Cutting tap and method of making a cutting tap

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7665934
APP PUB NO 20080095587A1
SERIAL NO

11582805

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Abstract

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A cutting tap that has an elongate tap body with a fluted section at the axial forward end thereof wherein the fluted section includes a chamfered fluted section and a finishing fluted section. Each cutting thread in the chamfered fluted section has a cutting face disposed at a cutting face angle that becomes more negative the more axially rearward the cutting thread is from the axial forward end of the chamfered fluted section. Each cutting thread in the finishing fluted section has a cutting face disposed at a finishing cutting face angle that is essentially equal. The finishing cutting face angle is more negative than the cutting face angle for the cutting thread at the axial rearward termination of the chamfered fluted section.

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Patent Owner(s)

Patent OwnerAddress
KENNAMETAL INC1600 TECHNOLOGY WAY LATROBE PA 15650-0231
YAMAWA MFG CO LTDCHUO-KU TOKYO 104-0031

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akaki, Sadayuki Fukushima, JP 6 84
Henderer, Willard E Evans, US 12 174
Volokh, Vladimir Maalot, IL 22 193

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