# US 8,540,093 B2 · Middle buffer coupling for rail-bound vehicles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,540,093 B2 - Document ID: US8540093B2 - Status: Granted - Kind: B2 - Application number: 13/120,350 - Filed: 2009-09-22 - Published: 2011-07-21 - Granted: 2013-09-24 - Earliest claimed: 2008-09-23 - Assignees: Era-Contract GmbH - Applicants: Thomas Paral - Inventors: Thomas Paral - Web page: https://patentgrep.com/patent/US8540093B2 ## CPC - B61G 5/02: for coupling articulated trains, locomotives and tenders or the bogies of a vehicle; Coupling by means of a single coupling bar; Couplings preventing or limiting relative lateral movement of vehicles - B61G 5/10: for electric cables - B61G: COUPLINGS; DRAUGHT AND BUFFING APPLIANCES (vehicle connections in general B60D) ## Abstract What is described is a middle buffer coupling for rail-bound vehicles, comprising two coupling halves (2, 2′) to be coupled together attached to vehicle parts (A, B), each of said coupling halves (2, 2′) comprising a coupling rod (8, 8′) with a coupling head (12, 12′), and comprising a connecting element (16) for manually connecting the two coupling heads (12, 12′). Disposed at each coupling head (12, 12′) is an electrical contact element (32, 34) for contacting with the contact element of the other respective coupling head (12, 12′) when the two coupling halves (2, 2′) are coupled. Routed within each coupling rod (8, 8′) are electrical lines (18, 18′) that lead from the contact elements (32, 34) of the associated coupling head (12, 12′) to the vehicle part (A, B) to which the coupling halves (2, 2′) comprising said coupling rods (8, 8′) are attached, respectively. ## Claims ### Claim 1 A middle buffer coupling for rail-bound vehicles, comprising: two coupling halves to be coupled together attached to respective vehicle parts, each of said coupling halves comprising a coupling rod with a coupling head; and a connecting element for manually connecting the two coupling heads; wherein each coupling head includes a plurality of electrical contact elements, the electrical contact elements being disposed in each coupling head for contacting with the electrical contact elements of the other respective coupling head when the two coupling halves are coupled together, and wherein each coupling rod is formed to be hollow and within each coupling rod electrical lines are routed, such that said electrical lines are positioned completely within the respective coupling rod and lead from the contact elements of the associated coupling head to the vehicle part to which the coupling halves comprising said coupling rods are attached. ### Claim 2 (depends on 1) The middle buffer coupling according to claim 1, wherein each coupling head has a contact carrier at the face side thereof facing the respective other coupling head, in which contact carrier the contact elements are arranged. ### Claim 3 (depends on 2) The middle buffer coupling according to claim 2, wherein the contact carrier of one of the two coupling heads is formed as male connector and the contact carrier of the other coupling head is formed as female connector for receiving the male connector. ### Claim 4 (depends on 2) The middle buffer coupling according to claim 2, wherein the contact elements of one of the two coupling heads are mounted in axially resilient manner in the contact carrier and are biased in the coupling direction and the contact elements of the other coupling head are rigidly mounted in the contact carrier. ### Claim 5 (depends on 4) The middle buffer coupling according to claim 4, wherein the contact carrier of said one coupling head comprises a first plate having a plurality of axial first bores and a second plate attached to the first plate having a plurality of axial second bores aligned to the first bores, wherein the diameters of the second bores are respectively smaller than the diameters of the associated first bores, and one of the contact elements and a biasing element are respectively arranged in the first bores; wherein the respective contact element has an annular abutment and a contact head adjacent to the abutment, which is led through the associated second bore, and wherein the biasing element pushes the abutment onto the second plate in the coupling direction. ### Claim 6 (depends on 1) The middle buffer coupling according to claim 1, wherein each coupling head has an annular flange attached to the free end of the coupling rod and the connecting element is formed as shell-type sleeve, which surrounds the annular flanges lying adjacent to each other to connect the two coupling heads. ### Claim 7 (depends on 6) The middle buffer coupling according to claim 6, wherein the shell-type sleeve is formed from two uniform shell portions which can be connected together. ### Claim 8 (depends on 6) The middle buffer coupling according to claim 6, wherein at least a part of the contact elements of each coupling head is disposed at the outer surface of the annular flange and the shell-type sleeve includes bridge contacts at the inner surface thereof, which bridge contacts contact the contact elements disposed at the outer surface of the annular flanges. ### Claim 9 (depends on 8) The middle buffer coupling according to claim 8, wherein the contact elements arranged at the outer surface of the annular flange and/or the bridge contacts arranged at the inner surface of the shell-type sleeve are formed as contact springs. ### Claim 10 (depends on 6) The middle buffer coupling according to claim 6, wherein a part of the contact elements of each coupling head is intended for power transmission and another part for signal transmission, and one of the part of contact elements intended for power transmission and the part of contact elements intended for signal transmission are arranged at a face surface of the coupling head, while the respective other of the part of contact elements intended for power transmission and the part of contact elements intended for signal transmission are arranged at the outer surface of the annular flange. ### Claim 11 (depends on 1) The middle buffer coupling according to claim 1, wherein the electrical lines are crimped onto the contact elements. ### Claim 12 (depends on 1) The middle buffer coupling according to claim 1, wherein a part of the contact elements of each coupling head is intended for power transmission and another part for signal transmission. ### Claim 13 (depends on 1) The middle buffer coupling according to claim 1, wherein each coupling half comprises a housing part mounted in an articulated manner to the respective vehicle part, in which the corresponding coupling rod is resiliently received and that the electrical lines are led through the coupling rod and the housing part into the vehicle part. ### Claim 14 (depends on 13) The middle buffer coupling according to claim 13, wherein a buffer device is arranged in each coupling rod and/or in each housing part. ### Claim 15 (depends on 1) The middle buffer coupling according to claim 1, wherein each coupling head has at least one annular portion at the face surface thereof extending in the coupling direction, the annular height of which measured in the coupling direction varies in the circumferential direction, such that the annular portion fits on the annular portion of the respective other coupling head only in precisely one rotation position of the coupling heads with respect to each other.