WO1982001580A1 - A protection cap for gas bottles - Google Patents

A protection cap for gas bottles Download PDF

Info

Publication number
WO1982001580A1
WO1982001580A1 PCT/DK1981/000092 DK8100092W WO8201580A1 WO 1982001580 A1 WO1982001580 A1 WO 1982001580A1 DK 8100092 W DK8100092 W DK 8100092W WO 8201580 A1 WO8201580 A1 WO 8201580A1
Authority
WO
WIPO (PCT)
Prior art keywords
cap
screw
neck portion
screw threaded
tongue portions
Prior art date
Application number
PCT/DK1981/000092
Other languages
French (fr)
Inventor
Gas As Bp
Otto Faaborg
Original Assignee
Gas As Bp
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 Gas As Bp filed Critical Gas As Bp
Publication of WO1982001580A1 publication Critical patent/WO1982001580A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/62—Secondary protective cap-like outer covers for closure members
    • 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
    • F17C2205/0308—Protective caps

Definitions

  • a protection cap for gas bottles is provided.
  • This invention relates to a protective cap for removably covering the valve fitted top end portion of a cylinder or bottle for LPG gas or a similar container having a screw threaded neck portion, from a central area of which a valve structure projects, the cap being a substantially cylindrical member, the lower ⁇ most interior side portion of which is screw threaded so as to be engageable with said screw threaded neck portion of the container.
  • a protective cap which has to be mechanically highly resistant and correspondingly well anchored to - the gas cylinder.
  • steel caps which are firmly screwn onto the cylinder neck portions.
  • the cap member according to the invention is cha ⁇ racterized in that it is made of a semi resilient ar- tificial material and that the said lower end of the cap is constituted by a plurality of circumferentially spaced tongue portions projecting downwardly from the cylindrical main portion of the cap through a distance longer than the axial extension of the neck engaging screw threadings.
  • the cap mem ⁇ ber will be usable in a well defined manner even on a somewhat broader cylinder neck, because the said tongue portions are able to yield resiliently outwardly and still engage the screw threading of the cylinder neck portion.
  • the cap When made of a suitable artificial material such as polycarbonate the cap will be unable to get stuck to the steel cylinder neck by virtue of rust, and the broad and high slots between the tongue por ⁇ tions will serve not only to enable the tongue portions to be bent outwardly as required for adaption to a re- latively broad cylinder neck portion, but additionally to ensure a free ventilation of the space inside the cap such that residue gas cannot be collected in this ' space. Moreover the material of the cap will clearly counteract the formation of sparks, and it will be unable to stick to the steel neck portion of the cylin ⁇ der by way of any type of corrosion.
  • a suitable artificial material such as polycarbonate
  • the cap according to the invention will be cheap to manufacture, and another important advantage is that it will be mountable on the cylinder neck portion by a simple axial displacement, without having to be rotated, because the said tongue portions will yield outwardly by such displacement and finally engage the screw threading of. the cylinder neck portion in a well defined manner.
  • the cap is thereafter un- screwable from the cylinder neck portion, and since the cap is preferably die cast it is conveniently provided with exterior protrusions or ribs, which are easily gripped by suitable means for rotating the cap out of engagement with the cylinder neck portion.
  • Fig. 1 is a perspective view of an embodiment of the protection cap according to the invention.
  • FIGs. 2 and 3 illustrate the use of the protection cap
  • Figs. 4-6 are plane views - partly in section - showing a preferred embodiment of the protection cap according to the invention.
  • the protection cap 2 shown in Fig. 1 is made of a suitable unbreakably artificial material such as poly ⁇ carbonate, and the cap 2 is at its lower open end pro- vided with four tongue portions 4 projecting downwardly, from the cylindrical main portion of the. cap 2.
  • the inner sides of the tongue portions 4 are provided with screw threadings 6.
  • These screw threadings 6 are utual- ly adapted in such a manner as if the internal screw threading was unbroken, i.e. in such a manner that the screw threading of each of the tongue portions 4 fits onto a screw threaded neck portion 8 of a valve and portion 10 of a LPG gas bottle 12 (Figs. 2 and 3) .
  • the protection cap 2 is made of arti ⁇ ficial resin, i.e. the tongue portions 4 are able to yield resiliently outwardly and still engage the screw threading 8 of the cylinder neck portion or valve end portion 10 with some radial spring force - even if the diameter of the screw threading 8 differs somehow.
  • Fig. 2 illustrates how the cap 2 can be mounted on the cylinder neck portion 0 of the gas bottle 12 by a simple axial displacement, since the cap 2 can easily be pressed or be stroken onto the neck portion 10 by a palm of the hand.
  • the protection cap 2 can also be screwed onto the screw neck portion 8 of the gas bottle 12.
  • the protection cap 2 can as indicated in Fig. 3 be unscrewed from the neck portion 8 as usually.
  • the tongue portions 6 are formed between broad and high slots 14 which not only serve to enable the tongue por ⁇ tions 8 to be bent outwardly as required for the adap ⁇ tion to a relatively broad cylinder neck portion 10, but also ensure a free ventilation of the space inside the cap 2 such that residue gas cannot be collected in this space (Fig. 3 ⁇ .
  • the protection cap 2 is provided with exterior ribs 16, which are easily gripped by suitable means for rotating the cap out of engagement with the cylinder neck por ⁇ tion 8 or 10, e.g. in gas filling plants.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A protection cap for removably covering the valve fitted top end portion (10) of a cylinder or bottle (12) for LPG gas or a similar container having a screw threaded neck portion (8), from a central area of which a valve structure projects, the cap being a substantially cylindrical member and is made of a semi-resilient artificial material, since the lower end of the cap is constituted by a plurality of circumferentially spaced tongue portions (4) projecting downwardly from the cylindrical main portion of the cap and being provided with internal screw threadings (6) for engaging said screw threaded neck portion (8) of the gas bottle (12), said tongue portions (4) being longer than the axial length of the neck engaging screw threadings (6) of the cap, so as to form ventilation openings or slots (14) between said tongue portions (4).

