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1. WO1994003235 - HELMET RESPIRATOR APPARATUS

Publication Number WO/1994/003235
Publication Date 17.02.1994
International Application No. PCT/GB1993/001616
International Filing Date 30.07.1993
Chapter 2 Demand Filed 01.02.1994
IPC
A42B 3/22 2006.01
AHUMAN NECESSITIES
42HEADWEAR
BHATS; HEAD COVERINGS
3Helmets; Helmet covers
04Parts, details or accessories of helmets
18Face protection devices
22Visors
A42B 3/28 2006.01
AHUMAN NECESSITIES
42HEADWEAR
BHATS; HEAD COVERINGS
3Helmets; Helmet covers
04Parts, details or accessories of helmets
28Ventilating arrangements
A62B 18/04 2006.01
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
18Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes
04Gas helmets
CPC
A42B 3/225
AHUMAN NECESSITIES
42HEADWEAR
BHATS; HEAD COVERINGS
3Helmets; Helmet covers ; ; Other protective head coverings;
04Parts, details or accessories of helmets
18Face protection devices
22Visors
225with full face protection, e.g. for industrial safety applications
A42B 3/286
AHUMAN NECESSITIES
42HEADWEAR
BHATS; HEAD COVERINGS
3Helmets; Helmet covers ; ; Other protective head coverings;
04Parts, details or accessories of helmets
28Ventilating arrangements
286with forced flow, e.g. by a fan
A62B 18/045
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
18Breathing 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
04Gas helmets
045with fans for delivering air for breathing mounted in or on the helmet
Applicants
  • MINE SAFETY APPLIANCES COMPANY LIMITED [GB]/[GB] (AllExceptUS)
  • MURPHY, Terence, Walter, Daniel, Respair [GB]/[GB] (UsOnly)
Inventors
  • MURPHY, Terence, Walter, Daniel, Respair
Agents
  • McCALLUM, William, Potter
Priority Data
9216316.131.07.1992GB
9303666.305.04.1993GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HELMET RESPIRATOR APPARATUS
(FR) APPAREIL RESPIRATOIRE POUR CASQUE
Abstract
(EN)
Respirator apparatus (10) comprises a monocoque helmet (11), with a visor (14), which is pivotal between an inoperative raised position and an operative lowered position. The helmet (11) is formed of outer shells (17, 18) joined together along the rim and at strategic locations within the domed area of the helmet but are selectively spaced apart in various regions to provide an air chamber (19), at the rear of the helmet (11) and an air chamber (20) at the forward part of the helmet. These chambers (19, 20) are interconnected by three ducts (21, 22, 23). The chamber (19), opens through the outer shell and is fitted with an air filter (25), to receive incoming air. The chamber (20) opens through the inner shell (17) and is fitted with a fan (26) to propel air through the ducts (21, 22, 23) into a breathing zone formed behind the visor (14). The rear portion of the helmet is provided with a chamber (29) which is isolated from the ducts (21, 22, 23) and which accommodates batteries for energising the fan (26). The visor (14) may be arranged to activate the fan automatically when it is moved to its lowered position.
(FR)
Un appareil respiratoire (10) comprend un casque monocoque (11) pourvu d'une visière (14) qui pivote entre une position relevée à l'état de repos et une position fonctionnelle abaissée. Le casque (11) est formé de coquilles externes (17, 18) réunies le long d'un rebord et à des endroits stratégiques à l'intérieur de la zone bombée du casque, mais sont sélectivement écartées dans diverses régions pour former une chambre d'air (19), à l'arrière du casque (11) et une chambre d'air (20) dans la partie avant du casque. Ces chambres (19, 20) sont interconnectées par trois passages (21, 22, 23). La chambre (19) s'ouvre par la coquille externe et est équipée d'un filtre à air (25) destiné à recevoir l'air. La chambre (20) s'ouvre par la coquille interne (17) et est équipée d'un ventilateur (26) destiné à propulser l'air par les passages (21, 22, 23) dans une zone de respiration formée derrière la visière (14). La partie arrière du casque est pourvue d'une chambre (29) qui est isolée des passages (21, 22, 23) et qui contient des piles destinées à alimenter le ventilateur (26). La visière (14) peut être conçue pour actionner automatiquement le ventilateur lorsqu'on la met en position abaissée.
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