# US 11,078,654 B2 · Kitchen sink and the method of installing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,078,654 B2 - Document ID: US11078654B2 - Status: Granted - Kind: B2 - Application number: 16/100,357 - Filed: 2018-08-10 - Published: 2019-02-14 - Granted: 2021-08-03 - Earliest claimed: 2017-08-11 - Applicants: Poh Yong Tony Chia - Inventors: Poh Yong Tony Chia - Web page: https://patentgrep.com/patent/US11078654B2 ## CPC - E03C 1/335: {the fastening means comprising a screw} - E03C 1/18: Sinks, whether or not connected to the waste-pipe - F16B 2/065: {using screw-thread elements (F16B2/08 - F16B2/12 take precedence)} - F16B 2/12: using sliding jaws - F16B 35/06: Specially-shaped heads (special shape in order to rotate the bolt F16B23/00 {; separate hook adaptors for bolts F16B43/025}) - 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 - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) ## Abstract A kitchen sink and the method of installing the kitchen sink is disclosed. The kitchen sink for flush mounting onto a counter top having a recess for the sink, comprising one or a plurality of sink basins thereon; a deck having a substantially horizontal top surface and edges having a recess formed into a rim around the perimeter of the kitchen sink, wherein the top surface of the deck is adapted to be substantially flush with the counter top upon the sink is being mounted to the counter top, and the edges of the rim is being formed into a flange; four corners of the sink being formed rounded such that when the sink is installed into the recess on the edge of the hole opening in the counter top, the flange is substantially flush with the counter top at a level surface thereof, whereby the kitchen sink is being mounted in flush fit of the deck and the counter top. ## Claims ### Claim 1 A kitchen sink for flush mounting onto a countertop having a hole opening and a recess along the edge of the opening for the kitchen sink, comprising: (a) one or a plurality of sink basins thereon; (b) a deck having a substantially horizontal top surface and edges formed into a rim around the perimeter of the kitchen sink, wherein the top surface of the deck is adapted to be substantially flush with the counter top upon the sink is being mounted to the counter top, and the edges of the rim is being formed into a flange; (c) four corners of the sink being formed rounded such that when the sink is installed into the recess on the edge of the hole opening in the counter top, the flange is substantially flush with the counter top at a level surface thereof, whereby the kitchen sink is being mounted in flush fit of the deck with the counter top; and (d) a bracket mechanism having a U-channel stabilizing plate fitted onto an outer side of the sink basin, and a U-shaped bracket placed onto the U-channel stabilizing plate, wherein a top end of the U-shaped bracket has a hook for engaging an interior of the U-channel stabilizing plate, and a U-shape of the U-shaped bracket having a first top end at the hook and a second bottom end lowered than the hook. ### Claim 2 (depends on 1) The kitchen sink as set forth in claim 1, wherein two or more of the U-channel stabilizing plates are fitted onto the outer side of the sink basin and the U-shaped bracket has opposing holes for accommodating a bolt to pass through and tightening with a butterfly bolt head. ### Claim 3 (depends on 1) The kitchen sink as set forth in claim 1 wherein the bracket mechanism is fitted onto the outer side of the basin of the kitchen sink. ### Claim 4 (depends on 2) The kitchen sink as set forth in claim 2, wherein the U-channel stabilizing plate is provided with a U-channel formed at a lower end of the stabilizing plate. ### Claim 5 (depends on 1) The kitchen sink as set forth in claim 1, wherein the internal dimension of the sink basin having a single basin is 610 mm by 380 mm by 203 mm. ### Claim 6 (depends on 1) The kitchen sink as set forth in claim 1, wherein the internal dimension of the sink basin having dual basins, a big basin and a small basin, is 510 mm by 380 mm by 228 mm for the big basin, and is 250 mm by 380 mm by 178 mm for the small basin. ### Claim 7 (depends on 2) The kitchen sink as set forth in claim 2, wherein the U-shaped bracket is latched onto the U-channel stabilizing plate. ### Claim 8 (depends on 3) The kitchen sink as set forth in claim 3, wherein a butterfly bolt head is provided at one end of the bracket and a stopper foot is provided at the other end of the U-shaped bracket. ### Claim 9 (depends on 8) The kitchen sink as set forth in claim 8, wherein the butterfly bold head is turned until the stopper foot passes against the underside of the countertop. ### Claim 10 (depends on 7) The kitchen sink as set forth in claim 7, wherein the U-shaped bracket is tightened to the external lateral side of the sink. ### Claim 11 (depends on 8) The kitchen sink as set forth in claim 8, wherein the butterfly bolt is either 60 mm in length or 255 mm in length, which allows manual tightening of the sink. ### Claim 12 A method of installing a kitchen sink onto a counter top, comprising the steps of: (a) fabricating a hole opening on the countertop of dimension bigger than that of an outer edge of the kitchen sink but a smaller dimension than a rim edge of the kitchen sink; (b) making a recess along the perimeter of the opening, wherein the recess is configured to receive the edge of the kitchen sink such that a flange height of the kitchen sink matches a depth of the recess, and such that when the kitchen sink is installed onto the countertop, a flange top surface is flush with the countertop surface; and (c) utilizing a bracket mechanism having a U-channel stabilizing plate fitted onto an outer side of a sink basin, and a U shaped bracket placed onto the U-channel stabilizing plate, wherein a top end of the U-shaped bracket has a hook for engaging an interior of the U-channel stabilizing plate, and a U-shape of the U-shaped bracket having a first top end at the hook and a second bottom end lower than the hook. ### Claim 13 (depends on 12) The method of installing a kitchen sink as set forth in claim 12, wherein the corners of the opening on the counter top has a radius of 11 mm to receive the corners of the kitchen sink, which has corners rounded to radius of 11 mm. ### Claim 14 (depends on 12) The method of installing a kitchen sink as set forth in claim 12, wherein the bracket mechanism is installed on the outer side of the basins of the kitchen sink so as to adjust the level of the flange to ensure flushness to the counter top surface at any position of the U-channel stabilizing plate and also to secure the kitchen sink to the countertop. ### Claim 15 (depends on 12) The method of installing a kitchen sink as set forth in claim 12, wherein the recess round the opening is preferably 20 mm wide. ### Claim 16 (depends on 12) The method of installing a kitchen sink as set forth in claim 12, wherein the height or depth of the recess matches the height or depth of the flange of the kitchen sink so that the top surface of the kitchen sink is level plane with the top surface of the counter top. ### Claim 17 (depends on 1) The kitchen sink as set forth in claim 1, wherein the kitchen sink is made from a material selected from the group consisting of stainless steel, copper, brass and bronze. ### Claim 18 (depends on 12) The method of installing a kitchen sink as set forth in claim 12, wherein the kitchen sink is made from a material selected from the group consisting of stainless steel, copper, brass and bronze. ### Claim 19 (depends on 1) The kitchen sink as set forth in claim 1, wherein the countertop for the kitchen sink is made from a material selected from natural stone and artificial quartz stone. ### Claim 20 (depends on 12) The method of installing a kitchen sink as set forth in claim 12, wherein the countertop for the kitchen sink is made from a material selected from natural stone and artificial quartz stone.