Patent ID: 9022348
Filing Date: 2015-05-05
Classification: F16K

Abstract:
1. In a fluid related device comprising at least one seat assembly, a body assembly having a body, a closure member assembly movably positioned between said seat assembly and said body assembly, said closure member assembly has a closure member and a retaining ring assembly, said closure member has a boss defined by a cylindrical surface with a groove and a conical surface for engaging with a mating inside diameter conical surface of said seat assembly, said retaining ring assembly comprising an eccentric lock plug assembly, a locking ring assembly and a retaining ring, said retaining ring is defined by a conical outside surface, a cylindrical inside diameter surface engaged with said boss of said closure member, a front surface defined by said boss and said seat assembly, said retaining ring having a wedge groove on said inside diameter surface, defined by a conical surface with an angle less than 13 degree and a surface finish at least 63 RMS, said lock ring assembly is positioned between said wedge groove and said groove on the said boss, said lock ring assembly including a lock ring defined by a cylindrical inside diameter surface and a mating wedge surface engaged with said conical surface of said wedge groove for converting radial movements of said lock ring to axial movements of said retaining ring for securing a position of said seat assembly, said lock ring including at least two segments, each of said segments respectively including a base on said inside diameter surface and a retreat hole on said base, said closure member having at least two plug bores, each of said bores respectively extending to said groove and having a retreat slot for accessing said retreat hole, said eccentric lock plug assembly has at least two cylindrical lock plugs and two setscrews, each of said plugs respectively disposed in said plug bore of said closure member, said plug having an eccentric groove engaged with said base of said segment for locking engagements between said base and said eccentric groove by rotating said plug, said eccentric groove having an open slot extending to a thread hole to receive one of said setscrews for locking a rotary position of said plug by threading said setscrew against an inside diameter surface of said bore, each of said setscrews is respectively longer than said slot for preventing said setscrew from falling out of said slot, said retaining ring assembly comprising said retaining ring, three of said segments of said lock ring, three of said eccentric lock plugs with three of setscrews, said seat assembly and said closure member with three of said bores having (a) securing means for securing a pre-setting position of said seat assembly with said closure member (b) multiple anti-loose means for securing engagements between said seat assembly and said closure member, between said seat assembly and said retaining ring, between said retaining ring and said locking ring, between said plug and said locking ring, between said plug and said setscrew and between said plug and said closure member.