Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/290
Name: Boring or penetrating the earth > Cutter element laterally shiftable below ground (e.g., expansible) > With latch
Description: Apparatus combined with a movable member which engages the laterally movable cutter element to hold it in one position.










Patents under this class:

Patent Number Title Of Patent Date Issued
7730974 Self actuating underreamer Jun. 8, 2010
7370712 Under reamer May. 13, 2008
6929076 Bore hole underreamer having extendible cutting arms Aug. 16, 2005
4091883 Underreaming tool with overriding extended arm retainer May. 30, 1978











 
 
  Recently Added Patents
Method of isolating human neuroepithelial precursor cells from human fetal tissue
Wiring structure in a semiconductor device, method of forming the wiring structure, semiconductor device including the wiring structure and method of manufacturing the semiconductor device
Non-zero rounding and prediction mode selection techniques in video encoding
Novelty headband
Method for switching channels in a wireless communication network
Memory access monitoring method and device
Systems and methods for adaptive blind mode equalization
  Randomly Featured Patents
Curing agent compositions for epoxy resins and epoxy resin compositions
Electrical contact switch with an extremely small actuating movement
Tube packing extension assembly for use in high temperature gas flow sensing elements and the like
Shock-absorbing device for footwear
Wire tester with flashlight
Autofocus apparatus utilizing luma and chroma components to determine whether focusing is possible
Office automation system with interrupt feature
Heater drive circuit for controlling ink temperature in ink jet printer
Non re-useable disposable hypodermic syringe
Electronic device