US20170191622A1 - Polar boss component for pressurized-gas storage assembly - Google Patents
Polar boss component for pressurized-gas storage assembly Download PDFInfo
- Publication number
- US20170191622A1 US20170191622A1 US15/405,917 US201715405917A US2017191622A1 US 20170191622 A1 US20170191622 A1 US 20170191622A1 US 201715405917 A US201715405917 A US 201715405917A US 2017191622 A1 US2017191622 A1 US 2017191622A1
- Authority
- US
- United States
- Prior art keywords
- polar boss
- liner
- polar
- boss
- helical threads
- 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.)
- Abandoned
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Classifications
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- 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
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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- 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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- 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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/005—Storage of gas or gaseous mixture at high pressure and at high density condition, e.g. in the single state phase
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- 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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
- F17C1/04—Protecting sheathings
- F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
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- 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
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/14—Linings or internal coatings
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- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0604—Liners
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/0663—Synthetics in form of fibers or filaments
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/0663—Synthetics in form of fibers or filaments
- F17C2203/0673—Polymers
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- 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
- F17C2205/0305—Bosses, e.g. boss collars
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- 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
- F17C2205/037—Quick connecting means, e.g. couplings
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- 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
- F17C2205/0382—Constructional details of valves, regulators
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- 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
- F17C2205/0388—Arrangement of valves, regulators, filters
- F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
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- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
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- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
- F17C2209/2109—Moulding
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- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
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- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/227—Assembling processes by adhesive means
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- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/234—Manufacturing of particular parts or at special locations of closing end pieces, e.g. caps
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- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/011—Oxygen
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- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
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- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/035—Propane butane, e.g. LPG, GPL
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- 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
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- 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
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/036—Very high pressure (>80 bar)
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- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/011—Improving strength
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- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/035—Dealing with losses of fluid
- F17C2260/036—Avoiding leaks
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- 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
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0171—Trucks
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- 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
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0178—Cars
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- 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
- F17C2270/0781—Diving equipments
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- 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
- F17C2270/079—Respiration devices for rescuing
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- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
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- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49881—Assembling or joining of separate helix [e.g., screw thread]
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- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49904—Assembling a subassembly, then assembling with a second subassembly
Definitions
- This invention relates to storage tanks having liners, especially storage tanks with plastic liners used for storing compressed gaseous fuels.
- the present invention is related to a closure assembly for a pressure vessel, which is also a term used to describe such storage tanks.
- Pressure vessels are widely used to store liquids and gases under pressure.
- One growing application of pressure vessels is their use in the storage of alternative 15 fuels, such as natural gas, hydrogen or propane, for use in vehicles such as automobiles.
- Natural gas and propane are increasingly viewed as preferable to gasoline for fueling vehicles. Accordingly, approaches have been devised for converting gasoline-fueled vehicles to natural gas-fueled or propane-fueled vehicles by retrofitting them to use natural gas or propane instead of gasoline. Additionally, new vehicles are currently being built which are designed to operate using natural gas or propane as the fuel source.
- Vessels used for storing natural gases and propane preferably are equipped with a plastic liner, which serves to keep the stored gas from leaking.
- the liner is overwrapped with composite fibers and epoxy resin to form an outer shell of the pressure vessel.
- the plastic liner preferably covers the entire interior surface of the pressure vessel, including the neck portion, which defines an access opening for loading fuel.
- a metallic polar boss is roto-molded or injection molded with the liner, and an adapter is installed into the polar boss to finish sealing the liner, and to allow for other metallic parts to attach to the pressure vessel.
- the polar boss assemblies for such conventional pressure vessels are therefore provided with two machined parts (i.e., the adapter and the polar boss).
- It is an object of the present invention is to provide an improved polar boss assembly for use with a composite pressure vessel that has a simplified construction with effective sealing capabilities.
- the present invention provides a pressurized-gas storage assembly having a liner defining a gas storage chamber and having an end portion with a planar surface, with an access opening on the planar surface that is in fluid communication with the gas storage chamber, the liner further including a raised circular ring extending from the planar surface and surrounding the access opening.
- the assembly also includes a polar boss having a longitudinally extending part that has a top surface with a recessed opening, and a planar bottom surface, with a channel extending through the polar boss and communicating with the recessed opening and terminating at the bottom planar surface to serve as a passageway through the polar boss, the polar boss further including a circular groove provided on the bottom flat surface, the circular groove having side walls with threads provided on the side walls of the groove, with the raised ring received inside the circular groove and threadably engaged to each other.
- An outer shell is provided around the entirety of the liner, with the outer shell having an edge-defining aperture that receives the polar boss.
- the present invention may be used for tanks, especially portable tanks, such as scuba tanks and oxygen tanks used by firefighters and the like.
- FIG. 1 is an exploded perspective view of a pressure vessel in accordance with an embodiment of the present invention.
- FIG. 4 is an expanded view illustrating the details of the raised ring shown with threads.
- FIG. 6 is an exploded view illustrating how a fitting body is used with the pressure vessel of FIG. 1 .
- FIG. 2 is a cut-away view of an end portion 50 of the pressure vessel 10 showing the closure assembly, which includes a polar boss 16 .
- An aperture-defining edge 22 in the pressure vessel 10 defines an access opening for receiving the polar boss 16 , and for permitting fluid to be introduced into and removed from the gas storage chamber 32 inside the liner 12 .
- the liner 12 is contiguous with and has a radial outer surface 24 that contacts the inner surface 26 of the outer shell 14 in its entirety, except in the proximity of the access opening, where a radially extending part 28 of the polar boss 16 is interposed between an interfacing portion of the radial inner surface 26 of the outer shell 14 and the radial outer surface 24 of the liner 12 .
- a longitudinally extending part 30 of the polar boss 16 extends through the access opening and away from the gas storage chamber 32 to define a neck portion of the pressure vessel 10 .
- the generally annular side wall 46 of the longitudinally extending part 30 is sized and configured to allow the polar boss 16 to be tightly fitted inside the aperture-defining edge 22 of the outer shell 14 .
- the side wall 46 extends from the flat top surface 34 , curves inwardly and then transitions into the radially extending part 28 .
- a circular groove 48 is provided on the bottom flat surface 44 .
- the inside surface 60 of the side walls of the groove 48 is provided with a male tapered thread 62 that is similar to a male tapered pipe thread and female tapered threads 66 .
- the tapered surfaces can use the standard National Pipe Thread (NPT) taper of 1.79 degrees, or another degree setting depending on the need.
- NPT National Pipe Thread
- tapered threads are used instead of straight threads because the raised ring 56 on the liner 12 will be compressed between the two thread surfaces which will increase the sealing function of the threads.
- the present invention provides numerous benefits when compared with conventional polar boss assemblies.
- Third, the present invention allows the polar boss 16 to be assembled to the liner 12 after the liner 12 has been molded or fabricated.
- the machining tolerances of the liner surface are increased at the location of the planar section 54 of the liner 12 .
- Fifth, the present invention can be used to join dissimilar materials such as plastic and metal, different metals, different plastics, etc.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A polar boss suitable for use in pressurized-gas assemblies. The polar boss includes a longitudinally extending part with a top surface with a recessed opening and a planar bottom surface. A channel extends through the polar boss, communicates with the recessed opening, and terminates at the bottom planar surface to serve as a passageway through the polar boss. A circular groove is provided on the planar bottom surface with inner and outer side walls, with helical threading provided on the inner and outer side walls.
Description
- This Patent Application is a continuation of U.S. patent application Ser. No. 14/514,070, filed Oct. 14, 2014, which claims priority to U.S. Pat. No. 8,881,932, filed Jun. 25, 2013, the contents of which are incorporated herein by their reference.
- 1. Field of the Invention
- This invention relates to storage tanks having liners, especially storage tanks with plastic liners used for storing compressed gaseous fuels. In particular, the present invention is related to a closure assembly for a pressure vessel, which is also a term used to describe such storage tanks.
- 2. Description of the Prior Art
- Pressure vessels are widely used to store liquids and gases under pressure. One growing application of pressure vessels is their use in the storage of alternative 15 fuels, such as natural gas, hydrogen or propane, for use in vehicles such as automobiles. Natural gas and propane are increasingly viewed as preferable to gasoline for fueling vehicles. Accordingly, approaches have been devised for converting gasoline-fueled vehicles to natural gas-fueled or propane-fueled vehicles by retrofitting them to use natural gas or propane instead of gasoline. Additionally, new vehicles are currently being built which are designed to operate using natural gas or propane as the fuel source.
- Vessels used for storing natural gases and propane preferably are equipped with a plastic liner, which serves to keep the stored gas from leaking. For a conventional pressure vessel, the liner is overwrapped with composite fibers and epoxy resin to form an outer shell of the pressure vessel. The plastic liner preferably covers the entire interior surface of the pressure vessel, including the neck portion, which defines an access opening for loading fuel. To prevent leakage of fuel at the access opening, a metallic polar boss is roto-molded or injection molded with the liner, and an adapter is installed into the polar boss to finish sealing the liner, and to allow for other metallic parts to attach to the pressure vessel.
