LandOfFree - US Patents - Listing for Earth working

Earth working – Mounting for pushed tool at end of motor vehicle – With tool-carried ground support

Front-mounted leveling and tillage implement

Earth working – Mounting for pushed tool at end of motor vehicle

Frontal connection apparatus for tractors

Earth working – Mast type hitch – Including blade – scraper – or smoother

Frozen topsoil plow

Earth working – Scraper between front and rear ground supports of vehicle

Full support bearing for grader circle

Earth working – Plural wheeled implements – Outrigged implement adjustable inwardly

Full truss tool bar

Earth working – Alternating for right or left hand operation – Axially rotatable implement

Fully mounted variable width plow

Earth working – Diverse tools – Three or more diverse implements following same path

Furrow clearing apparatus for the preparation of seed beds

Earth working – Diverse tools – Three or more diverse implements following same path

Furrow clearing apparatus for the preparation of seed beds

Earth working – Rolling – rotating or orbitally moving tool – Tool has circumferentially spaced teeth – tines – blades or...

Furrow closing and leveling apparatus

Earth working – Diverse tools – Laterally spaced like tools with intermediate diverse tool

Furrow closing apparatus

Earth working – Guided by walking attendant; supported – propelled – or held... – Hand tool

Furrow covering hoe for one handed operation

Earth working – Rolling – rotating or orbitally moving tool – With means for stopping or retarding rotation

Furrow damming implement

Earth working – With indicating or sighting means

Furrow follower vision correction system

Earth working – Plural relatively movable tools – Plural tool groups relatively vertically movable because of...

Furrow forming apparatus for attachment to a tool bar

Earth working – Tool – standard or connection – Spring biased or formed tool or tool part

Furrow opener assembly with integral down-pressure adjustment

Earth working – Having tool overload shift controlled by a fluid pressure...

Furrow opener operating apparatus

Earth working – Guided by walking attendant; supported – propelled – or held... – Hand tool

Furrow opening, closing and soil firming device for seed plantin

Earth working – Rolling – rotating or orbitally moving tool – With spring means other than for detent

Furrow-forming attachment for a tractor

Earth working – Rolling – rotating or orbitally moving tool – Tool has circumferentially spaced teeth – tines – blades or...

Furrow/ditch cleaner apparatus