GB1231996A - - Google Patents

Info

Publication number
GB1231996A
GB1231996A GB1231996DA GB1231996A GB 1231996 A GB1231996 A GB 1231996A GB 1231996D A GB1231996D A GB 1231996DA GB 1231996 A GB1231996 A GB 1231996A
Authority
GB
United Kingdom
Prior art keywords
aperture
margin
tabs
blank
tool
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
Application number
Other languages
English (en)
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 filed Critical
Publication of GB1231996A publication Critical patent/GB1231996A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/17—Rigid pipes obtained by bending a sheet longitudinally and connecting the edges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/003—Rigid pipes with a rectangular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0209—Ducting arrangements characterised by their connecting means, e.g. flanges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Duct Arrangements (AREA)
  • Supports For Pipes And Cables (AREA)
GB1231996D 1968-12-18 1969-10-10 Expired GB1231996A (th)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78481468A 1968-12-18 1968-12-18

Publications (1)

Publication Number Publication Date
GB1231996A true GB1231996A (th) 1971-05-12

Family

ID=25133607

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1231996D Expired GB1231996A (th) 1968-12-18 1969-10-10

Country Status (2)

Country Link
US (1) US3606404A (th)
GB (1) GB1231996A (th)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981003630A1 (en) * 1980-06-11 1981-12-24 S Norlund A blank for manufacturing an air duct of rectangular cross section

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858355A (en) * 1973-02-16 1975-01-07 Ruskin Mfg Co Air duct access door
US4625632A (en) * 1985-05-13 1986-12-02 Owl Flex, Inc. Damper and register box
US4720359A (en) * 1986-10-23 1988-01-19 The Marley Cooling Tower Company Wrapped fan cylinder for water cooling tower
US4930815A (en) * 1989-02-02 1990-06-05 Crown Products Company, Inc. Ring seal collar for air ducts
US5538293A (en) * 1994-11-18 1996-07-23 Thinking Vents, Inc. Secondary duct installation apparatus and method for a forced air ventilation system
US6244633B1 (en) * 1999-03-03 2001-06-12 Sheet Metal Specialists, Inc. Self-sealing collar for use in heating and air conditioning systems
US6273145B1 (en) 1999-03-16 2001-08-14 Paramount Concepts Ltd. Folded and hinged HVAC duct connector
US8561448B2 (en) * 2008-10-01 2013-10-22 Mestek Machinery, Inc. Duct blank seam and apparatus for making a duct blank seam
GB0818679D0 (en) * 2008-10-11 2008-11-19 Mccann Jamie fire retardant structures
WO2013177151A1 (en) * 2012-05-21 2013-11-28 Prischak Joseph J Foldable hvac conduit and duct collar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981003630A1 (en) * 1980-06-11 1981-12-24 S Norlund A blank for manufacturing an air duct of rectangular cross section

Also Published As

Publication number Publication date
US3606404A (en) 1971-09-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees