US2894658A - Inflator with water soluble release - Google Patents

Inflator with water soluble release Download PDF

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Publication number
US2894658A
US2894658A US620532A US62053256A US2894658A US 2894658 A US2894658 A US 2894658A US 620532 A US620532 A US 620532A US 62053256 A US62053256 A US 62053256A US 2894658 A US2894658 A US 2894658A
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Prior art keywords
inflator
pin
striker
water
life
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US620532A
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Spidy Alexander Ronald
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Specialties Development Corp
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Specialties Development Corp
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    • 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
    • B63C9/24—Arrangements of inflating valves or of controls thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/11—Tripping mechanism

Definitions

  • the present invention relates to apparatus for inflating life-jackets and in particular relates to an inflator for an inflatable life-jacket, which is operated automatically upon being immersed in water. It is a principal object of the invention to provide an inflator which is automatically operated with certainty and rapidity upon immersion in water and such an inflator finds great practical application for use in life-jackets worn by persons engaged in hazardous operations in the proximity of water. In such cases the wearer of the life-jacket is likely to be either injured or unconscious when falling into the water, so that an inflator which operates very rapidly and automatically may well avert the risk of drowning.
  • an inflator comprises a body having an outlet gas passage adapted to be put into communication with the interior of a life-jacket, a gas capsule secured to or integral with the body and having a sealed mouth located within the body, a striker pin or the like adapted to open the capsule under spring pressure, and a soluble plug located in the body between an abutment formed in the body and an abutment on the striker pin or the like, the soluble plug being trapped between said abutments to prevent movement of the striker pin in the capsule opening direction.
  • the soluble plug is preferably put in a position in the body such that it is immediately contacted by water on immersion, but is shielded from accidental contact by raindrops.
  • the material selected from the soluble plug is one which dissolves very rapidly on immersion in Water, whilst not being deliquescent.
  • the soluble material of the plug is preferably also capable of withstanding considerable pressure so that it does not crumble under the influence of the spring which loads the plunger pin, and it is found that a salt such as magnesium sulphate is suitable for this purpose.
  • Figure 1 is a longitudinal section.
  • Figure 2 is a plan view.
  • the body 1 of the inflator is internally screw threaded at one end to provide an attachment for a sealed gas capsule 2.
  • the top end of the gas capsule 2 is sealed by a diaphragm member 3 held in an internally screw threaded member 4, which is itself screwed into the body 1.
  • the member 4 is apertured centrally to permit the passage of the point of a striker pin 5, which is guided in an O-ring 6 held in a recess in the body by a retaining washer 7, so that on rupture of the diaphragm member 3, substantial quantities of gas cannot pass round the shank of the striker pin 5.
  • this chamber can be brought into communication with the interior of a life-jacket through a connector 8 which carries a coupling nut 9 and which is ice screw threaded for engagement with a screw threaded coupling on the life-jacket.
  • the stem of the striker pin 5 has a portion 10 of increased thickness and a compression spring 11 is located about the portion 10, the spring 11 bearing at its forward end against a shoulder 12 formed on the striker and at its rear end against a shoulder 14 formed on the body. The striker is thus urged towards the sealed top end of the gas capsule by the spring.
  • the opposite face of the shoulder 14 acts as an abutment for a soluble plug 15, which is of annular shape.
  • the tail end 16 of the striker pin which is of reduced diameter, passes through the central aperture in the plug.
  • the tail end of the striker is screw threaded and onto this portion a nut 17, which is adapted to be screwed down into contact with the soluble plug, is fitted so that in eflect the soluble plug 15 acts as a spacer between the nut 17 and the shoulder 14.
  • the side wall of the body is formed with large diameter apertures 18 at the point where the soluble plug is located, so as to permit water to enter the body very rapidly.
  • the nut 17 on the striker tail 16 is preferably formed with one or more grooves 19 which register with corresponding apertures in the wall of the body 1 to permit a safety-pin 20 to be inserted therethrough to prevent longitudinal movement of the striker.
  • the safetypin is used only when the life-jacket is not in use.
  • the purpose of the safety-pin 20 is to take the strain of the soluble plug 15 and the safety-pin is removed when the life-jacket is put on.
  • the soluble plug 15 is rapidly dissolved away and then the striker pin 5 is free to move forward until the nut 17 contacts the shoulder 14.
  • the length of the soluble plug 15 is therefore made greater than the distance that the striker pin 5 needs to travel to rupture the diaphragm 3 at the top end of the gas capsule 2.
  • the body is preferably made in two halves which are screw threaded together, at 21 and locked by a body locking screw 22.
  • the gas capsule is carried outside the life-jacket.
  • the gas capsule is located inside the lifejacket, whilst the soluble plug is located outside the lifejacket.
  • the bottom end of the body is screw threaded on its outer surface to provide a means of securing it in the wall of an inflatable life-jacket.
  • the gas passage leading from the enclosed chamber above the top of the gas capsule is now drilled out, so as to provide an outlet in close proximity to the neck of the gas capsule, which lies inside the inflatable life-jacket.
  • An inflator comprising in combination a body member providing a chamber having an inlet opening, an outlet gas passage adapted to be connected to an inflatable device, and an opening for a pin opposite said inlet opening; means adjacent said inlet opening for securing the neck of a gas capsule provided with a rupturable diaphragm; a second body member providing a chamber therein secured to said first body member adjacent said pin opening; a striker pin in said second chamber extending through said pin opening into said first chamber; means providing a seal between said pin and said pin opening; an annular shoulder in said chamber between the ends of said pin; a spring bearing against said shoulder to urge said striker pin in a direction to rupture the diaphragm; a cylindrical abutment on said striker pin on the opposite side of said shoulder; and a water soluble plug positioned between said abutment and said shoulder for restraining said striker pin from movement in the diaphragm rupturing direction, said cylindrical abutment having a transverse groove on the outer sur- 3

Description

J y 1959 A. R. SPIDY INFLATOR WITH WATER SOLUBLE RELEASE Filed Nov. 5. 195a vmm vm wum Uflited States Patent INFLATOR WITH WATER SOLUBLE RELEASE Alexander Ronald Spidy, Datchet, Bucks, England, assignor to Specialties Development Corporation, Belleville, N.J., a corporation of New Jersey Application November 5, 1956, Serial No. 620,532
1 Claim. (Cl. 222-) The present invention relates to apparatus for inflating life-jackets and in particular relates to an inflator for an inflatable life-jacket, which is operated automatically upon being immersed in water. It is a principal object of the invention to provide an inflator which is automatically operated with certainty and rapidity upon immersion in water and such an inflator finds great practical application for use in life-jackets worn by persons engaged in hazardous operations in the proximity of water. In such cases the wearer of the life-jacket is likely to be either injured or unconscious when falling into the water, so that an inflator which operates very rapidly and automatically may well avert the risk of drowning.
According to the present invention an inflator comprises a body having an outlet gas passage adapted to be put into communication with the interior of a life-jacket, a gas capsule secured to or integral with the body and having a sealed mouth located within the body, a striker pin or the like adapted to open the capsule under spring pressure, and a soluble plug located in the body between an abutment formed in the body and an abutment on the striker pin or the like, the soluble plug being trapped between said abutments to prevent movement of the striker pin in the capsule opening direction. The soluble plug is preferably put in a position in the body such that it is immediately contacted by water on immersion, but is shielded from accidental contact by raindrops. The material selected from the soluble plug is one which dissolves very rapidly on immersion in Water, whilst not being deliquescent. The soluble material of the plug is preferably also capable of withstanding considerable pressure so that it does not crumble under the influence of the spring which loads the plunger pin, and it is found that a salt such as magnesium sulphate is suitable for this purpose.
One form of construction made in accordance with the invention is shown in the accompanying drawings, wherein:
Figure 1 is a longitudinal section.
Figure 2 is a plan view.
In the form of construction shown the body 1 of the inflator is internally screw threaded at one end to provide an attachment for a sealed gas capsule 2. The top end of the gas capsule 2 is sealed by a diaphragm member 3 held in an internally screw threaded member 4, which is itself screwed into the body 1. The member 4 is apertured centrally to permit the passage of the point of a striker pin 5, which is guided in an O-ring 6 held in a recess in the body by a retaining washer 7, so that on rupture of the diaphragm member 3, substantial quantities of gas cannot pass round the shank of the striker pin 5.
There is thus formed an enclosed chamber between the O-ring 6 and the top of the gas capsule 2. In the present example this chamber can be brought into communication with the interior of a life-jacket through a connector 8 which carries a coupling nut 9 and which is ice screw threaded for engagement with a screw threaded coupling on the life-jacket. Outside the enclosed gas chamber, the stem of the striker pin 5 has a portion 10 of increased thickness and a compression spring 11 is located about the portion 10, the spring 11 bearing at its forward end against a shoulder 12 formed on the striker and at its rear end against a shoulder 14 formed on the body. The striker is thus urged towards the sealed top end of the gas capsule by the spring. The opposite face of the shoulder 14 acts as an abutment for a soluble plug 15, which is of annular shape. The tail end 16 of the striker pin, which is of reduced diameter, passes through the central aperture in the plug. The tail end of the striker is screw threaded and onto this portion a nut 17, which is adapted to be screwed down into contact with the soluble plug, is fitted so that in eflect the soluble plug 15 acts as a spacer between the nut 17 and the shoulder 14. The side wall of the body is formed with large diameter apertures 18 at the point where the soluble plug is located, so as to permit water to enter the body very rapidly. The nut 17 on the striker tail 16 is preferably formed with one or more grooves 19 which register with corresponding apertures in the wall of the body 1 to permit a safety-pin 20 to be inserted therethrough to prevent longitudinal movement of the striker. The safetypin is used only when the life-jacket is not in use. The purpose of the safety-pin 20 is to take the strain of the soluble plug 15 and the safety-pin is removed when the life-jacket is put on.
In the event of the inflator being submerged in water, the soluble plug 15 is rapidly dissolved away and then the striker pin 5 is free to move forward until the nut 17 contacts the shoulder 14. The length of the soluble plug 15 is therefore made greater than the distance that the striker pin 5 needs to travel to rupture the diaphragm 3 at the top end of the gas capsule 2.
To permit easy assembly of the device, the body is preferably made in two halves which are screw threaded together, at 21 and locked by a body locking screw 22.
In the form of inflator described above, the gas capsule is carried outside the life-jacket. In a modified construction the gas capsule is located inside the lifejacket, whilst the soluble plug is located outside the lifejacket. In this construction the bottom end of the body is screw threaded on its outer surface to provide a means of securing it in the wall of an inflatable life-jacket. The gas passage leading from the enclosed chamber above the top of the gas capsule is now drilled out, so as to provide an outlet in close proximity to the neck of the gas capsule, which lies inside the inflatable life-jacket.
I claim:
An inflator comprising in combination a body member providing a chamber having an inlet opening, an outlet gas passage adapted to be connected to an inflatable device, and an opening for a pin opposite said inlet opening; means adjacent said inlet opening for securing the neck of a gas capsule provided with a rupturable diaphragm; a second body member providing a chamber therein secured to said first body member adjacent said pin opening; a striker pin in said second chamber extending through said pin opening into said first chamber; means providing a seal between said pin and said pin opening; an annular shoulder in said chamber between the ends of said pin; a spring bearing against said shoulder to urge said striker pin in a direction to rupture the diaphragm; a cylindrical abutment on said striker pin on the opposite side of said shoulder; and a water soluble plug positioned between said abutment and said shoulder for restraining said striker pin from movement in the diaphragm rupturing direction, said cylindrical abutment having a transverse groove on the outer sur- 3 face thereof and said second body member having a pair of apertures aligned with said groove for receiving a locking pin and having an aperture adjacent said soluble plug for permitting access of Water to said soluble plug upon immersion of said member in Water.
