EP0318157B1 - Soupape de débit automatique - Google Patents

Soupape de débit automatique Download PDF

Info

Publication number
EP0318157B1
EP0318157B1 EP88310169A EP88310169A EP0318157B1 EP 0318157 B1 EP0318157 B1 EP 0318157B1 EP 88310169 A EP88310169 A EP 88310169A EP 88310169 A EP88310169 A EP 88310169A EP 0318157 B1 EP0318157 B1 EP 0318157B1
Authority
EP
European Patent Office
Prior art keywords
valve
diaphragm
valve assembly
outlet
assembly according
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
EP88310169A
Other languages
German (de)
English (en)
Other versions
EP0318157A1 (fr
Inventor
David John Parker
Angela Margaret Parker
Martin John Parker
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.)
A P VALVES a partnership comprising David John Parker Angela Margaret Parker and Martin John Parker
Original Assignee
A P VALVES a partnership comprising David John Parker Angela Margaret Parker and Martin John Parker
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by A P VALVES a partnership comprising David John Parker Angela Margaret Parker and Martin John Parker filed Critical A P VALVES a partnership comprising David John Parker Angela Margaret Parker and Martin John Parker
Priority to AT88310169T priority Critical patent/ATE85010T1/de
Publication of EP0318157A1 publication Critical patent/EP0318157A1/fr
Application granted granted Critical
Publication of EP0318157B1 publication Critical patent/EP0318157B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B63C9/00—Life-saving in water
    • B63C9/08—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
    • B63C9/11—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like covering the torso, e.g. harnesses
    • B63C9/125—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like covering the torso, e.g. harnesses having gas-filled compartments
    • B63C9/1255—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like covering the torso, e.g. harnesses having gas-filled compartments inflatable
    • 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
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • B63C11/2245—With provisions for connection to a buoyancy compensator

Definitions

  • the present invention relates generally to an automatic delivery valve, and particularly to a delivery valve adapted for use with a life jacket.
  • Adjustable buoyancy life jackets have found increasing popularity with both sport and professional divers. Such life jackets can be used to control buoyancy by the selective introduction of air from an air bottle, and this air is not lost when introduced into the life jacket in the sense that it can be withdrawn for emergency breathing if the main breathing air bottle should become exhausted.
  • the air for the life jacket may be drawn directly from the main breathing air system via a coupling incorporating a valve system, as described in prior UK Patent GB 2084881, the coupling also serving to provide a connection to a mouthpiece through which air can be withdrawn from the jacket.
  • US 3,898,705 on the other hand describes a coupling having a connection for oral inflation of a jacket and a supplementary connection to an air bottle which can readily be disconnected, as well as providing an outlet to a mouthpiece.
  • Other life jackets have a small auxiliary or emergency air bottle, into which air from the main bottle is decanted before a dive, which can be used to inflate the life jacket from time to time as necessary, and although it contains only a relatively small amount of air compared with the main air bottle, this can be critical in determining whether the diver can safely reach the surface in an emergency.
  • a secondary hose leads from the interior of the life jacket to a secondary mouthpiece held in a clip from which it can be removed to be placed in the diver's mouth when necessary.
  • the present invention seeks therefore to provide a novel valve for breathing apparatus of the type having a single mouthpiece and two inlets, which valve will automatically supply air from one inlet (for example the air bottle) for as long as this is available and then change over to supply air from the other inlet (for example the life jacket) without requiring any action by the user.
  • the invention is :
  • a valve assembly for use in self-contained underwater breathing apparatus, the valve assembly having two inlets, a single outlet and first and second valves controlling the flow of fluid from a respective inlet to the outlet the first valve being controlled to open or close by a first diaphragm, characterised in that the second valve is also controlled to open or close by a respective second diaphragm, the said first and second diaphragms experiencing substantially the same pressure differential but having a different mechanical resistance from one other so that the first valve open to allow fluid flow from one inlet to the outlet when the pressure differential reaches a first critical valve and the second valve opens to allow fluid flow from the other inlet to the outlet at a second critical valve which is higher than the first.
  • the outlet communicates with a common internal chamber to the pressure within which both the first and second diaphragms are exposed on one face.
  • the outlet is a mouthpiece for breathing and the first and second inlets are adapted to be connected to primary and secondary sources of breathable gas respectively, although for other uses not falling within the scope of this invention the inlets and outlets could be connected to other sources and destinations and the fluid, the flow of which is controlled by the valve, could be a liquid rather than a gas.
  • the present invention also comprehends a life jacket fitted with such a valve assembly.
  • This valve assembly may be used as a secondary mouthpiece for the diver's partner if the partner's air supply should fail, and also may be used as an emergency supply of air from the life jacket if the diver's own air supply should fail.
  • the only difference between inhalation through the secondary mouthpiece when drawing air from the air bottle or the life jacket is the slightly greater force of suction required to create the higher pressure differential between the interior of the valve chamber and the external environment to open the said other valve which is connected to the life jacket interior.
  • the secondary mouthpiece will for the majority of the time be clipped to a mount on the life jacket and not be placed in the user's mouth it will itself fill with water and in order to clear it before use the said first valve is preferably provided with a manually operable control member operable to open the first valve to allow air to pass through and clear water from the valve chamber after having been introduced into the user's mouth and prior to inhalation.
  • the life jacket illustrated in Figure 1 comprises two main lateral buoyancy chambers 12, 13 communicating with generally tubular buoyancy chambers 14, 15 which are positioned behind the diver when the life jacket is fitted.
  • the life jacket illustrated in Figure 1 also serves as a harness, for mounting a gas bottle 16 (usually air) for which purpose the lifejacket incorporates a main substantially rigid dorsal member 17 which forms a rigid base on which the fabric panels defining the chambers referred to above are held. Attached to this dorsal member 17, and to the buoyancy chambers are attachment straps 18, 19 of a fixing harness, by which the life jacket can be fitted to a wearer.
  • This life jacket is shown and described purely as an example of the application of the valve of the present invention, however, and it will be appreciated that other forms of lifejacket, particularly conventional collar-type jackets, may be equally well used.
  • a flexible hose 20 which carries at its free end, a valve assembly 21 having a mouthpiece 29, formed as an emergency demand valve, as will be described in more detail in relation to Figure 2, and by means of which it is possible for a second diver to breathe air from the bottle 16 or for either diver to breathe the air contained within the life jacket in an emergency.
  • Air can be introduced into the life jacket from an emergency air bottle contained in a pocket 90 or from the main air bottle as will be described below.
  • the main lateral buoyancy chambers 12, 13 have a rather elongate flattened configuration and are prevented from adopting a spherical or near spherical shape upon inflation by the use of retainers 26 which act to "quilt" the chambers 12, 13 retaining them in the desired approximately planar shape so that they do not restrict the arms of a wearer as is described in our co-pending British Patent application published under Serial No 2,197,627A.
  • valve 21 illustrated is a development of the valve for underwater breathing apparatus described and claimed in our British Patent No 1,339,898, and comprises a valve casing 22, preferably made of injection moulded plastics (although other techniques may be used) in a shape forming two main cylindrical chambers 23, 24 joined by a transverse passage 25.
  • the casing 22 may be enclosed within an outer cover shown in broken outline in Figure 2, which provides a shaped exterior surface convenient to grip when handling the valve with gloves.
  • a mouthpiece passage 26 defined by a tubular spigot 27 having a perimetral annular ridge 28 for retaining a mouthpiece 29 of conventional form having a cooperating internal annular groove for receiving the ridge 28 and an external annular groove 10.
  • the mouthpiece 29 is made of a soft elastomeric material sufficiently resilient to be fitted over the spigot 27 and annular ridge 28 and to retain itself thereon with the aid of a retainer band (not shown) fitted into the groove 10.
  • the cylindrical chamber 24 is terminated at one end by an inwardly directed annular projection 31 and at the other end by a cup-shape enlargement 32 comprising a disc-like flat radial wall 33, a cylindrical wall 34 and a conically tapered intermediate wall 35 joining the flat radial wall 33 at the base of the cup with the cylindrical wall 34.
  • the cup-shape enlargement 32 houses a resilient diaphragm 36 reinforced on opposite faces by a rigid disc 37, on one side and a relatively hard rubber disc 38 on the other, which also mount the diaphragm 36 to a central valve shaft 39 which extends from the diaphragm 36 through the cylindrical bore 24 and is connected at its other end to a valve shutter 40 having a conical face 41 which cooperates with the radially inwardly projecting annular ridge 31.
  • the ridge 31 also acts as an abutment for one end of a compression coil spring 42 the other end of which engages against an enlarged end of the central valve shaft 39, thereby urging the valve stem 39 and consequently the valve 40 axially towards the cup-shape enlargement 32 thereby holding the valve 40 closed with its conical face 41 pressed firmly against the annular inward projection 31.
  • Axially aligned with the cylindrical bore 24 is a cylindrical spigot 30 of similar diameter which is shaped to receive a connector 47 to the hose 20 leading to the lifejacket 11.
  • the interior bore of the spigot 30 communicates via a transverse passageway 44 with a manually controllable valve generally indicated with the reference numeral 45 housed in one end of the bore 23 which extends parallel to the bore 24 in the valve casing 22.
  • the valve 45 comprises a valve body 46 of generally cylindrical form the diameter of which closely matches that of the bore 23 so that it is a sealed fit within it.
  • the valve body 46 has an axial passage 48 and a transverse passage 49 intersecting the axial passage 48 and aligned with the transverse passage 44 in the valve body 22 leading to the interior of the spigot 30.
  • a slide valve member 50 having a narrow central stem 51 and an enlarged head end 52 which seals within an annular seal 53 housed in an annular groove in the transverse passage 49.
  • the foot end 55 has an enlarged cap 56 against which abuts a compression coil spring 57 which surrounds the foot end 55 and passes through an aperture 58 to contact the valve body 46 at its other end urging the valve slide member 50 towards the left as viewed in Figure 2 maintaining the large head end 52 in contact with the sealing, ring 53 and thereby closing communication between the axial passage 48 and the transverse passage 44.
  • the valve slide 50 On depression of the lever 59 the valve slide 50 is displaced towards the right as viewed in Figure 2, against the action of the biasing spring 57, to a position where the enlarged head end 52 is displaced from the sealing ring 53 to allow communication between the axial passage 48 and the transverse passage 44 via the transverse passage 49 and the narrow stem 51 of the valve member 50.
  • the transverse passage 44 in the valve casing 22 is of slightly greater diameter than the transverse passage 49 in the valve body 46 so that the enlarged head end 52 of the valve member 50 is received in the former with a sufficient clearance to allow the ready transfer of air.
  • the axial passage 48 communicates, via a filter 116, with a stem 61 having a connector 62 to which is connected an air line 63 ( Figure 1) leading from a control regulator valve 64 of the main air bottle 16.
  • the regulator valve 64 also supplies an air line 65 to a main mouthpiece 66 for normal use and the mouthpiece 21 is provided with a clip or other appropriate housing by which it can be secured against unwanted movement when not in use.
  • a servo valve 67 having a pilot valve 80 with a control lever 68 the end of which is engaged against the inner end 69 of a stem 70 carried by a rolling diaphragm 71 within a diaphragm chamber generally indicated 72 having opposite radial walls 73, 74 with respective apertures 75, 76.
  • Each of the radial walls 73, 74 has a respective peripheral axial flange 77, 78 defining cylindrical walls the ends of which trap the diaphragm 71 between them.
  • the stem 70 is guided in respective central apertures in the radial walls 73, 74 and a free end 79 thereof projects from the diaphragm chamber 72 in order to act as a push button which can be pressed to cause axial displacement of the stem 70, guided by the central apertures in the radial walls 73, 74 causing the lever 68 to depress and open the pilot valve 80 of the servo valve 67 as will be described below.
  • Axial displacement of the stem 70 may also be caused by a pressure differential across the diaphragm 71.
  • the servo valve 67 comprises an inverted cup-shape body 81 ( Figure 4) fitted over the upper end of the cylindrical valve body 46 housing the manually operable valve 45.
  • the cup-shape body 81 has an outer diameter which is less than the inner diameter of the bore 23 so as to leave an annular passage way 82 between them, and the open end of the inverted cup-shape body 81 fits over a radial flange 83 having axial apertures 84 the upper ends of which are closed by the periphery of a resilient disc 85 clamped between the flange 83 and an apertured spacer disc 86 lodged between the perimeter of the disc 85 and a shoulder on the inner wall of the inverted cup-shape valve body 81.
  • the resilient disc 85 has a calibrated central aperture 87 whilst the spacer 86 has a plurality of apertures 88 allowing communication between an upper chamber 89 within the inverted cup-shape valve body 81 and an intermediate chamber 90 between the spacer disc 86 and the resilient valve disc 85.
  • the pilot valve 80 is shown in more detail in Figure 3 and comprises two aligned semi-cylindrical bodies 91, 92 separated by a gap 93.
  • the first body 91 houses a nozzle member 94 having a central body portion 95 the diameter of which is less than that of the bore 96 ( Figure 4) in the body 91 in which it is housed.
  • the central body 95 has apertures 97 communicating from its exterior surface to an interior axial passage 98 leading to an orifice 99 at an exposed nozzle end 100 projecting into the gap 93.
  • the body 95 has an enlarged threaded head 101 with a slot 102 by means of which the axial position of the nozzle member 94 in the housing 91, and therefore to adjust its position within the gap 93.
  • a slidable stem 104 with an enlarged head 105 forming a valve shutter pad engageable against the orifice 99 in the nozzle end 100 of the nozzle member 94.
  • the stem 104 is slidable axially of the housing 92 under the action of the lever 68 which, as can be seen in Figure 3, has a bifocated stirrup portion 106 at its pivot end, having two inwardly directed flat fingers 107, 108 which are held against an end face 109 of the housing 92 with the interposition of a washer 110.
  • a second washer 111 is held in place on a threaded end 112 of the stem 104 by a pair of lock nuts 113, 114 and the stem 104 is resiliently biased to the left as viewed in Figure 2 by a coil spring 115 which draws the threaded end 112 and, with it, the washer 111 and the lock nuts 113, 114 against the fingers 107, 108 to hold them flat against the washer 110 and to determine the pressure exerted on the nozzle end 100 of the nozzle member 94.
  • valve of the invention is fitted to the ends of the hose 20 leading to the life jacket 11 and the line 63 leading to the valve 64 on the air bottle 16.
  • valve defined by the valve body 40 and the radial projection 31 is closed by the spring 42
  • the valve defined by the enlarged end 52 of the valve member 50 is closed by its engagement with the seal 53
  • the servo valve 67 is closed to prevent the flow of air from the axial passage 48.
  • the mouthpiece 21 is secured on a suitable mount (not shown) where it is available for use but not in the way of the diver utilising the main mouthpiece 61.
  • a first function of the valve of the present invention is to make available the option of a second diver utilising the air supply of the air bottle 16 should any fault in his own air supply develop.
  • this depression is transferred to the upper side of the flexible diaphragm 85 which thus flexes upwardly in the middle, being trapped around the periphery by the spacer 86, to lift its surface from the annular array of passages 84 thereby creating a route for air from the chamber 48 between the now upwardly flexed diaphragm 85 and its seat, through the passages 84, along the narrow annular space 82 between the valve body 81 and the cylindrical bore 23, and so through the chamber 25 into the passage 26 of the mouthpiece.
  • the calibrated aperture 87 in the flexible diaphragm 85 allows a slow leakage of air from the chamber 48 into the upper chambers 89 and 90 so that this flexible diaphragm 85 will close as the pressure in the chamber 25 rises at the end of inhalation.
  • the lever 59 may be depressed to allow air from the gas bottle 16 to be introduced into the lifejacket 11. This causes axial displacement of the end cap 56 and, consequently, the valve stem 51 and enlarged end 52 until the latter is no longer in register with the annular seal 53 in the groove in the valve body 46, whereupon air can communicate through the stem 61 and the axial passage 48, via the transverse passage 44 in the valve casing 22 and into the interior chamber 30 of the spigot 43 which is connected to the hose 20.
  • the mouthpiece 21 may be used either by a second diver or by the diver wearing the life jacket 11, either to breathe air from the bottle 16, in parallel with the main mouthpiece 66, or alternatively to breathe air from the life jacket 11 (in which latter case,if there are two divers, the mouthpiece 21 may have to be shared for alternate breaths).
  • Buoyancy can be reduced by manual depression of the stem 39, acting on a button 117 at the free end thereof, to open the valve 40 and allow air to pass out through the mouthpiece 29 or, if the diver has the mouthpiece in his mouth, around the edges of the resilient diaphragm 36, thereby controlling the rate of ascent and avoiding the risk of the bends by partially deflating the life jacket.
  • the valve also allows the life jacket to be inflated, for example, on the surface, if there is no supply of compressed air available, simply by pressing button 117 on the free end of the shaft 39 hard until the rubber reinforcing disc 38 closes against the shoulder 33 and then blowing into the mouthpiece 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Centrifugal Separators (AREA)
  • Gas Separation By Absorption (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Check Valves (AREA)
  • Fluid-Driven Valves (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Claims (11)

