EP0269900A1 - Régulateur d'air pour appareil respiratoire - Google Patents

Régulateur d'air pour appareil respiratoire Download PDF

Info

Publication number: EP0269900A1
Authority: EP; European Patent Office
Prior art keywords: air; conduit; valve; airflow circuit; user
Prior art date: 1986-11-12
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

Application number

EP87116264A

Other languages

German (de)

English (en)

Other versions

EP0269900B1 (fr

Inventor

Enrico Domenico Bozano

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

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.)

1986-11-12

Filing date

1987-11-05

Publication date

1988-06-08

1987-11-05 Application filed by Individual filed Critical Individual

1987-11-05 Priority to AT87116264T priority Critical patent/ATE54637T1/de

1988-06-08 Publication of EP0269900A1 publication Critical patent/EP0269900A1/fr

1990-07-18 Application granted granted Critical

1990-07-18 Publication of EP0269900B1 publication Critical patent/EP0269900B1/fr

2007-11-05 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 15
238000011144 upstream manufacturing Methods 0.000 claims description 3
238000013016 damping Methods 0.000 claims description 2
230000004048 modification Effects 0.000 description 3
238000012986 modification Methods 0.000 description 3
238000005192 partition Methods 0.000 description 3
238000006073 displacement reaction Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
239000002184 metal Substances 0.000 description 1
230000001105 regulatory effect Effects 0.000 description 1
238000007789 sealing Methods 0.000 description 1

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
- 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
- B63C11/2227—Second-stage regulators

Definitions

This invention relates to an air regulator for breathing apparatus, particularly for underwater breathing apparatus.
One of the most serious problems in the field of underwater breathing apparatus is to regulate the air flowrate supplied to a scuba-diver under particular conditions of oxigen requirements, such as when the scuba-diver is panting.
conventional regulators comprise a first stage for reducing the pressure of the air from the bottles, communicating with a second-stage reducing device which feeds the air into a hose to a mouthpiece for the user, the regulation of the amount of air supplied by said second-stage device upon each breathing act of the user being effected by valve-controlled devices under the action of a manostat diaphragm.
These conventional devices supply, upon each breathing act, an amount of air which is independent of the actual need of a user, said amount being limited by the diameter of the holes through which the air is passed.
the main object of this invention is to provide a regulator of the type mentioned above, wherein the second stage comprises a first airflow circuit, controlled by a manostat diaphragm in a conventional manner, which permits the assumption of the minimum required amount of air upon each act of breathing; and a second airflow circuit combined with said first circuit and in parallel therewith, which permits to supply - in case of deep or panting breathing of the user - a supplementary amount of air to meet any requirement of the user.
the illustrated device comprises, as known per se, a body member 1 formed with an interior cylindrical chamber 2 communicating at an end thereof with an air inlet conduit 3 connected to the first stage of the regulator, and including at the other end thereof an opening 4 which constitutes a valve seat on the outer side thereof.
a cylindrical conduit 6 Concentric with the chamber 2 is a cylindrical conduit 6 slidably accommodating a small piston 7.
Said piston 7 is formed with an axial exactly-dimensioned hole 117 and comprises, on the end facing towards the valve seat 4 of said chamber 2, an annular seal 5 which normally rests against said valve seat to close it.
Said piston 7 is constantly urged against the valve seat 4 by a spring 8 abutting at an end thereof against said piston 7 and at the other end thereof against an apertured partition 9 arranged across the conduit 6.
Said partition 9 is provided with a central hole 10 which is formed as a valve seat on its side far from said piston 7.
the valve seat on the hole 10 co-operates with a valve member 11 mounted on a pivotable lever 12 which co-operates with a manostat diaphragm 13 mounted on the body member 1 of the regulator.
Said conduit 6, upstream of the piston 7, is formed with a hole 14 for communicating with a conduit 15 which is connected to the mouthpiece for the user.
Said lever 12 is pivotably mounted on a fulcrum 16 and is constantly urged by a spring 17 housed within the body member 1, so as to seat the valve member 11 against the valve seat 10.
the regulator prevents any flow of air from the conduit 3 to the conduit 15.
the reduced pressure created within the body member 1 causes, through the displacement of the diaphragm 13, the lever 12 to pivot against the action of the spring 17, whereby the valve member 11 is moved away from its valve seat permitting the air to flow from the conduit 3 to the chamber 2 and successively through the hole 4, the hole 117 of the piston 7, the valve seat 10 and the hole 18 in the wall of the conduit 6, downstream of the piston 7, to the conduit 15.
the piston 7 is replaced by a valve member 7 ⁇ comprising a metallic tubular element 107 ⁇ enwrapped circumferentially by a rubber shell 207 ⁇ extending radially inwards at one end thereof so as to form a diaphragm 307 ⁇ having a central hole wherein a metal nozzle 407 ⁇ with a central exactly-dimensioned through-hole 117 is sealingly embedded.
the valve member 7 ⁇ is not slidable in the tubular conduit 6 as its upper end abuts against the partition 9 and its opposite end rests against the valve seat 4 through said diaphragm 307 ⁇ . The operation of the just-described device is apparent.
the diaphragm 307 ⁇ is lifted from said seat 4 by virtue of its resiliency, thus permitting the air to pass from the seat 4 through the by-pass hole 14 to the conduit 15.
FIG. 3 shows a modification of the valve member 7 ⁇ of the figures 2 and 4.
the valve member comprises a cylindrical metallic body 507 ⁇ provided with a sealing O-ring 607 ⁇ on its outer surface.
the bottom end of the body 507 ⁇ is closed by a rubber diaphragm 707 ⁇ having a central hole wherein a nozzle 407 ⁇ with an exactly-dimensioned through-hole 117 is embedded.
valve member The arrangement and operation of this valve member are exactly the same as those described above in connection with the embodiment of the figures 2 and 4.
the lever 12 is subjected to a minimum pressure and opens the valve member 11, thus permitting the flow of air through the exactly-dimensioned hole 117 and the opening 10 to the conduit 15 so as to permit a good breathing. If, due to any reason, the demand of air increases, the servo-control mechanism is activated whereby the larger valve 4 is opened and an additional flow of air is delivered to the conduit 15, through said by-pass circuit, so as to eliminate any damping condition immediately.

