US3651988A - Explosively operated gas supplying apparatus - Google Patents

Explosively operated gas supplying apparatus Download PDF

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Publication number
US3651988A
US3651988A US66014A US3651988DA US3651988A US 3651988 A US3651988 A US 3651988A US 66014 A US66014 A US 66014A US 3651988D A US3651988D A US 3651988DA US 3651988 A US3651988 A US 3651988A
Authority
US
United States
Prior art keywords
piston
container
outlet
explosive charge
section
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
US66014A
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English (en)
Inventor
John Cirillo
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.)
Kidde Inc
Kidde Technologies Inc
Original Assignee
Walter Kidde and Co Inc
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 Walter Kidde and Co Inc filed Critical Walter Kidde and Co Inc
Application granted granted Critical
Publication of US3651988A publication Critical patent/US3651988A/en
Assigned to WALTER KIDDE AEROSPACE, INC., 2500 AIRPORT DRIVE, WILSON, NC 27893, A DE CORP. reassignment WALTER KIDDE AEROSPACE, INC., 2500 AIRPORT DRIVE, WILSON, NC 27893, A DE CORP. NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE: APRIL 2, 1988 Assignors: KIDDE, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/268—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas

Definitions

  • ABSTRACT [22] Filed: Aug. 21, '1970 Apparatus for supplying pressurized gas including a container having an outlet opening and an open ended tubular section [21 1 Appl' providing a second opening aligned with the outlet, and a valving device for sealing both openings.
  • the valving device com- U.S. r ....222/3 p ises a piston is in sealing relationship [51] Int.
  • the present invention relates to vehicle safety apparatus, and, more particularly, to apparatus for protecting an occupant of a vehicle during a collision by inflating a bag to restrain and cushion the occupant.
  • a system of this type must operate very quickly.
  • the bag must be inflated in milliseconds after a sudden impact if the occupant is to be protected.
  • the systems which have been previously proposed have employed electrically detonated explosive charges for rapidly releasing the stored gas.
  • the explosive charge is connected to an electrical circuit which includes an inertia responsive electrical switch that closes in response to a predetermined rate of deceleration.
  • the charge is used to either shatter the gas container or to shatter a sea] at the outlet of the container. In either case there is unimpeded sound propogation in the direction of the passengers within the vehicle and an explosive charge ofsubstantial power is required.
  • Another object is to provide such apparatus which requires an explosive charge of minimum size.
  • Another object is to provide such apparatus for use in a vehicle wherein the propogation of the explosive report toward the passengers is impeded.
  • valve mechanism is pressure balanced so that a small pressure bias holds the valve in the closed position and a small explosive charge is provided to overcome this pressure bias and open the valve.
  • FIGURE of the drawing is a sectional view of apparatus according to the present invention.
  • apparatus for supplying pressurized gas which includes a container and an explosively actuated valve member 1 1 within the container.
  • the container is generally cylindrical and is provided with a neck 12 at one end defining an outlet opening 14 and a second neck 15 at the other end.
  • the neck 15 is provided with external threads and has a smaller inner diameter than the neck 12.
  • a generally tubular extension member 16 is threaded onto the neck 15 and has an inner diameter larger than that of the neck.
  • the valve member 11 includes a piston 19 slideably positioned in the outlet 14, a piston member 20 slideably positioned within the neck 15 and the extension member 16, and a rod 21 rigidly connecting the piston 19 and the piston member 20.v
  • the piston 19 is sealed to the outlet by an O-ring seal 22, and a snap ring 24 is positioned in a groove within the mouth of the outlet to hold the valve member against the pressure within the container.
  • the piston member 20 has an inner section 25 which is sealed to the inner surface of the neck 15 by an O-ring seal 26.
  • Piston 20 also has an outer section 27 which seals the inner surface of the extension member 16 by an O-ring seal 29.
  • the section 27 is provided with an annular piston surface 30 and carries an electrically detonated explosive squib 31 which is threaded into an axial bore provided therein.
  • a lateral passageway 32 connects the inner end of the squib 31 with the piston surface 30.
  • the tubular extension member 16 is provided with a flange 34 which extends radially outwardly for mounting the unit and is provided with a flange 35 extending radially inwardly for limiting the motion of the valve member 1 l.
  • the piston section 25 is of smaller diameter than that of piston section 19 so that the pressure within the container biases the valve member 11 against the snap ring 24 and maintains the container in the sealed condition.
  • the container 10 is mounted in front of a passenger with the tubular extension member pointing in the direction of travel of the vehicle and preferably furthest from the vehicle occupant.
  • An inflatable bag (not shown) is attached to the neck 12 to be deployed toward the passenger upon inflation.
  • the squib 31 is electrically connected to an inertia sensing device.
  • the inertia sensing device connects the squib 31 to a source of electrical power.
  • the squib detonates generating high pressure gas which flows through the passageway 32 and acts upon the piston surface 30 driving the valve member 11 to the left.
  • the piston 19 moves out of the outlet and the container l0 discharges its gas into the bag to inflate it.
  • the present invention provides apparatus, of the explosively operated valve type for supplying pressurized gas, which upon operation produces minimum sound levels.
  • Apparatus for rapidly supplying a fluid medium under pressure comprising in combination a container of fluid medium under pressure having an outlet opening, a valve having a first piston sealing said outlet opening and a second piston connected to said first piston, both of said first and second pistons being in communication with said pressurized fluid medium, said first piston having a larger effective area than said second piston to pressure bias said valve toward said outlet, means for limiting the movement of said valve member toward said outlet, and means including an explosive charge for overcoming said pressure bias to open said outlet and discharge the fluid medium from said container.
  • Apparatus as in claim 1 further comprising a substantially straight member for connecting said first and second pistons.
  • said second piston includes a first piston section acted upon by the fluid medium within said container and a second piston section sealed from .said first piston section, said explosive charge being positioned to act on said second piston section of said second piston to move said valve member in a direction to move said first piston out of said outlet opening in towards the container in- 7t
  • said explosivecharge is carried on said second piston and said second piston is pro- A vided with passageway means extending from said charge to said second piston section.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
US66014A 1970-08-21 1970-08-21 Explosively operated gas supplying apparatus Expired - Lifetime US3651988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6601470A 1970-08-21 1970-08-21

