# US 10,501,914 B2 · Coupling device and a faucet assembly having the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,914 B2 - Document ID: US10501914B2 - Status: Granted - Kind: B2 - Application number: 15/865,465 - Filed: 2018-01-09 - Published: 2018-11-08 - Granted: 2019-12-10 - Earliest claimed: 2017-05-03 - Applicants: Ming-Shuan Lin - Inventors: Ming-Shuan Lin - Web page: https://patentgrep.com/patent/US10501914B2 ## CPC - E03C 1/0401: {Fixing a tap to the sanitary appliance or to an associated mounting surface, e.g. a countertop} - E03C 1/0403: {Connecting the supply lines to the tap body} - E03C 2001/0414: {allowing different orientations of the spout or the outlet nozzle} - E03C 2001/0416: {using a socket for mounting of faucet} - E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS ## Abstract A coupling device includes a metal fixing plate adjacent to a faucet body, a plastic connecting plate having a surrounding portion that is connected to the fixing plate, an extending portion that extends from the surrounding portion through the fixing plate, and an engaging portion that is formed with a plurality of engaging grooves adapted to be engaged with engaging portions of a switch base, and a metal reinforcing plate connected to the engaging portion and formed with a plurality of guiding holes being respectively in spatial communication with the engaging grooves. Each guiding holes is adapted for withdrawal of a respective engaging portion of the switch base therethrough from a respective one of the engaging grooves. ## Claims ### Claim 1 A coupling device adapted for coupling a faucet body onto a switch base, the faucet body having a connecting portion, the switch base having a plurality of engaging portions, said coupling device comprising: a fixing plate that has a circular fixing plate body made of metal and being adjacent to the connecting portion of the faucet body, and that is formed with an extension hole; a connecting plate that is made of plastic, and that has a ring-shaped surrounding portion connected to an end of said fixing plate body that is adapted to be opposite to the connecting portion of the faucet body, an extending portion extending from said surrounding portion through said extension hole of said fixing plate, and an engaging portion extending from said surrounding portion in a direction opposite to said extending portion, and formed with a plurality of angularly spaced-apart engaging grooves that are adapted to be respectively engaged with the engaging portions of the switch base; and a reinforcing plate that has a ring-shaped reinforcing plate body made of metal, connected to said engaging portion of said connecting plate, adapted to be adjacent to the switch base, and having a periphery that is formed with a plurality of guiding holes being respectively in spatial communication with said engaging grooves, each of said guiding holes being adapted for withdrawal of a respective one of the engaging portions of the switch base therethrough from a respective one of said engaging grooves. ### Claim 2 (depends on 1) The coupling device as claimed in claim 1, further comprising a plurality of threaded components extending threadedly through said fixing plate, said connecting plate, and said reinforcing plate. ### Claim 3 (depends on 1) The coupling device as claimed in claim 1, wherein: said connecting plate further has a plurality of securing blocks, each of said securing blocks being disposed in an end section of a respective one of said engaging grooves which is opposite to a respective one of said guiding holes; said coupling device is rotatable from a lock position, where each of the engaging portions of the switch base is disposed in said end section of a respective one of said engaging grooves, to an unlock position, where the engaging portions of the switch base are registered respectively with said guiding holes of said reinforcing plate to permit the withdrawal of the engaging portions from said engaging grooves, respectively; and when said coupling device is at the lock position, said securing blocks are adapted to be respectively in contact with the engaging portions of the switch base, thereby securing said coupling device at the lock position. ### Claim 4 A faucet assembly comprising: a faucet body including a main unit that has a housing having a mounting opening, and a connecting portion disposed in said housing, and including a base wall and two water pipes that extend from said base wall toward said mounting opening; and an operating unit connected to said main unit; a switch base including a seat unit that has a base seat, a plurality of angularly spaced-apart engaging portions mounted to said base seat, and two inlet portions extending through said base seat, and an inlet unit that is rotatable mounted on said base sea, and that has two linking pipes; and a coupling device including a fixing plate that has a circular fixing plate body made of metal and being adjacent to said connecting portion of said faucet body, and that is formed with an extension hole, a connecting plate that is made of plastic, and that has a ring-shaped surrounding portion connected to an end of said fixing plate body that is opposite to said connecting portion of said faucet body, an extending portion extending from said surrounding portion through said extension hole of said fixing plate, and an engaging portion extending from said surrounding portion in a direction opposite to said extending portion, and formed with a plurality of angularly spaced-apart engaging grooves that are respectively engaged with said engaging portions of said switch base, and a reinforcing plate that has a ring-shaped reinforcing plate body made of metal, connected to said engaging portion, being adjacent to said switch base, sleeved on said linking pipes, and having a periphery that is formed with a plurality of guiding holes being respectively in spatial communication with said engaging grooves; wherein said coupling device is rotatable from a lock position, where each of said engaging portions of said switch base is disposed in an end section of a respective one of said engaging grooves, to an unlock position, where said engaging portions of said switch base are registered respectively with said guiding holes of said reinforcing plate to permit withdrawal of said engaging portions from said engaging grooves, respectively; and wherein said linking unit is co-rotatable with said coupling device, such that said linking pipes are respectively aligned with said inlet portions of said seat unit and are respectively aligned with said water pipes when said coupling device is at the lock position, and such that said linking pipes are misaligned with said inlet portions of said seat unit and are misaligned with said water pipes when said coupling device is at the unlock position. ### Claim 5 (depends on 4) The faucet assembly as claimed in claim 4, wherein said coupling device further includes a plurality of threaded components extending threadedly through said fixing plate, said connecting plate, and said reinforcing plate. ### Claim 6 (depends on 4) The faucet assembly as claimed in claim 4, wherein: said connecting plate further has a plurality of securing blocks, each of said securing blocks being disposed in said end section of a respective one of said engaging grooves which is opposite to a respective one of said guiding holes; and when said coupling device is at the lock position, said securing blocks are respectively in contact with said engaging portions of said switch base, thereby securing said coupling device at the lock position.