# US 11,909,186 B2 · Coil spring cassette > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,186 B2 - Document ID: US11909186B2 - Status: Granted - Kind: B2 - Application number: 17/386,647 - Filed: 2021-07-28 - Published: 2021-11-18 - Granted: 2024-02-20 - Earliest claimed: 2019-02-23 - Assignees: KOSTAL Automobil Elektrik GmbH & Co. KG - Applicants: KOSTAL Automobil Elektrik GmbH & Co. KG - Inventors: Knut Moldenhauer; Raphael Kleine - Web page: https://patentgrep.com/patent/US11909186B2 ## CPC - H02G 11/006: {using extensible carrier for the cable, e.g. self-coiling spring (extensible conductors or cables H01B7/06)} - B60R 16/027: between relatively movable parts of the vehicle, e.g. between steering wheel and column {(devices for measuring, signalling or controlling tyre pressure or temperature specially adapted for mounting on vehicles B60C23/00)} - H02K 3/46: Fastening of windings on the stator or rotor structure - H02G 11/00: Arrangements of electric cables or lines between relatively-movable parts - H02G 11/02: using take-up reel or drum - H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract A coil spring cassette includes a stator housing part and a rotor housing part that is rotatable relative to the stator housing part about a longitudinal axis. The stator housing part and the rotor housing part together form therebetween a first chamber and a second chamber at respective positions along the longitudinal axis. A first flat cable with a reversal of winding direction is arranged in the first chamber. A second flat cable with a uniform winding direction is arranged in the second chamber. ## Claims ### Claim 1 A coil spring cassette comprising: a stator housing part; a rotor housing part that is rotatable relative to the stator housing part about a longitudinal axis; the stator housing part and the rotor housing part together form therebetween a first chamber and a second chamber at respective positions along the longitudinal axis; a first flat cable with a reversal of winding direction arranged in the first chamber; and a second flat cable with a uniform winding direction arranged in the second chamber. ### Claim 2 (depends on 1) The coil spring cassette of claim 1 wherein: the stator housing part includes an intermediate wall extending from a position along the longitudinal axis between the first chamber and the second chamber; and the first chamber being on one side of the intermediate wall and the second chamber being on an opposite side of the intermediate wall. ### Claim 3 (depends on 1) The coil spring cassette of claim 1 wherein: the first flat cable has a cross section that is thinner than a cross section of the second flat cable. ### Claim 4 (depends on 1) The coil spring cassette of claim 1 wherein: the second flat cable is thicker than the first flat cable. ### Claim 5 (depends on 1) The coil spring cassette of claim 1 wherein: the first flat cable is provided for transmitting relatively low electrical currents; and the second flat cable is provided for transmitting relatively high electrical currents. ### Claim 6 (depends on 1) The coil spring cassette of claim 1 wherein: the second flat cable is provided for transmitting high-frequency digital signals; and the first flat cable is provided for transmitting at least some signals other than high-frequency digital signals. ### Claim 7 (depends on 1) The coil spring cassette of claim 1 wherein: the stator housing part is a cylindrical stator housing part and the rotor housing part is a cylindrical rotor housing part. ### Claim 8 (depends on 1) The coil spring cassette of claim 1 wherein: the stator housing part and the rotor housing part are coaxially arranged about the longitudinal axis. ### Claim 9 (depends on 8) The coil spring cassette of claim 8 wherein: the rotor housing part is situated circumferentially inward with respect to the stator housing part. ### Claim 10 (depends on 1) The coil spring cassette of claim 1 wherein: the stator housing part is mechanically connectable to stationary elements of a steering column of a vehicle and the rotor housing part is mechanically connectable to a steering wheel of the vehicle whereby the rotor housing part is rotatable relative to the stator housing part about the longitudinal axis in correspondence with rotary actions of the steering wheel. ### Claim 11 A coil spring cassette comprising: a cylindrical stator housing part; a cylindrical rotor housing part; the stator housing part and the rotor housing part being coaxially arranged about a common longitudinal axis with the rotor housing part being situated circumferentially inward with respect to the stator housing part and with the rotor housing part being rotatable relative to the stator housing part about the common longitudinal axis; an outer surface of the rotor housing part and an inner surface of the stator housing part delimit a top chamber formed therebetween and a bottom chamber formed therebetween; a first flat cable having a reversal of winding direction, the first flat cable being positioned in one of the top chamber and the bottom chamber; and a second flat cable having a uniform winding direction, the second flat cable being positioned in the other one of the top chamber and the bottom chamber. ### Claim 12 (depends on 11) The coil spring cassette of claim 11 wherein: the top chamber and the bottom chamber are closed off with respect to one another and are situated in parallel to one another along the common longitudinal axis. ### Claim 13 (depends on 11) The coil spring cassette of claim 11 wherein: the stator housing part includes an intermediate wall which separates the top chamber and the bottom chamber from one another. ### Claim 14 (depends on 11) The coil spring cassette of claim 11 wherein: the first flat cable has a cross section that is thinner than a cross section of the second flat cable. ### Claim 15 (depends on 11) The coil spring cassette of claim 11 wherein: the second flat cable is thicker than the first flat cable. ### Claim 16 (depends on 11) The coil spring cassette of claim 11 wherein: the second flat cable is provided for transmitting high-frequency digital signals. ### Claim 17 (depends on 11) The coil spring cassette of claim 11 wherein: the second flat cable is provided for transmitting relatively high electrical currents. ### Claim 18 (depends on 11) The coil spring cassette of claim 11 wherein: the stator housing part is mechanically connectable to stationary elements of a steering column of a vehicle and the rotor housing part is mechanically connectable to a steering wheel of the vehicle whereby the rotor housing part is rotatable relative to the stator housing part about the common longitudinal axis in correspondence with rotary actions of the steering wheel. ### Claim 19 An assembly for a vehicle, comprising: a stator housing part that is mechanically connectable to stationary elements of a steering column of the vehicle a rotor housing part that is rotatable relative to the stator housing part about a longitudinal axis, the rotor housing part being mechanically connectable to a steering wheel of the vehicle whereby the rotor housing part is rotatable relative to the stator housing part about the common longitudinal axis in correspondence with rotary actions of the steering wheel; the stator housing part and the rotor housing part together form therebetween a first chamber and a second chamber at respective positions along the longitudinal axis; a first flat cable with a reversal of winding direction arranged in the first chamber; and a second flat cable with a uniform winding direction arranged in the second chamber. ### Claim 20 (depends on 19) The assembly of claim 19 wherein: the second flat cable is provided for high-speed data transmission to the steering wheel.