Resources Contact Us Home
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
Method for switching channels in a wireless communication network
Pharmaceutical powder compositions
Nestable shallow container
Data distribution apparatus, data distribution method, and distribution control program
Headset, terminal, and method capable of switching headset mode
Scanning transmission electron microscope and axial adjustment method thereof
Liquid crystal display
  Randomly Featured Patents
Stochastic control optimization for sender-based flow control in a distributed stateful messaging system
Connector for flexible printed circuit
Symbol error detection for bluetooth enhanced data rate packets
Automotive service equipment and method for brake fluid exchange with wireless brake bleeding system
Protective ballistic shield
Method for improved synthesis of binary decision diagrams with inverted edges and quantifiable as well as nonquantifiable variables
MEMS device having deformable membrane characterized by mechanical persistence
Brush assembly for a floor cleaning unit
Pneumatic switch for low tire pressure warning system
Polycarbonate films of low flammability and improved stress crack resistance