# US 10,307,779 B2 · Dual-chambered bottles for storing and dispensing of fluid and semi-fluid materials > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,307,779 B2 - Document ID: US10307779B2 - Status: Granted - Kind: B2 - Application number: 15/144,548 - Filed: 2016-05-02 - Published: 2016-11-03 - Granted: 2019-06-04 - Earliest claimed: 2015-05-01 - Applicants: St&T Packaging Pte. Ltd. - Inventors: Michael Scott; Huankun Lao - Web page: https://patentgrep.com/patent/US10307779B2 ## CPC - B05B 11/1084: {each liquid or other fluent material being pumped by a separate pump} - B05B 11/0054: {Cartridges, i.e. containers specially designed for easy attachment to or easy removal from the rest of the sprayer (attachment arrangements between pump and container B05B11/1043)} - B05B 11/0038: {Inner container disposed in an outer shell or outer casing} - B05B 11/028: {Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container} - B05B 11/1047: {the pump being preassembled as an independent unit before being mounted on the container} - B05B 11/1074: {located outside pump chambers} - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) ## Abstract In one embodiment a fluid dispensing apparatus includes a first dispensing bottle configured to dispense a first liquid, a second dispensing bottle configured to dispense a second liquid, an exterior casing. The first dispensing bottle may include a first hollow, tubular internal chamber, a first moveable piston slidably housed within the first internal chamber, a first nozzle housing, and a first nozzle collar mounted on a top end of the first internal chamber and supporting the first nozzle housing. The first nozzle housing may include a first inlet, a first pump assembly, and a first dispensing nozzle. The second dispensing bottle may include a second hollow, tubular internal chamber, a second moveable piston slidably housed within the second internal chamber, a second nozzle housing, and a second nozzle collar mounted on a top end of the second internal chamber and supporting the second nozzle housing. The second nozzle housing may include a second inlet, a second pump assembly, and a second dispensing nozzle. The exterior casing may house the first and second internal chambers. The exterior casing may include an upper opening and a sleeve disposed thereon. The sleeve may have inner contours complementary to the first and second nozzle housings such that the first and second nozzle housings at least partially protrude through the sleeve. ## Claims ### Claim 1 A fluid dispensing apparatus comprising: a first dispensing bottle configured to dispense a first fluid or semi-fluid and comprising: a first hollow, tubular internal chamber; a first moveable piston slidably housed within the first internal chamber; a first nozzle housing comprising a first inlet, a first airless pump assembly, and a first dispensing nozzle, wherein the first nozzle housing comprises a substantially curved tear drop shape comprising a head portion and a tail portion and a first nozzle collar mounted on a top end of the first internal chamber and supporting the first nozzle housing; a second dispensing bottle configured to dispense a second fluid or semi-fluid and comprising: a second hollow, tubular internal chamber; a second moveable piston slidably housed within the second airless internal chamber; a second nozzle housing comprising a second inlet, a second pump assembly, and a second dispensing nozzle, wherein the second nozzle housing comprises a substantially curved tear drop shape comprising a head portion and a tail portion and a second nozzle collar mounted on a top end of the second internal chamber and supporting the second nozzle housing; and an exterior casing housing the first and second internal chambers, the exterior casing comprising an upper opening and a sleeve disposed thereon, the sleeve having inner contours complementary to the first and second nozzle housings such that the first and second nozzle housings at least partially protrude through the sleeve; and wherein the first and second nozzles are separately actuatable so that one of the first and second nozzles can be actuated without actuating the other nozzle; and which further comprises a stepped portion in the sleeve having a S-shaped wall and a S-shaped gap defined by inner edges of the first nozzle housing and the second nozzle housing, wherein the gap is supported by the S-shaped wall. ### Claim 2 (depends on 1) The fluid dispensing apparatus of claim 1, wherein the first nozzle housing is configured to slide downwards from an expanded position to a compressed position in response to pressure applied by a user, thereby actuating the first pump assembly; and wherein the second nozzle housing is configured to slide downwards from an expanded position to a compressed position in response to pressure applied by a user, thereby actuating the second pump assembly. ### Claim 3 (depends on 2) The fluid dispensing apparatus of claim 2, wherein the first pump assembly comprises a first spring configured to bias the first nozzle housing into the expanded position; and wherein the second pump assembly comprises a second spring configured to bias the second nozzle housing into the expanded position. ### Claim 4 (depends on 2) The fluid dispensing apparatus of claim 2, wherein the first nozzle housing is located adjacent the second nozzle housing such that the user may simultaneously depress both the first and second nozzle housings. ### Claim 5 (depends on 1) The fluid dispensing apparatus of claim 1, wherein the first nozzle housing comprises a first check valve located proximal the first inlet; and wherein the second nozzle housing comprises a second check valve located proximal the second inlet. ### Claim 6 (depends on 1) The fluid dispensing apparatus of claim 1, wherein the first and second dispensing bottles are configured to be removable from the exterior casing. ### Claim 7 (depends on 6) The fluid dispensing apparatus of claim 6, wherein the first nozzle collar is removably mounted on the top end of the first internal chamber, thereby allowing the first nozzle housing to be removed and the first internal chamber to be refilled. ### Claim 8 (depends on 7) The fluid dispensing apparatus of claim 7, wherein the second nozzle collar is removably mounted on the top end of the second internal chamber, thereby allowing the second nozzle housing to be removed and the second internal chamber to be refilled. ### Claim 9 (depends on 1) The fluid dispensing apparatus of claim 1, comprising a removable lid configured to engage an outer lip of the sleeve. ### Claim 10 (depends on 1) The fluid dispensing apparatus of claim 1, wherein the first and second nozzle housings are shaped to be free of rotational symmetry when viewed from above such that the orientation of the first and second dispensing nozzles relative to each other and the exterior casing is predetermined. ### Claim 11 (depends on 10) The fluid dispensing apparatus of claim 10, wherein the first and second dispensing nozzles are located proximal each other. ### Claim 12 (depends on 10) The fluid dispensing apparatus of claim 10, wherein the first and second dispensing nozzles are on opposite sides of the fluid dispensing apparatus. ### Claim 13 (depends on 1) The fluid dispensing apparatus of claim 1, wherein the first nozzle housing and the second nozzle housing are aligned with and complimentary configured such that opposing heads and tails are adjacent each other forming a yin-yang configuration. ### Claim 14 (depends on 1) The fluid dispensing apparatus of claim 1, wherein the head of each of the first and second nozzle housings is sloped downwardly towards to tail of each of the first and second nozzle housings.