US 12,253,171 B2
End boss for type IV pressure vessel
Vladimir Kovalevsky, Rantigny (FR); and Jordan Sanches, San Francisco, CA (US)
Assigned to Linamar Corporation, Guelph (CA)
Appl. No. 17/623,381
Filed by Linamar Corporation, Guelph (CA)
PCT Filed Jun. 29, 2020, PCT No. PCT/US2020/070213
§ 371(c)(1), (2) Date Dec. 28, 2021,
PCT Pub. No. WO2020/264585, PCT Pub. Date Dec. 30, 2020.
Claims priority of provisional application 62/867,910, filed on Jun. 28, 2019.
Prior Publication US 2022/0373085 A1, Nov. 24, 2022
Int. Cl. F17C 1/02 (2006.01); F16J 12/00 (2006.01); F17C 1/06 (2006.01)
CPC F16J 12/00 (2013.01) [F17C 1/06 (2013.01); F17C 2201/0109 (2013.01); F17C 2203/066 (2013.01); F17C 2223/036 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A pressure vessel for containing liquids and/or gases under pressure, said pressure vessel comprising:
a polymeric liner comprising a hollow body defined by an elongated cylindrical wall having opposing inner and outer surfaces extending between a first terminal end and a second terminal end of said liner, said liner including an inlet opening near said first terminal end of said liner, said inlet opening defined by a flare edge of said liner;
an outer composite shell comprising resin and fibers, said outer composite shell surrounding an outer periphery of said liner;
a boss having a bore passing axially through said boss, said bore defined by a cylindrical wall having an interior surface, said bore in fluid communication with an interior of said pressure vessel;
said boss having a shank with opposing inner and outer bearing surfaces, said inner bearing surface oriented towards said outer surface of said liner, and said outer bearing surface oriented towards said outer composite shell;
said shank including a plurality of spikes fixedly coupled to said shank and projecting radially away from said outer bearing surface, each of said plurality of spikes being at least partially embedded into said outer composite shell;
said flare edge of said polymeric liner being fixedly coupled to said boss;
said outer composite shell formed by braiding a plurality of fiber strands around said liner and said shank of said boss to form a layer of braided fiber strands;
each of said plurality of fiber strands comprises a plurality of fiber filaments, said each of said plurality of fiber strands having a nominal strand width; and
each pair of adjacent spikes having respective spike tips being spaced apart by at least said nominal strand width.