Landscapes

Health & Medical Sciences (AREA)
General Health & Medical Sciences (AREA)
Pulmonology (AREA)
Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Ocean & Marine Engineering (AREA)
Respiratory Apparatuses And Protective Means (AREA)
General Details Of Gearings (AREA)
Self-Closing Valves And Venting Or Aerating Valves (AREA)
Nozzles (AREA)

EP87116264A 1986-11-12 1987-11-05 Régulateur d'air pour appareil respiratoire Expired - Lifetime EP0269900B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT87116264T ATE54637T1 (de)	1986-11-12	1987-11-05	Luftregler fuer atemschutzgeraet.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
IT12579/86A IT1200316B (it)	1986-11-12	1986-11-12	Dispositivo erogatore d aria per autorespiratori
IT1257986		1986-11-12

Publications (2)

Publication Number	Publication Date
EP0269900A1 true EP0269900A1 (fr)	1988-06-08
EP0269900B1 EP0269900B1 (fr)	1990-07-18

Family

ID=11141830

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87116264A Expired - Lifetime EP0269900B1 (fr)	1986-11-12	1987-11-05	Régulateur d'air pour appareil respiratoire

Country Status (4)

Country	Link
EP (1)	EP0269900B1 (fr)
AT (1)	ATE54637T1 (fr)
DE (1)	DE3763808D1 (fr)
IT (1)	IT1200316B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1995012519A1 (fr) *	1993-11-05	1995-05-11	Poseidon Industri Ab	Systeme de soupape et regulateur de respiration le comprenant
EP3322489A4 (fr) *	2015-07-15	2019-03-13	MSA (Suzhou) Safety Equipment R&d Co., Ltd.	Ensemble régulateur de pression et ensemble de dérivation destinés à un appareil de respiration autonome

