Patent US3567061A successfully refreshed from Google Patents.
US3567061A
Expired / Lapsed
US
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Easily openable sealed plastic closure method and apparatus
Assignee: Individual
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Filing: 1969-07-08
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Granted: 1971-03-02
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Expires: 1989-07-08
Abstract
Abstract The ''''score'''' line in a plastic wall, provided to define a line of comparatively easy tearing, is brought to a point at one side of an abutment integral with said wall. A handle is provided on the plastic in the area within the score line and immediately adjacent the point. Pulling on the handle applies a force at the point at which a tear will commence and continue along the score line. Because the score line comes to a point outside the plane of the wall it will more readily tend to break at that point rather than merely stretch. This tendency is enhanced by a notching of the score line at the terminus of the point.
Inventors
- 👤 John S Song
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:56
CPC Classifications
B; B65; B65D; B65D17/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
An easily openable sealed closure arrangement for a container having a wall area of plastic of a given thickness, said arrangement comprising: an abutment of said plastic projecting outwardly from said wall and integral with the wall; said wall having a portion extending up a side of the abutment and contiguous with the abutment; handle means on said portion; lines of tear in said wall defined by plastic sections which are substantially less thick then said given thickness, said lines of tear being spaced apart in said area adjacent said side of the abutment and extending outwardly along said side of the abutment between the abutment and said portion with said lines outwardly merging into a single line on said side of said abutment with said single line having a terminus, whereby, when said handle means is pulled in a direction away from said abutment a tearing of said plastic will readily start at said terminus and with additional pulling continue along said lines of tear.
Claim 2
Dependent Claim
166 words
An easily openable sealed closure arrangement for a container having a wall area of plastic of a given thickness, said arrangement comprising: an abutment of said plastic projecting outwardly from said wall and integral with the wall; said wall having a portion extending up a side of the abutment and contiguous with the abutment; handle means on said portion; lines of tear in said wall defined by plastic sections which are substantially less thick then said given thickness, said lines of tear being spaced apart in said area adjacent said side of the abutment and extending outwardly along said side of the abutment between the abutment and said portion with said lines outwardly merging into a single line on said side of said abutment with said single line having a terminus, whereby, when said handle means is pulled in a direction away from said abutment a tearing of said plastic will readily start at said terminus and with additional pulling continue along said lines of tear.
Claim 3
Dependent Claim
36 words
A closure arrangement as set forth in claim 1, wherein said line at said terminus is of a V configuration with the point of the V being in the direction of the remainder of the line.
Claim 4
Dependent Claim
61 words
A closure arrangement as set forth in claim 2, wherein said abutment is in the form of a ring, said wall extending across the inner face of the ring at the base thereof, said side being a part of the inner face of the ring, said lines extending from said side about the remainder of the inner face of the ring.
Claim 5
Dependent Claim
61 words
A closure arrangement as set forth in claim 1, wherein said abutment is in the form of a ring, said wall extending across the inner face of the ring at the base thereof, said side being a part of the inner face of the ring, said lines extending from said side about the remainder of the inner face of the ring.
Claim 6
Dependent Claim
14 words
A closure arrangement as set forth in claim 1, wherein said portion is hollow.
Claim 7
Dependent Claim
30 words
A closure arrangement as set forth in claim 5, wherein the adjacent parts of said abutment and said portion are substantially normal to the surface defined by said wall area.
Claim 8
Dependent Claim
132 words
In the method of forming an easily operable closure in an unbroken plastic wall area defining a main surface wherein the closure is defined by a ''''score'''' line with a handle means on the portion within the score line so that when the handle means is grasped and pulled the plastic will tear along the line, the improvement comprising: bringing said score line to a point which point at a location spaced from said surface so that an end of the score line is exposed; and positioning said handle means immediately adjacent said point; whereby the pull on the handle means exerts a tearing force at said point which force is at a direction transverse to said line at said point so that the plastic at said end will rupture relatively easily.
Claim 9
Dependent Claim
132 words
In the method of forming an easily operable closure in an unbroken plastic wall area defining a main surface wherein the closure is defined by a ''''score'''' line with a handle means on the portion within the score line so that when the handle means is grasped and pulled the plastic will tear along the line, the improvement comprising: bringing said score line to a point which point at a location spaced from said surface so that an end of the score line is exposed; and positioning said handle means immediately adjacent said point; whereby the pull on the handle means exerts a tearing force at said point which force is at a direction transverse to said line at said point so that the plastic at said end will rupture relatively easily.
Claim 10
Dependent Claim
14 words
In the method of claim 7, wherein a notch is formed in said end.
References Cited (Backward Citations)
US3434620A
Cited
US3499572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |