# US 4,396,310 A · Clamping arrangement to join a hub with a shaft > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,396,310 A - Document ID: US4396310A - Status: Granted - Kind: A - Application number: 06/339,051 - Filed: 1982-01-12 - Granted: 1983-08-02 - Earliest claimed: 1981-01-14 - Inventors: Ralph Mullenberg - Web page: https://patentgrep.com/patent/US4396310A ## CPC - F16D 1/095: with clamping effected by ring contraction only {(for connecting two abutting shafts F16D1/02)} - Y10T 403/7056: Threaded actuator - Y10T 403/7062: Clamped members - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to a clamping arrangement to connect a hub with an inner structural part, in particular a shaft, including at least one outer taper ring having an inner conical surface tapered at a self-returning angle. The tapered ring cooperating with a tapered outer circumferential surface of a tub. Axially acting lock bolts, tension the tapered ring against the hub locking the assembly to the shaft. Wedge segments, distributed circumferentially and arranged axially between the taper ring and a counter-support on the hub, are provided. The wedges are displaced radially by means of radial release bolts and pressure the tapered ring axially off the conical surface of one hub releasing the same from the shaft. ## Claims ### Claim 1 An assembly for connecting at least one inner structural part having an outer cylindrical surface to a hub surrounding the inner structural part comprising: (a) at least one outer tapered ring, said outer tapered ring having an inner conical surface, said inner conical surface being tapered at a self-retaining angle; (b) a hub having an outer circumferential surface, a portion of said outer circumferential surface being conical, said inner conical surface cooperating with said outer circumferential surface; (c) means for tensioning said outer tapered ring against said hub; (d) a circumferential counter-support adjacent to said outer tapered ring; (e) a plurality of wedge segments axially arranged between said counter-support and said outer tapered ring, said wedge segments having at least one threaded radial bore therein; (f) and bolts threaded in said threaded bores, whereby said bolts radially displace said wedge segments and pressure said outer tapered ring axially from said circumferential conical surface. ### Claim 2 (depends on 1) The assembly defined in claim 1 wherein said outer tapered ring has a radial conical surface thereon, and said wedge segments are arranged between said radial conical surface and said counter-support. ### Claim 3 (depends on 1) The assembly defined in claim 1 wherein said counter-support has a radial conical surface thereon, and said wedge segments are arranged between said radial conical surface and said outer tapered ring. ### Claim 4 (depends on 1) The clamping assembly defined in claim 1 wherein said wedge segments also include at least a portion of an axial passage bore therethrough. ### Claim 5 (depends on 1) The clamping assembly defined in claim 1 wherein said wedge segments include at least one axial passage bore therein. ### Claim 6 (depends on 5) The clamping assembly defined in claim 5 wherein said wedge segments are a ring segment, said ring segments having two radial threaded bores therein and one axial passage bore intermediate said radial bores. ### Claim 7 (depends on 6) The clamping assembly defined in claim 6 wherein said ring segment further includes a third radial threaded bore therein and a second axial passage bore intermediate said third radial bore and said two radial bores. ### Claim 8 (depends on 2, 3) The clamping assembly defined in claims 2 or 3 wherein said radial conical surface tapers radially toward said inner structural member. ### Claim 9 (depends on 1) The clamping assembly defined in claim 1 wherein said outer tapered ring includes an outer structural part having an inner orifice, and a ring, said ring positioned inside said inner orifice, said ring carrying said inner conical surface. ### Claim 10 (depends on 9) The clamping assembly defined in claim 9 wherein: (a) said hub has a flange portion forming said counter-support at one end thereof, an extended portion having threads thereon at the other end thereof and intermediate said ends, a tapered portion having said outer circumferential surface thereon; (b) said outer structural part has a radial frontal face thereon facing said flange portion of said hub; (c) adjacent said outer structural part facing said counter-support is a separate tapered ring having sides, one side of said ring having a radially tapered surface thereon, said radially tapered surface facing said counter-support; (d) said wedge segments are positioned between said counter-support and said separate tapered ring; (e) and said means for tensioning said outer tapered ring against said hub is a threaded washer threaded onto said extended portion, said threaded washer axially displacing said ring into locking contact with said outer structural part or said hub and said inner structural member. ### Claim 11 (depends on 6) The clamping assembly defined in claim 6 wherein: (a) said counter-support is a portion of said hub; (b) said means for tensioning said outer tapered ring against said hub comprises: (i) a plurality of axial threaded bores in said outer tapered ring; (ii) a plurality of axial bores in said hub; (iii) and threaded bolts passing axially through said bores in said hub threaded into said outer tapered ring. ### Claim 12 (depends on 1) The assembly in claim 1 wherein: (a) said inner structural part comprises a pair of shaft ends; (b) a socket separates said shaft ends; (c) said hub has a pair of outer circumferential conical surfaces on its ends, said surfaces being at an angle which is self-retaining; (d) a pair of outer tapered rings are seated on said pair of outer circumferential surfaces; (e) a circumferential land surrounds said hub intermediate the ends thereof, said land being provided with a pair of frontal surfaces thereon, said frontal surfaces facing said outer tapered ring; (f) said wedge segments positioned between each of said frontal surfaces and each of said outer tapered rings; (g) said means for tensioning said outer tapered ring against said hub comprises: (i) a plurality of axial threaded bores in one of said outer tapered rings; (ii) a plurality of axial passage bores in said other outer tapered ring and said land in alignment with said axial threaded bores; and (iii) threaded bolts passing through said passage bores threaded into said threaded bores.