CA2130743A1 - Diver's helmet assembly having a removable valve to fit a conventional breathing apparatus mouthpiece - Google Patents
Diver's helmet assembly having a removable valve to fit a conventional breathing apparatus mouthpieceInfo
- Publication number
- CA2130743A1 CA2130743A1 CA 2130743 CA2130743A CA2130743A1 CA 2130743 A1 CA2130743 A1 CA 2130743A1 CA 2130743 CA2130743 CA 2130743 CA 2130743 A CA2130743 A CA 2130743A CA 2130743 A1 CA2130743 A1 CA 2130743A1
- Authority
- CA
- Canada
- Prior art keywords
- helmet
- valve
- air supply
- housing
- bushing
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/04—Resilient suits
- B63C11/06—Resilient suits with rigid helmet
Abstract
A helmet assembly includes a helmet body having a valve adapted to receive a conventional breathing apparatus mouthpiece. The valve allows flow of air into the helmet when a mouthriece of a conventional air supply is connected thereto and prevents the flow of water into the helmet when the mouthpiece is disconnected.
Description
2~307~3 Field of the Invention The present invention relates to a diver's helmet ~csemhly and is particularly concerned with a diver's helmet assembly having a removable valve adapted to fit a mouthpiece of a conventional air supply.
5 Backqround of the Invention In diving excursions there are instances where the diver's oxygen tank becom~s depleted or an umbilical line of the helmet ~csemhly is damaged, putting the diver in great danger, whereby he must rely on his companions for oxygen supply.
In such instances, usually the diver will release his helmet so that he can accept his rescuer's mouthpiece for oxygen supply. However, at great depth it is not safe to release the helmet due to the high pressure which can cause serious injuries and even death.
Therefore a helmet ~cspmhly having means to receive a 15 mouthpiece of a conventional air supply is desirable.
Further, in a conventional helmet ~ss~mhly the mouthpiece acts as a seal to the mouth opening of the helmet and thus, upon removal thereof water will leak into the interior of the helmet. This makes it impractical for a diver to share his oxygen supply.
Thus a helmet ASspmhly having means for allowing flow of air into the helmet when a mouthpiece of an air supply is connected thereto but preventing flow of water into the helmet when the mouthpiece is disconnected is also desirable.
5 Summary of the Invention It is an object of the present invention to provide a diver's helmet A.csPmhly having a L~ -o~able valve which allows flow of air into the helmet when an air supply is connected thereto and which prevents flow of water into the helmet when the air supply is disconnected.
It is a further object of the present invention to provide a valve which can be fitted into a helmet with a mouth opening, for the same purpose.
In accordance with one aspect of the present invention there is provided a valve for fitting into a diver's helmet and arranged normally 15 to allow flow of air into the helmet when an air supply is connected thereto and to prevent flow of water into the helmet when the supply is disconnPcted, comprising: a bushing arrangement to be fixed in leakproof mAnner in an opening into the helmet; a housing S1;~Ah1Y mounted in the bushing and fluid-tight therewith, the housing having an air supply 20 passage therethrough and having an outer end adapted for fluid-tight engagement with the mouthpiece of the air supply; valve means movable with the housing and capable of sealing the passage when the housing is in extended position relative to the bushing; spring means urging the housing outwardly to close the valve means, and retaining means carried by the bushing and engageable with the air supply; and being arranged so that when engaged with the air supply the housing is forced inwardly against the spring means to hold open the valve means, the valve means 5 closing automaffcally under action of the spring means when the air supply is lel,loved from the housing.
Preferably the le~ai--i--g means is an atta~ hmpnt clip pivotably hinged to the bushing arrangement at one end and movable thereto between a first posiffon in which the free end thereof is coupled with the 10 mouthpiece of the air supply as to cause locking of the mouthpiece to the valve and a second posiffon in which the mouthpiece can be disco~nected from the valve.
In accordance with another aspect of the present invenffon there is provided a helmet ~csemhly comprising: a helmet body for 15 placemPnt on the head of a user thereof and having a mouth opening; and a valve for fitting into the mouth opening and arranged normally to allow flow of air into the helmet when an air supply is connPcted thereto and to prevent flow of water into the helmet when the supply is disconnected, including a bushing arrangement to be fixed in leakproof m~nn~r in the 20 mouth opening of the helmet; a housing c~ hly mounted in said bushing and fluid-ffght therewith, the housing having an air supply passage therethrough and having an outer end adapted for fluid-tight engagement with the mouthpiece of the air supply; valve means movable with the housing and capable of sealing the passage when the housing is in 25 extended position relaffve to the bushing; spring means urging the 213~7~3 housing outwardly to close the valve means, and retaining means carried by the bushing and engageable with the air supply; and being arranged so that when engaged with the air supply the housing is forced inwardly against the spring means to hold open the valve means, the valve means 5 closing automatically under action of the spring means when the air supply is removed from the housing.
Conveniently the mouth opening of the helmet is located on the visor so as to be in the user's field of view. This will allow the user to connect and ~ co~nect the mouthpiece of the air supply with ease.
Preferably the helmet body includes a water intake valve for allowing a small amount of water to enter the helmet body upon opening thereof. This is mostly convenient for cle~ning the visor of the helmet when misted-up. The helmet body may also include a purge valve to drain the water out.
15 Brief Description of the Drawinqs An embodiment of the present invention will now be described by way of example with lefeLence to the accomr~nying drawings, in which:
Figure 1: in a perspective view, illustrates a diver's helmet ~cspmhly 20 having a le-llo~,able valve to fit a mouthpiece of a conventional air supply.
21307~3 Figure 2: in a perspective view, illustrates the L~-,lovable valve of the helmet AcsPmhly of Figure 1.
Figure 3: in an exploded view, illustrates the L~."ovable valve of Figure 2.
5 Figure 4: in cross-sectional view along line 4-4 of Figure 2, illustrates the removable valve of Figure 2 into condition when the mouthpiece of the air supply is Le",oved.
Figure 5: in a perspective view, illustrates a diver's helmet A-CsPmhly of Figure 1 wherein the interior of the helmet is shown.
10 Figure 6: in a cross-sectional view along lines 6-6 of Figure 1, illustrates the water intake valve of the diver's helmet Acsemhly of Figure 1.
Figure 7: in an exploded view, illu:jlLdtes the water intake valve of the diver's helmet ACSpmhly of Figure 1.
.~imilAr Lefele--ces are used in ~liff~Lellt figures to denote similar components.
Detailed Description Referring to Figures 1 to 7 there is illustrated a diver's helmet apparatus in accordance with an embodiment of the present invention.
Generally, the helmet assembly 10 includes a helmet body 12 5 for placPment over the head of a user and a separate valve 14 for fitting into a diver's helmet and arranged normally to allow flow of air into the helmet when the mouthpiece 16 of an air supply (not shown) is connected thereto and to prevent flow of water into the helmet when the mouthpiece 16 is disconnected. More specifically, the valve 14 fits into the mouth 10 opening 18 located on the visor 20 of the diver's helmet. The location of the mouth opening 18, is such that it is in the diver's field of vision and thus allowing the valve 14, once fitted into the mouth opening 18, to also be in the diver's field of vision. This permits the diver to see the valve 14 as he clips the mouthpiece 16 thereon whereas in conventional helmets 15 the mouthpiece is usually around the chin's area, which would not be convenient for the above situation.
As seen in Figures 2 to 4, the valve 14 includes a housing 22.
The housing 22 includes cylindrical portion A and frusto-conic~l portion B, whereby portion B is tapered to tightly fit into the mouthpiece 16. The 20 valve 14 further includes a bushing 24 which cl~ hly receives portion A
of housing 22 and to which is attached an atta~hm~nt clip 26 having means capable of lying in a plane transverse to the axis of the bushing 24 and adapted for securing the mouthpiece 16 on the tapered end of valve 14.
The att~hm~nt clip 26 is pivotably hinged to the bushing 24 at one end 21307~3 and movable thereto between a first position in which the att~hment clip 26 lies in a plane transverse to the axis of the bushing 24 with its free end coupled to the mouthpiece 16 so as to cause locking of the mouthpiece 16 to the valve 14 in air-tight relaffonship (Figures 1 and 5) and a second 5 position in which the attarhment clip 26 is pivoted downwardly with respect to the longitudinal axis of the valve 14 for disco~necting the mouthpiece 16.
Valve 14 further includes an air intake ring 28, a retaining pin 30, a compression spring 32, an att~rhmPnt ring 34 and a sealing cap 36.
10 Ring 28 is secured by screw threads into the inner end of housing 22.
The retaining pin 30 is threadedly connected to the air intake ring 28 at one end and to the sealing cap 36 at the opposite end thereof. The att~rhmPnt ring 34 serves to hold the bushing 24 in place. As shown in Figure 4, compression spring 32 can act on the bushing 24 and the 15 housing 22, urging the housing 22 outwardly and thus pulling sealing cap 36 downwardly to seal the air supply passage 38 of the bushing 24 in a fluid-tight m~nner so as to close the valve 14. However when the mouthpiece 16 is connpcted to the valve 14, the housing 22 is forced inwardly and the compression spring 32 compresses to hold open the valve 20 14.
Also, to prevent fluid leakage, O-rings 40a, 40b and 40c are included on the valve 14.
The helmet body 12 includes a visor 20 having compression clips 42a and 42b and hinge 44. The visor 20 may be opened by snapping 21~07~3 the compression clips 42a and 42b off and pivoting the visor 20 upward.
The visor 20 also includes sealing means ( not shown ) around the periphery thereof so as to provide a tight seal against the helmet body 12 when it is in a closed position.
At the top of the helmet body 12 is provided a water intake valve 46. This water intake valve 46 is particularly useful when the visor 20 of the helmet body 12 is misted-up. When pressed open, the water intake valve 46 will allow a small amount of water to enter the helmet body 12 so as to clean the visor 20. Water trapped in the helmet body 12 can subsequently be evacuated through the purge valve 48 located at the bottom of helmet body 12.
In Figures 6 and 7, the water intake valve 46 includes a bottom cap 50 having a water slit 52 therein, a flat O-ring 53, a conicAl spring 54, a pressure button 56, a round O-ring 57 and an end cap 58. The end cap 58 has an opening therein for receiving the pressure button 56 which is biased to a closed position by the conicAl spring 54. In this closed position the pressure button 56 provides a tight seal against the end cap 58 and prevents water from entering the helmet body 12. However upon depression of the pressure button 56 the seal is broken to allow water to leak in the helmet body 12.
The interior of the helmet body 12 is provided with padding means 60 for head support and to ensure that the helmet body 12 is neutrally buoyant in the water. Preferably the padding means 60 is made 21307~3 of gel material so as to be shaped to the user's head and thus providing maximum comfort.
At the bottom of the helmet body 12 there is provided a neck apron 62. The neck apron 62 is attached to the helmet body 12 by its 5 collar joint 64 which may be attache~l thereto by adhesive means. The neck apron 62 will prevent water from entering beneath the helmet body 12 and thus a diver may choose to dive without having to wear a full diving suit. If a diving suit is to be worn, the neck apron 62 may be inserted thereunder.
Also provided at the bottom of the helmet body 12 are fastening means 66 which may be of any conventional type, such as Velcro*.
The helmet body 12 may be made of plastic, fiberglass, carbon fiber or the likes. These materials are non-oY~ 7-~hle and can resist great 15 PLeS:jI11e at great depth, allowing the diver to go down to 4 atmosphere or more ( 30 ~l~eteL s or more ) under water .
While the foregoing pLefeLLed embodiment of the present invention has been described and shown, it is understood that all alternatives and modifications may be made thereto and fall within the 20 scope of the invention.
*Trade-mark
5 Backqround of the Invention In diving excursions there are instances where the diver's oxygen tank becom~s depleted or an umbilical line of the helmet ~csemhly is damaged, putting the diver in great danger, whereby he must rely on his companions for oxygen supply.
In such instances, usually the diver will release his helmet so that he can accept his rescuer's mouthpiece for oxygen supply. However, at great depth it is not safe to release the helmet due to the high pressure which can cause serious injuries and even death.
Therefore a helmet ~cspmhly having means to receive a 15 mouthpiece of a conventional air supply is desirable.
Further, in a conventional helmet ~ss~mhly the mouthpiece acts as a seal to the mouth opening of the helmet and thus, upon removal thereof water will leak into the interior of the helmet. This makes it impractical for a diver to share his oxygen supply.
Thus a helmet ASspmhly having means for allowing flow of air into the helmet when a mouthpiece of an air supply is connected thereto but preventing flow of water into the helmet when the mouthpiece is disconnected is also desirable.
5 Summary of the Invention It is an object of the present invention to provide a diver's helmet A.csPmhly having a L~ -o~able valve which allows flow of air into the helmet when an air supply is connected thereto and which prevents flow of water into the helmet when the air supply is disconnected.
It is a further object of the present invention to provide a valve which can be fitted into a helmet with a mouth opening, for the same purpose.
In accordance with one aspect of the present invention there is provided a valve for fitting into a diver's helmet and arranged normally 15 to allow flow of air into the helmet when an air supply is connected thereto and to prevent flow of water into the helmet when the supply is disconnPcted, comprising: a bushing arrangement to be fixed in leakproof mAnner in an opening into the helmet; a housing S1;~Ah1Y mounted in the bushing and fluid-tight therewith, the housing having an air supply 20 passage therethrough and having an outer end adapted for fluid-tight engagement with the mouthpiece of the air supply; valve means movable with the housing and capable of sealing the passage when the housing is in extended position relative to the bushing; spring means urging the housing outwardly to close the valve means, and retaining means carried by the bushing and engageable with the air supply; and being arranged so that when engaged with the air supply the housing is forced inwardly against the spring means to hold open the valve means, the valve means 5 closing automaffcally under action of the spring means when the air supply is lel,loved from the housing.
Preferably the le~ai--i--g means is an atta~ hmpnt clip pivotably hinged to the bushing arrangement at one end and movable thereto between a first posiffon in which the free end thereof is coupled with the 10 mouthpiece of the air supply as to cause locking of the mouthpiece to the valve and a second posiffon in which the mouthpiece can be disco~nected from the valve.
In accordance with another aspect of the present invenffon there is provided a helmet ~csemhly comprising: a helmet body for 15 placemPnt on the head of a user thereof and having a mouth opening; and a valve for fitting into the mouth opening and arranged normally to allow flow of air into the helmet when an air supply is connPcted thereto and to prevent flow of water into the helmet when the supply is disconnected, including a bushing arrangement to be fixed in leakproof m~nn~r in the 20 mouth opening of the helmet; a housing c~ hly mounted in said bushing and fluid-ffght therewith, the housing having an air supply passage therethrough and having an outer end adapted for fluid-tight engagement with the mouthpiece of the air supply; valve means movable with the housing and capable of sealing the passage when the housing is in 25 extended position relaffve to the bushing; spring means urging the 213~7~3 housing outwardly to close the valve means, and retaining means carried by the bushing and engageable with the air supply; and being arranged so that when engaged with the air supply the housing is forced inwardly against the spring means to hold open the valve means, the valve means 5 closing automatically under action of the spring means when the air supply is removed from the housing.
Conveniently the mouth opening of the helmet is located on the visor so as to be in the user's field of view. This will allow the user to connect and ~ co~nect the mouthpiece of the air supply with ease.
Preferably the helmet body includes a water intake valve for allowing a small amount of water to enter the helmet body upon opening thereof. This is mostly convenient for cle~ning the visor of the helmet when misted-up. The helmet body may also include a purge valve to drain the water out.
15 Brief Description of the Drawinqs An embodiment of the present invention will now be described by way of example with lefeLence to the accomr~nying drawings, in which:
Figure 1: in a perspective view, illustrates a diver's helmet ~cspmhly 20 having a le-llo~,able valve to fit a mouthpiece of a conventional air supply.
21307~3 Figure 2: in a perspective view, illustrates the L~-,lovable valve of the helmet AcsPmhly of Figure 1.
Figure 3: in an exploded view, illustrates the L~."ovable valve of Figure 2.
5 Figure 4: in cross-sectional view along line 4-4 of Figure 2, illustrates the removable valve of Figure 2 into condition when the mouthpiece of the air supply is Le",oved.
Figure 5: in a perspective view, illustrates a diver's helmet A-CsPmhly of Figure 1 wherein the interior of the helmet is shown.
10 Figure 6: in a cross-sectional view along lines 6-6 of Figure 1, illustrates the water intake valve of the diver's helmet Acsemhly of Figure 1.
Figure 7: in an exploded view, illu:jlLdtes the water intake valve of the diver's helmet ACSpmhly of Figure 1.
.~imilAr Lefele--ces are used in ~liff~Lellt figures to denote similar components.
Detailed Description Referring to Figures 1 to 7 there is illustrated a diver's helmet apparatus in accordance with an embodiment of the present invention.
Generally, the helmet assembly 10 includes a helmet body 12 5 for placPment over the head of a user and a separate valve 14 for fitting into a diver's helmet and arranged normally to allow flow of air into the helmet when the mouthpiece 16 of an air supply (not shown) is connected thereto and to prevent flow of water into the helmet when the mouthpiece 16 is disconnected. More specifically, the valve 14 fits into the mouth 10 opening 18 located on the visor 20 of the diver's helmet. The location of the mouth opening 18, is such that it is in the diver's field of vision and thus allowing the valve 14, once fitted into the mouth opening 18, to also be in the diver's field of vision. This permits the diver to see the valve 14 as he clips the mouthpiece 16 thereon whereas in conventional helmets 15 the mouthpiece is usually around the chin's area, which would not be convenient for the above situation.
As seen in Figures 2 to 4, the valve 14 includes a housing 22.
The housing 22 includes cylindrical portion A and frusto-conic~l portion B, whereby portion B is tapered to tightly fit into the mouthpiece 16. The 20 valve 14 further includes a bushing 24 which cl~ hly receives portion A
of housing 22 and to which is attached an atta~hm~nt clip 26 having means capable of lying in a plane transverse to the axis of the bushing 24 and adapted for securing the mouthpiece 16 on the tapered end of valve 14.
The att~hm~nt clip 26 is pivotably hinged to the bushing 24 at one end 21307~3 and movable thereto between a first position in which the att~hment clip 26 lies in a plane transverse to the axis of the bushing 24 with its free end coupled to the mouthpiece 16 so as to cause locking of the mouthpiece 16 to the valve 14 in air-tight relaffonship (Figures 1 and 5) and a second 5 position in which the attarhment clip 26 is pivoted downwardly with respect to the longitudinal axis of the valve 14 for disco~necting the mouthpiece 16.
Valve 14 further includes an air intake ring 28, a retaining pin 30, a compression spring 32, an att~rhmPnt ring 34 and a sealing cap 36.
10 Ring 28 is secured by screw threads into the inner end of housing 22.
The retaining pin 30 is threadedly connected to the air intake ring 28 at one end and to the sealing cap 36 at the opposite end thereof. The att~rhmPnt ring 34 serves to hold the bushing 24 in place. As shown in Figure 4, compression spring 32 can act on the bushing 24 and the 15 housing 22, urging the housing 22 outwardly and thus pulling sealing cap 36 downwardly to seal the air supply passage 38 of the bushing 24 in a fluid-tight m~nner so as to close the valve 14. However when the mouthpiece 16 is connpcted to the valve 14, the housing 22 is forced inwardly and the compression spring 32 compresses to hold open the valve 20 14.
Also, to prevent fluid leakage, O-rings 40a, 40b and 40c are included on the valve 14.
The helmet body 12 includes a visor 20 having compression clips 42a and 42b and hinge 44. The visor 20 may be opened by snapping 21~07~3 the compression clips 42a and 42b off and pivoting the visor 20 upward.
The visor 20 also includes sealing means ( not shown ) around the periphery thereof so as to provide a tight seal against the helmet body 12 when it is in a closed position.
At the top of the helmet body 12 is provided a water intake valve 46. This water intake valve 46 is particularly useful when the visor 20 of the helmet body 12 is misted-up. When pressed open, the water intake valve 46 will allow a small amount of water to enter the helmet body 12 so as to clean the visor 20. Water trapped in the helmet body 12 can subsequently be evacuated through the purge valve 48 located at the bottom of helmet body 12.
In Figures 6 and 7, the water intake valve 46 includes a bottom cap 50 having a water slit 52 therein, a flat O-ring 53, a conicAl spring 54, a pressure button 56, a round O-ring 57 and an end cap 58. The end cap 58 has an opening therein for receiving the pressure button 56 which is biased to a closed position by the conicAl spring 54. In this closed position the pressure button 56 provides a tight seal against the end cap 58 and prevents water from entering the helmet body 12. However upon depression of the pressure button 56 the seal is broken to allow water to leak in the helmet body 12.
The interior of the helmet body 12 is provided with padding means 60 for head support and to ensure that the helmet body 12 is neutrally buoyant in the water. Preferably the padding means 60 is made 21307~3 of gel material so as to be shaped to the user's head and thus providing maximum comfort.
At the bottom of the helmet body 12 there is provided a neck apron 62. The neck apron 62 is attached to the helmet body 12 by its 5 collar joint 64 which may be attache~l thereto by adhesive means. The neck apron 62 will prevent water from entering beneath the helmet body 12 and thus a diver may choose to dive without having to wear a full diving suit. If a diving suit is to be worn, the neck apron 62 may be inserted thereunder.
Also provided at the bottom of the helmet body 12 are fastening means 66 which may be of any conventional type, such as Velcro*.
The helmet body 12 may be made of plastic, fiberglass, carbon fiber or the likes. These materials are non-oY~ 7-~hle and can resist great 15 PLeS:jI11e at great depth, allowing the diver to go down to 4 atmosphere or more ( 30 ~l~eteL s or more ) under water .
While the foregoing pLefeLLed embodiment of the present invention has been described and shown, it is understood that all alternatives and modifications may be made thereto and fall within the 20 scope of the invention.
*Trade-mark
Claims (7)
1. A valve for fitting into a diver's helmet and arranged normally to allow flow of air into the helmet when an air supply is connected thereto and to prevent flow of water into the helmet when the supply is disconnected, comprising:
a bushing arrangement to be fixed in leakproof manner in an opening into the helmet;
a housing slidably mounted in said bushing and fluid-tight therewith, the housing having an air supply passage therethrough and having an outer end adapted for fluid-tight engagement with the mouthpiece of the air supply;
valve means movable with the housing and capable of sealing the passage when the housing is in extended position relative to the bushing;
spring means urging the housing outwardly to close the valve means; and retaining means carried by the bushing and engageable with the air supply; and being arranged so that when engaged with the air supply the housing is forced inwardly against the spring means to hold open the valve means, the valve means closing automatically under action of the spring means when the air supply is removed from the housing.
a bushing arrangement to be fixed in leakproof manner in an opening into the helmet;
a housing slidably mounted in said bushing and fluid-tight therewith, the housing having an air supply passage therethrough and having an outer end adapted for fluid-tight engagement with the mouthpiece of the air supply;
valve means movable with the housing and capable of sealing the passage when the housing is in extended position relative to the bushing;
spring means urging the housing outwardly to close the valve means; and retaining means carried by the bushing and engageable with the air supply; and being arranged so that when engaged with the air supply the housing is forced inwardly against the spring means to hold open the valve means, the valve means closing automatically under action of the spring means when the air supply is removed from the housing.
2. A valve as claimed in claim 1 wherein the retaining means is an attachment clip pivotably hinged to the bushing arrangement at one end and movable thereto between a first position in which the free end thereof is coupled with the mouthpiece of the air supply as to cause locking of the mouthpiece to the valve and a second position in which the mouthpiece can be disconnected from the valve.
3. A helmet assembly comprising:
a helmet body for placement on the head of a user thereof and having a mouth opening; and a valve for fitting into the helmet's body and arranged normally to allow flow of air into the helmet when an air supply is connected thereto and to prevent flow of water into the helmet when the supply is disconnected, including a bushing arrangement to be fixed in leakproof manner in an opening into the helmet;
a housing slidably mounted in said bushing and fluid-tight therewith, the housing having an air supply passage therethrough and having an outer end adapted for fluid-tight engagement with the mouthpiece of the air supply;
valve means movable with the housing and capable of sealing the passage when the housing is in extended position relative to the bushing;
spring means urging the housing outwardly to close the valve means, and retaining means carried by the bushing and engageable with the air supply; and being arranged so that when engaged with the air supply the housing is forced inwardly against the spring means to hold open the valve means, the valve means closing automatically under action of the spring means when the air supply is removed from the housing.
a helmet body for placement on the head of a user thereof and having a mouth opening; and a valve for fitting into the helmet's body and arranged normally to allow flow of air into the helmet when an air supply is connected thereto and to prevent flow of water into the helmet when the supply is disconnected, including a bushing arrangement to be fixed in leakproof manner in an opening into the helmet;
a housing slidably mounted in said bushing and fluid-tight therewith, the housing having an air supply passage therethrough and having an outer end adapted for fluid-tight engagement with the mouthpiece of the air supply;
valve means movable with the housing and capable of sealing the passage when the housing is in extended position relative to the bushing;
spring means urging the housing outwardly to close the valve means, and retaining means carried by the bushing and engageable with the air supply; and being arranged so that when engaged with the air supply the housing is forced inwardly against the spring means to hold open the valve means, the valve means closing automatically under action of the spring means when the air supply is removed from the housing.
4. A helmet assembly as claimed in claim 3 wherein the helmet body further comprises a water intake valve.
5. A helmet assembly as claimed in claim 4 wherein the helmet body further comprises a purge valve.
6. A helmet assembly as claimed in claim 5 wherein the helmet body further comprises a neck apron.
7. A helmet assembly as claimed in claim 6 wherein the valve is fitted on the visor of the helmet body so as to be in the viewer's field of view for easy connection or disconnection of the air supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2130743 CA2130743A1 (en) | 1994-08-23 | 1994-08-23 | Diver's helmet assembly having a removable valve to fit a conventional breathing apparatus mouthpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2130743 CA2130743A1 (en) | 1994-08-23 | 1994-08-23 | Diver's helmet assembly having a removable valve to fit a conventional breathing apparatus mouthpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2130743A1 true CA2130743A1 (en) | 1996-02-24 |
Family
ID=4154224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2130743 Abandoned CA2130743A1 (en) | 1994-08-23 | 1994-08-23 | Diver's helmet assembly having a removable valve to fit a conventional breathing apparatus mouthpiece |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2130743A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002047972A1 (en) * | 2000-12-13 | 2002-06-20 | Olivier Isler | Ergonomic diver's helmet in two separable parts with mouthpiece change system |
| CN107754106A (en) * | 2017-11-13 | 2018-03-06 | 上海依民安全装备有限公司 | A kind of escape system |
-
1994
- 1994-08-23 CA CA 2130743 patent/CA2130743A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002047972A1 (en) * | 2000-12-13 | 2002-06-20 | Olivier Isler | Ergonomic diver's helmet in two separable parts with mouthpiece change system |
| CN107754106A (en) * | 2017-11-13 | 2018-03-06 | 上海依民安全装备有限公司 | A kind of escape system |
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