# US 6,719,324 B2 · Horn contact apparatus and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,719,324 B2 - Document ID: US6719324B2 - Status: Granted - Kind: B2 - Application number: 10/159,315 - Filed: 2002-05-31 - Published: 2003-10-02 - Granted: 2004-04-13 - Earliest claimed: 2002-03-29 - Assignees: Delphi Technologies, Inc. - Inventors: Scott R. Albers; David G. Greenisen; George Frank Richards - Web page: https://patentgrep.com/patent/US6719324B2 ## CPC - B60R 21/2037: {the module or a major component thereof being yieldably mounted, e.g. for actuating the horn switch or for protecting the driver in a non-deployment situation (horn switches integrated in steering wheel covers with tear lines B60R21/21658)} - B60Q 5/003: {mounted on the steering wheel} - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL ## Abstract An enclosed contact horn mechanism includes: a pin having a first end and a second end; a base plate located near the first end; and a device located between the first end and the base plate; the device, the first end, and the base plate creating an enclosed contact area, wherein the device is movable so that the base plate may contact the first end. ## Claims ### Claim 1 An enclosed contact horn mechanism comprising: a pin having a first end and a second end; a base plate located near said first end; and an insulating device located between said first end and said base plate; said insulating device, said first end, and said base plate creating an enclosed contact area, wherein said pin and said insulating device are configured so that said base plate may travel from a non-contacting open circuit position to a contacting closed circuit position. ### Claim 2 (depends on 1) The mechanism of claim 1, wherein said insulating device is connected to said base plate. ### Claim 3 (depends on 2) The mechanism of claim 2, further comprising a backing plate located and secured adjacent to said base plate, said backing plate defining a receiving area for receiving a portion of said insulating device and a portion of said pin. ### Claim 4 (depends on 3) The mechanism of claim 3, further comprising a biasing member for providing a biasing force to said insulating device, said biasing member being disposed between said insulating device and a steering wheel armature, said second end of said pin being secured to said steering wheel armature. ### Claim 5 (depends on 4) The mechanism of claim 4, wherein said base plate is in electrical communication with a power source and said second end is in electrical communication with a horn. ### Claim 6 (depends on 4) The mechanism of claim 4, wherein said receiving area comprises an opening for receiving a portion of said insulating device and said insulating device comprises an opening for slidably receiving a portion of said pin. ### Claim 7 (depends on 6) The mechanism of claim 6, wherein said opening of said receiving area is configured to receive a plurality of features of said insulating device. ### Claim 8 (depends on 7) The mechanism of claim 7, wherein said plurality of features prevents rotation of said insulating device within said receiving area. ### Claim 9 (depends on 8) The mechanism of claim 8 wherein said base plate is in electrical communication with a power source and said second end is in electrical communication with a horn. ### Claim 10 (depends on 1) The mechanism of claim 1, wherein a urethane washer is disposed within said enclosed contact area between said pin and said base plate. ### Claim 11 (depends on 10) The mechanism of claim 10, wherein said first end has an extension that extends from said first end, said extension having a dimension greater than said urethane washer and said extension is configured for making contact with said base plate. ### Claim 12 (depends on 11) The mechanism of claim 11, wherein said urethane washer is compressed as said base plate travels from said non-contacting open circuit position to said contacting closed circuit position. ### Claim 13 (depends on 5) The mechanism of claim 5, wherein said pin provides a means for securing an air bag module to said steering wheel armature. ### Claim 14 (depends on 13) The mechanism of claim 13, wherein a urethane washer is disposed within said enclosed contact area between said pin and said base plate and said first end has an extension that extends from said first end, said extension having a dimension greater than said urethane washer and said extension is configured for making contact with said base plate, wherein said urethane washer is compressed as said base plate travels from said non-contacting open circuit position to said contacting closed circuit position. ### Claim 15 (depends on 8) The mechanism of claim 8, wherein a urethane washer is disposed within said enclosed contact area between said pin and said base plate and said first end has an extension that extends from said first end, said extension having a dimension greater than said urethane washer and said extension is configured for making contact with said base plate, wherein said urethane washer is compressed as said base plate travels from said non-contacting open circuit position to said contacting closed circuit position. ### Claim 16 A horn switch comprising: a plurality of pins each having a first end and a second end, said second end being configured for securing an air bag module to a steering wheel armature; a base