§
Luxuse
Patent Intelligence
Sign In
Patent US5133618A successfully refreshed from Google Patents.
← Back to Patent Explorer
US5133618A Expired / Lapsed US ⏱️ 0.0 years remaining

Rod end joint

Assignee: ICI CERAMICS Inc A CORP OF DELAWARE
•
Filing: 1991-01-11
•
Granted: 1992-07-28
•
Expires: 2011-01-11
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A joint for connecting a tip member to the end of a rod or shaft. The joint is particularly useful for joining a rod end to a tip member of a material which is not easily brazed, cemented or otherwise adhesively joined together. In the specific example described, a ceramic tip is jointed to the end of a metal rod, such as in a plug, a globe, or sliding stem valve. A cavity in the interior of the tip member has a narrowed opening at its top which terminates at a flat surface of the tip member. A pair of wedge members, each of about 180 degrees annular extent, and the headed bolt end are all located in the cavity, with the wedge members oppositely positioned around bolt head. The bolt head and wedge members have complementary tapers so that motion of the bolt away from the tip member cavity causes the wedge members to move radially away from each other and preferably contact the side wall of the cavity, with the cavity being partially closed by an annular overhang through which the bolt shank passes. The other end of the bolt is threaded and is received by a threaded hole in the end of the rod. The face of the rod is in surface contact with the surface of the tip member.

Inventors

  • 👤 Ibrahim Mentesh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 07:09
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; Y; Y10; Y10T; Y10T403/00; Y10T403/21; Y10T403/217; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7054; Y10T403/7062; Y10T403/7064; Y10T403/7066; Y10T403/7067; Y10T403/7069; Y10T403/76

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 185 words
A joint for coupling a rigid tip member to the end of a rigid shaft, the joint including a shaft having an end, a threaded, bolt-receiving hole opening to the shaft end, a headed threaded rigid bolt having one end thereof screwed into said shaft threaded hole, said bolt having an enlarged, flaring, tapered head at the other end thereof, a tip member having an end surface abutting said end of said shaft, said tip member having an internal cavity, the tip member having an integral shoulder overhand at its said surface which overhangs and partially closes said cavity and which forms an opening to the cavity from said tip member surface, the bottom of said overhand defining a surface which partially defines said cavity, said cavity having a side wall, a wedge member positioned within said cavity, said wedge member having a tapered surface in complementary surface contact with the tapered head of said bolt, said wedge member having an upper surface in at least partial surface contact with at least a portion of said shoulder overhand bottom surface, the bolt being under tension.
Claim 2
Dependent Claim 185 words
A joint for coupling a rigid tip member to the end of a rigid shaft, the joint including a shaft having an end, a threaded, bolt-receiving hole opening to the shaft end, a headed threaded rigid bolt having one end thereof screwed into said shaft threaded hole, said bolt having an enlarged, flaring, tapered head at the other end thereof, a tip member having an end surface abutting said end of said shaft, said tip member having an internal cavity, the tip member having an integral shoulder overhand at its said surface which overhangs and partially closes said cavity and which forms an opening to the cavity from said tip member surface, the bottom of said overhand defining a surface which partially defines said cavity, said cavity having a side wall, a wedge member positioned within said cavity, said wedge member having a tapered surface in complementary surface contact with the tapered head of said bolt, said wedge member having an upper surface in at least partial surface contact with at least a portion of said shoulder overhand bottom surface, the bolt being under tension.
Claim 3
Dependent Claim 25 words
The joint of claim 1 wherein a portion of the wedge member is also in surface contact with a portion of the cavity side wall.
Claim 4
Dependent Claim 15 words
The joint of claim 2 wherein there are at least two of said wedge members.
Claim 5
Dependent Claim 24 words
The joint of claim 3 wherein the bolt head and the wedge members are knurled over at least a portion of their surface contact.
Claim 6
Dependent Claim 46 words
The joint of claim 2 wherein each wedge member is annular and not greater than 180 degrees in annular extent, the maximum diameter of the bolt head being less than the diameter of the overhang opening, the cavity side wall and the overhang opening being annular.
Claim 7
Dependent Claim 11 words
The joint of claim 2 wherein the bolt head is conical.
Claim 8
Dependent Claim 15 words
The joint of claim 1 wherein said tip member is formed of a ceramic material.
Claim 9
Dependent Claim 16 words
The joint of claim 1 wherein the taper of the bolt head is about 45 degrees.

References Cited (Backward Citations)

US1880375A Cited
US2544712A Cited
US2469349A Cited
US2508039A Cited
FR1019693A Cited
US2999706A Cited
US3492032A Cited
US3812756A Cited
US4174008A Cited
GB2022756A Cited
US4287807A Cited
US4494347A Cited
US4470735A Cited
US4854793A Cited
US4815360A Cited
US4919579A Cited
US4898505A Cited
US4865246A Cited
US4927308A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-07-28 1996-01-27 1996-07-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-07-28 2000-01-27 2000-07-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-07-28 2004-01-27 2004-07-28 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag