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US3893566A Expired / Lapsed US ⏱️ 0.0 years remaining

Packaging system including removable moisture-impervious sealing sheet

Assignee: Kimberly Clark Tissue Co
•
Filing: 1973-10-17
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Granted: 1975-07-08
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Expires: 1993-10-17
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Abstract

Abstract A moisture-impervious packaging system includes a container body having an upper margin defining an opening into an inner compartment thereof; a moisture-impervious sheet or film having a weakened region intermediate the forward and rearward ends thereof; and a closure having a transverse hinge intermediate the forward and rearward ends thereof which divides the closure into a movable door portion for permitting access into the inner compartment, and a stationary cover portion which is fixed against movement to the container body. The moisture-impervious sheet is disposed between the closure and the container body and is secured to the container body. The weakened region of the sheet is adjacent to a border of the cover portion adjacent the hinge, and this border provides a tearing edge. To prepare the packaging system for use the door portion of the closure is opened and the portion of the sheet underlying the door portion is peeled back toward the tearing edge to separate the sheet from the container body. When the sheet is peeled back to the weakened region it follows the tearing edge of the cover, and is thereby neatly and cleaning torn away to provide access to the contents within the container body without ever having to remove the closure from the body.

Inventors

  • 👤 Richard T Ross

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:18
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/14; B65D43/16; B65D43/161; B65D51/00; B65D51/18; B65D51/20; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0018; B65D2251/0021; B65D2251/0068; B65D2251/0093; B65D2251/10; B65D2251/1016; B65D2251/105; B65D2543/00; B65D2543/00009; B65D2543/00444; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00648; B65D2543/00675; B65D2543/00685; B65D2543/00694; B65D2543/00712; B65D2543/00722; B65D2543/00759; B65D2543/00787; B65D2543/00805

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 227 words
A packaging system comprising: a. a container body including a bottom wall, peripheral walls extending upwardly from said bottom wall and having upper margins which define an opening into an inner compartment of said body; b. a unitary closure attached to said body, said closure including a top wall overlying the open end of the compartment, said top wall including a thinned transverse section intermediate forward and rearward ends thereof for forming a transversely extending hinge and tearing edge, said hinge dividing said closure into a forward movable door portion and rearward stationary cover portion; and c. a moisture-impervious sheeT secured to said container body and being disposed between the container body and unitary closure, said sheet overlying the open end of the inner compartment and including a weakened region intermediate forward and rearward ends thereof for dividing said sheet into a forward section underlying the movable door portion of the closure and a rearward section underlying the stationary cover portion of said closure, said weakened region of the sheet being adjacent the tearing edge of the closure whereby the forward section of the sheet is separated from the rearward section of the sheet by peeling the forward section off of the container body toward the weakened region, whereat the forward section follows the tearing edge of the closure and is thereby separated from the rearward section.
Claim 2
Dependent Claim 227 words
A packaging system comprising: a. a container body including a bottom wall, peripheral walls extending upwardly from said bottom wall and having upper margins which define an opening into an inner compartment of said body; b. a unitary closure attached to said body, said closure including a top wall overlying the open end of the compartment, said top wall including a thinned transverse section intermediate forward and rearward ends thereof for forming a transversely extending hinge and tearing edge, said hinge dividing said closure into a forward movable door portion and rearward stationary cover portion; and c. a moisture-impervious sheeT secured to said container body and being disposed between the container body and unitary closure, said sheet overlying the open end of the inner compartment and including a weakened region intermediate forward and rearward ends thereof for dividing said sheet into a forward section underlying the movable door portion of the closure and a rearward section underlying the stationary cover portion of said closure, said weakened region of the sheet being adjacent the tearing edge of the closure whereby the forward section of the sheet is separated from the rearward section of the sheet by peeling the forward section off of the container body toward the weakened region, whereat the forward section follows the tearing edge of the closure and is thereby separated from the rearward section.
Claim 3
Dependent Claim 23 words
The packaging system according to claim 1, wherein the weakened region includes a notch in at least one side margin of said sheet.
Claim 4
Dependent Claim 51 words
The packaging system according to claim 1, wherein the moisture-impervious sheet extends beyond the upper margin of the container body at a corner thereof which underlies the door portion of the closure to thereby form a tab extension which can be gripped to facilitate peeling the sheet from the container body.

References Cited (Backward Citations)

US2185604A Cited
US2339555A Cited
US2931557A Cited
US3223275A Cited
US3391847A 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) 1978-07-07 1979-01-06 1979-07-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-07-07 1983-01-06 1983-07-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-07-07 1987-01-06 1987-07-08 $7700.00 Window Closed / Lapsed

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