US4790448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container and lid with tamper evident closure
Assignee: Liberty Diversified Industries Inc
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Filing: 1987-09-08
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Granted: 1988-12-13
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Expires: 2007-09-08
Abstract
Abstract A container and lid assembly including a container having a cylindrical side wall and top rim, and a lid having an inverted U-shaped rim and depending skirt portion which is snapped over the rim of the container wall to form a sealing closure therewith. An annular ridge projects inwardly from the inner surface of the skirt portion so as to ride over and engage under the upper bead of the container wall, thereby creating single point interference fits between the container and lid. The outer edge of a first shoulder engages a score line on the inner surface of the skirt portion defining a bi-directional tear strip. The distal end of the tear strip closely confronts a second shoulder when the container is originally sealed. The inside wall of the lid prevents the container from being deformed or collapsing when opened.
Inventors
- 👤 James V. Ostrum
- 👤 Gary C. Springer
- 👤 Kenneth G. Weller
- 👤 John E. Richard
- 👤 Robert E. Montrose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:28
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/18; B65D51/20; B65D43/00; B65D43/02; B65D43/0235; B65D43/0237; B65D43/0256; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0018; B65D2251/0068; B65D2251/0093; B65D2401/00; B65D2401/15; B65D2401/25; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00027; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00296; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00527; B65D2543/00537; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00648; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/0074; B65D2543/00787; B65D2543/00796
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
332 words
A container and lid assembly comprising: a container body, said container body including a bottom portion, a container wall having an inner surface and an outer surface extending upwardly from said bottom portion to a top edge defining an open top, a container rim extending peripherally around said open top, a locking bead extending radially outward from said outer surface of said container wall adjacent said top edge of said container wall, a first shoulder extending radially outward from said outer surface of said container wall below said locking bead and terminating in an outer edge, and a second shoulder extending radially outward from said container wall and having a top surface; and a lid member forming a sealing closure over the open top of the container body when said lid member is mounted on the container rim, said lid member comprising a top portion, a generally vertical inner wall connected to said top portion, and a skirt portion connected to and depending from said top portion and defining an inner surface, said skirt portion being positioned confronting the outer surface of the container wall and said inner wall of the lid member confronting the inner surface of the container wall when said lid member is mounted on the container rim, said skirt portion defining a ridge member extending radially inwardly from said inner surface of said skirt portion and positioned below the locking bead of the container body when said lid member is mounted on the container rim, said skirt portion further having a groove extending around said inner surface of said skirt portion below said ridge member and defining a tear strip region below said groove, said groove engaging the outer edge of the first shoulder when said lid member is mounted on the container rim, said tear strip further defining a gripping region and a distal end, said distal end closely confronting the top surface of the second shoulder when the lid member is mounted on the container rim.
Claim 2
Dependent Claim
332 words
A container and lid assembly comprising: a container body, said container body including a bottom portion, a container wall having an inner surface and an outer surface extending upwardly from said bottom portion to a top edge defining an open top, a container rim extending peripherally around said open top, a locking bead extending radially outward from said outer surface of said container wall adjacent said top edge of said container wall, a first shoulder extending radially outward from said outer surface of said container wall below said locking bead and terminating in an outer edge, and a second shoulder extending radially outward from said container wall and having a top surface; and a lid member forming a sealing closure over the open top of the container body when said lid member is mounted on the container rim, said lid member comprising a top portion, a generally vertical inner wall connected to said top portion, and a skirt portion connected to and depending from said top portion and defining an inner surface, said skirt portion being positioned confronting the outer surface of the container wall and said inner wall of the lid member confronting the inner surface of the container wall when said lid member is mounted on the container rim, said skirt portion defining a ridge member extending radially inwardly from said inner surface of said skirt portion and positioned below the locking bead of the container body when said lid member is mounted on the container rim, said skirt portion further having a groove extending around said inner surface of said skirt portion below said ridge member and defining a tear strip region below said groove, said groove engaging the outer edge of the first shoulder when said lid member is mounted on the container rim, said tear strip further defining a gripping region and a distal end, said distal end closely confronting the top surface of the second shoulder when the lid member is mounted on the container rim.
Claim 3
Dependent Claim
32 words
The container and lid assembly of claim 1 wherein the locking bead of the container body contacts and forms a single point interference fit with the inner surface of the skirt portion.
Claim 4
Dependent Claim
37 words
The container and lid assembly of claim 1 wherein the locking bead of the container body has an upper surface and a lower surface, said upper surface and said lower surface intersecting to form a sharp corner.
Claim 5
Dependent Claim
28 words
The container and lid assembly of claim 1 wherein the ridge member on the inner surface of the skirt portion has an upper surface and a lower surface.
Claim 6
Dependent Claim
22 words
The container and lid assembly of claim 4 wherein the upper surface and lower surface of the ridge member are generally planar.
Claim 7
Dependent Claim
234 words
A container and lid assembly comprising: a container body, said container body including a bottom portion, a container wall having an outer surface extending upwardly from said bottom portion of a top edge defining an open top, a locking bead extending radially outward from said outer surface of said container wall, a first shoulder extending radially outwardly from said outer surface of said container wall below said locking bead and terminating in an outer edge; and a lid member forming a sealing closure over the open top of the container body when said lid member is mounted on the container body, said lid member comprising a top portion and a skirt portion connected to and depending from said top portion and defining an inner surface, said skirt portion being positioned confronting the outer surface of the container wall when said lid member is mounted on the container body, said skirt portion defining a ridge member extending radially inwardly from said inner surface of said skirt portion and positioned below the locking bead of the container body when said lid member is mounted on the container body, said skirt portion further having a groove extending around said inner surface of said skirt portion below said ridge member and defining a tear strip region below said groove, said groove engaging the outer edge of said shoulder when said lid member is mounted on the container body.
Claim 8
Dependent Claim
234 words
A container and lid assembly comprising: a container body, said container body including a bottom portion, a container wall having an outer surface extending upwardly from said bottom portion of a top edge defining an open top, a locking bead extending radially outward from said outer surface of said container wall, a first shoulder extending radially outwardly from said outer surface of said container wall below said locking bead and terminating in an outer edge; and a lid member forming a sealing closure over the open top of the container body when said lid member is mounted on the container body, said lid member comprising a top portion and a skirt portion connected to and depending from said top portion and defining an inner surface, said skirt portion being positioned confronting the outer surface of the container wall when said lid member is mounted on the container body, said skirt portion defining a ridge member extending radially inwardly from said inner surface of said skirt portion and positioned below the locking bead of the container body when said lid member is mounted on the container body, said skirt portion further having a groove extending around said inner surface of said skirt portion below said ridge member and defining a tear strip region below said groove, said groove engaging the outer edge of said shoulder when said lid member is mounted on the container body.
Claim 9
Dependent Claim
32 words
The container and lid assembly of claim 1 wherein the locking bead of the container body contacts and forms a single point interference fit with the inner surface of the skirt portion.
Claim 10
Dependent Claim
37 words
The container and lid assembly of claim 1 wherein the locking bead of the container body has an upper surface and a lower surface, said upper surface and said lower surface intersecting to form a sharp corner.
Claim 11
Dependent Claim
30 words
The container and lid assembly of claim 8 wherein the upper surface of the locking bead is generally curved, and the lower surface of the locking bead is generally planar.
Claim 12
Dependent Claim
21 words
The container and lid assembly of claim 9 wherein the curve of the upper surface of the locking bead is convex.
Claim 13
Dependent Claim
21 words
The container and lid assembly of claim 8 wherein the sharp corner defines an outer peripheral edge of the locking bead.
Claim 14
Dependent Claim
23 words
The container and lid assembly of claim 1 wherein the second shoulder extends radially outward beyond the outer edge of the first shoulder.
Claim 15
Dependent Claim
31 words
The container and lid assembly of claim 1 wherein the skirt portion has an outer surface and the second shoulder extends radially outward beyond said outer surface of the skirt portion.
Claim 16
Dependent Claim
28 words
The container and lid assembly of claim 1 wherein the ridge member on the inner surface of the skirt portion has an upper surface and a lower surface.
Claim 17
Dependent Claim
22 words
The container and lid assembly of claim 14 wherein the upper surface and lower surface of the ridge member are generally planar.
Claim 18
Dependent Claim
26 words
The container and lid assembly of claim 14 wherein the upper surface and lower surface of the ridge member intersect to form a generally sharp corner.
Claim 19
Dependent Claim
78 words
The container and lid assembly of claim 1 wherein a person may unmount the lid member from the container body by lifting the lid member from the container body, and further wherein the first shoulder defines a plurality of notches forming finger relief areas in which the fingers of the person may be received when lifting the lid member to remove the lid member from the container subsequent to the tear strip being removed from the skirt portion.
Claim 20
Dependent Claim
22 words
The container and lid assembly of claim 1 wherein the tear strip defines a pair of opposing ends and a space therebetween.
Claim 21
Dependent Claim
21 words
The container and lid assembly of claim 18 wherein the opposing ends of the tear strip each define a gripping region.
Claim 22
Dependent Claim
43 words
The container and lid assembly of claim 1 wherein the lid member further comprises a rim, said rim having an inverted U-shape with first and a second opposing leg members and a bridge member connecting said first and said second opposing leg members.
Claim 23
Dependent Claim
35 words
The container and lid assembly of claim 20 wherein the first leg member includes the inner wall of the lid member, and wherein the second leg member includes the skirt portion of the lid member.
Claim 24
Dependent Claim
44 words
The container and lid assembly of claim 20 further comprising: an annular retaining rim extending upwardly from the bridge member, said retaining rim having an inner diameter generally greater than the diameter of the container wall adjacent the bottom portion of the container body.
Claim 25
Dependent Claim
39 words
The container and lid assembly of claim 1 further comprising: a plurality of generally arcuate protrusions extending radially inwardly from and spaced apart along the inner surface of the skirt portion adjacent the distal end of the tear strip.
Claim 26
Dependent Claim
176 words
A container and lid assembly comprising: a container body, said container body including a bottom portion, a container wall having an outer surface extending upwardly from said bottom portion to a top edge defining an open top, and a shoulder extending radially outwardly from said outer surface of said container wall and terminating in an outer edge; and a lid member forming a sealing closure over the open top of the container body when said lid member is mounted on the container body, said lid member comprising a top portion and a skirt portion connected to and depending from said top portion and defining an inner surface, said skirt portion being positioned confronting the outer surface of the container wall when said lid member is mounted on the container body, said skirt portion having a groove extending around said inner surface of said skirt portion defining a tear strip region below said groove, said groove engaging the outer edge of the shoulder of the container body when said lid member is mounted on the container body.
Claim 27
Dependent Claim
176 words
A container and lid assembly comprising: a container body, said container body including a bottom portion, a container wall having an outer surface extending upwardly from said bottom portion to a top edge defining an open top, and a shoulder extending radially outwardly from said outer surface of said container wall and terminating in an outer edge; and a lid member forming a sealing closure over the open top of the container body when said lid member is mounted on the container body, said lid member comprising a top portion and a skirt portion connected to and depending from said top portion and defining an inner surface, said skirt portion being positioned confronting the outer surface of the container wall when said lid member is mounted on the container body, said skirt portion having a groove extending around said inner surface of said skirt portion defining a tear strip region below said groove, said groove engaging the outer edge of the shoulder of the container body when said lid member is mounted on the container body.
Claim 28
Dependent Claim
28 words
The container and lid assembly of claim 24 wherein the sealing closure comprises one or more single point interference fits between the container body and the lid member.
Claim 29
Dependent Claim
58 words
The container and lid assembly of claim 24 wherein the container body defines a locking bead extending from the outer wall of the container body, said locking bead having a generally curved upper surface and defining a generally sharp corner contacting the inner surface of the skirt portion when the lid member is mounted on the container body.
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) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |