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Class Information
Number: 172/248
Name: Earth working > Convertible; or changeable by disassembly or assembly > To different type of hitch
Description: Apparatus in which an apparatus under the class definition having one distinct type of draft connection to a propelling means is convertible or changeable to an apparatus having another distinct type of draft connection to a propelling means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7547033 |
Convertible hitch |
Jun. 16, 2009 |
| 7478823 |
Drawbar clevis assembly |
Jan. 20, 2009 |
| 7284620 |
Detachable side mount hitch system for an agricultural implement |
Oct. 23, 2007 |
| 6776432 |
Drawbar adapter for pull-through swivel hitch |
Aug. 17, 2004 |
| 6178728 |
Dual implement hitch |
Jan. 30, 2001 |
| 5722678 |
Trailer coupling assembly |
Mar. 3, 1998 |
| 5720352 |
Hitch for two unit planter |
Feb. 24, 1998 |
| 5709274 |
Conversion hitch |
Jan. 20, 1998 |
| 5690182 |
Apparatus facilitating connection of trailer implement to tractor three-point hitch system |
Nov. 25, 1997 |
| 5257797 |
Tractor hitch |
Nov. 2, 1993 |
| 5193625 |
Tractor drawbar hitch adaptor |
Mar. 16, 1993 |
| 5191942 |
Agricultural frame for propulsion of ground working implements |
Mar. 9, 1993 |
| 5129463 |
Conservation tillage implement convertible for end transport |
Jul. 14, 1992 |
| 5109931 |
Tractor drawbar hitch |
May. 5, 1992 |
| 5094300 |
Attachment for guidance of pull-type implements |
Mar. 10, 1992 |
| 5054560 |
Transporting caster wheels |
Oct. 8, 1991 |
| 5000269 |
Device for attaching working machine to vehicle |
Mar. 19, 1991 |
| 5000268 |
Lifting assembly for agricultural implements |
Mar. 19, 1991 |
| 4971154 |
Harrow assembly |
Nov. 20, 1990 |
| 4905912 |
Side mounted or pull type particulate material spreader |
Mar. 6, 1990 |
| 4875527 |
Dual implement hitch assembly |
Oct. 24, 1989 |
| 4871028 |
Articulated implement frame with swing hitch |
Oct. 3, 1989 |
| 4821811 |
Mobile support frame |
Apr. 18, 1989 |
| 4819738 |
Vehicle for supporting an implement |
Apr. 11, 1989 |
| 4800962 |
Planter hydraulic system with means for locking row markers during transport |
Jan. 31, 1989 |
| 4776606 |
Hitch and drive structure for pto-driven, semi-integral implement |
Oct. 11, 1988 |
| 4725068 |
Convertible towing hitch |
Feb. 16, 1988 |
| 4609203 |
Hitch structure with variable link |
Sep. 2, 1986 |
| 4573309 |
Pull-type windrower |
Mar. 4, 1986 |
| 4569296 |
Agricultural tool bar and chemical applicator |
Feb. 11, 1986 |
| 4552375 |
Convertible implement frame pulled lengthwise in the transport position |
Nov. 12, 1985 |
| 4506904 |
Agricultural implement convertible between use and transport positions |
Mar. 26, 1985 |
| 4500105 |
Agricultural implement hitch assembly |
Feb. 19, 1985 |
| 4460193 |
Pull type swather assembly and mounting therefor |
Jul. 17, 1984 |
| 4433735 |
Sprayer trailer, tillage implement and hitch for attaching implement to trailer |
Feb. 28, 1984 |
| 4431207 |
Automatic hitch device |
Feb. 14, 1984 |
| 4389058 |
Hitch assembly |
Jun. 21, 1983 |
| 4377296 |
Hitching apparatus |
Mar. 22, 1983 |
| 4361341 |
Hitch for draft implement |
Nov. 30, 1982 |
| 4346909 |
Transport mechanism for single and multiple unit pull type implements |
Aug. 31, 1982 |
| 4336954 |
Tractor trailer hitch |
Jun. 29, 1982 |
| 4283071 |
Adjustable length coupling for towing and lifting a tractor drawn implement |
Aug. 11, 1981 |
| 4283071 |
Adjustable length coupling for towing and lifting a tractor drawn implement |
Aug. 11, 1981 |
| 4220350 |
Tongue for connecting a draft implement to a towing vehicle |
Sep. 2, 1980 |
| 4204699 |
Hitch for draft implement |
May. 27, 1980 |
| 4202474 |
Machine for spreading fertilizer and seed |
May. 13, 1980 |
| 4196778 |
Particulate material spreader with selectively detachable three-point linkage |
Apr. 8, 1980 |
| 4186879 |
Drift free spraying apparatus |
Feb. 5, 1980 |
| 4186805 |
Ground working implement |
Feb. 5, 1980 |
| 4127283 |
Multiple drill hitch assembly |
Nov. 28, 1978 |
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