Plastic container with self-draining feature

Claim 2

A self-draining container molded in one piece having a body portion; an integrally formed neck defining a cylindrical opening having a predetermined diameter, said neck formed in situ with and extending upwardly from said body portion, a dispensing spout formed integral and in situ with and at least partially encircling said neck, at least a portion of said dispensing spout being a section of cylinder having an internal surface with a diameter at least equal to said predetermined diameter, all portions of said dispensing spout being above said neck, said dispensing spout having a circumferential extent of at least 180° but less than 360° and presenting opposing edges which define a gap at the lower end of said spout, and an integrally formed annular wall encircling said spout in spaced relation thereto; a web connecting said annular wall and said spout to said neck, said web being formed in situ with said annular wall and dispensing spout and cooperating therewith to define a channel for receiving liquids draining from said dispensing spout when the container is moved from an inverted dispensing position to an upright position; said gap providing an opening through which liquids may flow from said channel to said neck and body portion when the container is upright, said container being manufactured by a process in which at least the neck, dispensing spout, annular wall, web and said gap through which liquids flow are formed in a first mold in one operation and the body portion is thereafter formed by blow molding with no post-molding operations required for those portions formed in the first mold.

Claim 3

A self-draining container as defined in claim 1 wherein those portions formed in the first mold are formed by compression molding one end of a tubular parison.

Claim 4

A self-draining container as defined in claim 1 wherein those portions formed in the first mold are formed by injection molding, a blowable parison is simultaneously injection molded and is thereafter blown in a mold to form the body portion.

Claim 5

A self-draining container as defined in claim 1 wherein those portions formed in the first mold are injection molded, a blowable parison is thereafter integrally formed therewith by extruding a length of tubing and the tubing is thereafter blown to form the body portion.

Claim 6

A self-draining container as defined in claim 1, wherein the diameter of the internal surface of said dispensing spout is greater than said predetermined diameter.

Claim 7

A self-draining container as defined in claim 5 wherein said web extends upwardly and outwardly from the upper end of said neck, said spout extending upwardly from said web along an axis parallel to the axis of said neck.

Claim 8

A self-draining container as defined in claim 1 wherein said web has a horizontal exterior surface.

Claim 9

A self-draining container as defined in claim 1 wherein said annular wall has thread means formed on the surface facing said spout.

Claim 10

A self-draining container molded in one piece having a body portion; an integrally formed neck defining a cylindrical opening having a predetermined diameter, said neck formed in situ with and extending upwardly from said body portion, a dispensing spout formed integral and in situ with and at least partially encircling said neck, at least a portion of said dispensing spout being a section of a cylinder having an internal surface with a diameter greater than said predetermined diameter, all portions of said dispensing spout being above said neck, said dispensing spout having a circumferential extent of at least 180° but less than 360° and presenting opposing edges which define a gap at the lower end of said spout, and an integrally formed annular wall encircling said spout in spaced relation thereto, said annular wall having thread means extending from the surface facing said spout; a web connecting said annular wall and said spout to said neck, said web being formed in situ with said annular wall and dispensing spout and cooperating therewith to define a channel for receiving liquids draining from said dispensing spout when the container is moved from an inverted dispensing position to an upright position; and, said gap providing an opening through which liquids may flow from said channel to said neck and body portion when the container is upright, said container being manufactured by a process in which at least the neck, dispensing spout, annular wall, web and said gap through which liquids flow are formed in a first mold in one operation and the body portion is thereafter formed by blow molding with no post-molding operations required for those portions formed in the first mold.