  1. Ensemble de vannes, utilisé dans un scaphandre autonome, comportant deux entrées (30, 62), une sortie simple (26), une première et une seconde vannes (40, 67) qui contrôlent le débit de fluide provenant d'une entrée respective jusqu'à la sortie, l'ouverture ou la fermeture de la première vanne (40) étant commandée par une première membrane (36), caractérisé par le fait que l'ouverture ou la fermeture de la seconde vanne (67) est également commandée par une seconde membrane respective (71), les première et seconde membranes (36, 71) étant soumises sensiblement à la même pression différentielle mais présentant une résistance mécanique différente, de sorte que la première vanne (40) s'ouvre pour laisser passer le fluide d'une entrée (62) vers la sortie (26) lorsque la pression différentielle atteint une première valeur critique, et que la seconde vanne (67) s'ouvre pour laisser passer le fluide de l'autre entrée (30)vers la sortie (26) à une seconde valeur critique supérieure à la première.
  2. Ensemble de vannes selon la revendication 1, caractérisé par le fait que la sortie (26) communique avec une chambre interne commune (25) à la pression de laquelle les première et secondes membranes (36, 71) sont exposées sur une face.
  3. Ensemble de vannes selon l'une ou l'autre des revendications 1 ou 2, caractérisé par le fait que la sortie (26) comporte une embouchure (29) pour la respiration et que les deux entrées (30, 62) sont adaptées pour être raccordées, respectivement, aux sources primaire (16) et secondaire (11) de gaz respirable.
  4. Ensemble de vannes selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que la première vanne (67) est actionnable manuellement pour permettre le passage du gaz dans l'ensemble de vannes à partir de l'entrée (62) vers la sortie, afin d'évacuer le fluide de l'intérieur de l'ensemble.
  5. Ensemble de vannes selon l'une ou l'autre des revendications 3 ou 4, caractérisé par le fait qu'une autre vanne d'évacuation unidirectionnelle (32) permet l'exhalation par l'embouchure (29) de l'ensemble de vannes.
  6. Ensemble de vannes selon la revendication 5, caractérisé par le fait que la vanne d'exhalation unidirectionnelle (32) est constituée par une seconde membrane (36) reliée à la seconde vanne (40) pour ouvrir cette dernière (40) lorsque la seconde valeur critique supérieure de pression différentielle est atteinte.
  7. Ensemble de vannes selon l'une quelconque des revendications 1 à 6, caractérisé par le fait que la vanne (67) comporte une membrane (85), immobilisée sur sa périphérie dans un support (46, 83), comportant des ouvertures (84), fermées par la membrane (85) à l'état de repos, et ouvertes par l'affaissement de la membrane dans une première direction pour assurer la communication entre l'entrée (62) et la sortie (26).
  8. Ensemble de vannes selon la revendication 7, caractérisé par le fait que la pression différentielle s'exerçant sur la membrane (85) de la vanne (67), et par suite son affaissement, est contrôlée par un clapet pilote (80) par déplacement de la première membrane (71).
  9. Ensemble de vannes selon l'une ou l'autre des revendications 7 ou 8, caractérisé par le fait que la membrane (85) de la première vanne possède une ouverture centrale calibrée (87) qui permet l'échappement contrôlé de gaz vers une chambre de contrôle de la première vanne.
  10. Ensemble de vannes selon l'une quelconque des revendications 7 à 9, caractérisé par le fait que le clapet pilote (80) comprend un ajutage (94) réglable longitudinalement dans un corps (91) et un élément de fermeture d'ajutage (105) déplaçable axialement par rapport à l'ajutage (94) afin d'ouvrir ou de fermer l'orifice de l'ajutage (99); l'élément de fermeture d'ajutage (105) étant commandé par un levier (68) dont l'une des extrémités est déplacée par le mouvement de la première membrane (71).
  11. Gilet de sauvetage (11) comportant un ensemble de vannes selon l'une quelconque des revendications 1 à 10, dans lequel une première entrée (62) est raccordable à une bouteille d'air (16), une seconde entrée (30) est reliée à un flexible (20) menant à l'intérieur du gilet de sauvetage (11), la sortie (26) étant constituée d'une embouchure (29), caractérisé par le fait que l'ensemble de vannes fonctionne automatiquement dès l'inhalation par l'embouchure (29), pour aspirer l'air par la seconde entrée (30) lorsque le fluide n'est pas disponible à la première entrée.
EP88310169A 1987-10-28 1988-10-28 Soupape de débit automatique Expired - Lifetime EP0318157B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88310169T ATE85010T1 (de) 1987-10-28 1988-10-28 Automatisches zufuhrventil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8725208 1987-10-28
GB878725208A GB8725208D0 (en) 1987-10-28 1987-10-28 Automatic delivery valve

Publications (2)

Publication Number Publication Date
EP0318157A1 EP0318157A1 (fr) 1989-05-31
EP0318157B1 true EP0318157B1 (fr) 1993-01-27

Family

ID=10626015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88310169A Expired - Lifetime EP0318157B1 (fr) 1987-10-28 1988-10-28 Soupape de débit automatique

Country Status (5)

Country Link
EP (1) EP0318157B1 (fr)
AT (1) ATE85010T1 (fr)
DE (1) DE3877915T2 (fr)
ES (1) ES2037237T3 (fr)
GB (1) GB8725208D0 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9305256D0 (en) * 1993-03-15 1993-05-05 Craske Stephen A Scuba breathing apparatus
US5620282A (en) * 1994-12-12 1997-04-15 Diving Unlimited International Buoyancy compensator assembly
GB9719824D0 (en) 1997-09-18 1997-11-19 A P Valves Self-contained breathing apparatus
IT1311945B1 (it) * 1999-06-30 2002-03-20 Scubapro Europ Giubbotto equilibratore per subacquei.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219034A (en) * 1962-07-31 1965-11-23 Kalenik Ladimur Underwater breathing apparatus
US3898705A (en) * 1974-09-13 1975-08-12 Pittman Products Inc Convertible inflation control for underwater diving vests
GB2084881B (en) * 1980-09-24 1983-11-23 Hardy George Brian Breathing device
GB8609684D0 (en) * 1986-04-21 1986-05-29 Buoyco Divers Ltd Venting valve apparatus

Also Published As

Publication number Publication date
DE3877915D1 (de) 1993-03-11
EP0318157A1 (fr) 1989-05-31
GB8725208D0 (en) 1987-12-02
ES2037237T3 (es) 1993-06-16
DE3877915T2 (de) 1993-06-09
ATE85010T1 (de) 1993-02-15

Similar Documents

Publication Publication Date Title
EP1512426B1 (fr) Valve d'expiration
US4239038A (en) Manual resuscitators
EP0401307B1 (fr) Masque a oxygene pour equipage avec ajustement de confort a air comprime
US4606340A (en) Combined pressure compensating exhalation and anti-suffocation valve
US4996982A (en) Emergency breathing apparatus with holster released regulator valve
US4068657A (en) Constant volume buoyancy compensation system
US4227521A (en) Air system for scuba diving
US4573463A (en) Breathing mask
EP0278598B1 (fr) Appareil respiratoire autonome pour plongée sous-marine
US12043357B2 (en) Diving mask with pressure-balancing means
US5645047A (en) Inhalation mask
US4211220A (en) Diving helmet assembly
EP0021803B1 (fr) Soupapes et appareil respiratoire comportant de telles soupapes
US20100126503A1 (en) Scuba mask purging apparatus and method
EP0318157B1 (fr) Soupape de débit automatique
US3570808A (en) Coupling assembly for underwater face mask
US4503852A (en) Pilot controlled regulator second stage
EP0143618A2 (fr) Valve d'expiration
US3938511A (en) Mouthpiece regulator for an underwater breathing apparatus
US3143739A (en) Face mask for divers
JPH0771957B2 (ja) 潜水用浮力調整装置
EP0615899A2 (fr) Appareil respiratoire autonome pour plongée sous-marine
GB2340760A (en) A mouthpiece valve for closed-loop self-contained breathing apparatus
EP0019488B1 (fr) Soupape basculante et respirateur dans lequel elle est utilisée
JP3874731B2 (ja) 潜水具

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

17P Request for examination filed

Effective date: 19890825

17Q First examination report despatched

Effective date: 19901128

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19930127

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930127

Ref country code: LI

Effective date: 19930127

Ref country code: BE

Effective date: 19930127

Ref country code: AT

Effective date: 19930127

REF Corresponds to:

Ref document number: 85010

Country of ref document: AT

Date of ref document: 19930215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3877915

Country of ref document: DE

Date of ref document: 19930311

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2037237

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 88310169.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19971030

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990501

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19990501

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20001031

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20001229

Year of fee payment: 13

REG Reference to a national code

Ref country code: GB

Ref legal event code: 711B

REG Reference to a national code

Ref country code: GB

Ref legal event code: 711G

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011029

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011029

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

EUG Se: european patent has lapsed

Ref document number: 88310169.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20021017

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20021218

Year of fee payment: 15

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20021113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051028

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20071005

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20081027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20081027