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Class 172/473 - Tool differentially or sequentially lifted at longitudinally spaced points


Subclass of Class 172 - Earth working
Definition: Apparatus in which the earth working element is positively
No. of patents: 2
Last issue date: 08/18/1987


NumberTitleIssue Date
4687407Three-point hitch loader
A loading device is releasably attachable to a conventional farm tractor or other vehicle, having a three-point hitch. The device includes a bar for providing a mechanical advantage during the initial lifting of a load from the ground. The device is adjus... 		08/18/1987
4313504Tandem ripper assembly
A ripper assembly (10) includes at least two ripper members (16,18) mounted in tandem relationship and adapted for connection to a vehicle (14). A linkage assembly (20) interconnects the ripper members. A hydraulic cylinder (44) is operable to raise and l... 		02/02/1982
 
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