FR2235331A1 - Hollow profile with folded joint for evacuated valves - has milled plate edges at joint - Google Patents

Hollow profile with folded joint for evacuated valves - has milled plate edges at joint

Info

Publication number
FR2235331A1
FR2235331A1 FR7423218A FR7423218A FR2235331A1 FR 2235331 A1 FR2235331 A1 FR 2235331A1 FR 7423218 A FR7423218 A FR 7423218A FR 7423218 A FR7423218 A FR 7423218A FR 2235331 A1 FR2235331 A1 FR 2235331A1
Authority
FR
France
Prior art keywords
joint
folded
evacuated
valves
hollow profile
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
FR7423218A
Other languages
French (fr)
Other versions
FR2235331B1 (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.)
SIEGWART EMIL DT
Original Assignee
SIEGWART EMIL DT
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 SIEGWART EMIL DT filed Critical SIEGWART EMIL DT
Publication of FR2235331A1 publication Critical patent/FR2235331A1/en
Application granted granted Critical
Publication of FR2235331B1 publication Critical patent/FR2235331B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1406—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by sealing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Joints Allowing Movement (AREA)

Abstract

The enclosed and/or enclosing plate edges at the folded joint are milled. The enclosed edge can be thickened where the milling occurs. Rigidity of the folded hollow valve profile is improved by e.g. knurling or serrating both facing edges, which thus hook into each other. The thickened part is obtained by e.g. upsetting or swaging and may have a radius of 0.6 to 1 times the plate thickness. In an alternative design the circular cross-Section of the end folds, may be of trapezoidal configuration.
FR7423218A 1973-06-30 1974-06-28 Hollow profile with folded joint for evacuated valves - has milled plate edges at joint Granted FR2235331A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7324288 1973-06-30

Publications (2)

Publication Number Publication Date
FR2235331A1 true FR2235331A1 (en) 1975-01-24
FR2235331B1 FR2235331B1 (en) 1979-07-27

Family

ID=6639403

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7423218A Granted FR2235331A1 (en) 1973-06-30 1974-06-28 Hollow profile with folded joint for evacuated valves - has milled plate edges at joint

Country Status (5)

Country Link
AT (1) AT328676B (en)
CH (1) CH578147A5 (en)
FR (1) FR2235331A1 (en)
NL (1) NL7407834A (en)
SE (1) SE391009B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9307126U1 (en) * 1993-05-11 1994-02-17 Gebhardt-Stahl GmbH, 59457 Werl Hollow profile for the formation of ventilation control flaps
CN103994564A (en) * 2014-05-23 2014-08-20 大连兆和科技发展有限公司 Shuttle-shaped blade device for automobile coating plant

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263668B (en) * 1963-02-14 1968-03-21 Doehner Ag Method and device for the production of hollow bodies provided with folded edges

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263668B (en) * 1963-02-14 1968-03-21 Doehner Ag Method and device for the production of hollow bodies provided with folded edges

Also Published As

Publication number Publication date
CH578147A5 (en) 1976-07-30
AT328676B (en) 1976-04-12
SE7407514L (en) 1975-01-02
SE391009B (en) 1977-01-31
FR2235331B1 (en) 1979-07-27
ATA465174A (en) 1975-06-15
NL7407834A (en) 1975-01-02

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