Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 175/281
Name: Boring or penetrating the earth > Cutter element laterally shiftable below ground (e.g., expansible) > With shifting mechanism spring biased to operative position > Cutter element substantially longitudinally movable on shaft
Description: Apparatus in which the laterally movable cutter element is carried on the bit head or shaft so that the cutter element is bodily movable generally longitudinally relative to the bit head or shaft to cause movement of the cutter element.

Sub-classes under this class:

Class Number Class Name Patents
175/282 Plural elements expanded into single socket 0
175/283 With forwardly extending noncutting portion 3

Patents under this class:

Patent Number Title Of Patent Date Issued
8281880 Expandable tool for an earth boring system Oct. 9, 2012
4842082 Variable outside diameter tool for use in pikewells Jun. 27, 1989

  Recently Added Patents
Discharge lamp lighting circuit
Method for improving the performance of browser-based, formula-driven parametric objects
Integrated circuit packaging system with an encapsulation and method of manufacture thereof
Metal melting apparatus and method for melting metal
Faucet handle
Communication system including relay station and data frame for the communication system
Systems and methods for authorizing, authenticating and accounting users having transparent computer access to a network using a gateway device
  Randomly Featured Patents
Fiberoptic clearance detection system and method
Low-damage multilayer mirror for the soft X-ray region
Fluid compressor
Stamping methods and devices
Roller board with a pivoting roller unit which is adapted to provide enhanced stability during turning movement
Production of heat-shrinkable polyimide films
System having multiple user input stations and multiple mail preparation apparatus for preparing and franking a mail piece
Audible signal device
Multi-optical-path photoelectric switch
Interconnect assembly for use in evaluating probing networks