GB623690A - Improvements relating to submarine breathing masks - Google Patents

Improvements relating to submarine breathing masks

Info

Publication number
GB623690A
GB623690A GB12940/47A GB1294047A GB623690A GB 623690 A GB623690 A GB 623690A GB 12940/47 A GB12940/47 A GB 12940/47A GB 1294047 A GB1294047 A GB 1294047A GB 623690 A GB623690 A GB 623690A
Authority
GB
United Kingdom
Prior art keywords
tube
shroud
improvements relating
wearer
case
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
GB12940/47A
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
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 Pirelli SpA filed Critical Pirelli SpA
Publication of GB623690A publication Critical patent/GB623690A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/12—Diving masks
    • B63C11/16—Diving masks with air supply by suction from diver, e.g. snorkels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

623,690. Respiratory appliances. PIRELLI SOC. PER AZIONI. May 13, 1947, No. 12940. Convention date, Jan. 25. [Class 81(ii)] A mask, which enables the wearer to have direct access to the atmosphere when at the surface, comprises a front portion I to which is connected a rigid breathing tube 8, the upper end of which carries a shroud 13 which is closed by a float 11 when the wearer dives below the surface. The float slides on the tube 8 and abuts against a fixed collar in its lower position. Either the shroud may have a perforated closure member at its lower end or it may be mounted on the upper end of the tube 8 which, in this case, is perforated, see Figs. 3, 4 (not shown). In either case the lower edge of the shroud is below the open part of the tube.
GB12940/47A 1947-01-25 1947-05-13 Improvements relating to submarine breathing masks Expired GB623690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT623690X 1947-01-25

Publications (1)

Publication Number Publication Date
GB623690A true GB623690A (en) 1949-05-20

Family

ID=11293409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12940/47A Expired GB623690A (en) 1947-01-25 1947-05-13 Improvements relating to submarine breathing masks

Country Status (1)

Country Link
GB (1) GB623690A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148128A (en) * 1983-10-25 1985-05-30 Jang Chin Fa Simple diving device
CN104925240A (en) * 2014-03-20 2015-09-23 贺玉广 Diving device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148128A (en) * 1983-10-25 1985-05-30 Jang Chin Fa Simple diving device
CN104925240A (en) * 2014-03-20 2015-09-23 贺玉广 Diving device

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