US3547297A - Container closure having integral opening means - Google Patents
Container closure having integral opening means Download PDFInfo
- Publication number
- US3547297A US3547297A US739265A US3547297DA US3547297A US 3547297 A US3547297 A US 3547297A US 739265 A US739265 A US 739265A US 3547297D A US3547297D A US 3547297DA US 3547297 A US3547297 A US 3547297A
- Authority
- US
- United States
- Prior art keywords
- cap
- cover member
- container
- opening
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/002—Closures to be pierced by an extracting-device for the contents and fixed on the container by separate retaining means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S215/00—Bottles and jars
- Y10S215/03—Medical
Definitions
- the cap is generally of cuplike form and includes a top and a skirt depending from the outer peripheral edge of the top.
- the top includes a portion connected to the cover member and adapted to be detached to expose the stopper and permit it to be pierced, for example by a hypodermic syringe to remove the fluid contents of the container.
- partial scoring that is, a continuous line-type scoring, is provided in the top to define a keyhole-shaped detachable portion therein.
- the cover member is secured to this detachable keyhole-shaped portion whereby upon actuation of the cover relative to the cap, the detachable portion breaks away from the remainder of the cap along the score line.
- CONTAINER CLOSURE HAVING INTEGRAL OPENING MEANS This invention relates to improvements in container closures and in particular to caps for pharmaceutical containers or bottles having a removable portion adapted to be detached to permit piercing of the stopper by a syringe for removing the contents of the container.
- U.S. Pat. No. 3,071,274 owned by the assignee ofthe present application.
- these container closure assemblies usually include a pierceable closure member such as a disk or stopper formed of rubber or like material which disk in the open end of the bottle and a metallic cap to hold the stopper in place, the cap having a depending flange engaging a shoulder on the neck of the bottle to hold the stopper in place.
- These caps generally include a central removable disk portion connected to the annular top portion of the cap usually by a plurality of circumferentially spaced fracturable connecting bridges.
- the assembly further includes a cover member overlying the top and connected to the central disk whereby upon pivotal movement of the cover member, the fracturable bridges are broken and the disk is removed to expose the stopper and afford access thereto which then may be pierced by a hypodermic syringe to remove the contents of the container or bottle.
- the central removable disk portion is connected to the annular top portion of the cap by means of a partial score line.
- the partial scoring defining in one embodiment a tab portion converging to a point along the skirt of the cap.
- the disk is provided with an opening offset from the center thereof and aligned with a line through the center of the cap portion and the cover has a button engaging through the opening to secure the cover to the assembly.
- the cover is provided with a recess ad jacent the edge providing a lift section for engaging the cover to remove the central disc disk portion.
- FIG. I is a side elevational view of a container closure in accordance with the present invention in position on a bottle;
- FIG. 2 is an enlarged plan view of the cap with a portion of the cover element broken away to more clearly illustrate the construction
- FIG. 3 is a sectional view taken on lines 3-3 of FIG. 2;
- FIG. 4 is a view similar to FIG. 3 with cover member and disk partially removed;
- FIG. 5 is a perspective view of the cap and cover member and disk disassembled from the remainder ofthe cap;
- FIG. 6 is a perspective view of the cap prior to assembly of the cover member thereto;
- FIG. 7 is a transverse sectional view of a second embodiment of container closure in accordance with the present invention assembled to a container;
- FIG. 8 is a perspective view of the cap portion of the container closure
- FIG. 9 is a transverse cross-sectional view of a third embodiment of container closure in accordance with the present invention.
- FIG. 10 is a perspective view of the cap
- FIG. II is also a perspective view showing the interior of the cap
- FIG. 12 is a perspective view showing the container closure after removal from the container
- FIG. 13 is a side elevational view of a fourth embodiment of container closure applied to a conventional bottle
- FIG. I4 is a view similar to FIG. 13 as viewed from the opposite side of the container closure;
- FIG. 15 is a top plan view with parts broken away to show more clearly the construction of the container closure shown in FIGS. 13 and 14;
- FIG. 16 is a sectional view taken on line I6-I6 ofFlG. I5;
- FIG. I7 is a view similar to FIG. I6 showing the container closure partially removed.
