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Class Information
Number: 172/250
Name: Earth working > Convertible; or changeable by disassembly or assembly > Changeable by disassembly or assembly
Description: Apparatus adapted to be altered so as to operate in a different way or change its function in some way by (1) the steps of disassembling the apparatus in some major portion and then reassembling the apparatus with the same or different portions, (2) the step of disassembling some major portion from the apparatus, or (3) the step of assembling some major portion to the apparatus.

Sub-classes under this class:

Class Number Class Name Patents
172/253 Tool added or substracted 63
172/251 Tool changeable to diverse tool 2
172/254 Tool rearranged on support structure 17

Patents under this class:

Patent Number Title Of Patent Date Issued
7874391 Multiple configuration utility vehicle Jan. 25, 2011
6523284 Multi-purpose material handling apparatus Feb. 25, 2003
6345489 Wheeled lawn care unit Feb. 12, 2002
6163987 Removable blade assembly for trencher machine Dec. 26, 2000
5809671 Tiller with adjustable depth cutter and snow comb entry angle Sep. 22, 1998
5632106 Tiller with adjustable depth cutter and snow comb entry angle May. 27, 1997
5404660 Mechanism for supporting an earthworking etc. tool Apr. 11, 1995
5156215 Counterweight assembly for crawler tractor Oct. 20, 1992
5084992 Snow tiller with compactor pan Feb. 4, 1992
5014792 Garden glove tool May. 14, 1991
4679634 Apparatus for extending the frame of a tractor Jul. 14, 1987
4640366 Cultivator Feb. 3, 1987
4453600 Signal shank parallel ripper apparatus Jun. 12, 1984
4436040 Landscaping and seeding apparatus Mar. 13, 1984
4378052 Articulated tractor attachment with roller Mar. 29, 1983
4013129 Ripper for attachment to tractor Mar. 22, 1977

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