- The polar boss assemblies for such conventional pressure vessels are therefore provided with two machined parts (i.e., the adapter and the polar boss).
- This can be disadvantageous as the seal surface of the liner has tight tolerances, and several steps are required to complete the assembly. In addition, in certain of these conventional pressure vessels, additional parts, such as an O-ring or other sealing means, may also be required, thereby further complicating the construction and sealing abilities.
- It is an object of the present invention is to provide an improved polar boss assembly for use with a composite pressure vessel that has a simplified construction with effective sealing capabilities.
- It is another object of the present invention to provide a high strength metallic (steel or aluminum) polar boss to a low strength metallic (steel or aluminum) liner.
- To accomplish the objectives set forth above, the present invention provides a pressurized-gas storage assembly having a liner defining a gas storage chamber and having an end portion with a planar surface, with an access opening on the planar surface that is in fluid communication with the gas storage chamber, the liner further including a raised circular ring extending from the planar surface and surrounding the access opening. The assembly also includes a polar boss having a longitudinally extending part that has a top surface with a recessed opening, and a planar bottom surface, with a channel extending through the polar boss and communicating with the recessed opening and terminating at the bottom planar surface to serve as a passageway through the polar boss, the polar boss further including a circular groove provided on the bottom flat surface, the circular groove having side walls with threads provided on the side walls of the groove, with the raised ring received inside the circular groove and threadably engaged to each other. An outer shell is provided around the entirety of the liner, with the outer shell having an edge-defining aperture that receives the polar boss.
- The present invention may be equipped in conventional tanks, including those having cylindrical configurations, as well as conformable tanks of the type described below. The assemblies may be installed in various types of vehicles, including, without limitation, automobiles, trucks, sports utility vehicles, military vehicles, and the like.
- In addition, the present invention may be used for tanks, especially portable tanks, such as scuba tanks and oxygen tanks used by firefighters and the like.
-
FIG. 1 is an exploded perspective view of a pressure vessel in accordance with an embodiment of the present invention. -
FIG. 2 is a cross-sectional view of the closure assembly of the pressure vessel ofFIG. 1 . -
FIG. 3 is an expanded view illustrating the details of the groove of the polar boss. -
FIG. 4 is an expanded view illustrating the details of the raised ring shown with threads. -
FIG. 5 is an expanded view illustrating the details of the raised ring shown without threads. -
FIG. 6 is an exploded view illustrating how a fitting body is used with the pressure vessel ofFIG. 1 . - The following detailed description is of the best presently contemplated modes of carrying out the invention. This description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating general principles of embodiments of the invention. The scope of the invention is best defined by the appended claims.
-
FIG. 1 illustrates apressure vessel 10 according to the present invention. Thepressure vessel 10 includes aliner 12 and anouter shell 14 that is formed by wrapping composite fibers and epoxy resin. Even thoughFIG. 1 shows half of theouter shell 14, it will be appreciated by one skilled in the art that theouter shell 14 extends completely around theliner 12. The construction and assembly of theliner 12 and theouter shell 14 are well-known in the art and shall not be described further herein. -
FIG. 2 is a cut-away view of anend portion 50 of thepressure vessel 10 showing the closure assembly, which includes apolar boss 16. An aperture-definingedge 22 in thepressure vessel 10 defines an access opening for receiving thepolar boss 16, and for permitting fluid to be introduced into and removed from thegas storage chamber 32 inside theliner 12. Theliner 12 is contiguous with and has a radialouter surface 24 that contacts theinner surface 26 of theouter shell 14 in its entirety, except in the proximity of the access opening, where a radially extendingpart 28 of thepolar boss 16 is interposed between an interfacing portion of the radialinner surface 26 of theouter shell 14 and the radialouter surface 24 of theliner 12. A longitudinally extendingpart 30 of thepolar boss 16 extends through the access opening and away from thegas storage chamber 32 to define a neck portion of thepressure vessel 10. - As shown in
FIG. 2 , the longitudinally extendingpart 30 of thepolar boss 16 has a generallyflat top surface 34 with arecessed opening 36 that transitions into a firststepped channel 38 that further transitions via atapered step 40 into alongitudinal channel 42 that serves as a passageway through the body of thepolar boss 16. One end of thechannel 42 communicates with the opening 36 and thestepped channel 38, and the other end of thechannel 42 terminates at the bottomflat surface 44 of thepolar boss 16. Therefore, thechannels opening 36 together serve as a passageway through which the gas can be removed from thegas storage chamber 32. - The generally
annular side wall 46 of the longitudinally extendingpart 30 is sized and configured to allow thepolar boss 16 to be tightly fitted inside the aperture-definingedge 22 of theouter shell 14. In a non-limiting example shown inFIG. 2 , theside wall 46 extends from theflat top surface 34, curves inwardly and then transitions into the radially extendingpart 28. Acircular groove 48 is provided on the bottomflat surface 44. As best shown inFIG. 3 , theinside surface 60 of the side walls of thegroove 48 is provided with a maletapered thread 62 that is similar to a male tapered pipe thread and femaletapered threads 66. The tapered surfaces can use the standard National Pipe Thread (NPT) taper of 1.79 degrees, or another degree setting depending on the need. - Referring to both
FIGS. 1 and 2 , theliner 12 has a generally convex orcurved section 52 at theend portion 50, but there is a generally flat orplanar section 54 at about the center of theconvex section 52. An access opening 55 is provided at the center of thisplanar section 54 and adapted to be aligned with thechannel 42. Referring also toFIG. 4 , a circular raisedring 56 is provided on theplanar section 54 at the location where theliner 12 and thepolar boss 16 meet, and surrounding the access opening 55. The raisedring 56 has taperedouter sides 70, similar to the inside surface in thegroove 48, and are adapted to be threadably engaged therewith. Theside walls 70 of thering 56 can have female andmale threads threads groove 48. Thethreads threads - Alternatively, as shown in
FIG. 5 , theside walls 70 of thering 56 do not need to be threaded as thethreads ring 56 as thepolar boss 16 is secured to theliner 12. - The tapered threads are used instead of straight threads because the raised
ring 56 on theliner 12 will be compressed between the two thread surfaces which will increase the sealing function of the threads. - In this regard, the material of the
ring 56 on theliner 12 will be squeezed together as thepolar boss 16 is screwed onto theliner 12 as shown inFIG. 1 . This squeezing of the liner material and the taperedthreads polar boss 16 and theliner 12 at theend portion 52, and will hold the liner material together and not allow theliner 12 to move away from, or relax from, a single tapered thread surface. - After the
polar boss 16 has been secured to theliner 12, theouter shell 14 can be formed by filament-winding the filaments according to methods that are well-known in the art. When theouter shell 14 is completed, theouter shell 14 will further secure thepolar boss 16 in position at theplanar section 54 of theliner 12, as shown inFIG. 2 . - Referring to
FIG. 6 , afitting body 80 is received in thechannel 42 for hermetically sealing thepressure vessel 10. Thefitting body 80 includeshead portion 84, and atubular extension 82 protruding from thehead portion 84. Anannular shoulder 86 is defined at an end of thehead portion 84, with theannular shoulder 86 having an inner circumference defined by thetubular extension 82. As shown inFIG. 6 , when thefitting body 80 is received into thechannel 42, thetubular extension 82 extends through thechannel 42 to protrude towards thegas storage chamber 32, and theannular shoulder 86 faces towards the recessedopening 36. Rotation of thefitting body 80 relative to thepolar boss 16 in the appropriate tightening direction mechanically interlocks thefitting body 80 in thepolar boss 16. - The
outer shell 14 is preferably made of a filament-wound composite material glass, aramid, or carbon fibers reinforced with an epoxy or ester resin system. - The
liner 12 may be formed from a thermoplastic or thermosetting material. Suitable materials for forming the plastic liner include, for example, polyamides, such as nylon 6, nylon 11, andnylon 12; polyethylene; polypropylene; polyurethane; and blends and copolymers thereof. Theliner 12 may also comprise a metal or metal alloy. Theliner 12 can also be formed by blow-molding, roto-molding, other molding techniques known in the art. - Representative materials for making the
polar boss 16 include, by way of example, metals, such as aluminum; alloys, such as steel; and/or plastics. - Representative materials for making the O-ring include, by way of example, nitrile-based compounds such as NBR; ethylene propylene copolymers; fluorocarbons; fluorosilicone; neoprene; and silicone.
