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Publication numberUS3219034 A
Publication typeGrant
Publication dateNov 23, 1965
Filing dateJul 31, 1962
Priority dateJul 31, 1962
Publication numberUS 3219034 A, US 3219034A, US-A-3219034, US3219034 A, US3219034A
InventorsLadimur Kalenik
Original AssigneeLadimur Kalenik
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Underwater breathing apparatus
US 3219034 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Nov. 23, 1965 L. KALENIK UNDERWATER BREATHING APPARATUS Filed July 31, 1962 Fig. I.


INVENTOR. LADIMUR KALENIK hisXTOl-TNEY United States Patent Filed July 31, 1962, Ser. No. 213,688

1 Claim. (Cl. 128-147) This invention relates to underwater breathing apparatus and, more particularly, to an underwater breathing device equipped with two mouthpieces fed by a single tank of compressed air so that in case of failure of the breathing equipment of one of a pair or group of underwater divers, he may share one of the monthpieces of the equipment of another diver embodying the present invention.

In the past, when an underwater diver was faced with the emergency of faulty underwater breathing apparatus, he would attempt to share the mouthpiece of another divers underwater breathing apparatus by taking turns in the use of such mouthpiece. This has not been at all satisfactory since either of the underwater divers tends to become panicky while lending the mouthpiece to the other diver from fear that the other diver is using the mouthpiece for a longer time than his proper share. Often times this has resulted in actual underwater combat between the two divers, each feeling that he must wrest possession of the mouthpiece from the other in order to survive.

An object of the present invention is to overcome the above mentioned disadvantage of conventional underwater breathing apparatus by providing an auxiliary mouthpiece which may be used by another underwater diver whose underwater breathing equipment has become faulty, but without the necessity of sharing the conventional mouthpiece.

A more specific object of the invention is to provide, in an underwater breathing device comprising a single tank of compressed air and a regulator, a pair of mouthpieces, each having an independent respiratory system so that when a second diver uses the auxiliary mouthpiece, the difference in rhythm of breathing between the two divers will not cause interference of breathing.

A still further object of the invention is to provide, in an underwater breathing device, a dual construction of respiratory chamber, so that breathing through a mouthpiece connected to one chamber by one diver will have no influence on breathing through the mouthpiece connected to the other chamber by the other diver while both are breathing out of synchronism.

Other objects and advantages of the invention will become apparent from a study of the following description taken with the accompanying drawings wherein:

FIG. 1 is a fragmentary, front elevational view showing a pressure regulator and portions of the air line and air tank;

FIG. 2 shows the invention as applied to a two hose regulator system, wherein the respiratory valve chamber is subdivided in half by a central partition, and a mouthpiece is attached to each half chamber, so as to enable independent breathing by two separate underwater divers using the respective mouthpieces; and

FIG. 3 is a cross-sectional view taken along line IIIIII of FIG. 2.

Referring more particularly to FIG. 1, numeral 1 denotes a tank containing compressed air, a regulator valve 2 connected thereto for regulating the withdrawal of air from the tank and an air hose 16 having one end connected to the regulator and the other end connected as shown in FIG. 2 for inhaling air from the tank through one part of the air hose and for exhaling air from the lungs through another part of the air hose 18 connected as shown in FIG. 2.

FIG. 2 shows a second or auxiliary mouthpiece in a two hose regulator valve system, that is, one which the opposite ends of hoses 16 and 18 are connected to a conventional pressure reducing valve 2 such as described in Kimes Patent 3,018,790 and Mitchell Patent 3,028,859. In such patents, however, the ends of hoses 16 and 18 are attached to a single respiratory chamber having a single system of valves for supplying a single mouthpiece.

In accordance with the present invention, however, a central partition 19 is added which subdivides the valve 4 chamber into two completely separate chambers, each provided with separate valves, such as 22, 23 mounted on seats 20, and 21, respectively, in the top chamber and valves 22a, 23a in the bottom chamber mounted on seats 20a and 2117, respectively. To the upper half chamber there is connected a regular mouthpiece 17, and to the lower half chamber there is attached, by means of a coupling 24, a flexible hose 25 having its free end connected to a second or auxiliary mouthpiece 26.

