FR2451430A1 - Metal frame for access trap to ventilation shafts - is folded from sheet steel to have resilient T=shaped cross=section - Google Patents

Metal frame for access trap to ventilation shafts - is folded from sheet steel to have resilient T=shaped cross=section

Info

Publication number
FR2451430A1
FR2451430A1 FR7906734A FR7906734A FR2451430A1 FR 2451430 A1 FR2451430 A1 FR 2451430A1 FR 7906734 A FR7906734 A FR 7906734A FR 7906734 A FR7906734 A FR 7906734A FR 2451430 A1 FR2451430 A1 FR 2451430A1
Authority
FR
France
Prior art keywords
section
frame
sheet steel
resilient
folded
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.)
Granted
Application number
FR7906734A
Other languages
French (fr)
Other versions
FR2451430B1 (en
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.)
EDAC SA
Original Assignee
EDAC SA
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 EDAC SA filed Critical EDAC SA
Priority to FR7906734A priority Critical patent/FR2451430B1/en
Publication of FR2451430A1 publication Critical patent/FR2451430A1/en
Application granted granted Critical
Publication of FR2451430B1 publication Critical patent/FR2451430B1/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/01—Trap-doors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F19/00—Other details of constructional parts for finishing work on buildings
    • E04F19/08—Built-in cupboards; Masks of niches; Covers of holes enabling access to installations

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Abstract

The frame has a T-section profile bent from sheet steel for forming a web (2) and wing (3), the wing being bent three times further perpendicularly (4,5,6) to form an open caisson with the last edge (6) parallel to the web (2). The frame is made of four elements cut to length and welded together. The web has fixing holes (10) and screws (9) for fixing to the partition (8) and access cover (11) has an L section rim (12) for fitting on the face (5) of the frame, the connection between cover and frame being a magnet (13). It resists deformation due to impact, thermal stressing etc.
FR7906734A 1979-03-16 1979-03-16 METAL FRAME FOR CEILING DOOR OR ACCESS VENTILATION OR SIMILAR DUCT TRAP AND PROFILE FOR THEIR PRODUCTION Expired FR2451430B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7906734A FR2451430B1 (en) 1979-03-16 1979-03-16 METAL FRAME FOR CEILING DOOR OR ACCESS VENTILATION OR SIMILAR DUCT TRAP AND PROFILE FOR THEIR PRODUCTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7906734A FR2451430B1 (en) 1979-03-16 1979-03-16 METAL FRAME FOR CEILING DOOR OR ACCESS VENTILATION OR SIMILAR DUCT TRAP AND PROFILE FOR THEIR PRODUCTION

Publications (2)

Publication Number Publication Date
FR2451430A1 true FR2451430A1 (en) 1980-10-10
FR2451430B1 FR2451430B1 (en) 1986-03-28

Family

ID=9223207

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7906734A Expired FR2451430B1 (en) 1979-03-16 1979-03-16 METAL FRAME FOR CEILING DOOR OR ACCESS VENTILATION OR SIMILAR DUCT TRAP AND PROFILE FOR THEIR PRODUCTION

Country Status (1)

Country Link
FR (1) FR2451430B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2781514A1 (en) * 1998-07-27 2000-01-28 Saga Productions IMPROVED TRAPPON AND METHOD FOR ACCESSING A FALSE CEILING
GB2414263A (en) * 2004-05-22 2005-11-23 Tod Golding Loft door system
WO2011095275A1 (en) * 2010-02-05 2011-08-11 Richter-System Gmbh & Co Kg Closable inspection opening for drywall construction
RU212966U1 (en) * 2022-04-18 2022-08-16 Армен Георгиевич Багдасарян Technological hatch frame

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1843264A (en) * 1930-05-01 1932-02-02 Lyon Metal Products Inc Locker construction
US3945168A (en) * 1968-11-04 1976-03-23 Hambro Structural Systems Limited Reusable spanner bar
FR2328097A1 (en) * 1974-07-03 1977-05-13 Minka Treppen Gmbh Fireproof trap door with insulating frame - has insulation retained inside tray of trap door and insulation inside frame
US4103948A (en) * 1975-07-18 1978-08-01 Hiromitsu Naka Anchoring device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1843264A (en) * 1930-05-01 1932-02-02 Lyon Metal Products Inc Locker construction
US3945168A (en) * 1968-11-04 1976-03-23 Hambro Structural Systems Limited Reusable spanner bar
FR2328097A1 (en) * 1974-07-03 1977-05-13 Minka Treppen Gmbh Fireproof trap door with insulating frame - has insulation retained inside tray of trap door and insulation inside frame
US4103948A (en) * 1975-07-18 1978-08-01 Hiromitsu Naka Anchoring device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2781514A1 (en) * 1998-07-27 2000-01-28 Saga Productions IMPROVED TRAPPON AND METHOD FOR ACCESSING A FALSE CEILING
EP0976887A1 (en) * 1998-07-27 2000-02-02 Saga Productions Hatch and access method for a suspended ceiling
GB2414263A (en) * 2004-05-22 2005-11-23 Tod Golding Loft door system
WO2011095275A1 (en) * 2010-02-05 2011-08-11 Richter-System Gmbh & Co Kg Closable inspection opening for drywall construction
RU212966U1 (en) * 2022-04-18 2022-08-16 Армен Георгиевич Багдасарян Technological hatch frame

Also Published As

Publication number Publication date
FR2451430B1 (en) 1986-03-28

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Legal Events

Date Code Title Description
ST Notification of lapse