Other

Caterpillar Inc.

Gary C Yerby

Daniel B Meyers

Thomas J Yaniak

Chetan Vilas Dahiwal

Timothy F Nusz

Scott A Johnston

Michael Alan Pershing

Swetha Suresh

Akilan Appavu

Benjamin J Bargfrede

Todd M Blindt

Roller cone drill bits and methods of increasing the wear resistance of a roller cone drill bit are disclosed. The roller cone drill bit includes a plurality of rolling elements within a bearing assembly of a cone. Each rolling element of the plurality of rolling elements may have a surface hardness of HRC 59-63, a hardened depth that is 0.5 mm to 3.0 mm deep, and may be derived from a low carbon bearing steel material. The hardened depth is measured from the surface of each rolling element and the low carbon bearing steel material has, by weight percent, from 0.12% to 0.25% carbon.

Bearing materials for tricone bit rolling elements

An animal trap for small animals, such as mice, rats, squirrels, and the like, the trap includes an enclosure over which is arranged a bait compartment with two oppositely-facing tilting bottom panels, each panel being mounted on a pivot in the bait compartment with a base edge having a counterweight, a magnetic means, and a spring mechanism on one side of the pivot positioned proximate to the pivot and with a facing distal edge on an opposite side of the pivot and spaced from the pivot. Two ramps arranged on opposite sides of the bait compartment lead from a ground surface to the base edges of the tilting bottom panels to provide an apparent continuous passage through the animal trap. The counterweights balance the panels, the magnetic means is adapted to retain the panels in a horizontal position with a predetermined force, and the spring mechanism is constructed to return the panels to the horizontal position after tilting.

Rodent trap

A portable rodent exterminator for transporting and/or exterminating rodents collected in container-type traps designed to couple to the exterminator during transfer, the exterminator is comprised of a container having a removable top, a retractable divider plate, a storage chamber below the divider plate, and a viewing window in the side of the container for viewing the transfer and extermination process.

Portable rodent exterminator

Growing community of inventors

Daly City, CA, United States of America

Gary C Yerby