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

Icon_funbox Quotables

"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "

Mark Twain ; Christmas greetings, 1890

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 172/634 - Parallel, pivotally adjusted tool bars


Subclass of Class 172 - Earth working
Definition: Apparatus in which a plurality of parallel bars, each bar
No. of patents: 6
Last issue date: 02/10/2004


NumberTitleIssue Date
6688405Simplified adjustable tine harrow assembly
A simplified, low component harrow attachment includes several clevis-like mounting castings pivotally connected between two identical flat side sheets. A link which pivots the ranks in unison is pinned to the legs of the mounting castings between the she...
02/10/2004
5622229Harrow bar assembly
A harrow drawbar assembly is described which includes a harrow frame with depending tines and at least one spring strap. The at least one spring strap has a first end and a second end. The second end of the at least one spring strap is secured to the harr...
04/22/1997
5443127Spring tooth harrow
A spring tooth harrow comprising an elongated tool bar having a plurality of harrow sections secured thereto by adjustable mounting brackets to enable the harrow section to be raised or lowered with respect to the draw bar. Each harrow section includes a ...
08/22/1995
5358056Spring tooth harrow
A spring tooth harrow comprising an elongated tool bar having a plurality of harrow sections cured thereto by adjustable mounting brackets to enable the harrow section to be raised or lowered with respect to the draw bar. Each harrow section includes a pa...
10/25/1994
5044449Flex tine soil mulcher
This invention relates to a flex tine soil mulcher comprised of a plurality of spaced parallel elongated support arms which extend in a lateral direction with respect to the travel of the device over a cultivated field. A plurality of elongated spaced soi...
09/03/1991
4615286Grain drill mounted harrow device
An attachment for a tractor drawn grain drill is disclosed having a horizontal array of harrow tines staggered along a plurality of transverse rows with each row commonly supported by a rotatable control rod with a tine coiled portion encircling the contr...
10/07/1986
 
Sign InRegister
Username  
Password   
forgot password?