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(19)

(11)

2 505 374

(13)

(51)

IPC

B21H3/08(2006-01-01)

B24B39/02(2006-01-01)

B23G7/02(2006-01-01)

(21) (22)

Application

2012103575/02, 2012-02-02

(24)

Start date

2012-02-02

(22)

Actual filing date

2012-02-02

(45)

Published

2014-01-27

(72)

Inventor

Stepanov Jurij SergeevichKirichek Andrej ViktorovichAfonin Andrej NikolaevichSavvin Vjacheslav Viktorovich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Universitet Uchebno-Nauchno-Proizvodstvennyj Kompleks" Vpo Unpk")

BILLET INNER THREAD TAP Russian patent published in 2014 - IPC B21H3/08 B24B39/02 B23G7/02

Abstract RU 2505374 C2

FIELD: machine building.

SUBSTANCE: proposed tap comprises thread and cutting elements with cutting edges. Cutting elements are made at tap thread sockets, at the centre of side faces. Width of cutting element cutting edges equals that of formed thread top.

EFFECT: production of inner taper threads at billets from lower plasticity materials.

3 dwg

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RU 2 505 374 C2

Authors

Stepanov Jurij Sergeevich

Kirichek Andrej Viktorovich

Afonin Andrej Nikolaevich

Savvin Vjacheslav Viktorovich

Dates

2014-01-27—Published

2012-02-02—Filed