Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 172/618
Name: Earth working > Plural relatively movable tools > Tools assume different angularity for opposite draft
Description: Apparatus in which the earth working elements or tooth bars pivot about a horizontal transverse axis to different working angles when draft force is applied to the apparatus in opposite directions and including means to limit the movement of the elements or tooth bars to a particular angularity in both directions.










Patents under this class:

Patent Number Title Of Patent Date Issued
5044449 Flex tine soil mulcher Sep. 3, 1991
4262752 Ground wheel and plowing implement connected thereto for filling wheel tracks Apr. 21, 1981
4252198 Ground levelling attachment for tractors Feb. 24, 1981
4220211 Harrow with tine stop therefor Sep. 2, 1980
4018255 Tree saw Apr. 19, 1977
3976145 Finish tools with mounting bracket therefor Aug. 24, 1976











 
 
  Recently Added Patents
Orthogonal tunable antenna array for wireless communication devices
Anti-FGFR3 antibodies and methods using same
Image forming apparatus having a primary transfer unit, a secondary transfer unit, and a direct transfer unit
Systems and methods for updating a data store using a transaction store
Nonvolatile semiconductor memory device and method of manufacturing the same
Encoder that detects positional information of a moving body generating interference fringes that move in opposite directions
Systems and methods for online search recirculation and query categorization
  Randomly Featured Patents
Information processing device and display information editing method of information processing device
Recording apparatus and recording method
Pharmaceutical preparations
Printed media produced by permanent heat activated printing process
Vehicle door check
Belt buckle
Combined tricycle trailer and backrest-hitch
Bobbin extractor
Cartesian parallel manipulators
Polystyrene having high degree of expandability, and formulation having a highly-expandable polymer therein