GB2252048B - Powered respirators - Google Patents

Powered respirators

Info

Publication number
GB2252048B
GB2252048B GB9204837A GB9204837A GB2252048B GB 2252048 B GB2252048 B GB 2252048B GB 9204837 A GB9204837 A GB 9204837A GB 9204837 A GB9204837 A GB 9204837A GB 2252048 B GB2252048 B GB 2252048B
Authority
GB
United Kingdom
Prior art keywords
powered respirators
respirators
powered
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 - Fee Related
Application number
GB9204837A
Other versions
GB9204837D0 (en
GB2252048A (en
Inventor
David Brian Edwards
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.)
Racal Safety Ltd
Racal Health and Safety Ltd
Original Assignee
Racal Safety Ltd
Racal Health and Safety 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
Priority claimed from GB888815179A external-priority patent/GB8815179D0/en
Application filed by Racal Safety Ltd, Racal Health and Safety Ltd filed Critical Racal Safety Ltd
Priority to GB9204837A priority Critical patent/GB2252048B/en
Publication of GB9204837D0 publication Critical patent/GB9204837D0/en
Publication of GB2252048A publication Critical patent/GB2252048A/en
Application granted granted Critical
Publication of GB2252048B publication Critical patent/GB2252048B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means
    • G01L9/0077—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light
    • 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
    • A62B18/04—Gas helmets
    • A62B18/045—Gas helmets with fans for delivering air for breathing mounted in or on the helmet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
GB9204837A 1988-06-25 1992-03-06 Powered respirators Expired - Fee Related GB2252048B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9204837A GB2252048B (en) 1988-06-25 1992-03-06 Powered respirators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888815179A GB8815179D0 (en) 1988-06-25 1988-06-25 Differential pressure sensor
GB9204837A GB2252048B (en) 1988-06-25 1992-03-06 Powered respirators

Publications (3)

Publication Number Publication Date
GB9204837D0 GB9204837D0 (en) 1992-04-22
GB2252048A GB2252048A (en) 1992-07-29
GB2252048B true GB2252048B (en) 1992-10-14

Family

ID=26294082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9204837A Expired - Fee Related GB2252048B (en) 1988-06-25 1992-03-06 Powered respirators

Country Status (1)

Country Link
GB (1) GB2252048B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11910864B2 (en) 2020-05-01 2024-02-27 Rockwell Collins, Inc. LED information cueing apparatus for spacesuit helmet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022074426A1 (en) * 2020-10-06 2022-04-14 Кирилл КУЛАКОВСКИЙ Personal air filtration system
GB2612608B (en) * 2021-11-04 2024-06-05 Dyson Technology Ltd Wearable air purifier

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215216A (en) * 1988-03-01 1989-09-20 Sabre Safety Ltd Positive pressure breathing apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215216A (en) * 1988-03-01 1989-09-20 Sabre Safety Ltd Positive pressure breathing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11910864B2 (en) 2020-05-01 2024-02-27 Rockwell Collins, Inc. LED information cueing apparatus for spacesuit helmet

Also Published As

Publication number Publication date
GB9204837D0 (en) 1992-04-22
GB2252048A (en) 1992-07-29

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070621