Publications (1)

Publication Number Publication Date
US3651988A true US3651988A (en) 1972-03-28

Family

ID=22066707

Family Applications (1)

Application Number Title Priority Date Filing Date
US66014A Expired - Lifetime US3651988A (en) 1970-08-21 1970-08-21 Explosively operated gas supplying apparatus

Country Status (3)

Country Link
US (1) US3651988A (OSRAM)
DE (1) DE2140702A1 (OSRAM)
FR (1) FR2104587A5 (OSRAM)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797853A (en) * 1971-04-17 1974-03-19 Dynamit Nobel Ag Safety device for vehicles
US3856181A (en) * 1973-06-25 1974-12-24 Gen Motors Corp Inflator
US3915339A (en) * 1974-07-08 1975-10-28 Matson C G Quick-release aerator for introducing high pressure air into a container to facilitate dispensing
US20030132241A1 (en) * 2002-01-16 2003-07-17 Global Manufacturing, Inc. Quick release trigger valve and blast aerator
US11345538B2 (en) * 2017-06-20 2022-05-31 Thejo Engineering Ltd. Air blaster

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967490A (en) * 1975-06-27 1976-07-06 International Telephone And Telegraph Corporation Vibration densitometer
FR2602566B1 (fr) * 1986-08-08 1988-11-10 Alkan R & Cie Dispositif de decharge rapide a grand debit de fluide, et son application a une bouteille de gaz comprime

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197234A (en) * 1963-06-10 1965-07-27 Harry A Bertrand Safety device for vehicle passengers
US3209937A (en) * 1960-10-07 1965-10-05 Graviner Manufacturing Co Electrical actuator for opening the outlet of a pressure vessel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209937A (en) * 1960-10-07 1965-10-05 Graviner Manufacturing Co Electrical actuator for opening the outlet of a pressure vessel
US3197234A (en) * 1963-06-10 1965-07-27 Harry A Bertrand Safety device for vehicle passengers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797853A (en) * 1971-04-17 1974-03-19 Dynamit Nobel Ag Safety device for vehicles
US3856181A (en) * 1973-06-25 1974-12-24 Gen Motors Corp Inflator
US3915339A (en) * 1974-07-08 1975-10-28 Matson C G Quick-release aerator for introducing high pressure air into a container to facilitate dispensing
US20030132241A1 (en) * 2002-01-16 2003-07-17 Global Manufacturing, Inc. Quick release trigger valve and blast aerator
US6726059B2 (en) * 2002-01-16 2004-04-27 Global Manufacturing Inc. Quick release trigger valve and blast aerator
US11345538B2 (en) * 2017-06-20 2022-05-31 Thejo Engineering Ltd. Air blaster

Also Published As

Publication number Publication date
FR2104587A5 (OSRAM) 1972-04-14
DE2140702A1 (de) 1972-03-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KIDDE, INC.

Free format text: MERGER;ASSIGNORS:HIMP-2 INC.;HIMP-2 INC. (CHANGED TO);REEL/FRAME:005046/0017

Effective date: 19880331

Owner name: WALTER KIDDE AEROSPACE, INC., 2500 AIRPORT DRIVE,

Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:KIDDE, INC.;REEL/FRAME:004996/0116

Effective date: 19880402

AS Assignment

Owner name: BLOOM-1 INC., A CORP. OF DE

Free format text: MERGER;ASSIGNOR:KIDDE INC.;REEL/FRAME:005359/0391

Effective date: 19880331