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

Icon_funbox Bizarre Patents

Patent No. 5571247

Self Containing Enclosure for Protection from Killer Bees

A self contained protective enclosure with an opening for entry and egress and a screen for ventilation and viewing.

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 172/639 - Specific mounting for pivoted tool bar


Subclass of Class 172 - Earth working
Definition: Apparatus in which the structural features or details of
No. of patents: 7
Last issue date: 04/22/1997


NumberTitleIssue Date
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
5398771Grain Drill
A grain drill is disclosed having a folding frame for parallel operation and a parallel link system that controls the tension to earth openers in order to produce relatively constant downward pressure for the openers. The grain drill includes a rotating t...
03/21/1995
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
4624322Harrow with link having spike support attitude control
A flexible spike-tooth harrow having a plurality of tooth-supporting angles spaced fore-and-aft by connecting structure including reversible link straps having opposed edge surfaces on one end thereof tapered with respect to the axis of the strap at diffe...
11/25/1986
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
3976145Finish tools with mounting bracket therefor
An inverted U-shaped bracket is designed to flexibly mount transverse harrow tine supporting bars for independent movement of each other upon longitudinally extending implement carrier arms to permit drag angle adjustment and ability to back up without di...
08/24/1976
 
Sign InRegister
Username  
Password   
forgot password?