# US 8,770,993 B2 · Connector assembly with polarity correction/protection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,993 B2 - Document ID: US8770993B2 - Status: Granted - Kind: B2 - Application number: 13/486,318 - Filed: 2012-06-01 - Published: 2013-12-05 - Granted: 2014-07-08 - Earliest claimed: 2012-06-01 - Assignees: Tyco Electronics Corporation - Applicants: Charles R. Gingrich, III; Raymond Howard Kohler; Marek T. Luksic - Inventors: Charles R. Gingrich, III; Raymond Howard Kohler; Marek T. Luksic - Web page: https://patentgrep.com/patent/US8770993B2 ## CPC - H01R 25/142: {Their counterparts} - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## Abstract A connector assembly for installing a device to a ceiling grid, the ceiling grid having conductors provided therein. The connector assembly includes a housing with contact arms mounted in the housing. Contact portions of the contact arms extend from the housing and are placed in electrical engagement with the conductors when the connector assembly is mated with the ceiling grid. Mounting members extend from the housing. Mounting sections of the mounting members are placed in mechanical engagement with the ceiling grid to provide a mechanical connection between the ceiling grid and the connector assembly. A polarity protection/correction member is provided in the housing. The polarity protection/correction member protects the device from failure or damage when the polarity orientation of the device does not match the polarity orientation of the conductors of the grid. ## Claims ### Claim 1 A connector assembly for installing a device to a ceiling grid, the ceiling grid having conductors provided therein, the connector assembly comprising: a housing; contact arms mounted in the housing, contact portions of the contact arms extend from the housing and are placed in electrical engagement with the conductors when the connector assembly is mated with the ceiling grid; mounting members extending from the housing, mounting sections of the mounting members are placed in mechanical engagement with the ceiling grid to provide a mechanical connection between the ceiling grid and the connector assembly; a polarity protection member positioned in the housing, the polarity protection member protects the device from failure or damage when the polarity orientation of the device does not match the polarity orientation of the conductors of the grid. ### Claim 2 (depends on 1) The connector assembly as recited in claim 1, wherein a cam member provided in the housing, the cam member being movable between a first position, in which the cam member allows the contact arms to be in their first position and the mounting members to be in their first position, and a second position, in which the cam member causes the contact arms and mounting members to be biased to their respective second positions. ### Claim 3 (depends on 2) The connector assembly as recited in claim 2, wherein the cam member has a substrate mounted in a substrate receiving area, the polarity protection member is positioned on the substrate. ### Claim 4 (depends on 3) The connector assembly as recited in claim 3, wherein, the cam member has wire connectors mounted on wire connector receiving portions, the wire connectors cooperate with wires extending from the device to terminate the wires to the wire connectors, the wire connectors provide electrical engagement of the wires to pads on the substrate when the substrate is properly positioned in the substrate receiving area. ### Claim 5 (depends on 3) The connector assembly as recited in claim 3, wherein contact pads are provided on the substrate to cooperate with contact projections of the contacts, whereby as the cam member is moved to a second position, the contact projections engage and are placed in electrical connection with the contact pads. ### Claim 6 (depends on 3) The connector assembly as recited in claim 3, wherein the substrate is a circuit board. ### Claim 7 (depends on 3) The connector assembly as recited in claim 3, wherein the polarity protection member provides polarity correction between the conductors of the ceiling grid and the device. ### Claim 8 (depends on 7) The connector assembly as recited in claim 7, wherein four switches provide the polarity correction, with two switches provided in electrical communication with each wire which extends from the device. ### Claim 9 (depends on 6) The connector assembly as recited in claim 6, wherein the polarity protection is provided by a surface mount technology Schottky diode. ### Claim 10 (depends on 6) The connector assembly as recited in claim 6, wherein the polarity protection is provided by a field effect transistor circuit. ### Claim 11 (depends on 1) The connector assembly as recited in claim 1, wherein an indicator circuit is provided to indicate to the end user that the polarity is reversed. ### Claim 12 (depends on 2) The connector assembly as recited in claim 2, wherein an indicator circuit is provided to indicate to the end user that the polarity is reversed, a portion of the cam member is made of a clear material to serve as a light pipe for the indicator circuit. ### Claim 13 (depends on 7) The connector assembly as recited in claim 7, wherein the polarity protection member is a surface mount technology diode based bridge with silicon rectifier diodes. ### Claim 14 (depends on 7) The connector assembly as recited in claim 7, wherein the polarity protection member is a single-package surface mount technology four MOSFET H bridge. ### Claim 15 (depends on 7) The connector assembly as recited in claim 7, wherein the polarity protection member is dual package complementary N and P channel MOSFET. ### Claim 16 A connector assembly for installing a device to a grid having flanges with conductors therein, the connector assembly comprising: a housing with contacts mounted in the housing, the contacts having contact arms which extend from a surface of the housing, contact portions of the contact arms positioned to make an electrical connection with the conductors of the grid when the connector assembly is mated with the grid; a first mounting member and a second mounting member movable between a first position in which grid mounting sections of the first and second mounting members are configured to not engage the flanges of the grid and a second position in which the grid mounting sections of the first and second mounting members are moved away from each other to engage the flanges of the grid to provide a mechanical connection between the grid and the connector assembly; a polarity member, the polarity member protects the device from failure or damage when the polarity orientation of the device does not match the polarity orientation of the conductors of the grid. ### Claim 17 (depends on 16) The connector assembly as recited in claim 16, wherein the polarity member is a circuit provided on a substrate and provides polarity protection between the conductors or the ceiling grid and the device. ### Claim 18 (depends on 3) The connector assembly as recited in claim 3, wherein the polarity member is circuit provided on a substrate and provides polarity correction between the conductors or the ceiling grid and the device. ### Claim 19 A connector assembly for installation on a ceiling grid having conductors therein, the connector assembly comprising: a housing; contact arms mounted in the housing, the contact arms having contact portions; mounting members mounted in the housing, the mounting members having grid mounting sections; a cam member provided in the housing, the cam member being movable between a first position and a second position; a polarity member, the polarity member protects the device from failure or damage when the polarity orientation of the device does not match the polarity orientation of the conductors of the grid; wherein as the cam member is moved from the first position to the second position, the cam member biases the contact portions of the contact arms into electrical engagement with the conductors of the ceiling grid and biases the grid mounting sections of the mounting members mechanical engagement with the ceiling grid to provide a mechanical connection between the ceiling grid and the connector assembly. ### Claim 20 (depends on 19) The connector assembly as recited in claim 19, wherein the polarity member is circuit provided on a substrate mounted in an opening of the cam member and provides polarity correction between the conductors or the ceiling grid and the device.