References Cited in the file of this patent UNITED STATES PATENTS 1,117,639 Cooey Nov. 17, 1914 41 Muller Feb. 3, 1920 Barker Feb. 1, 1921 Seemann Apr. 13, 1954 FOREIGN PATENTS Great Britain Oct. 7, 1920
US620532A 1956-11-05 1956-11-05 Inflator with water soluble release Expired - Lifetime US2894658A (en)

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Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071787A (en) * 1959-12-15 1963-01-08 Henry R Burker Inflatable float device for sinkable objects
US3080582A (en) * 1959-11-30 1963-03-12 Kidde Walter Co Ltd Inflatable dinghies
US3092853A (en) * 1958-09-24 1963-06-11 John R Owen Buoyancy units
US3132626A (en) * 1963-04-09 1964-05-12 Theodore C Reid Distress signal device
US3198020A (en) * 1962-05-25 1965-08-03 Kidde Walter Co Ltd Inflation apparatus
US3443546A (en) * 1967-09-05 1969-05-13 Neal B Couey Car theft prevention apparatus
US3494506A (en) * 1967-12-05 1970-02-10 Tadao Fujimoto Automatic gas filling device of an inflatable lifesaving equipment
US3809288A (en) * 1973-03-26 1974-05-07 G Mackal Inflation manifold
US3934292A (en) * 1974-04-03 1976-01-27 Boc Limited Triggering devices
US3997079A (en) * 1974-04-17 1976-12-14 Wolfgang Niemann Automatic inflating device for lifesaving devices
US4563156A (en) * 1982-06-02 1986-01-07 Bissig Josef E Rescue apparatus
US4627823A (en) * 1984-07-23 1986-12-09 Glenn Mackal Safety latched automatic actuator and throwable personal flotation assembly
US4836128A (en) * 1985-04-12 1989-06-06 Walker Kevin J Identification means
US4927057A (en) * 1989-05-30 1990-05-22 Inflation Technologies & Innovation Automatic inflator for inflatable articles
US4972971A (en) * 1989-06-29 1990-11-27 Inflation Technologies & Innovation Automatic inflator for inflatable articles
US5035345A (en) * 1990-05-07 1991-07-30 Apoc, Inc. Automatic inflator for inflatable articles
DE9112117U1 (en) * 1991-09-28 1991-11-21 Bernhardt Apparatebau Gmbh + Co., 2000 Wedel, De
US5076468A (en) * 1990-02-28 1991-12-31 Halkey-Roberts Corporation Squib inflator adaptor
US5370567A (en) * 1991-09-28 1994-12-06 Bernhardt Apparatebau Gmbh U. Co. Device for the inflation of more particularly a container or a floating body of a piece of lifesaving equipment
US5562233A (en) * 1992-08-13 1996-10-08 Bernhardt Apparatebau Gmbh U. Co. Indicator for a device for the inflation of a container or a floating body of an item of lifesaving equipment
US5746633A (en) * 1996-01-22 1998-05-05 Jeffrey; Lawrence W. Personal flotation device
US20040124209A1 (en) * 2001-09-07 2004-07-01 Mackal Glenn H. Bobbin for automatic inflator
US20050245149A1 (en) * 2004-04-29 2005-11-03 Irvin Aerospace Canada Limited Water activated inflator for inflatable device and method of air deployment
US7004807B1 (en) 2004-08-26 2006-02-28 Summers Michael S Throwable emergency response automatic inflatable personal flotation device
US20060148346A1 (en) * 2004-08-26 2006-07-06 Summers Michael S Throwable emergency response automatic inflatable personal flotation device
US20070163431A1 (en) * 2004-08-19 2007-07-19 Mohar Robert C Vehicle interdiction device and method
US20080000926A1 (en) * 2006-06-02 2008-01-03 Hudson Wang Manual gas inflator
US20090098784A1 (en) * 2004-04-29 2009-04-16 Irvin Aerospace Canada Limited Water activated inflator for inflatable device and method of air deployment
US20120012190A1 (en) * 2010-07-13 2012-01-19 Barber Gerald L Valve system for releasing pressurized fluid
US20130313282A1 (en) * 2010-11-11 2013-11-28 United Moulders Limited Inflation Device Mechanism
WO2016064762A1 (en) 2014-10-19 2016-04-28 Halkey-Roberts Corporation Inflator with high flow rate
US20170029081A1 (en) * 2015-03-17 2017-02-02 Bogdan Michalski Modular electronic activation system
CN108394533A (en) * 2018-04-23 2018-08-14 倪鸿宁 A kind of portable intelligent life belt
US20230018323A1 (en) * 2021-07-07 2023-01-19 Alan Rex Norris Fishing rod and reel recovery device and recovery system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1117639A (en) * 1914-03-28 1914-11-17 Herbert W Cooey Portable life-buoy.