Description

A protection cap for gas bottles.
This invention relates to a protective cap for removably covering the valve fitted top end portion of a cylinder or bottle for LPG gas or a similar container having a screw threaded neck portion, from a central area of which a valve structure projects, the cap being a substantially cylindrical member, the lower¬ most interior side portion of which is screw threaded so as to be engageable with said screw threaded neck portion of the container. During handling and transport of steel cylinders for LPG gas the top valves of the cylinders should be covered by a protective cap which has to be mechanically highly resistant and correspondingly well anchored to - the gas cylinder. In practice is used steel caps which are firmly screwn onto the cylinder neck portions.
Though the various manufacturers of gas cylinders pro¬ vide the cylinders with neck portions of rather uniform size or screw thread diameter, the sizes or diameters are not, however, exactly uniform, and since the asso- ciated caps are loose elements, which are, in use, like¬ ly to be changed between cylinders from different manu¬ facturers, it frequently happens that a cylinder is fitted with an odd cap. Hereby the cap may be fitted either so loosely that it is not at all safely held on the cylinder or so tightly that it is difficult to un¬ screw or has involved damage to the screw threadings of both the cylinder neck and the cap itself.
In gas filling plants it is often experienced that the cap of an empty cylinder is impossible to remove automatically, because it sticks firmly to the cylinder either due to its threading diameter being odd or due to rust in the threading connection with the cylinder neck portion. It is normal practice to loosen such a cap by putting a steel rod through diametrically opposed holes in the upper part of the cap and then forcing it to be unscrewn. In this connection it is even a problem that any possible residue gas inside the cap may be ignited by a spark occurring as a re¬ sult of the rough treatment of the steel cap.
Thus, though the conventional caps are made as relatively expensive elements, they nevertheless pre- sent some serious problems, and it is the purpose of the present invention to enable these problems to be overcome, in an easy manner. According to the inven¬ tion all of the various problems may be overcome and further advantages achieved already with the use of a special cap member, i.e. wi-thout otherwise changing the usual picture or handling routines of the various cylinders as fitted with separate cap members.
The cap member according to the invention is cha¬ racterized in that it is made of a semi resilient ar- tificial material and that the said lower end of the cap is constituted by a plurality of circumferentially spaced tongue portions projecting downwardly from the cylindrical main portion of the cap through a distance longer than the axial extension of the neck engaging screw threadings.
When this cap member is produced with such a shape that the screw threadings as present on the inner sides of said tongues generally correspond to the smaller of the screw threading diameters of the neck portions of the said different cylinder products, then the cap mem¬ ber will be usable in a well defined manner even on a somewhat broader cylinder neck, because the said tongue portions are able to yield resiliently outwardly and still engage the screw threading of the cylinder neck portion. When made of a suitable artificial material such as polycarbonate the cap will be unable to get stuck to the steel cylinder neck by virtue of rust, and the broad and high slots between the tongue por¬ tions will serve not only to enable the tongue portions to be bent outwardly as required for adaption to a re- latively broad cylinder neck portion, but additionally to ensure a free ventilation of the space inside the cap such that residue gas cannot be collected in this' space. Moreover the material of the cap will clearly counteract the formation of sparks, and it will be unable to stick to the steel neck portion of the cylin¬ der by way of any type of corrosion.
