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
Liquid crystal display device and driving method thereof
Image scanning apparatus and image forming apparatus
Diazeniumdiolated phosphorylcholine polymers for nitric oxide release
Owner-brokered knowledge sharing machine
Lens barrel and imaging device
Consistent retention and disposition of managed content and associated metadata
Dual functional medium shredding machine structure
  Randomly Featured Patents
Method and sporicidal compositions for synergistic disinfection or sterilization
Fractional horsepower gear motor
Electronically augmented multiplayer sporting game with virtual ball passed by infrared apparatus
Feminine urinary device
Dresser
Magnetic resonance imaging method
Electronic light generating element light bulb
Cosmetic appliances and methods of use
Method and apparatus for emission guided radiation therapy
Digital display advertising apparatus fixable to a printed directory