US1329990A (en) * 1917-10-10 1920-02-03 Muller Jean Pierre Automatic life-saving apparatus
GB151754A (en) * 1919-07-09 1920-10-07 Jean Pierre Muller An automatic actuating apparatus for inflating life-belts and operating valves, fireextinguishers, alarms and other apparatus
US1367225A (en) * 1918-04-17 1921-02-01 Cuthbert W Wright Life-belt
US2675143A (en) * 1951-01-11 1954-04-13 Jr William H Seemann Life preserver inflating apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1117639A (en) * 1914-03-28 1914-11-17 Herbert W Cooey Portable life-buoy.
US1329990A (en) * 1917-10-10 1920-02-03 Muller Jean Pierre Automatic life-saving apparatus
US1367225A (en) * 1918-04-17 1921-02-01 Cuthbert W Wright Life-belt
GB151754A (en) * 1919-07-09 1920-10-07 Jean Pierre Muller An automatic actuating apparatus for inflating life-belts and operating valves, fireextinguishers, alarms and other apparatus
US2675143A (en) * 1951-01-11 1954-04-13 Jr William H Seemann Life preserver inflating apparatus

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092853A (en) * 1958-09-24 1963-06-11 John R Owen Buoyancy units
US3080582A (en) * 1959-11-30 1963-03-12 Kidde Walter Co Ltd Inflatable dinghies
US3071787A (en) * 1959-12-15 1963-01-08 Henry R Burker Inflatable float device for sinkable objects
US3198020A (en) * 1962-05-25 1965-08-03 Kidde Walter Co Ltd Inflation apparatus
US3132626A (en) * 1963-04-09 1964-05-12 Theodore C Reid Distress signal device
US3443546A (en) * 1967-09-05 1969-05-13 Neal B Couey Car theft prevention apparatus
US3494506A (en) * 1967-12-05 1970-02-10 Tadao Fujimoto Automatic gas filling device of an inflatable lifesaving equipment
US3809288A (en) * 1973-03-26 1974-05-07 G Mackal Inflation manifold
US3934292A (en) * 1974-04-03 1976-01-27 Boc Limited Triggering devices
US3997079A (en) * 1974-04-17 1976-12-14 Wolfgang Niemann Automatic inflating device for lifesaving devices
US4563156A (en) * 1982-06-02 1986-01-07 Bissig Josef E Rescue apparatus
US4627823A (en) * 1984-07-23 1986-12-09 Glenn Mackal Safety latched automatic actuator and throwable personal flotation assembly
US4836128A (en) * 1985-04-12 1989-06-06 Walker Kevin J Identification means
US4927057A (en) * 1989-05-30 1990-05-22 Inflation Technologies & Innovation Automatic inflator for inflatable articles
US4972971A (en) * 1989-06-29 1990-11-27 Inflation Technologies & Innovation Automatic inflator for inflatable articles
US5076468A (en) * 1990-02-28 1991-12-31 Halkey-Roberts Corporation Squib inflator adaptor
US5035345A (en) * 1990-05-07 1991-07-30 Apoc, Inc. Automatic inflator for inflatable articles
DE9112117U1 (en) * 1991-09-28 1991-11-21 Bernhardt Apparatebau Gmbh + Co., 2000 Wedel, De
US5370567A (en) * 1991-09-28 1994-12-06 Bernhardt Apparatebau Gmbh U. Co. Device for the inflation of more particularly a container or a floating body of a piece of lifesaving equipment
