# US 6,279,488 B1 · Railway vehicle with coupling element units between car body and undercarriage > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,279,488 B1 - Document ID: US6279488B1 - Status: Granted - Kind: B1 - Application number: 09/402,944 - Filed: 1999-10-12 - Granted: 2001-08-28 - Earliest claimed: 1998-02-13 - Assignees: DaimlerChrysler Rail Systems GmbH - Inventors: Ulrich Hachmann; Thomas Benker; Uwe Schüller - Web page: https://patentgrep.com/patent/US6279488B1 ## CPC - B61F 5/14: Side bearings - B61F: RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES (for vehicles in general B60; axles or wheels B60B; vehicle tyres B60C) ## Abstract A coupling element unit with spring action is located between a car body and an undercarriage of a railway vehicle. To largely relieve the coupling element unit from forces that act at a right angle to the suspension direction, a sliding adapter is provided that has two sliding elements and that can be displaced with respect to one another parallel to a floor of the car body. ## Claims ### Claim 1 A railway vehicle, comprising an undercarriage and, located above it, a car body that is supported vertically by means of at least one pair of coupling element units with a spring action of an undercarriage frame of the undercarriage, wherein the coupling element unit has a sliding adapter with two sliding elements, wherein one of the sliding elements can be displaced freely in a plane that lies parallel to the floor of the car body over limited distances with respect to the other sliding element, wherein at least one of the sliding elements has two plates that are connected to one another by means of an insulating layer that lies parallel to the plane of displacement of the sliding adapter, wherein the insulating layer is a ring, and wherein on the plates there are suitable locator depressions in which the insulating layer is engaged. ### Claim 2 (depends on 1) The railway vehicle as claimed in claim 1, wherein the sliding adapter is a ball-mounted platform. ### Claim 3 (depends on 2) The railway vehicle as claimed in claim 2, wherein at least one of the sliding elements has two plates that are connected to one another by means of an insulating layer that lies parallel to the plane of displacement of the sliding adapter. ### Claim 4 (depends on 2) The railway vehicle as claimed in claim 2, wherein at least one of the sliding elements is firmly connected with at least one of the car body and the undercarriage frame. ### Claim 5 (depends on 2) The railway vehicle as claimed in claim 2, wherein at least one of the sliding elements is connected with a spring element, the spring travel of which is perpendicular to a plane of displacement of the sliding adapter. ### Claim 6 (depends on 2) The railway vehicle as claimed in claim 2, wherein located between the car body and the undercarriage is a transverse force coupling element with a controllable transverse adjustment travel. ### Claim 7 (depends on 1) The railway vehicle as claimed in claim 1, wherein at least one of the sliding elements is firmly connected with at least one of the car body and the undercarriage frame. ### Claim 8 (depends on 1) The railway vehicle as claimed in claim 1, wherein at least one of the sliding elements is connected with a spring element, the spring travel of which is perpendicular to a plane of displacement of the sliding adapter. ### Claim 9 (depends on 8) The railway vehicle as claimed in claim 8, wherein the spring element is passive. ### Claim 10 (depends on 8) The railway vehicle as claimed in claim 8, wherein the spring element is actively controlled. ### Claim 11 (depends on 10) The railway vehicle as claimed in claim 10, wherein the spring element is a hydro-pneumatically controlled hydraulic cylinder. ### Claim 12 (depends on 8) The railway vehicle as claimed in claim 8, wherein the spring element is fastened to at least one of the undercarriage frame and the car body. ### Claim 13 (depends on 8) The railway vehicle as claimed in claim 8, wherein the coupling element unit has a knuckle joint that is a ball-and-socket joint and is connected to at least one of the sliding adapter and the spring element. ### Claim 14 (depends on 1) The railway vehicle as claimed in claim 1, wherein the coupling element unit has a knuckle joint that is a ball-and-socket joint and is connected to at least one of the sliding adapter and a spring element. ### Claim 15 (depends on 1) The railway vehicle as claimed in claim 1, wherein a longitudinal force coupling element is located between the car body and the undercarriage. ### Claim 16 (depends on 1) The railway vehicle as claimed in claim 1, wherein located between the car body and the undercarriage is a transverse force coupling element with a controllable transverse adjustment travel. ### Claim 17 (depends on 16) The railway vehicle as claimed in claim 16, wherein a transverse adjustment travel of the transverse force coupling element is smaller than a free displacement travel of the sliding adapter. ### Claim 18 (depends on 1) The railway vehicle as claimed in claim 1, wherein at least one of the sliding elements is connected with a spring element, the spring travel of which is perpendicular to a plane of displacement of the sliding adapter.