EP0492984A1 - Casque de protection - Google Patents
Casque de protection Download PDFInfo
- Publication number
- EP0492984A1 EP0492984A1 EP91311796A EP91311796A EP0492984A1 EP 0492984 A1 EP0492984 A1 EP 0492984A1 EP 91311796 A EP91311796 A EP 91311796A EP 91311796 A EP91311796 A EP 91311796A EP 0492984 A1 EP0492984 A1 EP 0492984A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- visor
- helmet according
- helmet
- air
- 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.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/28—Ventilating arrangements
- A42B3/286—Ventilating arrangements with forced flow, e.g. by a fan
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/16—Ear protection devices
- A42B3/166—Integral hearing protection
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/18—Face protection devices
- A42B3/22—Visors
- A42B3/225—Visors with full face protection, e.g. for industrial safety applications
-
- 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
Definitions
- This invention concerns improvements in or relating to protective helmets for use by operatives in industrial environments.
- the invention has reference to such helmets for use in the mining or quarrying industries wherein the need for protective headwear is especially acute. Protection is required not only to prevent physical injury but also to avoid and indeed minimise damage to the respiratory organs, to the aural, ocular and olfactory senses.
- Protective helmets in the form of powered helmet respirators are already known and generally include a protective shell within which is provided means for introducing a filtered air supply between the wearer's face and a visor which may assume a fixed disposition on the shell or may be pivotally mounted outside the shell to allow movement into and out of an operable, ie protective, position in front of a wearer's face.
- a protective helmet including a protective shell for accommodating a wearer's head, a visor at the front part of the shell and retractable therewithin, the shell being provided with an ear defender at each side thereof, each ear defender being substantially within the profile of the shell, an air duct defined within the shell and having an inlet towards the rear part of the shell and a number of outlets associated with the front part of the shell and directed on to the internal surface of the visor and at least some of its marginal edges which in use extend adjacent the wearer's face, a filter associated with the duct, and an air mover for introducing air to the duct.
- the air duct extends from the occipital region to terminate at the front part of the shell in the or each outlet which in use supplies air to the top part of the visor when in its operational extended position in front of a wearer's face, such that the interior of the visor is swept with air.
- a plurality of outlets for the air duct the outlets being directed such as in use to sweep the interior of the visor with air and to target the marginal edges of the visor lying adjacent the wearer's face thereby to provide a pneumatic seal therearound to minimise the ingress of injurious atmospheric pollutants.
- An inner protective skin is disposed within the shell in spaced relation thereto, the skin conveniently defining the duct between it and the internal surface of the shell. retractable.
- the air duct extends over a substantial part of its length between the shell and the inner skin, the inner skin being bifurcated at the front part of the shell to provide both the number of outlets and the space for visor retraction.
- the shell may be formed to give at its rear part an outer wall and at its front part an inner wall, the front part being provided with a cover to define a channel within which the visor may retract.
- the cover in such an embodiment is so formed as to give the helmet a continuous or substantially continuous outer profile.
- the cover may for convenience be removable and replaceable, suitable fixtures being provided for that purpose.
- the filter may conveniently extend across the inlet to the duct, and the air mover may be disposed within the duct in rearwards of the crown of the shell.
- the air mover is constituted by at least one fan, preferably battery powered.
- the visor may be removably mounted in a carrier having a renewable transparent section constituting the visor per se.
- the carrier may comprise a frame into which a renewable transparent section may be insertable.
- the visor carrier may be slidably mounted to the interior of the shell by means of side supports each having slots with which bushes on the carrier engage to afford in use and arcuate sliding motion for the visor into and out of an operative position in front of the wearer's face.
- Each ear defender may conveniently be provided substantially within the profile of the helmet thereby to secure that there are no protuberances which in use could constitute a source of danger by snagging.
- the front part of the shell may be peaked and be provided with protective side cheeks which in use complement the visor and the ear defenders to provide continuity around the wearer's face.
- the side cheeks form a proximity seal between the visor frame and the wearer's face, thus providing enhanced protection from side draughts of contaminated air.
- the front part of the shell may be provided with a mount for a lamp such as is used in underground mining, the lamp being battery powered.
- the cover would be provided with the mount at the front of the helmet.
- the removable cover provides a degree of versatility whereby different fitments thereto can be provided on a range of covers.
- a protective helmet in the form of a powered helmet respirator in position on a wearer's head 3, the respirator comprising a protective shell 2 having a rear part 4, a crown 6, a front part 8 and sides 10.
- a head harness (not shown) is provided within the shell 2 for comfortably seating the respirator on the wearer's head 3.
- An inner skin 12 extends from the rear part 4 to the front part 8 and defines in the occipital region an air inlet 14 across which there is provided a filter 16 of suitable fibrous material.
- the filter 16 is clipped into a holder 13 and can thus be easily dismountable and replaceable.
- a further inner skin which comprises parts of the shell 4, 6, 8 extends through 4, 6 and downwards through 8 terminating in a plurality of outlets 20 in the form of slots.
- An air duct 22 is thus defined within the shell 2 between its inner surface and the skins 12 and 4, 6 and 8.
- a front cover 9 is fixed to the shell 2 to provide a smooth profile to the helmet exterior and with the front part of the protective shell 8, provides a space 42 into which the visor 30 may retract.
- An air mover in the form of two battery-powered fans 24 is located within the duct 22 on sound-absorbing mounts 26 rearwards of the crown 6 of the shell 2.
- the power for the fans 24 is conveniently provided by a body mounted battery pack (not shown) which is of such capacity as additionally to power a lamp (not shown) releasably fixable to the front part 9 on a bracket 29 provided for that purpose ( Figure 1).
- a visor 30 comprising a carrier 32 which is releasably fixed to a transparent window 34 is slidably and pivotally mounted on supports 38 fixed to the sides of the helmet shell 2, with bushes 39 attached to the visor carrier 32.
- the supports 38 have curved slots within which the bushes are adapted to slide.
- the visor 30 is retractable within a space 42 defined between part 8 of the shell 2 and the inside wall of the outer cover 9.
- the visor 30 has a stop for abutting a cut-off switch (not shown) such that when the visor is fully extended in front of the wearer's face, the power to the fan 24 is initiated. Additionally, in this position, the visor is sealed against the inner face of the outer cover 9 by a sealing strip 21.
- the visor may alternatively seal against the outer face of the shell 8 along its lower edge.
- a limited pivoting motion about the lower bush 39 may be provided to enable the lower part of the visor to move closer to the wearer's face, and is achieved by a small recess in the slot in the support 38 into which the upper bush may move.
- the visor 30 in conjunction with cheek plates 52 and ear defenders 60, to be described later, on the sides 10 of the shell 2 gives panoramic protection for the front and sides of the wearer's face.
- the visor 30 may be provided with a range of proximity seals (not shown) to reduce the distance between the visor margins and the wearer's face for the purpose of further minimising the ingress of contaminated air into the wearer's breathing zone.
- FIG. 1 there is shown on one side of the powered helmet respirator 1 an ear defender 60 which is secured to the shell 2.
- a corresponding ear defender (not shown) is provided on the other side of the shell.
- the ear defender 60 conforms to the general profile of the helmet 1, and is secured to the shell 10 so that the inner face of the ear defender sits relatively close to the wearer's ears.
- the ear defender 60 When in its correct position, the ear defender 60 is close to but not in contact with the wearer's head. In this position, noise attenuation is not achieved.
- an inner portion (not shown) of the ear defender 60 is caused to move inwards to contact the wearer's ear, or the region therearound, by a mechanism (not shown) akin to a piston moving within a cylinder.
- the mechanism is resiliently loaded when in its operative position to provide correct pressure against the wearer's head.
- the helmet 1 fits snugly and comfortably on the wearer's head 3 initially with the visor 30 in its retracted position within the space 42, the fans 24 being stationary. Downward movement of the visor 30 brings it into its operative position as shown in Figure 1. At the same time release of the cut-off switch (not shown) allows power to be restored to the fans 24 which accordingly induce an air flow through the inlet 14 and the filter 16 into the duct 22 and thence to the outlets 20 whence it travels downwards between the visor 34 and the face of the wearer to ventilate same with filtered air and to provide cooling.
- the cut-off switch (not shown) allows power to be restored to the fans 24 which accordingly induce an air flow through the inlet 14 and the filter 16 into the duct 22 and thence to the outlets 20 whence it travels downwards between the visor 34 and the face of the wearer to ventilate same with filtered air and to provide cooling.
- the ear defenders 60 are within the general profile of the shell 2 of the helmet 1, and present no projection likely to be a hazard. Operation of a fully integrated and custom designed helmet according to the present invention in which the ear defenders are within the profile of the shell enables noise attenuation to be achieved effectively.
- the present invention thus provides a comprehensive and versatile powered helmet respirator possessing an optimum of protective features whilst being less cumbersome and less weighty than its antecedents. Equally, replacement of the filter and of the visor window are facilitated thus reducing cost and time spent in repair.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Pulmonology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Helmets And Other Head Coverings (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9027677 | 1990-12-20 | ||
GB909027677A GB9027677D0 (en) | 1990-12-20 | 1990-12-20 | Improvements in or relating to powered helmet respirators |
CA002072063A CA2072063A1 (fr) | 1990-12-20 | 1992-06-23 | Ameliorations apportees ou en relations avec des casques protecteurs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0492984A1 true EP0492984A1 (fr) | 1992-07-01 |
EP0492984B1 EP0492984B1 (fr) | 1997-05-14 |
Family
ID=25675259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91311796A Expired - Lifetime EP0492984B1 (fr) | 1990-12-20 | 1991-12-19 | Casque de protection |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0492984B1 (fr) |
AU (1) | AU657503B2 (fr) |
CA (1) | CA2072063A1 (fr) |
DE (1) | DE69126112T2 (fr) |
ES (1) | ES2101729T3 (fr) |
GB (2) | GB9027677D0 (fr) |
SE (1) | SE501653C2 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994003235A1 (fr) * | 1992-07-31 | 1994-02-17 | Mine Safety Appliances Company Limited | Appareil respiratoire pour casque |
GB2316324A (en) * | 1996-08-21 | 1998-02-25 | Univ Brunel | Air filtration system for a helmet |
CN100358448C (zh) * | 2003-07-11 | 2008-01-02 | 中国人民解放军总装备部防化军事代表局 | 正压式防护头罩 |
WO2019025693A1 (fr) * | 2017-08-03 | 2019-02-07 | Commissariat à l'énergie atomique et aux énergies alternatives | Casque d'assainissement d'air pour usage dynamique |
WO2020251372A1 (fr) * | 2019-06-14 | 2020-12-17 | Peakvent As | Dispositif de purification d'air portable monté sur la tête comprenant un filtre rotatif motorisé |
CN113453766A (zh) * | 2019-04-04 | 2021-09-28 | 喜利得股份公司 | 用于在使用者的面部前方产生空气幕的装置 |
WO2022115961A1 (fr) * | 2020-12-03 | 2022-06-09 | Robert Ranson | Dispositif d'extension de recouvrement de crâne pour écran facial |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9516265D0 (en) * | 1995-08-08 | 1995-10-11 | Rovira John S | Headgear |
FI981394A (fi) * | 1998-06-16 | 1999-12-17 | Kemira Safety Oy | Suojainkypärä |
US7937775B2 (en) | 2005-08-09 | 2011-05-10 | Microtek Medical, Inc. | Surgical protective head gear assembly including high volume air delivery system |
KR20180070630A (ko) | 2015-10-15 | 2018-06-26 | 클리어 에어 테크놀로지 리미티드 | 호흡기 |
WO2021050916A1 (fr) | 2019-09-12 | 2021-03-18 | O2-O2, Inc. | Dispositifs respiratoires avec mécanismes de commande de source et systèmes et procédés associés |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3178723A (en) * | 1963-05-24 | 1965-04-20 | Leonard P Frieder | Sound attenuating device and supporting means in a helmet |
US3223086A (en) * | 1963-08-05 | 1965-12-14 | Arthur R Adams | Air-conditioned helmet |
US3310811A (en) * | 1964-04-07 | 1967-03-28 | Jr Vincent D Iacono | Helmet enclosure |
US3906547A (en) * | 1974-09-26 | 1975-09-23 | Gentex Corp | Headset retainer for helmet |
GB2014036A (en) * | 1978-02-10 | 1979-08-22 | Canadian Patents Dev | Safety helmet for miners |
GB2063074A (en) * | 1979-10-30 | 1981-06-03 | Martindale Protection Ltd | Protective respiratory helmet |
WO1981002514A1 (fr) * | 1980-03-07 | 1981-09-17 | Minnesota Mining & Mfg | Respirateur d'air a ventilation mecanique |
DE3220691A1 (de) * | 1982-06-02 | 1983-12-08 | HABRA elektronik Gesellschaft mbH, 8000 München | Sturzhelm, insbesondere fuer motorradfahrer |
FR2629986A1 (fr) * | 1988-04-19 | 1989-10-20 | Electricite De France | Casque de protection polyvalent |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1005188A (en) * | 1961-03-14 | 1965-09-22 | Ml Aviation Co Ltd | Improvements relating to flying helmets |
GB1005187A (en) * | 1961-03-14 | 1965-09-22 | Ml Aviation Co Ltd | Improvements relating to flying helmets |
US3736927A (en) * | 1971-05-17 | 1973-06-05 | F Misaqi | Self-contained air purifier and conditioner unit |
GB1495020A (en) * | 1974-01-16 | 1977-12-14 | Nat Res Dev | Respirators |
GB2061696B (en) * | 1979-10-30 | 1984-05-16 | Martindale Protection Ltd | Protective respiratory helmet |
-
1990
- 1990-12-20 GB GB909027677A patent/GB9027677D0/en active Pending
-
1991
- 1991-12-19 GB GB9127008A patent/GB2251173B/en not_active Expired - Fee Related
- 1991-12-19 EP EP91311796A patent/EP0492984B1/fr not_active Expired - Lifetime
- 1991-12-19 AU AU89935/91A patent/AU657503B2/en not_active Ceased
- 1991-12-19 DE DE69126112T patent/DE69126112T2/de not_active Expired - Fee Related
- 1991-12-19 ES ES91311796T patent/ES2101729T3/es not_active Expired - Lifetime
-
1992
- 1992-06-23 CA CA002072063A patent/CA2072063A1/fr not_active Abandoned
- 1992-06-29 SE SE9201996A patent/SE501653C2/sv not_active IP Right Cessation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3178723A (en) * | 1963-05-24 | 1965-04-20 | Leonard P Frieder | Sound attenuating device and supporting means in a helmet |
US3223086A (en) * | 1963-08-05 | 1965-12-14 | Arthur R Adams | Air-conditioned helmet |
US3310811A (en) * | 1964-04-07 | 1967-03-28 | Jr Vincent D Iacono | Helmet enclosure |
US3906547A (en) * | 1974-09-26 | 1975-09-23 | Gentex Corp | Headset retainer for helmet |
GB2014036A (en) * | 1978-02-10 | 1979-08-22 | Canadian Patents Dev | Safety helmet for miners |
GB2063074A (en) * | 1979-10-30 | 1981-06-03 | Martindale Protection Ltd | Protective respiratory helmet |
WO1981002514A1 (fr) * | 1980-03-07 | 1981-09-17 | Minnesota Mining & Mfg | Respirateur d'air a ventilation mecanique |
DE3220691A1 (de) * | 1982-06-02 | 1983-12-08 | HABRA elektronik Gesellschaft mbH, 8000 München | Sturzhelm, insbesondere fuer motorradfahrer |
FR2629986A1 (fr) * | 1988-04-19 | 1989-10-20 | Electricite De France | Casque de protection polyvalent |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994003235A1 (fr) * | 1992-07-31 | 1994-02-17 | Mine Safety Appliances Company Limited | Appareil respiratoire pour casque |
AU668584B2 (en) * | 1992-07-31 | 1996-05-09 | Mine Safety Appliances Company Limited | Helmet respirator apparatus |
GB2316324A (en) * | 1996-08-21 | 1998-02-25 | Univ Brunel | Air filtration system for a helmet |
GB2316324B (en) * | 1996-08-21 | 2000-05-03 | Univ Brunel | Air filtration system |
CN100358448C (zh) * | 2003-07-11 | 2008-01-02 | 中国人民解放军总装备部防化军事代表局 | 正压式防护头罩 |
WO2019025693A1 (fr) * | 2017-08-03 | 2019-02-07 | Commissariat à l'énergie atomique et aux énergies alternatives | Casque d'assainissement d'air pour usage dynamique |
FR3069759A1 (fr) * | 2017-08-03 | 2019-02-08 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Casque d'assainissement d'air pour usage dynamique |
CN113453766A (zh) * | 2019-04-04 | 2021-09-28 | 喜利得股份公司 | 用于在使用者的面部前方产生空气幕的装置 |
CN113453766B (zh) * | 2019-04-04 | 2022-08-23 | 喜利得股份公司 | 用于在使用者的面部前方产生空气幕的装置 |
WO2020251372A1 (fr) * | 2019-06-14 | 2020-12-17 | Peakvent As | Dispositif de purification d'air portable monté sur la tête comprenant un filtre rotatif motorisé |
WO2022115961A1 (fr) * | 2020-12-03 | 2022-06-09 | Robert Ranson | Dispositif d'extension de recouvrement de crâne pour écran facial |
Also Published As
Publication number | Publication date |
---|---|
CA2072063A1 (fr) | 1993-12-24 |
SE9201996L (sv) | 1993-12-30 |
EP0492984B1 (fr) | 1997-05-14 |
GB9127008D0 (en) | 1992-02-19 |
GB2251173A (en) | 1992-07-01 |
AU657503B2 (en) | 1995-03-16 |
SE9201996D0 (sv) | 1992-06-29 |
DE69126112D1 (de) | 1997-06-19 |
ES2101729T3 (es) | 1997-07-16 |
GB2251173B (en) | 1995-06-14 |
SE501653C2 (sv) | 1995-04-10 |
AU8993591A (en) | 1992-06-25 |
DE69126112T2 (de) | 1997-10-02 |
GB9027677D0 (en) | 1991-02-13 |
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