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3456642A (en) *	1966-12-27	1969-07-22	Automatic Sprinkler Corp	Demand actuating means for alternate breathing supply
FR2050809A5 (fr) *	1969-06-25	1971-04-02	Bronnec Jean
US3783891A (en) *	1972-03-22	1974-01-08	Under Sea Industries	Balanced regulator second stage
GB2014047A (en) *	1978-02-13	1979-08-22	Isaacson M	Demand inhalation valve system

1986
- 1986-11-12 IT IT12579/86A patent/IT1200316B/it active
1987
- 1987-11-05 DE DE8787116264T patent/DE3763808D1/de not_active Expired - Lifetime
- 1987-11-05 EP EP87116264A patent/EP0269900B1/fr not_active Expired - Lifetime
- 1987-11-05 AT AT87116264T patent/ATE54637T1/de not_active IP Right Cessation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3456642A (en) *	1966-12-27	1969-07-22	Automatic Sprinkler Corp	Demand actuating means for alternate breathing supply
FR2050809A5 (fr) *	1969-06-25	1971-04-02	Bronnec Jean
US3783891A (en) *	1972-03-22	1974-01-08	Under Sea Industries	Balanced regulator second stage
GB2014047A (en) *	1978-02-13	1979-08-22	Isaacson M	Demand inhalation valve system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1995012519A1 (fr) *	1993-11-05	1995-05-11	Poseidon Industri Ab	Systeme de soupape et regulateur de respiration le comprenant
US5724961A (en) *	1993-11-05	1998-03-10	Poseidon Industri Ab	Valve arrangement and a breathing regulator which includes such a valve arrangement
EP3322489A4 (fr) *	2015-07-15	2019-03-13	MSA (Suzhou) Safety Equipment R&d Co., Ltd.	Ensemble régulateur de pression et ensemble de dérivation destinés à un appareil de respiration autonome
US11298571B2 (en)	2015-07-15	2022-04-12	MSA (Suzhou) Safety Equipment R&D Co., Ltd.	Pressure regulator assembly and bypass assembly for a self-contained breathing apparatus
US11497945B2 (en)	2015-07-15	2022-11-15	MSA (Suzhou) Safety Equipment R&D Co., Ltd.	Pressure regulator assembly and bypass assembly for a self-contained breathing apparatus

Also Published As

Publication number	Publication date
EP0269900B1 (fr)	1990-07-18
IT8612579A0 (it)	1986-11-12
ATE54637T1 (de)	1990-08-15
DE3763808D1 (de)	1990-08-23
IT1200316B (it)	1989-01-12

Legal Events

Date	Code	Title	Description
1988-04-23	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
1988-06-08	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AT CH DE ES FR GB LI NL SE
1989-01-18	17P	Request for examination filed	Effective date: 19881123
1989-09-06	17Q	First examination report despatched	Effective date: 19890721
1990-06-02	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1990-07-18	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT CH DE ES FR GB LI NL SE
1990-07-18	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19900718 Ref country code: NL Effective date: 19900718 Ref country code: AT Effective date: 19900718
1990-07-18	REF	Corresponds to:	Ref document number: 54637 Country of ref document: AT Date of ref document: 19900815 Kind code of ref document: T
1990-08-23	REF	Corresponds to:	Ref document number: 3763808 Country of ref document: DE Date of ref document: 19900823
1990-10-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: ES 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: 19901029
1990-11-09	ET	Fr: translation filed
1991-01-16	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1991-05-23	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1991-05-23	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1991-07-10	26N	No opposition filed
1993-10-11	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19931011 Year of fee payment: 7
1993-10-25	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19931025 Year of fee payment: 7
1994-01-25	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19940125 Year of fee payment: 7
1994-01-27	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19940127 Year of fee payment: 7
1994-11-05	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19941105
1994-11-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Effective date: 19941130 Ref country code: CH Effective date: 19941130
1995-07-05	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19941105
1995-07-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19950731
1995-07-31	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1995-08-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19950801
1995-09-29	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

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