Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/275
Name: Boring or penetrating the earth > Cutter element laterally shiftable below ground (e.g., expansible) > With shifting mechanism spring biased to operative position > With separate latch
Description: Apparatus combined with a movable member which is separate from the laterally movable cutter element and which engages the cutter element or some part of the resiliently biased mechanism to hold the cutter element in one position.










Sub-classes under this class:

Class Number Class Name Patents
175/276 Frangible or discardable element 6
175/277 Latch holds mechanism retracted 2


Patents under this class:

Patent Number Title Of Patent Date Issued
7703553 Downhole tool having radially extendable members Apr. 27, 2010
4693328 Expandable well drilling tool Sep. 15, 1987











 
 
  Recently Added Patents
Rewriting branch instructions using branch stubs
Dental composition, kit of parts and use thereof
Block polymers and their process of preparation
Account and customer creation in an on-line banking model
Pharmaceutical compositions of paclitaxel, paclitaxel analogs or paclitaxel conjugates and related methods of preparation and use
Conductor-mixed active electrode material, electrode structure, rechargeable battery, and manufacturing method of conductor-mixed active electrode material
Semiconductor device having a bonding pad and shield structure of different thickness
  Randomly Featured Patents
Pharmaceutical composition
Printing a plurality of print jobs of a group in a designated order
Data processing system with application-controlled allocation of file storage space
Method and apparatus for blasting parts
Phosphorus compounds
Method for concealing dark defect in image sensor
User separation in space division multiple access for a multi-carrier communication system
Container insert
Ringing kettle
Foldable mat