GB1445568A - Breathing simulator - Google Patents

Breathing simulator

Info

Publication number
GB1445568A
GB1445568A GB4504972A GB4504972A GB1445568A GB 1445568 A GB1445568 A GB 1445568A GB 4504972 A GB4504972 A GB 4504972A GB 4504972 A GB4504972 A GB 4504972A GB 1445568 A GB1445568 A GB 1445568A
Authority
GB
United Kingdom
Prior art keywords
breathing
cam
cylinder
chamber
representing
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
GB4504972A
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 GB4504972A priority Critical patent/GB1445568A/en
Publication of GB1445568A publication Critical patent/GB1445568A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B27/00—Methods or devices for testing respiratory or breathing apparatus for high altitudes

Landscapes

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

Abstract

1445568 Breathing apparatus DEFENCE SECRETARY OF STATE FOR 19 Dec 1973 [29 Sept 1972] 45049/72 Heading A5T A breathing simulator, particularly in testing breathing equipment comprises a piston I 1 reciprocated in a cylinder 10 by a connecting rod 12 acted on by a double cam follower 13 engaged with a conjugate cam, the latter being driven by a variable speed motor 16 to vary the breathing rate, the cam shape representing a breathing pattern and the outlet pipe 20 representing the human breathing channel. The resistance and inductance components of breathing impedance for simulating mouth breathing are provided by a gauze in a plenum chamber 21 removably attached to the outlet pipe 20. For simulating nose breathing the chamber 21 may be substituted or a further chamber connected thereto. Capacitance is provided by a fixed or variable unswept volume in the cylinder ahead of the piston or by a spring loaded bellows to close the cylinder end. The mask of an oxygen supply apparatus under test is connected to plenum chamber 21, the pressure in chambers 30, 33 being reduced by suction at cocks 34, 35 respectively. Cam 14 may be exchanged for another of a series of differently shaped cams representing different breathing patterns. Connecting rod 12 passes through a seal 32 in a bulkhead 31.
GB4504972A 1972-09-29 1972-09-29 Breathing simulator Expired GB1445568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4504972A GB1445568A (en) 1972-09-29 1972-09-29 Breathing simulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4504972A GB1445568A (en) 1972-09-29 1972-09-29 Breathing simulator

Publications (1)

Publication Number Publication Date
GB1445568A true GB1445568A (en) 1976-08-11

Family

ID=10435694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4504972A Expired GB1445568A (en) 1972-09-29 1972-09-29 Breathing simulator

Country Status (1)

Country Link
GB (1) GB1445568A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455767A1 (en) * 1979-05-02 1980-11-28 Intertechnique Sa Control system for pneumatic plant under variable pressure - has microprocessor-controlled electromagnetically operated vanes to regulate flow of gas to each distribution point
FR2704762A1 (en) * 1993-05-07 1994-11-10 Damico Pierre Portable device for creating respiratory cycles, constituting a respiratory simulator
FR2953191A1 (en) * 2009-11-30 2011-06-03 Comparateur Diving regulator testing device for diver, has compression and depression stops integrated to movable end of reservoir, where stop and compression and depression stops are associated on linear paths and disassociated on rounded paths
CN103632597A (en) * 2013-10-29 2014-03-12 中国人民解放军空军航空医学研究所 Multipath simulation gas suction device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455767A1 (en) * 1979-05-02 1980-11-28 Intertechnique Sa Control system for pneumatic plant under variable pressure - has microprocessor-controlled electromagnetically operated vanes to regulate flow of gas to each distribution point
FR2704762A1 (en) * 1993-05-07 1994-11-10 Damico Pierre Portable device for creating respiratory cycles, constituting a respiratory simulator
FR2953191A1 (en) * 2009-11-30 2011-06-03 Comparateur Diving regulator testing device for diver, has compression and depression stops integrated to movable end of reservoir, where stop and compression and depression stops are associated on linear paths and disassociated on rounded paths
CN103632597A (en) * 2013-10-29 2014-03-12 中国人民解放军空军航空医学研究所 Multipath simulation gas suction device

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee