CA640428A - Pressure helmets, breathing masks or the like - Google Patents

Pressure helmets, breathing masks or the like

Info

Publication number
CA640428A
CA640428A CA640428A CA640428DA CA640428A CA 640428 A CA640428 A CA 640428A CA 640428 A CA640428 A CA 640428A CA 640428D A CA640428D A CA 640428DA CA 640428 A CA640428 A CA 640428A
Authority
CA
Canada
Prior art keywords
helmets
pressure
breathing masks
masks
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
Application number
CA640428A
Inventor
H. Taylor Eric
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
Publication date
Application granted granted Critical
Publication of CA640428A publication Critical patent/CA640428A/en
Expired legal-status Critical Current

Links

CA640428A Pressure helmets, breathing masks or the like Expired CA640428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA640428T

Publications (1)

Publication Number Publication Date
CA640428A true CA640428A (en) 1962-05-01

Family

ID=35918942

Family Applications (1)

Application Number Title Priority Date Filing Date
CA640428A Expired CA640428A (en) Pressure helmets, breathing masks or the like

Country Status (1)

Country Link
CA (1) CA640428A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345642A (en) * 1965-12-09 1967-10-10 Mine Safety Appliances Co Headgear with retractable vertically movable eye shield
US4024587A (en) * 1975-03-03 1977-05-24 Griffin Products Incorporated Helmet conversion kit safety helmet
US4802243A (en) * 1987-10-26 1989-02-07 Griffiths John W Acoustic headgear-sun visor assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345642A (en) * 1965-12-09 1967-10-10 Mine Safety Appliances Co Headgear with retractable vertically movable eye shield
US4024587A (en) * 1975-03-03 1977-05-24 Griffin Products Incorporated Helmet conversion kit safety helmet
US4802243A (en) * 1987-10-26 1989-02-07 Griffiths John W Acoustic headgear-sun visor assembly

Similar Documents

Publication Publication Date Title
CA640428A (en) Pressure helmets, breathing masks or the like
CA636007A (en) Rubber, polyurethane laminates
CA635091A (en) Respiratory masks
CA644944A (en) Pressure door
CA653402A (en) Breathing mask
CA639490A (en) Safety armband
CA640571A (en) Breathing apparatus
AU370466A (en) Improvements relating to sight shields, more particularly for respirator masks or the like
CA673268A (en) Respirator
CA663433A (en) Respiratory masks
CA654793A (en) Safety helmet
CA636882A (en) Pressure regulating valve
CA624465A (en) Positive pressure breathing apparatus
CA657204A (en) Intermittent positive pressure respirator
CA638341A (en) Breathing control valve
CA647370A (en) Antioxygen, particularly for the protection lipids against oxidation
CA648250A (en) 3,5-diketo-pyrazolidines
CA636603A (en) N,n'-diethylene-n''-substituted phosphoramides
AU266543B2 (en) Compressed air gun, for use in air or water
CA648682A (en) Safety valve for pressure cooker
CA624847A (en) Retaining means for helmets and face masks
CA638543A (en) Pressure cooker
AU275667B2 (en) 6b, 19b - oxidoo -3,5 - cyclosteroid compounds and process for preparing the same
CA646564A (en) 11.alpha.,17.alpha.,21-TRIHYDROXY-4-PREGNENE-3,20-DIONE
CA648948A (en) Pressure exchanger plant