Assume that hose 16 is the inlet hose attached to one end of the pressure reducing regulator, and that hose 18 is the outlet hose which is connected to the other end of the regulator. In operation, the underwater diver using mouthpiece 17 breathes in fresh air from hose 16 through inhalation valve 22 at which time, exhalation valve 23 is drawn in to the closed position. As the diver exhales, valve 22 will be forced closed and valve 23 will be flexed open so that air will be exhaled through hose 18 and into the regulator. Similarly, the second diver using mouthpiece 26, while inhaling will draw valve 22a open and will draw valve 23a closed, and while exhaling will force valve 22a closed and will flex 23a to the open position so as to exhaust air through hose 18, thence into the regulator (not shown). Thus, each diver can inhale and exhale as he pleases without causing interference to breathing by the other diver, who would normally inhale and exhale out of synchronism with the first diver.

Thus it will be seen that I have provided an efficient underwater breathing apparatus which provides, in addition to the regular mouthpiece, a second mouthpiece which may be used during an emergency by another diver and which employs an altogether different respiratory system so that breathing by one diver will have no efiect on the breathing of the other diver; furthermore, I have provided an auxiliary mouthpiece and valve assembly which may be built originally as an integral, two mouthpiece unit, having separate respiratory systems.

While I have illustrated and described a single embodiment of my invention, it will be understood that this is by way of illustration only, and that various changes and modifications may be made within the contemplation of my invention and within the scope of the following claim.

I claim:

In an underwater breathing apparatus including two hoses and a regulator connected to one end of the respective hoses, a chamber connected to the other end thereof, a tank of high pressure air connected to said regulator, a partition separating said chamber into two separate half chambers, an inlet valve and an outlet valve connected in each of said half chambers, a mouthpiece connected to one of said half chambers between said inlet and outlet valves thereof, and a flexible hose and mouthpiece connected to the other half chamber between its inlet and outlet valve, whereby two persons may 10 breathe independently without interference through said mouthpieces.

4 References Cited by the Examiner UNITED STATES PATENTS 764,709 7/1904 Chapin et a1 128142 2,893,386 7/1959 Sajeck 128142 2,894,506 7/1959 Rose 128-142 2,931,355 4/1960 Miller et a1. 128142 FOREIGN PATENTS 793,452 4/ 1958 Great Britain.

RICHARD A. GAUDET, Primary Examiner.


Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US764709 *Aug 13, 1903Jul 12, 1904Charles Edgar ChapinRespiratory apparatus for firemen or others.
US2893386 *Apr 4, 1957Jul 7, 1959George SajeckGas demand equipment
US2894506 *Apr 3, 1957Jul 14, 1959Rose Dudley BUnderwater breathing apparatus
US2931355 *Jun 24, 1957Apr 5, 1960Scott Aviation CorpSystem for automatically presenting a breathing mask to a person in an emergency
GB793452A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3973562 *Jul 29, 1974Aug 10, 1976David Guild JanssonMulti-user extended operation respirator
US4840199 *Nov 3, 1987Jun 20, 1989Brunt Jr Charles DRegulator safety valve
US6398266Sep 22, 1999Jun 4, 2002Ballard Medical ProductsCollapse resistant popoid connector
USD466607Aug 27, 2001Dec 3, 2002Kimberly-Clark Worldwide, Inc.Flexible connector
USD473941Aug 27, 2001Apr 29, 2003Kimberly-Clark Worldwide, Inc.Flexible connecting device
USD476731Aug 27, 2001Jul 1, 2003Kimberly-Clark Worldwide, Inc.Bendable connector
USD486909Aug 27, 2001Feb 17, 2004Kimberly-Clark Worldwide, Inc.Bendable connecting device
EP0089285A2 *Mar 11, 1983Sep 21, 1983Litton Systems, Inc.Self-contained breathing apparatus with provision for shared use
EP0278598A1 *Jan 15, 1988Aug 17, 1988Apeks Marine Equipment LimitedScuba breathing apparatus
EP0318157A1 *Oct 28, 1988May 31, 1989A P VALVES a partnership comprising David John Parker Angela Margaret Parker and Martin John ParkerAn automatic delivery valve
U.S. Classification128/205.22, 128/204.18, 128/202.27, D24/110.5, 128/205.24
International ClassificationB63C11/02, B63C11/22
Cooperative ClassificationB63C11/2227
European ClassificationB63C11/22B