Claim 11

A self-draining container molded in one piece having a body portion; an integrally formed neck defining a cylindrical opening having a predetermined diameter, said neck formed in situ with and extending upwardly from said body portion, a dispensing spout formed integral and in situ with and at least partially encircling said neck, at least a portion of said dispensing spout being a section of a cylinder having an internal surface with a diameter greater than said predetermined diameter, all portions of said dispensing spout being above said neck, said dispensing spout having a circumferential extent of at least 180° but less than 360° and presenting opposing edges which define a gap at the lower end of said spout, and an integrally formed annular wall encircling said spout in spaced relation thereto, said annular wall having thread means extending from the surface facing said spout; a web connecting said annular wall and said spout to said neck, said web being formed in situ with said annular wall and dispensing spout and cooperating therewith to define a channel for receiving liquids draining from said dispensing spout when the container is moved from an inverted dispensing position to an upright position; and, said gap providing an opening through which liquids may flow from said channel to said neck and body portion when the container is upright, said container being manufactured by a process in which at least the neck, dispensing spout, annular wall, web and said gap through which liquids flow are formed in a first mold in one operation and the body portion is thereafter formed by blow molding with no post-molding operations required for those portions formed in the first mold.

Claim 12

A self-draining container molded in one piece having a design permitting its manufacture by all of three separate blow molding processes including (1) injection blow molding, (2) injection-extrusion blow molding and, (3) extrusion-compression blow molding, said container comprising a body portion blow molded from a parison; an integrally formed neck defining a cylindrical opening having a predetermined diameter, said neck formed in situ with and extending upwardly from said body portion, a dispensing spout formed integral and in situ with and at least partially encircling said neck, at least a portion of said dispensing spout being a section of cylinder having an internal surface with a diameter at least equal to said predetermined diameter, all portions of said dispensing spout being above said neck, said dispensing spout having a circumferential extent of at least 180° but less than 360° and presenting opposing edges which define a gap at the lower end of said spout, and an integrally formed annular wall encircling said spout in spaced relation thereto; a web connecting said annular wall and said spout to said neck, said web being formed in situ with said annular wall and dispensing spout and cooperating therewith to define a channel for receiving liquids draining from said dispensing spout when the container is moved from an inverted dispensing position to an upright position; said gap providing an opening through which liquids may flow from said channel to said neck and body portion when the container is upright, said container being manufactured by a process in which at least the neck, dispensing spout, annular wall, web and said gap through which liquids flow are formed in a first mold in one operation and the body portion is thereafter formed by blow molding with no post-molding operations required for those portions formed in the first mold.

Claim 13

A self-draining container molded in one piece having a design permitting its manufacture by all of three separate blow molding processes including (1) injection blow molding, (2) injection-extrusion blow molding and, (3) extrusion-compression blow molding, said container comprising a body portion blow molded from a parison; an integrally formed neck defining a cylindrical opening having a predetermined diameter, said neck formed in situ with and extending upwardly from said body portion, a dispensing spout formed integral and in situ with and at least partially encircling said neck, at least a portion of said dispensing spout being a section of cylinder having an internal surface with a diameter at least equal to said predetermined diameter, all portions of said dispensing spout being above said neck, said dispensing spout having a circumferential extent of at least 180° but less than 360° and presenting opposing edges which define a gap at the lower end of said spout, and an integrally formed annular wall encircling said spout in spaced relation thereto; a web connecting said annular wall and said spout to said neck, said web being formed in situ with said annular wall and dispensing spout and cooperating therewith to define a channel for receiving liquids draining from said dispensing spout when the container is moved from an inverted dispensing position to an upright position; said gap providing an opening through which liquids may flow from said channel to said neck and body portion when the container is upright, said container being manufactured by a process in which at least the neck, dispensing spout, annular wall, web and said gap through which liquids flow are formed in a first mold in one operation and the body portion is thereafter formed by blow molding with no post-molding operations required for those portions formed in the first mold.

Claim 14

A self-draining container as defined in claim 10 wherein said annular wall has thread means formed on the surface facing said spout.

Claim 15

A self-draining container as defined in claim 10 wherein said web has a horizontal exterior surface.

Claim 16

A self-draining container as defined in claim 10 wherein said web extends upwardly and outwardly from the upper end of said neck, said spout extending upwardly from said web along an axis parallel to the axis of said neck and having an internal surface with a diameter greater than said predetermined diameter.