GB2271944B - Production of ductwork systems - Google Patents

Production of ductwork systems

Info

Publication number
GB2271944B
GB2271944B GB9222867A GB9222867A GB2271944B GB 2271944 B GB2271944 B GB 2271944B GB 9222867 A GB9222867 A GB 9222867A GB 9222867 A GB9222867 A GB 9222867A GB 2271944 B GB2271944 B GB 2271944B
Authority
GB
United Kingdom
Prior art keywords
production
ductwork systems
ductwork
systems
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9222867A
Other versions
GB9222867D0 (en
GB2271944A (en
Inventor
David Richard Hurst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9222867A priority Critical patent/GB2271944B/en
Publication of GB9222867D0 publication Critical patent/GB9222867D0/en
Publication of GB2271944A publication Critical patent/GB2271944A/en
Application granted granted Critical
Publication of GB2271944B publication Critical patent/GB2271944B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/286—Making tube fittings for connecting pipes, e.g. U-pieces starting from sheet material
GB9222867A 1992-10-31 1992-10-31 Production of ductwork systems Expired - Fee Related GB2271944B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9222867A GB2271944B (en) 1992-10-31 1992-10-31 Production of ductwork systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9222867A GB2271944B (en) 1992-10-31 1992-10-31 Production of ductwork systems

Publications (3)

Publication Number Publication Date
GB9222867D0 GB9222867D0 (en) 1992-12-16
GB2271944A GB2271944A (en) 1994-05-04
GB2271944B true GB2271944B (en) 1995-12-06

Family

ID=10724356

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9222867A Expired - Fee Related GB2271944B (en) 1992-10-31 1992-10-31 Production of ductwork systems

Country Status (1)

Country Link
GB (1) GB2271944B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IES970500A2 (en) * 1997-07-04 1998-02-25 John Bolger Manufacture of metal casings

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100413A (en) * 1959-07-29 1963-08-13 Gen Electric Duct-piercing machine
US3617702A (en) * 1969-06-10 1971-11-02 Du Pont Apparatus and method for perforating sheet material
US3726120A (en) * 1971-12-02 1973-04-10 Hugert Mfg Co Ductwork forming machine
US3901174A (en) * 1974-02-28 1975-08-26 Rod M Priest Duct-making machine
WO1981003630A1 (en) * 1980-06-11 1981-12-24 S Norlund A blank for manufacturing an air duct of rectangular cross section
US4847778A (en) * 1987-09-01 1989-07-11 Daley Nile W Computerized sheet metal layout system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100413A (en) * 1959-07-29 1963-08-13 Gen Electric Duct-piercing machine
US3617702A (en) * 1969-06-10 1971-11-02 Du Pont Apparatus and method for perforating sheet material
US3726120A (en) * 1971-12-02 1973-04-10 Hugert Mfg Co Ductwork forming machine
US3901174A (en) * 1974-02-28 1975-08-26 Rod M Priest Duct-making machine
WO1981003630A1 (en) * 1980-06-11 1981-12-24 S Norlund A blank for manufacturing an air duct of rectangular cross section
US4847778A (en) * 1987-09-01 1989-07-11 Daley Nile W Computerized sheet metal layout system

Also Published As

Publication number Publication date
GB9222867D0 (en) 1992-12-16
GB2271944A (en) 1994-05-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20061031