[go: up one dir, main page]

AU232999B2 - Improvements in air pressure reducing valves for use in portable underwater breathing apparatus - Google Patents

Improvements in air pressure reducing valves for use in portable underwater breathing apparatus

Info

Publication number
AU232999B2
AU232999B2 AU33373/57A AU3337357A AU232999B2 AU 232999 B2 AU232999 B2 AU 232999B2 AU 33373/57 A AU33373/57 A AU 33373/57A AU 3337357 A AU3337357 A AU 3337357A AU 232999 B2 AU232999 B2 AU 232999B2
Authority
AU
Australia
Prior art keywords
air pressure
pressure reducing
breathing apparatus
reducing valves
underwater breathing
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 - Lifetime
Application number
AU33373/57A
Inventor
Francis Eldred Edward
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.)
Individual
Original Assignee
Individual
Filing date
Publication of AU232999B2 publication Critical patent/AU232999B2/en
Application filed by Individual filed Critical Individual
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU33373/57A 1957-11-28 Improvements in air pressure reducing valves for use in portable underwater breathing apparatus Expired - Lifetime AU232999B2 (en)

Publications (1)

Publication Number Publication Date
AU232999B2 true AU232999B2 (en)

Family

ID=

Similar Documents

Publication Publication Date Title
AU232999B2 (en) Improvements in air pressure reducing valves for use in portable underwater breathing apparatus
AU217618B2 (en) Improvements in or relating to breathing apparatus and pressure control valves therefor
AU217504B2 (en) Improvements in breathing apparatus
AU219786B2 (en) Improvements in breathing apparatus
AU2748157A (en) Improvements in or relating to breathing apparatus and pressure control valves therefor
AU229079B2 (en) Improvements in breathing apparatus
CA542776A (en) Breathing apparatus slide valve
AU1800156A (en) Improvements in breathing apparatus
AU2347656A (en) Improvements in breathing apparatus
CA568497A (en) Gas producing apparatus and two-way valve therefor
AU3815958A (en) Improvements in breathing apparatus
CA542777A (en) Breathing apparatus dump valve
AU218124B2 (en) Improvements in oxygen regulator fora breathing apparatus
AU233490B2 (en) Improvements in or relating to portable apparatus for testing variable pressure systems
AU240852B2 (en) Improvements in masks for training in rescue breathing
FR1235501A (en) Improvement in devices for scuba diving
AU217280B2 (en) Improvements in or relating to manually operated valves for flexible pipes
AU2867657A (en) Improvements in oxygen regulator fora breathing apparatus
CA570899A (en) Relief valve for pressure measuring apparatus
AU4661059A (en) Improvements in or relating to portable apparatus for testing variable pressure systems
AU5613059A (en) Improvements in masks for training in rescue breathing
AU240149B2 (en) Breathing apparatus for divers
AU227017B2 (en) Improvements in and relating to control apparatus for fluid pressure operated devices
CA569288A (en) Underwater breathing apparatus
CA585237A (en) Underwater breathing apparatus