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B21C37/125

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BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for Manufacture of tubes of special shape

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B21C37/125curved section

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Patents Grantslast 30 patents

Information Patent Grant
Duct cutting-and-forming device for elbow duct manufacturing device
- Patent number 12,151,272
- Issue date Nov 26, 2024
- Ok Tae Kim
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Elbow-shaped duct manufacturing apparatus
- Patent number 11,975,373
- Issue date May 7, 2024
- Sung Keun Noh
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Formation and rotational apparatus and method for cylindrical workp...
- Patent number 9,649,768
- Issue date May 16, 2017
- Mestek, Inc.
- Leland M. Rieck
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Formation and rotational apparatus and method for cylindrical workp...
- Patent number 9,216,447
- Issue date Dec 22, 2015
- Formtek, Inc.
- Leland M. Rieck
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Manufacturing apparatus and method of spiral duct including elbow
- Patent number 8,915,109
- Issue date Dec 23, 2014
- Jinwoong Technology Co., Ltd.
- Kyu-seok Cha
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Formation and rotational apparatus and method for cylindrical workp...
- Patent number 8,904,625
- Issue date Dec 9, 2014
- Formtek, Inc.
- Leland M. Rieck
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Formation and rotational apparatus for cylindrical workpieces
- Patent number 7,797,805
- Issue date Sep 21, 2010
- Formtek, Inc.
- Leland M. Rieck
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Apparatus and method for manufacturing spiral duct
- Patent number 7,730,754
- Issue date Jun 8, 2010
- Jinwoong Technology
- Kyu-Seok Cha
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method and apparatus for fabricating arcuate sheet metal components...
- Patent number 7,493,685
- Issue date Feb 24, 2009
- Robert Issagholian-Havai
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Elbow rotator
- Patent number 7,328,510
- Issue date Feb 12, 2008
- Met-Coil Systems, LLC
- Jairo Munoz
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of making a curved pipe
- Patent number 5,014,424
- Issue date May 14, 1991
- Kabushiki Kaisha Okada Seisakusho
- Tamotsu Takasugi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Helically wound elbow conduit and method of fabricating same
- Patent number 4,841,616
- Issue date Jun 27, 1989
- The Charles Stark Draper Laboratory, Inc.
- Daniel E. Whitney
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Apparatus for making connecting pipes for connecting ducts
- Patent number 4,704,885
- Issue date Nov 10, 1987
- Ariyoshi Nakamura
- Kenji Nakajima
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Machine for forming curved conduits
- Patent number 4,287,742
- Issue date Sep 8, 1981
- John H. Heiman
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
189267
- Patent number 189,267
- Issue date Apr 3, 1877
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
DUCT CUTTING-AND-FORMING DEVICE FOR ELBOW DUCT MANUFACTURING DEVICE
- Publication number 20220274147
- Publication date Sep 1, 2022
- Ok Tae KIM
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Elbow-Shaped Duct Manufacturing Apparatus
- Publication number 20220184681
- Publication date Jun 16, 2022
- Sung Keun NOH
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
MANUFACTURING APPARATUS AND METHOD OF SPIRAL DUCT INCLUDING ELBOW
- Publication number 20110072875
- Publication date Mar 31, 2011
- JINWOONG TECHNOLOGY CO., LTD.
- Kyu-seok Cha
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
FORMATION AND ROTATIONAL APPARATUS AND METHOD FOR CYLINDRICAL WORKP...
- Publication number 20100310347
- Publication date Dec 9, 2010
- FORMTEK, INC.
- LELAND M. RIECK
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Apparatus and method for manufacturing spiral duct
- Publication number 20070251285
- Publication date Nov 1, 2007
- Kyu-Seok Cha
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
A FORMATION AND ROTATIONAL APPARATUS AND METHOD FOR CYLINDRICAL WOR...
- Publication number 20060283010
- Publication date Dec 21, 2006
- FORMTEK, INC.
- LELAND M. RIECK
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Method and apparatus for fabricating arcuate sheet metal components...
- Publication number 20060090339
- Publication date May 4, 2006
- Robert Issagholian-Havai
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Elbow rotator
- Publication number 20040158986
- Publication date Aug 19, 2004
- MET-COIL SYSTEMS CORPORATION
- Jairo Munoz
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

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Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Duct cutting-and-forming device for elbow duct manufacturing device

Elbow-shaped duct manufacturing apparatus

Formation and rotational apparatus and method for cylindrical workp...

Formation and rotational apparatus and method for cylindrical workp...

Manufacturing apparatus and method of spiral duct including elbow

Formation and rotational apparatus and method for cylindrical workp...

Formation and rotational apparatus for cylindrical workpieces

Apparatus and method for manufacturing spiral duct

Method and apparatus for fabricating arcuate sheet metal components...

Elbow rotator

Method of making a curved pipe

Helically wound elbow conduit and method of fabricating same

Apparatus for making connecting pipes for connecting ducts

Machine for forming curved conduits

189267

Patents Applicationslast 30 patents

DUCT CUTTING-AND-FORMING DEVICE FOR ELBOW DUCT MANUFACTURING DEVICE

Elbow-Shaped Duct Manufacturing Apparatus

MANUFACTURING APPARATUS AND METHOD OF SPIRAL DUCT INCLUDING ELBOW

FORMATION AND ROTATIONAL APPARATUS AND METHOD FOR CYLINDRICAL WORKP...

Apparatus and method for manufacturing spiral duct

A FORMATION AND ROTATIONAL APPARATUS AND METHOD FOR CYLINDRICAL WOR...

Method and apparatus for fabricating arcuate sheet metal components...

Elbow rotator