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Class Information
Number: 172/125A
Name: Earth working >
Description:










Sub-classes under this class:

Class Number Class Name Patents
172/1 Processes 117
172/126 With earth marker 63
172/13 Lawn edger 57
172/133 Diverse tools 12
172/19 Sod cutter 88
172/2 Automatic power control 249
172/204 Alternating for right or left hand operation (other than scraper) 6
172/21 Lawn aerator or perforator, or plug remover 183
172/23 Driven from or guided by stationary object, or anchored 10
172/233 With obstruction feeler for moving or releasing implement to avoid obstruction (includes dam former) 7
172/236 Ground engageable draft responsive lever 2
172/238 Ground support moved vertically relative to frame by draft means 2
172/239 Draft, pitch or ground level responsive depth control 38
172/240 With ground support engageable with ground for transport only 35
172/245 Convertible; or changeable by disassembly or assembly 13
172/255 Turn lifts tool off or lowers tool into ground 5
172/256 Propulsion unit guided by walking attendant or part of articulated vehicle 16
172/260.5 Having tool overload shift controlled by a fluid pressure device 49
172/261 Overload shifting 23
172/27 With means for cutting or shredding plants without soil disturbance 4
172/272 With means to facilitate mounting of implement on motor vehicle 254
172/278 With wheel steering or actuator for horizontally angling wheel axis 11
172/29 With means for shifting surface material without soil disturbance 17
172/292 Specific propelling means 27
172/293 Series of like elements sequentially operated by power cycle 1
172/297 Tool forward of rear of motor vehicle 15
172/310 Plural wheeled implements 46
172/315 Actuator on trailing implement, controlled from propelling vehicle 20
172/317 Actuator on vehicle for relatively moving parts of trailing implement 2
172/32 With separating after earth working 22
172/321 Actuator on vehicle for moving wheeled implement 10
172/322 With actuator for rocking tool about wheel axis 11
172/324 With actuator on trailing ground supported frame for moving draft means laterally or vertically 13
172/329 Guided by walking attendant; supported, propelled, or held in position by attendant 8
172/33 With power driven moldboard, conveyer or handler 42
172/34 Complete apparatus adapted for use upside down 2
172/35 With drive means for tool or cleaner 7
172/382 Multiple level tools 11
172/383 Axis of rotation of wheel lockable or angularly adjustable 12
172/387 With wheel substitute (e.g., runner, etc.) 14
172/395 With ground support vertically adjustable relative to frame 42
172/430 With indicating or sighting means 81
172/431 With seat or attendant's station 10
172/437 With tool sharpener 0
172/438 Combined 30
172/439 Mast type hitch (e.g., three point hitch, etc.) 208
172/452 With actuator adapted to lift tool for transport on wheeled frame or broadly claimed implement 53
172/507 Ground support movable horizontally 5
172/508 With guard, shield or plant diverter 27
172/518 Rolling, rotating or orbitally moving tool 30
172/605 Shiftable hitch moves tool relative to frame 20
172/606 With cleaner 13
172/611 With weight 50
172/612 Fabric or flexible tool 41
172/613 Plural relatively movable tools 4
172/663 With actuator 14
172/669 With wheel; or supported on wheel frame or broadly claimed implement 16
172/677 With draft detail 102
172/681 Tool, standard or connection 18
172/776 Miscellaneous (e.g., frames, etc.) 170
172/777 Scraper supports narrow depending tool 34
172/779 Scraper position automatically controlled by linkage for levelling 11
172/780 Scraper between widely spaced front and rear ground supports 20
172/781 Scraper between front and rear ground supports of vehicle 38
172/799.5 Towed scraper with ground support wheels 51
172/810 Mounting for pushed tool at end of motor vehicle 48
172/900 Plant thinners 3


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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