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US7104103: Method for producing a metal tube

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Filing Information

Inventor(s) Tetsuya Ooyauchi · Masayuki Okano ·
Assignee(s) Terumo Kabushiki Kaisha · Okano Kogyo Co., Ltd. ·
Attorney/Agent(s) Buchanan Ingersoll & Rooney PC ·
Primary Examiner Lowell A. Larson ·
Application Number US11176329
Filing date 07/08/2005
Issue date 09/12/2006
Prior Publication Data
Predicted expiration date 10/30/2022
U.S. Classifications 723/68  · 72/51  ·
International Classifications B21G108  ·
Kind CodeB2
Related U.S. Application DataThis application is a divisional of U.S. application Ser. No. 10/283,291 filed on Oct. 30, 2002, now U.S. Pat. No. 6,915,821.
Foreign Priority JP2001334143 - 10/31/2001 ·
2 Claims, 5 Drawings


Abstract

A small diameter metal tube whose inner surface is smooth and its production method are provided. The metal tube has an inner diameter of up to 1.0 mm and its inner surface has a maximum height difference (Rf) in the surface roughness of up to 3 μm.

Independent Claims | See all claims (2)

  1. 1. A method for producing a metal tube, comprising the steps of: providing a metal thin plate having a maximum height difference (Rf) in the surface roughness of up to 3 mm; blanking a plate member having a development shape of the metal tube from said metal thin plate such that said plate member is left partly tied to said metal thin plate; press forming said plate member into a tube member; and cutting parts tying said metal thin plate to said plate member to produce the metal tube whose inner surface has a maximum height difference (Rf) in the surface roughness of up to 3 mm and which has an inner diameter of up to 1.0 mm.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US2855929 BECTON DICKINSON CO Hein, Jr. Oct 1958
US3173200 HANNAH DUNMIRE Dunmire et al. Mar 1965
US4672734 Yasuo Nakamura Kawada et al. Jun 1987
US4785868 Titan Medical, Inc. Koenig, Jr. Nov 1988
US5294309 Agency of Industrial Science and Technology Seimiya et al. Mar 1994
US5640874 United States Surgical Corporation Vecsey Jun 1997
US5842086 Fuji Xerox Co., Ltd. Honma et al. Nov 1998
US6202465* Micro Stamping Corporation Jankoski et al. Mar 2001
US6337459 Daido Tokushuko Kabushiki Kaisha Terwijn et al. Jan 2002
US6579628 Daido Tokushuko Kabushiki Kaisha Takeuchi et al. Jun 2003

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP0180125Yukihiko KarasawaMay 1986
EP0452501DIRECTOR-GENERAL OF THE AGENCY OFOct 1991
EP1308221TERUMO KABUSHIKI KAISHAMay 2003
JP03284264Dec 1991
JP09308910KYORITSU SEIKI:KKFeb 1997
JP2001225106TOKIN CORPAug 2001
JP20041053Jan 2004
WO199837853Sep 1998
* cited by examiner

Referenced By

The current document is not referenced by other documents.