- FIG. I8 is a perspective view of the cover member after disassembly from the remainder of the container closure.
- reference numeral 10 designates generally a container such as a bottle of conventional form, having a container closure in accordance with the present invention covering the opening in the bottle.
- This bottle includes a reduced neck portion 12 having a peripherally extending rib 14 adjacent the opening I6 in the bottle.
- a stopper 18 which may be formed of rubber or like material en gages in the opening 16, the stopper in the present instance has a depending plug portion 20 adapted to fit within the neck of the bottle, a peripheral flange 22 which seats against the lip of the bottle and a central thin walled portion 24 which may be pierced for example by the needle of a hypodermic syringe to withdraw the contents of the container.
- the stopper 18 may be of any conventional form and the present invention is not concerned with the particular form thereof.
- a cap 30 of generally cup like form which is preferably made of a sheet material such as aluminum holds the stopper in place and also serves to seal the contents of the container.
- the cap 30 includes a depending peripheral skirt 32 adapted to be spun inwardly or otherwise formed along its lower terminal edge to provide an inwardly directed locking flange 34 engaging under the rib 14 to secure the stopper in place.
- the top 36 of the cap is provided with a partial scoring broadly designated by the numeral 40 which as best illustrated in FIG. 2 comprises a circular portion 42 separating the top into an outer annular portion 44 and a circular disk portion 46, the circular scoring 42 terminating in a pair of spaced-apart parallel score lines 48 extending across the annular portion 44 and defining there between a tab portion 50.
- the score lines 48 are parallel and disposed on opposite sides of a line through the center of the top and as illustrated in FIGS. 5 and 6 converge to a point in the sidewall of the cap to define a generally triangular tail extension 52 of the tab portion 50.
- An opening 60 is provided in the central disk portion 46 offset to one side of the center of the disc diametrically opposed from the tab portion 50 and as illustrated has an embossed or raised wall portion 62 defining a recess or pocket on the underside of the top.
- a cover member 70 is connected the top of the cap with is actuatable with respect thereto to remove the central disk portion and tab portion from the remainder of the capv
- the cover which is of generally disklike form overlies the top of the cap and is secured to the removable disc portion by a buttonlike projection 74 which engages through the opening 60.
- This button has an out-turned locking flange 76 engaging about the inner peripheral wall of the embossed wall 62 surrounding the opening 60.
- the cover member has a peripherally sidewall or flange 80 which overlies and snugly the circumferential edge of the cap at the juncture of the top and skirt.
- the cover member has a cutout 82 in the side wall located at a point in line with the opening 60, center of the cap and tab portion 50.
- This cutout 82 is to facilitate actuation of the cover member to remove the central disk portion from the cap and expose the stopper so that it may be pierced by a hypodermic syringe.
- the user simply inserts a prying instrument or the fingernail in the cutout and while supporting the container in the opposite hand. exerts a lifting force on the cover which effects separation along the partial score lines, and complete removal of the central disk and tab portion from the remainder of the cap.
- the cap may be made of a flat disklike piece of aluminum and then by conventional means is partially scored to form the score lines 42, 48 and 51 and simultaneously or in a separate operation the opening 60 and embossed wall 62 formed.
- a cover member which may be made of plastic is assembled thereto. It is noted that the cover may be secured to the cap in the manner shown by peening of the button 74 after assembly of the cover and cap as by applied pressure and heat.
- partial scoring is a continuous score line in the metallic member which may be made by conventional means. Further, the depth of penetration of the score line is selectively chosen for a particular gauge metal to provide the desired resistance to removal of the disk member.
- the central disk portion has an opening 136 surrounded by an embossed or raised wall portion 138 disposed centrally of the cap.
- the cover member 140 which may be made of a plastic material has a central depending projection 142 in the form disk a button having a peripheral flange engaging in the pocket defined under the raised wall 138 surrounding the opening 136.
- the cover member has an outer downwardly depending sidewall snugly embracing the juncture of the skirt and top portions of the cap.
- the cover may be engaged at any point about its periphery and when it is actuated relative to the top.
