CA979271A - I-shaped duct system - Google Patents

I-shaped duct system

Info

Publication number
CA979271A
CA979271A CA165,976A CA165976A CA979271A CA 979271 A CA979271 A CA 979271A CA 165976 A CA165976 A CA 165976A CA 979271 A CA979271 A CA 979271A
Authority
CA
Canada
Prior art keywords
duct system
shaped duct
shaped
duct
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
CA165,976A
Other languages
English (en)
Other versions
CA165976S (en
Inventor
Takao Katayama
Katsuhiko Otsuka
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.)
Tokyo Gas Co Ltd
Original Assignee
Tokyo Gas Co Ltd
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 Tokyo Gas Co Ltd filed Critical Tokyo Gas Co Ltd
Application granted granted Critical
Publication of CA979271A publication Critical patent/CA979271A/en
Expired 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
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
CA165,976A 1972-03-28 1973-03-13 I-shaped duct system Expired CA979271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47031016A JPS4919647A (enrdf_load_stackoverflow) 1972-03-28 1972-03-28

Publications (1)

Publication Number Publication Date
CA979271A true CA979271A (en) 1975-12-09

Family

ID=12319726

Family Applications (1)

Application Number Title Priority Date Filing Date
CA165,976A Expired CA979271A (en) 1972-03-28 1973-03-13 I-shaped duct system

Country Status (3)

Country Link
US (1) US3800686A (enrdf_load_stackoverflow)
JP (1) JPS4919647A (enrdf_load_stackoverflow)
CA (1) CA979271A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189028U (ja) * 1983-06-02 1984-12-14 大下　一義 加圧ダクト
JPS60128251U (ja) * 1984-02-03 1985-08-28 大下　一義 加圧ダクト
DE3705241A1 (de) * 1986-12-24 1988-07-07 Escher Wyss Gmbh Verfahren zur mechanisch-thermischen entwaesserung einer faserstoffbahn
US4927971A (en) * 1988-05-11 1990-05-22 Mitsubishi Paper Mills Ltd. Desensitizer composition
US5246397A (en) * 1991-03-25 1993-09-21 Pentwater Wire Products, Inc. Spacer rack for smoke detecton having separable sections
US5160294A (en) * 1991-03-25 1992-11-03 Pentwater Wire Products, Inc. Spacer rack for smoke detection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US52528A (en) * 1866-02-13 Improved system of ventilating houses
US533454A (en) * 1895-02-05 Heating and ventilating apparatus
US802871A (en) * 1903-03-09 1905-10-24 Frederick V Matton Ventilating device for buildings.
US960921A (en) * 1908-07-10 1910-06-07 David Hill Ventilating apparatus.
US1814979A (en) * 1929-04-18 1931-07-14 Kerr Chickeries Inc Combination chick storage, brooder and incubator
DE1604114B1 (de) * 1965-02-23 1971-12-23 Svenska Flaektfabriken Ab Einrichtung zur aufrechterhaltung einer staub und bakterien freien zone innerhalb eines raumes
US3354946A (en) * 1965-07-30 1967-11-28 Tempmaster Corp Air conditioning system

Also Published As

Publication number Publication date
JPS4919647A (enrdf_load_stackoverflow) 1974-02-21
US3800686A (en) 1974-04-02

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