US3768698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pour spout
Assignee: COR SEN PLASTIC Ltd
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Filing: 1971-09-20
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Granted: 1973-10-30
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Expires: 1991-09-20
Abstract
Abstract An integral pour spout for use with waxed paper cartons and the like is disclosed. In a preferred embodiment a tubular spout connects with a hollow cone-shaped piercing element, and a radially extending flange is provided at the juncture. A rootless multiple thread is provided at the exterior of the cone-shaped piercing element and the multiple thread is supported by interior axially extending, spaced-apart ribs within the cone. The tip of the cone-shaped element is used to puncture a waxed paper carton, and the spout is then threaded into the top of the carton. The adjacent waxed paper is threaded and forced against sealing elements on the flange. Although the preferred embodiment appears to be complex, it is an easily molded integral piece which provides adequate but controlled flow, and seals firmly without drip or dribble between the spout and the carton. After the carton is empty, the spout is unthreaded and can be reused with another carton.
Inventors
- 👤 R Corty
- 👤 E Iversen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:12
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/24; B67B7/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
An integral pour spout with means for self-attachment for use with waxed paper cartons and the like comprising a conical piercing portion, a discharge spout portion, and a radially extending flange portion between said conical portion and said spout portion, wherein the conical piercing portion is hollow and consists essentially of a point, spaced-apart inner ribs extending axially between said flange portion and said point, said ribs extending axially from said flange portion and radially inwardly to converge at said point and multiple threads supported on the outside surface of said axially extending inner ribs, said multiple threads being rootless at the portions thereof extending between adjacent ribs, wherein passageways to the hollow piercing portion are provided between the threads and between the spacedapart inner ribs.
Claim 2
Dependent Claim
126 words
An integral pour spout with means for self-attachment for use with waxed paper cartons and the like comprising a conical piercing portion, a discharge spout portion, and a radially extending flange portion between said conical portion and said spout portion, wherein the conical piercing portion is hollow and consists essentially of a point, spaced-apart inner ribs extending axially between said flange portion and said point, said ribs extending axially from said flange portion and radially inwardly to converge at said point and multiple threads supported on the outside surface of said axially extending inner ribs, said multiple threads being rootless at the portions thereof extending between adjacent ribs, wherein passageways to the hollow piercing portion are provided between the threads and between the spacedapart inner ribs.
Claim 3
Dependent Claim
19 words
The pour spout of claim 1 wherein the multiple thread is a quadruple thread integral with the spaced-apart ribs.
Claim 4
Dependent Claim
50 words
The pour spout of claim 1 wherein the radially extending flange portion includes a radial face adjacent the conical piercing portion, said face having a substantial annular recess therein adjacent the conical portion, said recess being adapted for receiving an annular fold of paper from a waxed paper carton therein.
Claim 5
Dependent Claim
62 words
The pour spout of claim 3 wherein said recess includes a pair of concentric annular, axially extending, sharply pointed ridges including a radially inward ridge which extends axially in the direction of the conical piercing portion for a shorter distance than the outer of the two concentric rings, and wherein said fold is formed between said threads and said inner annular ridge.
Claim 6
Dependent Claim
216 words
An integral pour spout with means for self-attachment for use with waxed paper cartons and the like comprising a conical piercing portion, a discharge spout portion, and a radially extending flange portion between said conical portion and said spout portion, wherein the conical piercing portion is hollow and consists essentially of a point, a plurality of spaced-apart axially extending inner ribs and multiple threads supported on the outside surface of and integral with said plurality of axially extending, inner, spaced-apart ribs, said ribs extending from said flange portion to said point, said multiple threads being rootless in those portions thereof extending between said ribs, wherein access passageways to the hollow piercing portion areprovided between the threads and between the spaced-apart ribs, and wherein the radially extending flange portion includes a radial face adjacent said conical piercing portion, said radial face including an annular recess adjacent said conical piercing portion, the radially outward limit of said recess being defined by a sharply pointed annular axially extending extension of said flange portion which annular extension is positioned radially outwardly from the widest part of said conical piercing portion, and radially outwardly from a terminal portion of said multiple threads a sufficient distance to permit said threads to force a fold of material from a waxed paper carton therebetween.
Claim 7
Dependent Claim
216 words
An integral pour spout with means for self-attachment for use with waxed paper cartons and the like comprising a conical piercing portion, a discharge spout portion, and a radially extending flange portion between said conical portion and said spout portion, wherein the conical piercing portion is hollow and consists essentially of a point, a plurality of spaced-apart axially extending inner ribs and multiple threads supported on the outside surface of and integral with said plurality of axially extending, inner, spaced-apart ribs, said ribs extending from said flange portion to said point, said multiple threads being rootless in those portions thereof extending between said ribs, wherein access passageways to the hollow piercing portion areprovided between the threads and between the spaced-apart ribs, and wherein the radially extending flange portion includes a radial face adjacent said conical piercing portion, said radial face including an annular recess adjacent said conical piercing portion, the radially outward limit of said recess being defined by a sharply pointed annular axially extending extension of said flange portion which annular extension is positioned radially outwardly from the widest part of said conical piercing portion, and radially outwardly from a terminal portion of said multiple threads a sufficient distance to permit said threads to force a fold of material from a waxed paper carton therebetween.
Claim 8
Dependent Claim
13 words
The spouT of claim 5 wherein the multiple thread is a quadruple thread.
Claim 9
Dependent Claim
13 words
The spout of claim 5 wherein said spout is manufactured from a plastic.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |