# US 6,293,436 B2 · Liquid container with extensible dispensing tube > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,293,436 B2 - Document ID: US6293436B2 - Status: Granted - Kind: B2 - Application number: 09/431,971 - Filed: 1999-10-29 - Published: 2001-06-14 - Granted: 2001-09-25 - Earliest claimed: 1999-10-29 - Assignees: WD-40 Company - Inventors: David J. Faughnder; Lanny A. Gorton - Web page: https://patentgrep.com/patent/US6293436B2 ## CPC - B65D 47/061: {with telescopic, retractable or reversible spouts, tubes or nozzles} - B65D 47/243: {moving linearly, i.e. without rotational motion} - B65D 2207/00: Standing packages - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES ## Abstract A liquid dispensing container of the squeeze bottle type has a low center of gravity liquid bottle with a hemispherical base portion and a frusto-conical neck portion. A spout assembly is coupled to an upper end of the neck portion for dispensing liquid when a deformable bottom wall of the base portion of the bottle is flexed. The spout assembly includes a bottle cap with a through bore in which a flexible dispensing tube is slidably extensible and retractable to dispense liquid, such as lubricating oil, into locations that would otherwise be inaccessible. A wiper element in the bottle cap associated with the through bore provides a liquid impervious seal between the bottle cap and the tube and ensures that excess liquid on the outer surface of the tube is scraped off as the tube is extended. A nozzle is connected to a distal end of the tube and a pop-up sealing cap is slidable back and forth over the nozzle to selectively open and close a dispensing hole in the pop-up cap. ## Claims ### Claim 1 A liquid dispensing container, comprising: a deformable bottle for holding a quantity of a liquid to be dispensed; and a spout assembly coupled to an open end of the bottle for selectively dispensing a small portion of the quantity of liquid in the bottle including a bottle cap having a through bore, a flexible tube slidably extensible within the through bore out of the bottle and slidably retractable within the through bore back into the bottle, the tube having a proximal end for receiving the quantity of liquid within the bottle and a distal end for delivering the liquid out of the bottle, and a frusto-conical wiper element with a beveled tip extending radially inwardly inside the bottle cap for providing a substantially liquid impervious seal between the bottle cap and the tube and scraping off liquid from the tube when the tube is slidably extended from the bottle. ### Claim 2 (depends on 1) The dispensing container of claim 1 and further comprising a nozzle coupled to the distal end of the tube and having at least one dispensing orifice, and a pop-up cap coupled to the nozzle and selectively movable between retracted and extended positions for sealing and unsealing the dispensing orifice. ### Claim 3 (depends on 1) The dispensing container of claim 1 wherein the bottle has a unitary molded constructions including a generally hemispherical lower base portion and an elongated generally frusto-conical neck portion to which the spout assembly is coupled. ### Claim 4 (depends on 3) The dispensing container of claim 3 wherein the base portion of the bottle includes a flexible bottom wall portion that can be manually depressed to force liquid from the bottle into the tube. ### Claim 5 (depends on 1) The dispensing container of claim 1 wherein the wiper element extends radially inwardly and downwardly from a shoulder portion of the bottle cap. ### Claim 6 (depends on 1) The dispensing container of claim 1 wherein the deformable bottle has a neck portion with a circumferentially extending groove and the bottle cap has a circumferentially extending rib that mates with the groove to retain the bottle cap on the neck portion. ### Claim 7 (depends on 2) The dispensing container of claim 2 wherein an exterior surface of a rear end of the nozzle is sized and configured to removably snap into an upper end of the bottle cap. ### Claim 8 (depends on 2) The dispensing container of claim 2 wherein an interior through bore in of a rear end of the nozzle is tapered for holding the distal end of the tube. ### Claim 9 (depends on 2) The dispensing container of claim 2 wherein the nozzle is formed with a sealing plug at its distal end which is received in a hole in the pop-up cap when the pop-up cap is in its retracted position and which is withdrawn from the hole when the pop-up cap is in its extended position. ### Claim 10 (depends on 2) The dispensing container of claim 2 wherein an exterior surface of the pop-up cap is formed with a plurality of circumferentially extending ribs for facilitating gripping of the cap between a user's thumb and index finger. ### Claim 11 A liquid dispensing container, comprising: a deformable bottle for holding a quantity of a liquid to be dispensed; and a spout assembly coupled to an end of the bottle for selectively dispensing a small portion of the quantity of liquid in the bottle including a bottle cap having a through bore, a flexible tube slidably extensible within the through bore out of the bottle and slidably retractable within the through bore back into the bottle, the tube having a proximal end for receiving the quantity of liquid within the bottle and a distal end for delivering the liquid out of the bottle, a nozzle coupled to the distal end of the tube and having at least one dispensing orifice, and a pop-up cap non-removably coupled to the nozzle and selectively movable between retracted and extended positions for sealing and unsealing the dispensing orifice, the retracted and extended positions being defined by an annular ridge on the cap that selectively mates with spaced apart annular grooves on the nozzle. ### Claim 12 (depends on 11) The dispensing container of claim 11 and further comprising a wiper element extending radially inwardly from the bottle cap adjacent the through bore for providing a substantially liquid impervious seal between the bottle cap and the tube and scraping off liquid from the tube when the tube is slidably extended from the bottle. ### Claim 13 (depends on 11) The dispensing container of claim 11 wherein the bottle has a generally hemispherical lower base portion and an elongated generally frusto-conical neck portion to which the spout assembly is coupled. ### Claim 14 (depends on 13) The dispensing container of claim 13 wherein the base portion of the bottle includes a flexible bottom wall portion that can be manually depressed to force liquid from the bottle into the tube. ### Claim 15 (depends on 12) The dispensing container of claim 12 wherein the wiper element extends radially inwardly and downwardly from a shoulder portion of the bottle cap. ### Claim 16 (depends on 11) The dispensing container of claim 11 wherein the deformable bottle has a neck portion with a circumferentially extending groove and the bottle cap has a circumferentially extending rib that mates with the groove to retain the bottle cap on the neck portion. ### Claim 17 (depends on 11) The dispensing container of claim 11 wherein an exterior surface of a rear end of the nozzle is sized and configured to removably snap into an upper end of the bottle cap. ### Claim 18 (depends on 11) The dispensing container of claim 11 wherein an interior through bore in a rear end of the nozzle is tapered for holding the distal end of the tube. ### Claim 19 (depends on 11) The dispensing container of claim 11 wherein the nozzle is formed with a sealing plug at its distal end which is received in a hole in the pop-up cap when the pop-up cap is in its retracted position and which is withdrawn from the hole when the pop-up cap is in its extended position. ### Claim 20 (depends on 14) The dispensing container of claim 14 wherein the bottom wall portion includes an outwardly convex central portion and a surrounding peripheral hinge portion. ### Claim 21 A liquid dispensing container, comprising: a deformable bottle for holding a quantity of a liquid to be dispensed, the bottle having a unitary molded construction including a generally hemispherical lower base portion and an elongated neck portion; and a spout assembly coupled to the neck portion of the bottle for selectively dispensing a small portion of the quantity of liquid in the bottle including a bottle cap having a through bore, a cap liner washer squeezed between a shoulder of the bottle cap and a top edge of the elongated neck portion, and a flexible tube slidably extensible within the through bore out of the bottle and slidably retractable within the through bore back into the bottle, the tube having a proximal end for receiving the quantity of liquid within the bottle and a distal end for delivering the liquid out of the bottle. ### Claim 22 (depends on 21) The dispensing container of claim 21 wherein the base portion of the bottle includes a flexible bottom wall portion that can be manually depressed to force liquid from the bottle into the tube. ### Claim 23 (depends on 22) The dispensing container of claim 22 wherein the bottom wall portion includes an outwardly convex central portion and a surrounding peripheral hinge portion. ### Claim 24 (depends on 21) The dispensing container of claim 21 and further comprising a nozzle coupled to the distal end of the tube and having at least one dispensing orifice, and a pop-up cap coupled to the nozzle and selectively movable between retracted and extended positions for sealing and unsealing the dispensing orifice. ### Claim 25 (depends on 21) The dispensing container of claim 21 wherein the spout assembly further includes an annular wiper element extending radially inwardly from a shoulder portion of the bottle cap for providing a substantially liquid impervious seal between the shoulder portion of the bottle cap and the tube and scraping off liquid from the tube when the tube is slidably extended from the bottle. ### Claim 26 (depends on 25) The dispensing container of claim 25 wherein the wiper element extends radially inwardly and downwardly from the shoulder portion of the bottle cap. ### Claim 27 (depends on 21) The dispensing container of claim 21 wherein the neck portion has a frusto-conical shape and includes a circumferentially extending groove adjacent an upper end of the neck portion and the bottle cap has a circumferentially extending rib that mates with the groove to retain the bottle cap on the neck portion. ### Claim 28 (depends on 24) The dispensing container of claim 24 wherein an exterior surface of a rear end of the nozzle is sized and configured to removably snap into an upper end of the bottle cap. ### Claim 29 (depends on 24) The dispensing container of claim 24 wherein an interior through bore in of a rear end of the nozzle is tapered for holding the distal end of the tube. ### Claim 30 (depends on 24) The dispensing container of claim 24 wherein the nozzle is formed with a sealing plug at its distal end which is received in a hole in the pop-up cap when the pop-up cap is in its retracted position and which is withdrawn from the hole when the pop-up cap is in its extended position. ### Claim 31 A liquid dispensing container, comprising: a unitary molded bottle for holding a quantity of a liquid to be dispensed, the bottle having a generally hemispherical lower base portion and an elongated upper neck portion for providing a low center of gravity to reduce the likelihood of inadvertent tipping over of the bottle, the base portion of the bottle including a deformable bottom wall portion that can be manually depressed to force liquid from the bottle through the neck portion, the bottom wall portion including an outwardly convex central portion and a surrounding peripheral hinge portion; and a spout assembly coupled to an upper end of the neck portion of the bottle for dispensing a small portion of the quantity of liquid in the bottle when the flexible bottom wall portion of the bottle is manually depressed. ### Claim 32 (depends on 31) The dispensing container of claim 31 wherein the neck portion has a frusto-conical shape. ### Claim 33 (depends on 31) The dispensing container of claim 31 wherein the bottle is configured such that there is a smooth transition between an upper end of the hemispherical base portion and a lower end of the neck portion. ### Claim 34 (depends on 31) The dispensing container of claim 31 wherein the spout assembly includes a bottle cap coupled to an upper end of the neck portion, the bottle cap having a through bore. ### Claim 35 (depends on 34) The dispensing container of claim 34 and further comprising a flexible tube slidably extensible within the through bore out of the bottle and slidably retractable within the through bore back into the bottle, the tube having a proximal end for receiving the quantity of liquid within the bottle and a distal end for delivering the liquid out of the bottle. ### Claim 36 (depends on 35) The dispensing container of claim 35 and further comprising a nozzle coupled to the distal end of the tube and having at least one dispensing orifice, and a pop-up cap coupled to the nozzle and selectively movable between retracted and extended positions for sealing and unsealing the dispensing orifice. ### Claim 37 (depends on 35) The dispensing container of claim 35 wherein the spout assembly further includes an annular wiper element extending radially inwardly inside the bottle cap for providing a substantially liquid impervious seal between the shoulder portion of the bottle cap and the tube and scraping off liquid from the tube when the tube is slidably extended from the bottle. ### Claim 38 (depends on 34) The dispensing container of claim 34 wherein the upper end of the neck portion includes an annular groove adjacent an upper end of the neck portion and the bottle cap has a circumferentially extending rib that mates with the annular groove to retain the bottle cap on the neck portion. ### Claim 39 A liquid dispensing container, comprising: a unitary, molded plastic bottle for holding a quantity of a liquid to be dispensed, the bottle having a generally hemispherical lower base portion and an elongated generally frusto-conical upper neck portion for providing a low center of gravity to reduce the likelihood of inadvertent tipping over of the bottle, the base portion including a deformable bottom wall portion that can be manually depressed to force liquid from the bottle through the neck portion; and a spout assembly coupled to an upper end of the neck portion for dispensing a small portion of the quantity of liquid in the bottle when the flexible bottom wall portion of the bottle is manually depressed, including a bottle cap having a shoulder portion defining an annular through bore, a flexible tube slidably extensible within the through bore out of the bottle and slidably retractable within the through bore back into the bottle, the tube having a proximal end for receiving the quantity of liquid within the bottle and a distal end for delivering the liquid out of the bottle, an annular wiper element extending radially inwardly and downwardly adjacent the shoulder portion of the bottle cap for providing a substantially liquid impervious seal between the shoulder portion of the bottle cap and the tube and scraping off liquid from the tube when the tube is slidably extended from the bottle, a nozzle coupled to the distal end of the tube and having at least one dispensing orifice, and a pop-up cap coupled to the nozzle and selectively movable between retracted and extended positions for sealing and unsealing the dispensing orifice, the nozzle being formed with a sealing plug at its distal end which is received in a hole in the pop-up cap when the pop-up cap is in its retracted position and which is withdrawn from the hole when the pop-up cap is in its extended position. ### Claim 40 A liquid dispensing container, comprising: a deformable bottle for holding a quantity of a liquid to be dispensed; and a spout assembly coupled to an end of the bottle for selectively dispensing a small portion of the quantity of liquid in the bottle including a bottle cap having a through bore, a flexible tube slidably extensible within the through bore out of the bottle to an extended position and slidably retractable within the through bore back into the bottle to a retracted position, the tube having a proximal end for receiving the quantity of liquid within the bottle and a distal end for delivering the liquid out of the bottle, a nozzle coupled to the distal end of the tube and having at least one dispensing orifice, and means for retaining the tube in the retracted position.