- the partial score is fractured along the cir cular line 128 and the entire central disk portion is removed with the cover to expose the center or pierceable portion of the stopper 120.
- the cap may be made and the cover assembled thereto in the manner described above in connection with the first embodiment.
- the parallel legs 228a and 228b of the partial scoring in the top extend over the side edge and in the sidewall converge inwardly as illustrated as at 2300 and 230k.
- Leg 230 terminates at a point short of the lower terminal edge of the skirt whereas the leg 230a has a lower extension 232 spaced from the upper extension for a purpose to be described in more detail hereafter.
- the area of the cap between the score lines 228a. 2281; and 2300, 230b defines a tab portion 240.
- the cap is also partially scored diametrically opposed from the tab portion 240. consisting of a single score 244 extending across the top and down the skirt and a short leg portion 246 spaced from the line 244 and extending to the lower edge of the skirt.
- the central portion 228 is provided with an opening 250 at a point offset from the center of the cap toward the score line 244, the opening 250 being surrounded by a raised wall portion 252.
- the container closure further includes a cover member 260 of generally disklike form and made of a resilient material such as plastic.
- the cover member has a depending projection 262 engaging through the opening 250 in the top of the cap which is of buttonlike form and has an outwardly extending flange 264 engaging under the wall 252 and in the pocket formed by the raised wall portion.
- the cover member has an indenture or cutout 266 aligned with the projection 262 and center of the cover member to facilitate insertion of a fingernail or other prying instrument to actuate the cover member at this point relative to the cap.
- an upward force is applied in the area of the cutout 266, the cap is fractured along the keyhole score line 222 to remove the center portion 228.
- the user continues to pull the cover member radially outwardly and downwardly along the skirt to fracture the cap along the lines 228a, 228b and 230a, 230b. Because of configuration of the score lines 230a and 230b, the skirt will separate completely along the score lines 230a, 232. to permit the remainder of the cap to be pivoted about the score lines 244 and 246, the area between these lines serving as a hinge as at 270 whereby the remainder of the cap may be divided in halves and completely removed from the container (See Fig. 12).
- the cap and its scoring configuration may be formed from a flat circular disklike piece of aluminum or the like and then made into a cuplike form by conventional means. Thereafter, the cover member may be assembled to the cap in the manner described in connection with the previous embodiments.
- the top 336 of the cap is provided with a continuous partial score line broadly designated by the numeral 340, which as best illustrated in FIGS. 14 and 15 is of keyhole configuration in the top and converges to a pointed tail portion 341 in the sidewall of the skirt.
- the continuous score line is referred to herein as partial scoring" and is of a sufficient depth in relation to the thickness of the sheet material to permit separation of the cap along the score line by a predetermined force as explained in more detail hereafter. Depth of the partial scoring can be controlled for any gauge metal thereby providing an assembly wherein the force to remove the disk portion of the cap may be accurately controlled.
- the scoring 340 separates the cap into an outer annular horseshoe shaped portion 344, a central disk portion 346 and a tab portion 347 between parallel radial score lines 348 extending across the annular portion.
- the extension of score lines 348 as illustrated in FIG. 14 converge to a point in the skirt of the cap to define a generally triangular tail extension 352 of the tab portion 347.
- a cover member 370 which may be made of plastic is connected to the top of the cap and is actuatable with respect thereto to remove the central disk portion and tab portion from the remainder of the cap.
- the cover 370 which is generally of disklike form overlies the top of the cap and is secured to the removable disk portion by a button like projection 374 gauging through the opening 360.
- the projection has a square throat portion 375 conforming to the opening 360 and an out-turned locking flange 376 which nests in the pocket defined by the raised wall portion of the disk.
- the user When it is desired to expose the stopper for penetration by a hypodermic syringe to remove the contents, the user simply supports the container in one hand and now engages the lug 383 and presses it upwardly whereby the cover member lifts the central disk portion and causes it to be separated from the remainder of the cap along the score lines 340. Note in FIG. 17 that the lug 381 presses against the skirt of the cap below the apex of the triangular extension to insure complete separation and exertion of a minimum force to remove the disk portion.
- the cap and cover assembly is economical to make and can be made in much the same manner as previously described embodiments.
- the cap may be made of a flat, disklike piece of aluminum and then by conventional means partially scored" to form the continuous score line 340 defining the central disk portion 346, the tab portion 347 and the tail extension 352.
- the cover member is secured thereto simply by peening the button by applied pressure and heat.
- the depth of the continuous "partial scoring" can be controlled for any gauge metal thereby providing an assembly where the force for removing the disk portion may be controlled very accurately and very uniformly for a plurality of container closures.
- the container closure of the present invention provides a truly tamper-proof construction for the reason that once the cover member and portion of the case have been removed to expose the stopper, they cannot be replaced or reassembled. Furthermore, removal of the cover member does not produce any jagged edges on the cap which might present a risk of inju ry to the user. Additionally, the cover member closely embraces the cap to provide a seal that excludes infiltration of dirt and foreign matter, thus eliminating the danger of contaminating the contents of the container.
- a cap which is adapted to be secured to the container over the opening and including a top.
- means defining a partial score line in said cap providing an area of reduced cross section and defining a detachable portion adapted to be detached, a cover member overlying the top secured to said detachable cap portion and having an outer edge portion extending beyond the periphery of the top engageable by the user to actuate the cover member relative to the cap to effect separation along said partial score line.
- a tamper-proof closure as claimed in claim 1 including means defining an opening in the detachable portion of the cap and wherein said cover member has a depending projection engaging through said opening terminating in a flange un derlying the wall surrounding said opening.
- a tampenproof closure as claimed in claim 6 wherein said opening is offset relative to the center of the cap and wherein said cover member is provided with a recess in one peripheral edge aligned with said opening and the center of the cap.
- a tamper-proof closure as claimed in claim 8 including an opening in the center of said disk portion and wherein said cover member is provided with a depending projection engaging through said opening terminating in a flange underlying the wall surrounding said opening.
- a cap including a top and a skirt depending from the outer peripheral edge of the top having means for securing the cap to the container, means defining a continuous partial score line in said cap providing an area of reduced cross section and defining a detachable portion adapted to be detached, :1 cover member overlying the top secured to said detachable portion and havin an outer edge portion extending beyond the periphery of the top engageable by the user to actuate the cover member rdstive to the cap to effect separation of the cap along the partial score line.
- a cap adapted to be secured to the container over the opening and including a top.
- means defining a partial score line in said cap providing an area of reduced cross section and defining a detachable portion adapted to be detached.
- a cover member overlying the top secured to said detachable portion. said cover member having an outer edge ortion extending beyond the periphery of the top and a pivot portion remote from the outer edge portion and extending to a.
- said outer edge portion engageable by the user to actuate the cover member relative to the cap to effect separation of the cap along the partial score line, said pivot portion serving as a fulcrum ofa lever upon actuation of the cover member.
- a cap including a top and a skirt depending, from the outer peripheral edge of the top. means defining a partial score line in said cap providing a detachable portion adapted to be.
- said means for securing the cover to the cap including means defining a noncircular open ing in the detachable portion of the cap and a depending orcjection on said cover engaging through said open ng ofa cross section similar to said noncircular opening to prevent relative rotation of said cover and cap. said projection terminating in a flange underlying the wall surrounding said opening.
- Patent No. 3 a 547 297 December 15, 1970 Dated Robert Herbert et a1.
- a cap adapted to be secured to the container over the opening and including a top.
- means defining a partial score line in said cap providing an area of reduced cross section and defining a detachable portion adapted to be detached, a cover member overlying the top secured to said detachable portion.
- said cover member having an outer edge portion extending beyond the periphery of the top and a pivot portion remote from the outer edge portion and extending to a.
- said outer edge portion engageable by the user to actuate the cover member relative to the cap to effect separation of the cap along the partial score line.
- said pivot portion serving as a fulcrum ol'a lever upon actuation of the cover member.
- a cap including a top and a skirt depending from the outer peripheral edge of the top, means defining a partial score line in said cap providing a detachable portion adapted to be.
