U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."

Napoleon Bonaparte ; When told of the Robert Fulton steamboat

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 172/291 - Wheel behind tool


Subclass of Class 172 - Earth working
Definition: Apparatus in which the wheel is located to the rear of the
No. of patents: 5
Last issue date: 02/16/1993


NumberTitleIssue Date
5186261On-land plow assembly with a plurality of adjustable plow units
A plow assembly adapted for connection to a tractor and including a plurality of plow units commonly connected to a beam which is inclined relative to the direction of travel of the plow assembly. A ground engaging steering wheel supporting a rear end of ...
02/16/1993
4209067Draft control and tail beam device for ground working discer type agricultural implements and the like
A cultivating implement such as a discer is provided with a coulter disc engageable with the ground and secured to the tail beam with the depth being preset by the hydraulic setting of the main disc gang. A fluid operator is included at a preset pressure ...
06/24/1980
4098346Steering for plow with adjustable plow bottoms
A plow having a main frame beam disposed in a diagonal direction with respect to the direction of travel and having a plurality of plow bottoms equally spaced along the diagonal beam, each bottom being vertically pivotally supported on the beam. A furrow ...
07/04/1978
4049063Multi-unit adjustable plow system
A plow system includes a number of individual plow units mounted on a beam which is inclined relative to the direction of travel of a traction vehicle. The units are mounted for continuous rotation about vertical axes so that they may be opened or closed ...
09/20/1977
4036305Gang plow
A plurality of plow units are mounted to a main frame of a plow system for rotation about their vertical axes. The plow units are spaced at equal lateral increments and at uniformly increased distances from a pivot connection between the main frame and a ...
07/19/1977
 
Sign InRegister
Username  
Password   
forgot password?