture Sep. 28, 2004
6789746 Connecting device connecting a spray boom to a chassis of an agricultural sprayer and sprayer equipped with such a connecting device Sep. 14, 2004
6739402 Transport drawbar May. 25, 2004
6625964 Hydraulic drive line and hitching assembly for pull-type implements Sep. 30, 2003
6612380 Tractor attachment for three point hitch Sep. 2, 2003
6588513 Articulating hitch assembly Jul. 8, 2003
6585057 Hydraulic twin hitch Jul. 1, 2003
6557275 Vehicle hitch mount assembly for a snow plow May. 6, 2003
6485036 Sulky for outdoor power equipment unit Nov. 26, 2002
6454019 Agricultural implement down pressure system Sep. 24, 2002
6453582 Hitch mounted snowplow and method of using same Sep. 24, 2002
6443079 Agricultural machinery Sep. 3, 2002
6430908 Self-leveling hitch and clevis assembly Aug. 13, 2002
6363629 Vehicle hitch mount assembly for a snow plow Apr. 2, 2002
6336281 Hitch mounted snowplow and method of using same Jan. 8, 2002
6293352 Telescoping hitch for planting implement Sep. 25, 2001
6186244 Adjustable cultivator hitch for towing an air cart Feb. 13, 2001
6151809 Rear mounted snowplow Nov. 28, 2000
6138770 Lawn tractor load-carrying hitch/frame and spraying apparatus Oct. 31, 2000
6119789 Implement tracking hitch Sep. 19, 2000
6035943 Frame leveling system for tillage implements Mar. 14, 2000
6015016 Stowable driveline connection aid for power-driven farm implements Jan. 18, 2000
5975216 Low profile transferrable hydraulic three point hitch Nov. 2, 1999
5970695 Self contained transport for crop harvesting header Oct. 26, 1999
5855245 Disk opener carrier hitch Jan. 5, 1999
5713691 Low force release mechanism for high load latch Feb. 3, 1998
5404958 Lifting structure for an agricultural tractor Apr. 11, 1995
5394948 Hitch assembly for a tractor Mar. 7, 1995
5394947 Tubular hitch member ball connection for an implement Mar. 7, 1995
5363924 Weight transfer system for an agricultural machine Nov. 15, 1994
5360070 Mounting bracket for implement guide system Nov. 1, 1994
5347939 Agricultural apparatus Sep. 20, 1994

1 2 3










 
 
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