- Representative materials for making the
fitting body 80 include, by way of example, metals, such as aluminum; alloys, such as steel; and/or plastics. - The present invention provides numerous benefits when compared with conventional polar boss assemblies. First, instead of using having two machined parts (i.e., the adapter and the polar boss), the present invention omits the adapter and only provides the polar boss. Second, the need for an O-ring is eliminated by the present invention. Third, the present invention allows the
polar boss 16 to be assembled to theliner 12 after theliner 12 has been molded or fabricated. Fourth, the machining tolerances of the liner surface are increased at the location of theplanar section 54 of theliner 12. Fifth, the present invention can be used to join dissimilar materials such as plastic and metal, different metals, different plastics, etc. Sixth, the present invention can be used on any type of tank liner, including blow-molded liners, roto-molded liners, injection-molded liners and metallic liners. Seventh, the tapered surfaces do not need to be threaded, so a friction weld and/or a bonding agent can be used to join the respective surfaces. Straight threads can also be used with a sealing material, an O-ring, a gasket, a putty, bubble gum, a tree sap, or similar material. - While the description above refers to particular embodiments of the present invention, it will be understood that many modifications may be made without departing from the spirit thereof. The accompanying claims are intended to cover such modifications as would fall within the true scope and spirit of the present invention.
Claims (10)
1-3. (canceled)
4. A polar boss comprising:
a longitudinally extending part that has a top surface with a recessed opening;
a planar bottom surface;
a channel extending through the polar boss and communicating with the recessed opening and terminating at the bottom planar surface to serve as a passageway through the polar boss; and
a circular groove provided on the planar bottom surface;
wherein the circular groove comprises an inner side wall and an outer side wall, with a first set of helical threads provided on the inner side wall and a second set of helical threads provided on the outer side wall.
5. The polar boss of claim 4 wherein the first set of helical threads, the second set of helical threads, or both comprise tapered threading.
6. The polar boss of claim 5 wherein the tapered threading comprises a taper of about 1.79 degrees.
7. The polar boss of claim 4 wherein the first set of helical threads, the second set of helical threads, or both are configured to form or cut threads into a raised circular ring of a liner if the polar boss is screwed onto the liner with the raised circular ring engaging within the circular groove.
8. The polar boss of claim 4 wherein the first set of helical threads, the second set of helical threads, or both comprise straight threading.
9. The polar boss of claim 4 wherein the channel and the recessed opening are configured to receive a fitting body to hermetically seal the channel along the top surface of the longitudinally extending part.
10. The polar boss of claim 4 , wherein the polar boss is formed from a metal material.
11. The polar boss of claim 4 , wherein the polar boss is formed from a plastic material.
12. The polar boss of claim 7 wherein the polar boss is configured to compress the raised circular ring within the circular groove if the polar boss is screwed onto the liner.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/405,917 US20170191622A1 (en) | 2013-06-25 | 2017-01-13 | Polar boss component for pressurized-gas storage assembly |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/926,219 US8881932B1 (en) | 2013-06-25 | 2013-06-25 | Adapterless closure assembly for composite pressure vessels |
US14/514,070 US9568150B2 (en) | 2013-06-25 | 2014-10-14 | Method of fabricating a pressurized-gas storage assembly |
US15/405,917 US20170191622A1 (en) | 2013-06-25 | 2017-01-13 | Polar boss component for pressurized-gas storage assembly |
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Application Number | Title | Priority Date | Filing Date |
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US14/514,070 Continuation US9568150B2 (en) | 2013-06-25 | 2014-10-14 | Method of fabricating a pressurized-gas storage assembly |
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US20170191622A1 true US20170191622A1 (en) | 2017-07-06 |
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US13/926,219 Active US8881932B1 (en) | 2013-06-25 | 2013-06-25 | Adapterless closure assembly for composite pressure vessels |
US14/514,070 Active US9568150B2 (en) | 2013-06-25 | 2014-10-14 | Method of fabricating a pressurized-gas storage assembly |
US15/405,917 Abandoned US20170191622A1 (en) | 2013-06-25 | 2017-01-13 | Polar boss component for pressurized-gas storage assembly |
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US13/926,219 Active US8881932B1 (en) | 2013-06-25 | 2013-06-25 | Adapterless closure assembly for composite pressure vessels |
US14/514,070 Active US9568150B2 (en) | 2013-06-25 | 2014-10-14 | Method of fabricating a pressurized-gas storage assembly |
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WO (1) | WO2014210154A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
US9568150B2 (en) | 2017-02-14 |
US20150040371A1 (en) | 2015-02-12 |
WO2014210154A1 (en) | 2014-12-31 |
US8881932B1 (en) | 2014-11-11 |
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