GB1077791A - Improvements in or relating to respirators - Google Patents

Improvements in or relating to respirators

Info

Publication number
GB1077791A
GB1077791A GB3728862A GB3728862A GB1077791A GB 1077791 A GB1077791 A GB 1077791A GB 3728862 A GB3728862 A GB 3728862A GB 3728862 A GB3728862 A GB 3728862A GB 1077791 A GB1077791 A GB 1077791A
Authority
GB
United Kingdom
Prior art keywords
flap
pad
valve
mask body
rubber
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
GB3728862A
Inventor
Cyril Daniel Watson
Stephen Alfred Douglas Offer
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB3728862A priority Critical patent/GB1077791A/en
Publication of GB1077791A publication Critical patent/GB1077791A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

1,077,791. Respirators. SECRETARY OF STATE FOR DEFENCE. Jan. 2, 1964 [Oct. 2, 1962], No. 37288/62. Heading AST. A respirator comprises a rubber mask body 1 having a rim seal comprising a rubber flap 5 hinged inwardly from the mask body 1 and a detachable foamed rubber strip or pad 6 which is positioned between the flap 5 and mask body 1 such that in use the sealing flap 5 is pressed by the pad 6 against the face of the user. The side of the pad 6 positioned against the flap 5 is convex. The mask is provided with a non return valve system comprising two flap valves 10 and 11 spaced at such a distance that any outside air entering the space 12 between valves 10, 11 as a result of dynamic leakage through the outer valve 10, is unable to reach and pass the inner valve 11 before the inner valve has closed. Air is inhaled through a breathing tube (not shown) having a filter unit, and flap valve 14.
GB3728862A 1962-10-02 1962-10-02 Improvements in or relating to respirators Expired GB1077791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3728862A GB1077791A (en) 1962-10-02 1962-10-02 Improvements in or relating to respirators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3728862A GB1077791A (en) 1962-10-02 1962-10-02 Improvements in or relating to respirators

Publications (1)

Publication Number Publication Date
GB1077791A true GB1077791A (en) 1967-08-02

Family

ID=10395270

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3728862A Expired GB1077791A (en) 1962-10-02 1962-10-02 Improvements in or relating to respirators

Country Status (1)

Country Link
GB (1) GB1077791A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003036A1 (en) * 1986-10-31 1988-05-05 Filcon Corporation Mask
US4951664A (en) * 1988-09-09 1990-08-28 Filcon Corporation Mask and method of manufacture
GB2337465A (en) * 1998-03-10 1999-11-24 Secr Defence Respirator including a detachable face seal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003036A1 (en) * 1986-10-31 1988-05-05 Filcon Corporation Mask
US4951664A (en) * 1988-09-09 1990-08-28 Filcon Corporation Mask and method of manufacture
GB2337465A (en) * 1998-03-10 1999-11-24 Secr Defence Respirator including a detachable face seal

Similar Documents

Publication Publication Date Title
GB1034759A (en) Valve for artificial respiration apparatus
GB957727A (en) Respiratory mask
GB1144317A (en) Improvements relating to airmens' helmets
GB875790A (en) Breathing control valve
GB1473885A (en) Respiratory masks or helmets
GB990870A (en) An improved valve assembly for use with breathing apparatus
GB848215A (en) Improvements in or relating to respiratory masks
GB1100612A (en) Improvements in or relating to bronchial dilators
GB1340925A (en) Breathing apparatus with a breathing apparatus with a breathing mask
GB926500A (en) Head covering assembly with face and visor seals
GB750152A (en) An improved valve for use in controlling human respiration
US3020911A (en) Mask
GB1077791A (en) Improvements in or relating to respirators
GB1215218A (en) A respiratory apparatus mask
GB1006377A (en) Improvements in and relating to butterfly valves
GB1297305A (en)
GB1191793A (en) A Respiratory Mask
GB733890A (en) Improvements in or relating to cuffed catheters
GB967421A (en) Improvements in or relating to breathing apparatus
GB837354A (en) Mask for breathing apparatus
GB1455525A (en) Feeding devices for breathing masks
GB992428A (en) Improvements in or relating to respiratory apparatus for use in closed-circuit respiration
GB1092378A (en) Device for filtering air
GB938649A (en) Combination inhalator-exhalator valve
ES412990A1 (en) Inspiration/expiration valve