plate having a plurality of insulating devices one for each of said plurality of pins said insulating devices being located between said first end of said plurality of pins and said base plate, said plurality of insulating devices, said first ends, and said base plate creating a plurality of enclosed contact areas, wherein said pins and said insulating devices are configured so that said base plate may travel from a non-contacting open circuit position to a contacting closed circuit position. ### Claim 17 (depends on 16) The horn switch as in claim 16, wherein said insulating device is connected to said base plate and a backing plate is located and secured adjacent to said base plate, said backing plate defining a receiving area for receiving a portion of each of said insulating devices and a portion of each of said pins. ### Claim 18 (depends on 17) The horn switch as in claim 17, further comprising a plurality of biasing members for providing a biasing force to each of said insulating devices, said plurality of biasing members being disposed between said insulating devices and said steering wheel armature. ### Claim 19 (depends on 18) The mechanism of claim 18, wherein said base plate is in electrical communication with a power source and said second end of said plurality of pins are in electrical communication with a horn. ### Claim 20 (depends on 19) The mechanism of claim 19, wherein a urethane washer is disposed within each of said enclosed contact areas between said pins and said base plate and said first end of each of said plurality of pins has an extension that extends from said first end, said extension having a dimension greater than said urethane washer and said extension is configured for making contact with said base plate, wherein said urethane washer is compressed as said base plate travels from said non-contacting open circuit position to said contacting closed circuit position. ### Claim 21 An air bag module comprising: a base plate; a backing plate defining a plurality of areas each receiving an enclosed contact horn mechanism including: a pin having a first end and a second end, said first end located near said base plate, said pin having a means for securing the air bag module to a steering wheel armature; and an insulating device disposed between a portion of said pin proximate to said first end and said area, wherein said base plate, said insulating device and said pin create an enclosed contact area, wherein said first end is slidably received within said enclosed contact area, said pin and said insulating device are configured so that said base plate may travel from a non-contacting open circuit position wherein said base plate is in a spatial relationship with respect to said pin, to a contacting closed circuit position, wherein said base plate makes contact with said pin, said contacting closed circuit position activates a horn. ### Claim 22 (depends on 21) The air bag module as in claim 21, further comprising a biasing member for providing a biasing force to said insulating device, said biasing member being disposed between said insulating device and said steering wheel armature. ### Claim 23 (depends on 22) The air bag module as in claim 22, wherein said base plate is in electrical communication with a power source and said second end is in electrical communication with said horn. ### Claim 24 (depends on 23) The air bag module as in claim 23, wherein a urethane washer is disposed within said enclosed contact area between said pin and said base plate and said first end has an extension that extends from said first end, said extension having a dimension greater than said urethane washer and said extension is configured for making contact with said base plate, wherein said urethane washer is compressed as said base plate travels from said non-contacting open circuit position to said contacting closed circuit position. ### Claim 25 A steering wheel comprising: an air bag module comprising a base plate, a backing plate and a plurality of contact pins, said plurality of contact pins each being configured for a securement to a steering wheel armature at one end and movably received within an enclosed contact area at the other end; an insulating device for each of said plurality of contact pins, said insulating device being disposed between said pin and said backing plate, said insulating device defining a portion of said enclosed contact area; and a biasing member for providing a biasing force to said insulating device, said biasing member being disposed between said insulating device and said steering wheel armature, said biasing member maintaining said contact pin in a spaced relationship with respect to said base plate wherein application of a horn activation force to said air bag module causes said biasing force to be overcome and at least one of said plurality of contact pins makes contact with said base plate and completes a horn activation circuit. ### Claim 26 (depends on 25) The steering wheel as in claim 25, wherein a urethane washer is disposed within said enclosed contact area between said pin and said base plate and said pin has an extension that extends from pin, said extension having a dimension greater than said urethane washer and said extension is configured for making contact with said base plate, wherein said urethane washer is compressed as said base plate travels towards said extension.