GB2201228A - Valved gas cylinder - Google Patents

Valved gas cylinder Download PDF

Info

Publication number
GB2201228A
GB2201228A GB8800505A GB8800505A GB2201228A GB 2201228 A GB2201228 A GB 2201228A GB 8800505 A GB8800505 A GB 8800505A GB 8800505 A GB8800505 A GB 8800505A GB 2201228 A GB2201228 A GB 2201228A
Authority
GB
United Kingdom
Prior art keywords
gas cylinder
cord
pressure plate
valve
pull
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.)
Withdrawn
Application number
GB8800505A
Other versions
GB8800505D0 (en
Inventor
Dipl-Ing Werner Moritzen
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.)
Autoflug GmbH
Original Assignee
Autoflug GmbH
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 Autoflug GmbH filed Critical Autoflug GmbH
Publication of GB8800505D0 publication Critical patent/GB8800505D0/en
Publication of GB2201228A publication Critical patent/GB2201228A/en
Withdrawn legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0772—Inflation devices, e.g. for rescue vests or tyres

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Safety Valves (AREA)

Abstract

In a gas cylinder having a valve which is to be opened suddenly in order to release the contents, the valve is actuatable by means of a pull cord 11 and includes an energy store which when actuated acts on the pull cord to open the valve. Preferably the energy store is a compression spring 17 disposed in a housing 10 and acting on a pressure plate 18 which is secured by securing means 20, 21. The pull cord is connected to the pressure plate so that a pull on the cord together with the effect of the spring 17 on the pressure plate releases the securing means 20, 21 so that the pressure plate moves forward in the housing 10 to a portion determined by stop 22 and acts on the pull cord 11 to open the valve of the cylinder. In another embodiment (Fig. 5) the securing means are constructed as pincer members and are actuatable by a separate actuating cord, the pull cord and actuating cord being coupled together to form one operating cord. <IMAGE>

Description

Valved Gas Cylinder The invention relates to a gas cylinder having a valve which has to be opened suddenly in order to release the contents, the valve being actuatable by means of a pull cord.
In gas cylinders of this kind, which when actuated are used primarily to inflate objects or for the gas operation of certain articles, the stored gas has to be released through a valve which is actuated suddenly. Conventional valves are usually opened by means of a pull cord, a tug on the pull cord causing the valve to open in a predetermined manner. Some of these are conventional valves consisting of a valve which seals off a flow opening whilst others are sealing membranes which are pierced by a valve pin. A serious disadvantage of this is that a weaker tug on the cord may result in the valve being only partially opened, as the force exerted is not sufficient to open the valve to its full cross-sectional opening.
If the valve does not open to its full cross-sectional opening, however, trouble free release of the stored gas cannot be guaranteed and as a result of the predetermined expansion of the gas the remaining crosssectional opening will generally ice up and further outflow of the gas may be jeopardised.
The aim of the invention is there for to improve a gas cylinder with actuating means of the type described hereinbefore so that partial activation is safely avoided, in other words the valve will always be opened to its full cross-section of opening when the actuation means are operated.
According to the invention there is provided a gas cylinder having a valve which is to be opened suddenly in order to release its contents, the valve being actuatable by means of a pull cord, including an energy store which, when actuated, acts on the pull cord so as to open the valve.
The pull cord itself may be arranged so as to actuate the energy store or the energy store may be actuated by means of a separate actuating or release cord.
The first advantage of the invention is that a pull on the pull cord or release cord will always result in a release of-the energy store, which then acts like a servo effect on the pull cord and ensures, by an automatic operation, that the valve achieves its full cross-sectional opening by means of an adequate opening movement.
In a preferred construction the energy store is a compression spring mounted in a housing and acting on a pressure plate moveably mounted in the housing and secured in the non-actuated position by a securing means.
In order to avoid jamming of the pull cord of the housing of the energy storage unit when the pull cord movement is reinforced in this way by means of the compression spring provided, at least one stop is preferably provided to limit the range of movement of the pressure plate. Reliability of operation is also aided by a collar which is advantageously provided according to one embodiment of the invention in the end wall of the housing at the actuation end, this collar serving to guide the pull and/or release cord out of the housing, so that the pull on the cord does not necessarily have to be exterted in the longitudinal direction of the housing; rather, the collar which is of flexible construction gives some play for actuation from directions other than the longitudinal direction of the housing.The connection between the cord and the collar is designed so that when an actuating pull is exerted on the cord the collar is removed from the housing wall, so that the sequence of movements of the interacting parts can proceed unimpeded.
According to a preferred embodiment of the invention the pull cord is advantageously also used as an actuating cord, the pull cord being guided through the pressure plate, which is secured in the housing under spring bias by suitable securing means, so that a pull on the pull cord will initially release the pressure plate which in turn converts the movement of release of the spring into a pulling movement on the pull cord. This has the advantage that if the energy storage unit should fail the valve will still be actuated by a pull on the pull cord.
The same effect can also be achieved, according to another embodiment of the invention, if two cords, pull cord and actuating cord, are provided and are also separately connected to the parts of the mechanism associated with them; however, taking into account the different actuation methods, the two cords are combined to form a single cord with an actuating loop so that a pull on the free end of the cord will both release the pressure plate and also ensure opening of the valve itself, and consequently even if the energy store should fail the pull cord will still act on the valve in order to open it.
Preferred embodiments of the invention will now be described by way of example only with reference to the accompanying drawings wherein: Fig. 1 shows a unit for reinforcing the actuation of the gas cylinder valve (not shown), Fig. 2 shows the unit of Fig. 1, partly in section, Fig. 3 shows the reinforcing unit in a different embodiment, Fig. 4 shows the unit of Fig. 3 partly in section, Fig. 5 shows the reinforcing unit in another embodiment.
The unit for reinforcing the actuating movement of the pull cord in order to open a valve (not shown) of a gas cylinder (not shown either) consists essentially of a cylindrical housing 10 through which is passed a pull cord 11 which at its rear end is passed round the rotation axis 12 of the valve (not shown) and secured to the actuating head of the valve by a fixing.
A threaded connection 14 ensures that the pull cord collar and the unit are securely attached with the gas cylinder valve. The pull cord 11 has at its other end a loop 15 for actuation and is guided through a flexibly mounted collar 16 in the end wall at the outlet side of the housing 10.
As can be seen in detail from Fig. 2, there is provided inside the housing 10 a compression spring 17 which reacts between the rear, at the valve side, housing wall on the one side, and a pressure plate,18 moveably mounted in the housing 10, on the other side. The pull cord 11 is passed through the pressure plate 18 and firmly secured thereto by means of a plug 19. The pressure plate is secured in its rest position by means of ball-ended rods 21 which are radially supported in recessess 20 in the housing and which are resiliently inwardly moveable. Also mounted on the inside of the housing 10 is a stop 22 which limits the movement of the pressure plate 18.
The reinforcing unit shown in Fig. 1 and 2 operates as follows: If the valve of the gas cylinder is to be actuated and opened, this is done by pulling on the pull cord 11 by means of the loop 15. As the pull cord 11 is connected to the pressure plate 18 this movement is transmitted to the pressure plate 18, thereby overcoming the radial stress of the ball-ended rods 21 and releasing them from the recessess 20 in the housing. Once these securing means 21 are released the spring 17 is then able to press the pressure plate suddenly forward until it meets the stop 22, thereby aiding the actuating pull on the cord 11 by automatically reinforcing it and ensuring that the valve opens fully.
If the energy store should be damaged, for example by breakage of the spring, then in this embodiment the valve will still be actuated by a pull on the pull cord, although without any automatic reinforcement, thus resulting in very great operational reliability of the actuating mechanism for the gas cylinder valve.
In the embodiment shown in Fig. 3, a special actuating cord 23 is provided which is coupled to the pull cord 11 so that there is only a single loop 15 for actuating both cords 11, 23. Whereas the pull cord 11 is passed through the collar 16 into the housing 10, connected to the pressure plate 18 therein by means of the cord plug 19 and then coupled, by means of the additional fixing 13, to the valve (not shown) of the gas cylinder (not shown either) as already described, the operating cord 23 connected to the pull cord 11 via a clamp 24 in front of the collar 16 and outside the housing 10 is passed to the securing means for the pressure plate 18 where it is attached.
The length of the operating cord 23 is such that a suitable pull on the combined operating and pull cord 23, 11 is sufficient to release the securing means 25.
The securing means for the pressure plate 18 are, in the present instance, constructed as radially movable locking pincers 25 which hold the pressure plate 18, which are operated by an actuating member 26 provided at the end of the drive cord 23 and are pulled radially apart, so that the locking action exerted on the pressure plate 18 by the locking pincers 25 can be cancelled.
Another alternative embodiment of the securing means is shown in Fig. 4, in which there are two pins 28 which can be pushed radially outwards through openings 27 in the housing, and which are bevelled at the edge adjacent the pressure plate 18 in the rest position, so that a pull on the pull cord 11 together with the pressure of the pressure plate 18 on the pins 28 under the effect of the spring 17 will cause them to pass through the openings 27 in the housing, thereby releasing the pressure plate 18.
As is clear from the description of the drawings, when the apparatus is actuated the same sequence of movements will occur as described. A pull on the loop 15 causes the short actuating cord 23 first to open the locking pincers 25, after which the spring 17 released in this way actuates the pull cord 11 until the pressure plate 18 abuts on the stop 22 and thereby automatically actuates the valve. In this embodiment too, it is guaranteed that if the reinforcing device should fail the valve will still be actuated simply by a pull on the pull cord, since in the direction of pulling there is no connection with the pressure plate,'i.e. in this respect the pull cord is moveable independently of the reinforcing unit.For this reason, at least in the embodiment shown in Fig. 3, the cord plug 19 must be designed so that the pull cord is able to move through the pressure plate 18 in the direction of pulling, so as to ensure that the pull cord has free mobility which is not linked to the opening of the securing means.
The embodiment shown in Fig. 5 corresponds largely to that shown in Fig. 3, with the proviso that the pull cord 11 is connected directly and finally to the pressure plate 18 and after the pincer-shaped securing means 25 have been released by means of the separately provided actuating cord 23, this pressure plate, acted upon by the spring 17, ensures that the valve is opened. The advantage of this arrangement is that the actuating cord 23 is able to act laterally as well and not only essentially in the longitudinal direction of the housing 10.
The features of the subject matter of these documents disclosed in the foregoing specification, claims, abstract and drawings both individually and in any desired combination with one another may be essential to the realisation of the invention in its various embodiments.

