US4015711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End plug for rolled materials
Assignee: PRECISION PLASTICS IND Inc
•
Filing: 1975-04-04
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Granted: 1977-04-05
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Expires: 1995-04-04
Abstract
Abstract A new concept of end plugs which are circular, concentric and symmetrical containing flanges at particular angles in front and back to produce a mechanical strength, is disclosed.
Inventors
- 👤 Henry L. Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:32
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/185; B65D; B65D59/00; B65D59/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
175 words
An improved end plug for a rolled goods packaging container which comprises a circular cylinder known as a sleeve having an external surface upon which the rolled goods are placed and an internal surface, which is concentric to and around a symmetrical axis with a continuous back flange, said back flange being nearly perpendicular to the sleeve; the outer diameter of said back flange is greater than the sleeve, and a second flange attached continously to the sleeve at the front of said sleeve, said second flange being concentric to and symmetrical with said sleeve and at least 20% of the area of said second flange being perpendicular to said sleeve, said sleeve being at an angle of 90° to the back flange for a distance of up to one-half of the sleeve length and then tapers at an angle of up to 10% off the vertical and the internal surface tapers at an angle of up to 10° off the vertical with respect to the back flange in the direction of the symmetrical axis.
Claim 2
Dependent Claim
175 words
An improved end plug for a rolled goods packaging container which comprises a circular cylinder known as a sleeve having an external surface upon which the rolled goods are placed and an internal surface, which is concentric to and around a symmetrical axis with a continuous back flange, said back flange being nearly perpendicular to the sleeve; the outer diameter of said back flange is greater than the sleeve, and a second flange attached continously to the sleeve at the front of said sleeve, said second flange being concentric to and symmetrical with said sleeve and at least 20% of the area of said second flange being perpendicular to said sleeve, said sleeve being at an angle of 90° to the back flange for a distance of up to one-half of the sleeve length and then tapers at an angle of up to 10% off the vertical and the internal surface tapers at an angle of up to 10° off the vertical with respect to the back flange in the direction of the symmetrical axis.
Claim 3
Dependent Claim
16 words
An end plug according to claim 1, wherein the second flange is recessed within the sleeve.
Claim 4
Dependent Claim
93 words
An end plug in accordance with claim 1 wherein said sleeve for a portion of its entire length tapers at an angle of up to 10° off the vertical, and said internal sleeve also tapers at an angle of up to 10° off the vertical both with respect to the back flange in the direction of the symmetrical axis and in addition an inner sleeve parallel to said sleeve and perpendicular to said second flange attached continually to said second flange at the point of intersection of said second flange and inner sleeve.
Claim 5
Dependent Claim
21 words
An end plug in accordance with claim 1 wherein the entire area of said second flange is perpendicular to said sleeve.
Claim 6
Dependent Claim
17 words
An end plug according to claim 3, where the said second flange is recessed within the sleeve.
Claim 7
Dependent Claim
96 words
An end plug in accordance with claim 4 wherein said sleeve tapers at an angle of up to 10° off the vertical parallel to the internal surface of the sleeve for its entire length and said taper is at an angle of up to 10° off the vertical with respect to the back flange in the direction of the symmetrical axis, containing in addition an inner sleeve parallel to said sleeve and perpendicular to the said second flange attached continually to said second flange at the point of intersection of said second flange and inner sleeve.
Claim 8
Dependent Claim
40 words
An end plug according to claim 1, wherein the intersection of surfaces comprising the sleeve and back flange meet in a concave radius and the intersection of the surfaces of the sleeve and second flange meet in a convex radius.
Claim 9
Dependent Claim
41 words
An end plug according to claim 3, wherein the intersection of surfaces comprising the sleeve and back flange meets in a concave radius and the intersection of the surface of the sleeve in the second flange meet in a convex radius.
Claim 10
Dependent Claim
55 words
An end plug in accordance with claim 1 wherein said sleeve for a portion of its entire length tapers at an angle up to 10° off the vertical with respect to the back flange and is concentric around the central axis of said plug and, in addition, said second flange is recessed within the sleeve.
Claim 11
Dependent Claim
21 words
An end plug in accordance with claim 1 wherein the entire area of the second flange is perpendicular to said sleeve.
Claim 12
Dependent Claim
46 words
An end plug in accordance with claim 1 wherein, in addition there is an inner sleeve parallel to said sleeve and perpendicular to said second flange attached continually to said second flange at the point of intersection of said second flange and the said inner sleeve.
Claim 13
Dependent Claim
44 words
An end plug in accordance with claim 10 wherein in addition there is an inner sleeve parallel to said sleeve and perpendicular to said second flange attached continually to said second flange at the point of intersection of said second flange and inner sleeve.
Claim 14
Dependent Claim
29 words
An end plug according to claim 1 wherein the second flange is recessed within the sleeve and said second flange for its entire area is perpendicular to said sleeve.
Claim 15
Dependent Claim
62 words
An end plug according to claim 1 wherein the second flange is recessed within the sleeve, wherein the entire area of said second flange is perpendicular to said sleeve, and an inner sleeve parallel to said sleeve and perpendicular to said second flange, attached continually to said second flange at the point of intersection of said second flange and said inner sleeve.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |