Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Caterpillar board designed in particular for use on grass slopes










Image Number 4 for United States Patent #6039331.

The proposed crawler-mounted board (1) is specifically for the purpose of riding over grass or lawn slopes. It features a crawler unit which consists of two slightly concave-curved undercarriage tracks (12), the tracks being connected to one another by four cross-struts (13). The crawler unit can be mounted to a frame (2) made of tubing or rods. Each of the undercarriage tracks (12) consists of a long elongated body, a flexible crawler track chain, and large number of crawler track segments. A block can be mounted to the outside of each crawler track segment. While the crawler-mounted board is in motion, frictional forces act between the turf and the crawler track chains and the blocks of the crawler unit. These frictional forces cause the crawler track chains along with the crawler track segments to move around the body of the undercarriage tracks (12) in a closed circuit.








 
 
  Recently Added Patents
Image heating apparatus
Automatic engine oil life determination with a factor for oil quality
Device and method for quantizing and inverse quantizing LPC filters in a super-frame
High-speed comparator with asymmetric frequency response
Method and system for the assignment of security group information using a proxy
Blend polymer gas separation membrane
Faucet
  Randomly Featured Patents
Ball display apparatus
Apparatus for examining a biological object by using radiation
Analog-to-digital converter
Piston pump
Medical implants containing adenosine receptor agonists and methods for inhibitiing medical implant loosening
Over the counter medicinal container with surface ornamentation
Military communications antenna switching
Variable waveguide
Multiple pulsed-laser system for silicon crystallization
Bicycle brake having an improved adjustment mechanism for adjusting the position of a brake shoe relative to a wheel rim