US5562233A (en) * 1992-08-13 1996-10-08 Bernhardt Apparatebau Gmbh U. Co. Indicator for a device for the inflation of a container or a floating body of an item of lifesaving equipment
US5746633A (en) * 1996-01-22 1998-05-05 Jeffrey; Lawrence W. Personal flotation device
US20040124209A1 (en) * 2001-09-07 2004-07-01 Mackal Glenn H. Bobbin for automatic inflator
US7572161B2 (en) * 2001-09-07 2009-08-11 Halkey-Roberts Corporation Bobbin for automatic inflator
US20050245149A1 (en) * 2004-04-29 2005-11-03 Irvin Aerospace Canada Limited Water activated inflator for inflatable device and method of air deployment
US20090098784A1 (en) * 2004-04-29 2009-04-16 Irvin Aerospace Canada Limited Water activated inflator for inflatable device and method of air deployment
US7819714B2 (en) 2004-04-29 2010-10-26 Irvin Aerospace Canada Limited Water activated inflator for inflatable device and method of air deployment
US20070163431A1 (en) * 2004-08-19 2007-07-19 Mohar Robert C Vehicle interdiction device and method
US7246613B1 (en) 2004-08-19 2007-07-24 Mohar Robert C Vehicle interdiction device and method
US20060046588A1 (en) * 2004-08-26 2006-03-02 Summers Michael S Throwable emergency response automatic inflatable personal flotation device
US20060148346A1 (en) * 2004-08-26 2006-07-06 Summers Michael S Throwable emergency response automatic inflatable personal flotation device
US7128629B2 (en) 2004-08-26 2006-10-31 Summers Michael S Throwable emergency response automatic inflatable personal flotation device
US7004807B1 (en) 2004-08-26 2006-02-28 Summers Michael S Throwable emergency response automatic inflatable personal flotation device
US20080000926A1 (en) * 2006-06-02 2008-01-03 Hudson Wang Manual gas inflator
US7854347B2 (en) * 2006-06-02 2010-12-21 Hudson Wang Manual gas inflator
US20120012190A1 (en) * 2010-07-13 2012-01-19 Barber Gerald L Valve system for releasing pressurized fluid
US20130313282A1 (en) * 2010-11-11 2013-11-28 United Moulders Limited Inflation Device Mechanism
US9156530B2 (en) * 2010-11-11 2015-10-13 Michael E. Best Inflation device mechanism
WO2016064762A1 (en) 2014-10-19 2016-04-28 Halkey-Roberts Corporation Inflator with high flow rate
US20170108315A1 (en) * 2014-10-19 2017-04-20 Halkey-Roberts Corporation Inflator with high flow rate
EP3206945A4 (en) * 2014-10-19 2018-05-09 Glenn H. Mackal Inflator with high flow rate
US10036617B2 (en) * 2014-10-19 2018-07-31 Halkey-Roberts Corporation Inflator with high flow rate
US20170029081A1 (en) * 2015-03-17 2017-02-02 Bogdan Michalski Modular electronic activation system
US10011332B2 (en) * 2015-03-17 2018-07-03 Bogdan Michalski Modular electronic activation system
CN108394533A (en) * 2018-04-23 2018-08-14 倪鸿宁 A kind of portable intelligent life belt
US20230018323A1 (en) * 2021-07-07 2023-01-19 Alan Rex Norris Fishing rod and reel recovery device and recovery system

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