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 and system for security authentication of radio frequency identification
Simultaneous wafer bonding and interconnect joining
Intermediate film for laminated glasses, and laminated glass
Method of manufacturing pipe with branch
Battery pack with interchangeable circuit substrates
Piezoelectric ultrasonic transducer apparatus
Methods of enhancing diabetes resolution
  Randomly Featured Patents
Platinum complex and malignant tumor treating drug containing the same
Photocatalytic air treatment process under room light
Capacitor for measuring forces
Gear pump having input and output screw shafts with a decreasing flight depth toward a gear section in transfer mix areas
Method employed by a base station for controlling initial power ramp-up using short codes
Sol gel formation of polysilicate, titania, and alumina interlayers for enhanced adhesion of metal films on substrates
Method of constructing gray value or geometric models of anatomic entity in medical image
System and method for dynamic windowing
Programmable timing module for adjusting clock in bus system
Organic semiconductor material, organic semiconductor structure and organic semiconductor apparatus