Additionally the cap according to the invention will be cheap to manufacture, and another important advantage is that it will be mountable on the cylinder neck portion by a simple axial displacement, without having to be rotated, because the said tongue portions will yield outwardly by such displacement and finally engage the screw threading of. the cylinder neck portion in a well defined manner. The cap is thereafter un- screwable from the cylinder neck portion, and since the cap is preferably die cast it is conveniently provided with exterior protrusions or ribs, which are easily gripped by suitable means for rotating the cap out of engagement with the cylinder neck portion. In the following the invention is described in more detail with reference to the the drawing, in which:-
Fig. 1 is a perspective view of an embodiment of the protection cap according to the invention.
Figs. 2 and 3 illustrate the use of the protection cap, while
Figs. 4-6 are plane views - partly in section - showing a preferred embodiment of the protection cap according to the invention.
The protection cap 2 shown in Fig. 1 is made of a suitable unbreakably artificial material such as poly¬ carbonate, and the cap 2 is at its lower open end pro- vided with four tongue portions 4 projecting downwardly, from the cylindrical main portion of the. cap 2. The inner sides of the tongue portions 4 are provided with screw threadings 6. These screw threadings 6 are utual- ly adapted in such a manner as if the internal screw threading was unbroken, i.e. in such a manner that the screw threading of each of the tongue portions 4 fits onto a screw threaded neck portion 8 of a valve and portion 10 of a LPG gas bottle 12 (Figs. 2 and 3) . As mentioned the protection cap 2 is made of arti¬ ficial resin, i.e. the tongue portions 4 are able to yield resiliently outwardly and still engage the screw threading 8 of the cylinder neck portion or valve end portion 10 with some radial spring force - even if the diameter of the screw threading 8 differs somehow.
Therefore the screw threaded tongue portions 6 of the protection cap 2 are adapted in accordance with the smallest of the screw threading diameters of the neck portion 8 of a given LPG gas bottle 12. Fig. 2 illustrates how the cap 2 can be mounted on the cylinder neck portion 0 of the gas bottle 12 by a simple axial displacement, since the cap 2 can easily be pressed or be stroken onto the neck portion 10 by a palm of the hand. Of course the protection cap 2 can also be screwed onto the screw neck portion 8 of the gas bottle 12.
The protection cap 2 can as indicated in Fig. 3 be unscrewed from the neck portion 8 as usually. The tongue portions 6 are formed between broad and high slots 14 which not only serve to enable the tongue por¬ tions 8 to be bent outwardly as required for the adap¬ tion to a relatively broad cylinder neck portion 10, but also ensure a free ventilation of the space inside the cap 2 such that residue gas cannot be collected in this space (Fig. 3} .
In a preferred embodiment shown in Figs. 4-6 the protection cap 2 is provided with exterior ribs 16, which are easily gripped by suitable means for rotating the cap out of engagement with the cylinder neck por¬ tion 8 or 10, e.g. in gas filling plants.
- E

Claims

CLAIMS :
1. A cap for removably covering the valve fitted top end portion of a cylinder or bottle (12) for LPG gas or a similar container having a screw threaded neck portion (8) , from a central area of which a valve struc- ture projects, the cap being a substantially cylindri¬ cal member, the lowermost interior side portion of which is screw threaded so as to be engageable with said screw threaded neck portion (8) of the container, characterized in that the cap is made of a semi-resi- lient artificial material and that the said lower end of the cap is constituted by -a plurality of circumfe- rentially spaced tongue portions (4) projecting down¬ wardly from the cylindrical main portion of the cap through a distance longer than the axial length of the neck engaging screw threadings (6) .
2. A cap according to claim 1, characterized in that the relatively broad slots (14) between the neighbour¬ ing tongues (6) have their upper ends formed in a half-circular manner.
3. A cap according to claim 1 or 2, characterized in that the outside of the cylindrical main portion of the cap is provided with protrusions such as a plurality of axially extending ribs (16).
4. A cap according to claim 1, 2 or 3, characterized in that it is a die cast member of polycarbonate or a si¬ milar material, preferably transparent and/or coloured.
PCT/DK1981/000092 1980-10-27 1981-10-23 A protection cap for gas bottles WO1982001580A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK4531/80801027 1980-10-27
DK453180A DK453180A (en) 1980-10-27 1980-10-27 COVER TO PROTECT THE VALVE END OF A PRESSURE BOTTLE EXTING GAS BOTTLE

Publications (1)

Publication Number Publication Date
WO1982001580A1 true WO1982001580A1 (en) 1982-05-13

Family

ID=8134380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1981/000092 WO1982001580A1 (en) 1980-10-27 1981-10-23 A protection cap for gas bottles

Country Status (3)

Country Link
DK (1) DK453180A (en)
PT (1) PT73885B (en)
WO (1) WO1982001580A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026438A1 (en) * 1995-06-08 2000-08-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Valvecap for gas bottle and gas bottle equipped therewith
FR2828922A1 (en) 2001-08-23 2003-02-28 Air Liquide VALVE FOR CONTROLLING THE FLOW OF A FLUID HAVING A LEVER IN MULTIPLE STABLE POSITIONS
WO2016058951A3 (en) * 2014-10-17 2016-06-23 Linde Aktiengesellschaft Valve guard
WO2019046617A1 (en) * 2017-08-30 2019-03-07 Wilkinson Michael Wayne Compressed gas cylinder quick release safety cap

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106895257A (en) * 2017-03-31 2017-06-27 武汉华星光电技术有限公司 A kind of anti-error dismantling device of special gas cylinder and special gas cylinder replacing options

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1007977A (en) * 1949-04-13 1952-05-12 Protective cap for pressurized fluid bottles
FR1085890A (en) * 1953-06-02 1955-02-08 Air Liquide Device for attaching a valve protective cap to a gas cylinder
DE941731C (en) * 1953-10-26 1956-04-19 Jean Olivari With one or more handles provided closure cap for gas bottles u. like
FR1596615A (en) * 1968-10-15 1970-06-22
DE2150709A1 (en) * 1971-10-12 1973-04-19 Hans Heinlein LOCKING CAP WITH GENUINE LOCK AND SECURITY TO PREVENT UNAUTHORIZED OPENING BY CHILDREN
DE2317072A1 (en) * 1973-04-05 1974-10-24 Sadeva Fa CLIP-ON PROTECTIVE CAP, ESPECIALLY FOR AEROSOL VALVES

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1007977A (en) * 1949-04-13 1952-05-12 Protective cap for pressurized fluid bottles
FR1085890A (en) * 1953-06-02 1955-02-08 Air Liquide Device for attaching a valve protective cap to a gas cylinder
DE941731C (en) * 1953-10-26 1956-04-19 Jean Olivari With one or more handles provided closure cap for gas bottles u. like
FR1596615A (en) * 1968-10-15 1970-06-22
DE2150709A1 (en) * 1971-10-12 1973-04-19 Hans Heinlein LOCKING CAP WITH GENUINE LOCK AND SECURITY TO PREVENT UNAUTHORIZED OPENING BY CHILDREN
DE2317072A1 (en) * 1973-04-05 1974-10-24 Sadeva Fa CLIP-ON PROTECTIVE CAP, ESPECIALLY FOR AEROSOL VALVES

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026438A1 (en) * 1995-06-08 2000-08-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Valvecap for gas bottle and gas bottle equipped therewith
EP0747796B2 (en) † 1995-06-08 2007-11-21 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Pressure-reducing valve assembly for gas bottle and gas bottle equipped therewith
FR2828922A1 (en) 2001-08-23 2003-02-28 Air Liquide VALVE FOR CONTROLLING THE FLOW OF A FLUID HAVING A LEVER IN MULTIPLE STABLE POSITIONS
WO2003019056A1 (en) 2001-08-23 2003-03-06 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Fluid flow control cock fitted with a lever having several stable positions
US8056580B2 (en) 2001-08-23 2011-11-15 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes George Claude Fluid flow control cock fitted with a lever having several stable positions
US8061682B2 (en) 2001-08-23 2011-11-22 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Fluid flow control cock fitted with a lever having several stable positions
US8402997B2 (en) 2001-08-23 2013-03-26 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Fluid flow control cock fitted with a lever having several stable positions
WO2016058951A3 (en) * 2014-10-17 2016-06-23 Linde Aktiengesellschaft Valve guard
WO2019046617A1 (en) * 2017-08-30 2019-03-07 Wilkinson Michael Wayne Compressed gas cylinder quick release safety cap

Also Published As

Publication number Publication date
PT73885B (en) 1983-05-23
DK453180A (en) 1982-04-28
PT73885A (en) 1981-11-01

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