Featured patents

Multi-Piece Drill Head and Drill Including the Same
US 08827606 B2, Sept. 9, 2014, With central lead, X. Daniel Fang et al. / Kennametal Inc. (Latrobe, US)
A multi-piece spade drill head for a spade drill, the spade drill comprising…

Oil Supply Device for Hole Cutting Apparatus
US 08814481 B2, Aug. 26, 2014, Including tool with duct, Shohei Omi et al. / Omi Kogyo Co., Ltd. (Anjo-shi, Aichi-ken, JP)
An oil supply device for a hole cutting apparatus, comprising:…

Reamer
US 08708618 B2, April 29, 2014, Processes, Uwe Hobohm / Kennametal Inc. (Latrobe, US)
A reamer for the fine machining of a bore, the reamer comprising a plurality…

Precision Turning Tool
US 08684638 B2, April 1, 2014, With Signal, Indicator, Illuminator or Optical Means, Guenter Buck / Wohlhaupter GmbH (Frickenhausen, DE)
Precision turning tool, comprising:…

Depth Gauge for Drill Bit
US 08662801 B2, March 4, 2014, Depth-limiting member, Michael Peters et al. / Black & Decker Inc. (Newark, US)
A depth gauge for use with a drill bit, comprising:…

Tool Holder and Cutting Tool
US 08641336 B1, Feb. 4, 2014, With tool-retaining means, Charles A. Van Horssen
A tool holder, comprising:…

Core Drilling System With Torque Shaft
US 08647030 B2, Feb. 11, 2014, With Work-Engaging Structure Other Than Tool or Tool-Support, C. Warren Duncan et al.
A coring apparatus for forming a hole in a substrate, the apparatus comprising:…

Insert
US 08641334 B2, Feb. 4, 2014, Tool Having Crystalline Cutting Edge, Akira Kanaboshi et al. / Mitsubishi Materials Corporation (Tokyo, JP)
An insert attached to a hole machining tool having a tool body rotating about…

Form Tap Having a Plurality of Lobes
US 08602696 B2, Dec. 10, 2013, Extending outwardly from tool-axis, Harry Leroy Ellis
A form tap for tapping an article, the form tap comprising:…

Tool Chuck With Sleeve and Clutch Mechanism to Remove Operator Variability
US 08459905 B2, June 11, 2013, To control tool rotation, John E. Buck et al. / Black & Decker Inc. (Newark, US)
A power driver including a tool chuck, the power driver comprising:…

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