# US 5,702,132 A · Pivotal link > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,702,132 A - Document ID: US5702132A - Status: Granted - Kind: A - Application number: 08/356,291 - Filed: 1994-12-12 - Granted: 1997-12-30 - Earliest claimed: 1993-04-24 - Assignees: Gunter Kupczik; Phoenix Aktiengesellschaft - Inventors: Hans-Werner Friederich; Gunter Kupczik - Web page: https://patentgrep.com/patent/US5702132A ## CPC - F16L 11/081: {comprising one or more layers of a helically wound cord or wire (in combination with braided layers F16L11/088)} - F16L 11/112: having reinforcements embedded in the wall - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL ## Abstract Pivotal link (1) as a connection piece between two construction parts, whereby at least one construction part is supported rotatable around its horizontal axis. The essence of the invention consists in that the pivotal link consists of a hose or a hose-like body made of elastomeric material, whereby an embedded strength carrier (4) is present between the hose core (2) and the hose cover (3), said carrier consisting of threads forming one or multiple layers and extending at an angle .alpha. amounting to zero degrees based on the axial direction of the pivotal link, or only insignificantly deviating from zero degrees with a crossed arrangement of the threads; and that the pivotal link is additionally provided with rings (7), the latter being arranged in the radial direction. ## Claims ### Claim 1 Pivotal link having an axial direction X and a radial direction Y as a connection piece between two construction parts, with at least one construction part having means for being supported rotatable around its horizontal axis, said pivotal link comprising a hose having a hose core and a hose cover, and made of elastomeric material; said pivotal link having means for being supported rotatably around its horizontal axis; an embedded strength carrier located between the hose core and the hose cover, said carrier including threads forming at least one layer and extending at an angle .alpha. relative to the axial direction X of the pivotal link, said angle .alpha. ranging between zero degrees and .+-.5 degrees, only insignificantly deviating from zero degrees, with a crossed, arrangement of the threads; wherein the threads extending in the axial direction X of the pivotal link consist of an extensible material; wherein the threads extending in the axial direction X are additionally provided with threads extending at an angle .beta. relative to the radial direction Y of the pivotal link, said angle .beta. ranging between zero degrees and .+-.5 degrees with the threads extending at said angle .beta. ranging from crossed to uncrossed; and rings for the pivotal link engaging the hose and being arranged in the radial direction; and wherein the rings are arranged across the total length of the pivotal link and, in this connection, have approximately the same spacing Z relative to each other. ### Claim 2 (depends on 1) Pivotal link according to claim 1, wherein the hose is selected from the group consisting of a rubber based on polychloroprene (CR), natural rubber (NR), ethylene-propylene-diene copolymer (EDPM), styrene-butadiene rubber (SBR), fluorine rubber (FKM), isoprene rubber (IR), butadiene rubber (BR), nitrile rubber (NBR), butyl rubber (IIR), chlorinated or brominated butyl rubber (CIIIR or BrIIR), chlorosulphonated polyethylene (CSM), ethylene-vinyl acetate rubber (EVA), hydrogenated nitrile rubber (H-NBR), and the mixtures thereof. ### Claim 3 (depends on 1) Pivotal link according to claim 1, wherein the rings have a spacing Z of 30 to 1000 mm. ### Claim 4 (depends on 1) Pivotal link according to claim 1, wherein the rings are made of a material selected from the group consisting of steel and plastic monofilament. ### Claim 5 (depends on 1) Pivotal link according to claim 1, wherein the rings are arranged outside of the hose cover. ### Claim 6 (depends on 5) Pivotal link according to claim 5, wherein the rings are arranged in the grooves. ### Claim 7 (depends on 1) Pivotal link according to claim 1, wherein the rings are arranged within the hose cover. ### Claim 8 (depends on 1) Pivotal link according to claim 1, wherein the hose cover comprises a rib-groove system. ### Claim 9 (depends on 8) Pivotal link according to claim 8, wherein the rings are arranged within a zone of the ribs. ### Claim 10 (depends on 8) Pivotal link according to claim 8, wherein the ribs and the grooves are substantially wave-like in appearance. ### Claim 11 (depends on 8) Pivotal link according to claim 8, wherein the ribs are crown-shaped in appearance and the grooves are bow-shaped in appearance. ### Claim 12 (depends on 1) Pivotal link according to claim 1, further comprising a compensator made of elastomeric materials and has means for connection to at least said pivotal link for exclusively serving for length compensation. ### Claim 13 (depends on 12) Pivotal link according to claim 12, wherein the compensator has means for connection to a rigid, construction part. ### Claim 14 (depends on 1) The pivotal link of claim 1, wherein said pivotal link is a connection piece means between a rotary bow as the through-flow controlling device, and a duct. ### Claim 15 (depends on 1) The pivotal link of claim 1, wherein said pivotal link is a connection piece means in fixed pipeline construction. ### Claim 16 (depends on 1) The pivotal link of claim 1, wherein said pivotal link is a connection piece means with loosely laid pipelines. ### Claim 17 (depends on 1) Pivotal link according to claim 1, wherein the extensions material of the threads is a polyamide. ### Claim 18 (depends on 1) Pivotal link according to claim 1, wherein the rings have a spacing Z of 80 to 250 mm.