Claims (17)

Claims
1. Gas cylinder having a valve which is to be opened suddenly in order to release its contents, the valve being actuatable by means of a pull cord, including an energy store which, when actuated, acts on the pull cord so as to open the valve.
2. Gas cylinder according to claim 1 wherein the energy store is constructed as a spring which is held in a housing and is prestressed and secured in a rest position.
3. Gas cylinder according to claim 2, wherein the spring acts on a pressure plate moveably mounted in the housing and secured in the non-actuated position by a securing means.
4. Gas cylinder according to claim 3 wherein at least one stop is provided in the housing which limits the range of movement of the pressure plate.
5. Gas cylinder according to claim 3 or 4 wherein the securing means are constructed as pincer members which grip the pressure plate and open radially when actuated.
6. Gas cylinder according to claim 3 or 4 wherein the securing means are constructed as ball-ended rods which are radially supported in recessess in the housing and which flex inwardly when actuated.
7. Gas cylinder according to claim 3 or 4 wherein the securing means are constructed as pins which can be pushed radially outwardly through openings in the housing and which have a bevel on their edge which co-operates with the pressure plate.
8. Gas cylinder according to claim 3, 4, 6 or 7 wherein the pull cord itself is arranged so as to actuate the energy store.
9. Gas cylinder as claimed in claim 8 wherein the pull cord is connected to the pressure plate so that a pull on the pull cord together with the effect of the spring on the pressure plate releases the securing means.
10. Gas cylinder according to claim 3, 4 or 5 wherein the energy store is actuatable by means of a separate actuating cord.
11. Gas cylinder according to claim 10 wherein the actuating cord, when actuated, acts on the securing means in order to bring about the release of the pressure plate.
12. Gas cylinder according to claim 11 wherein the pull cord and actuating cord are coupled together to form one operating cord with a loop.
13. Gas cylinder according to claim 12 wherein the pull cord is connected to the pressure plate for actuation thereby when released but so as to be able to act directly on said valve.
14. Gas cylinder having a valve substantially as described with reference to Figs. 1 and 2 of the accompanying drawings.
15. Gas cylinder having a valve substantially as described with reference to Fig. 3 of the accompanying drawings.
16. Gas cylinder having a valve substantially as described with reference to Fig. 4 of the accompanying drawings.
17. Gas cylinder having a valve substantially as described with reference to Fig. 5 of the accompanying drawings.
GB8800505A 1987-01-10 1988-01-11 Valved gas cylinder Withdrawn GB2201228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873700616 DE3700616A1 (en) 1987-01-10 1987-01-10 GAS BOTTLE WITH RELEASE DEVICE

Publications (2)

Publication Number Publication Date
GB8800505D0 GB8800505D0 (en) 1988-02-10
GB2201228A true GB2201228A (en) 1988-08-24

Family

ID=6318678

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8800505A Withdrawn GB2201228A (en) 1987-01-10 1988-01-11 Valved gas cylinder

Country Status (4)

Country Link
DE (1) DE3700616A1 (en)
DK (1) DK7588A (en)
FR (1) FR2609524B1 (en)
GB (1) GB2201228A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10106123B2 (en) 2014-08-06 2018-10-23 Moog Controls Limited Firing mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005026177B3 (en) * 2005-06-06 2007-07-26 Andreas Grasl Trigger of a pressure medium storage, in particular a CO2 disposable bottle
CN110836329B (en) * 2019-11-27 2021-08-27 王栋 Energy release method of liquid gas storage tank

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB370057A (en) * 1931-01-07 1932-04-07 Pyrene Co Ltd Improvements relating to fire extinguishing apparatus
GB526386A (en) * 1938-03-15 1940-09-17 Bronzavia Sa Improvements in or relating to means for protecting respiration in a vitiated or rarified atmosphere
GB833069A (en) * 1957-07-05 1960-04-21 Frankenstein & Sons Manchester Improvements in or relating to the automatic inflation of lifejackets and other inflatable equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1173226A (en) * 1957-02-26 1959-02-23 L Angeviniere Soc Ind Packaging device for inflatable boats
GB910691A (en) * 1959-10-24 1962-11-14 Normalair Ltd Improvements in or relating to capsule operated release mechanism
US3227309A (en) * 1964-08-18 1966-01-04 Jack L Hearrell Inflating device with means for testing the condition of a charging cartridge
US4355987A (en) * 1980-10-15 1982-10-26 The Garrett Corporation Life raft inflation system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB370057A (en) * 1931-01-07 1932-04-07 Pyrene Co Ltd Improvements relating to fire extinguishing apparatus
GB526386A (en) * 1938-03-15 1940-09-17 Bronzavia Sa Improvements in or relating to means for protecting respiration in a vitiated or rarified atmosphere
GB833069A (en) * 1957-07-05 1960-04-21 Frankenstein & Sons Manchester Improvements in or relating to the automatic inflation of lifejackets and other inflatable equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10106123B2 (en) 2014-08-06 2018-10-23 Moog Controls Limited Firing mechanism

Also Published As

Publication number Publication date
GB8800505D0 (en) 1988-02-10
DE3700616A1 (en) 1988-07-21
DK7588D0 (en) 1988-01-08
DK7588A (en) 1988-07-11
DE3700616C2 (en) 1991-08-01
FR2609524B1 (en) 1989-11-17
FR2609524A1 (en) 1988-07-15

Similar Documents

Publication Publication Date Title
US5988238A (en) Closure device for a vehicle tank filler neck
US5735557A (en) Lock mechanism
US3946769A (en) Automatic cable tie installation tool
US6584763B2 (en) Lock for the translating sleeve of a turbofan engine thrust reverser
US6045091A (en) Thrust reverser with improved impact strength
US4314783A (en) Quick release load securement device
US4665802A (en) Shipping and installation restraining strap for slave cylinder
US20160053719A1 (en) Automatic deflection limiting latches for a thrust reverser
US5875634A (en) Pyrotechnical drive device with pressure relief
DE2121389B2 (en) Quick-opening shut-off valve for pressurized fluids
JPH10169508A (en) Method for closing door of thrust reverser and its device
EP2184526B1 (en) Coupling
KR920009865B1 (en) Remote actuator for trip valve
GB2201228A (en) Valved gas cylinder
EP0512807B1 (en) Fastener nose assembly with rearward jaw release
DE69503431T2 (en) Release device for an acoustic underwater buoy powered by a long-life battery
EP0955221B1 (en) Quick connect coupling for a hydraulic control system
US5228642A (en) Canopy or panel actuation system
US4863673A (en) Check valve test method for control rod drive
GB2100310A (en) Pneumatic apparatus for joining threads and testing joint
US7021166B2 (en) Booster actuator
US5279593A (en) Trocar sleeve
EP0789126A1 (en) A window comprising a pasquil locking mechanism and a window operator with an operating member
HU903920D0 (en) Safety lock and case for emergency exits
US3979803A (en) Quick release latch

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)