- said means for securing the cover to the cap including means defining a noncircular opening in the detachable portion of the cap and a depending erojection on said cover engaging through said open ng ot'a cross section similar to said noncircular opening to prevent relative rotation of said cover and cap. said projection terminating in a flange underlying the wall surrounding said opening.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73926568A | 1968-06-24 | 1968-06-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3547297A true US3547297A (en) | 1970-12-15 |
Family
ID=24971526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US739265A Expired - Lifetime US3547297A (en) | 1968-06-24 | 1968-06-24 | Container closure having integral opening means |
Country Status (5)
Country | Link |
---|---|
US (1) | US3547297A (de) |
BE (1) | BE735045A (de) |
CH (1) | CH507846A (de) |
DE (1) | DE6922313U (de) |
FR (1) | FR2013360A1 (de) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS504948U (de) * | 1973-05-22 | 1975-01-20 | ||
FR2390341A1 (fr) * | 1977-05-09 | 1978-12-08 | Asicomo As | Fermeture de receptacle et procede pour la realiser |
US4187149A (en) * | 1978-02-27 | 1980-02-05 | Monsanto Company | Cell culture sampling system |
US4482071A (en) * | 1981-10-16 | 1984-11-13 | Olympus Optical Co., Ltd. | Sealing aid for fastening a resilient plug inserted into an opening of a container |
US4513871A (en) * | 1984-05-30 | 1985-04-30 | Health Care Concepts, Inc. | Container with integrally formed non-coring and non-leaking piercing site |
US4562932A (en) * | 1983-10-06 | 1986-01-07 | Franz Pohl Metall- Und Kunststoffwarenfabrik Gmbh | Cap closure for a container with pharmaceutical contents |
US4574965A (en) * | 1984-05-30 | 1986-03-11 | Health Care Concepts, Inc. | Container with integrally formed piercing site |
US5080245A (en) * | 1990-03-22 | 1992-01-14 | The West Company Incorporated | Bidirectional scoring |
US5405031A (en) * | 1992-11-19 | 1995-04-11 | Firma Pohl Gmbh & Co. Kg | Closure for a medicine bottle |
US5447247A (en) * | 1991-10-04 | 1995-09-05 | Firma Pohl Gmbh & Co. Kg | Sealing cap |
US20040094500A1 (en) * | 2002-11-19 | 2004-05-20 | Flesher Hal Stephen | Reusable closure system for bottle-type containers |
-
1968
- 1968-06-24 US US739265A patent/US3547297A/en not_active Expired - Lifetime
-
1969
- 1969-06-03 DE DE6922313U patent/DE6922313U/de not_active Expired
- 1969-06-17 CH CH934669A patent/CH507846A/de not_active IP Right Cessation
- 1969-06-23 FR FR6920894A patent/FR2013360A1/fr active Pending
- 1969-06-24 BE BE735045D patent/BE735045A/xx not_active IP Right Cessation
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS504948U (de) * | 1973-05-22 | 1975-01-20 | ||
JPS5420050Y2 (de) * | 1973-05-22 | 1979-07-21 | ||
FR2390341A1 (fr) * | 1977-05-09 | 1978-12-08 | Asicomo As | Fermeture de receptacle et procede pour la realiser |
US4205754A (en) * | 1977-05-09 | 1980-06-03 | Oniba I/S | Container closure and a method of making the same |
US4187149A (en) * | 1978-02-27 | 1980-02-05 | Monsanto Company | Cell culture sampling system |
US4482071A (en) * | 1981-10-16 | 1984-11-13 | Olympus Optical Co., Ltd. | Sealing aid for fastening a resilient plug inserted into an opening of a container |
US4562932A (en) * | 1983-10-06 | 1986-01-07 | Franz Pohl Metall- Und Kunststoffwarenfabrik Gmbh | Cap closure for a container with pharmaceutical contents |
WO1985005611A1 (en) * | 1984-05-30 | 1985-12-19 | Health Care Concepts, Inc. | Container with integrally formed non-coring and non-leaking piercing site |
US4513871A (en) * | 1984-05-30 | 1985-04-30 | Health Care Concepts, Inc. | Container with integrally formed non-coring and non-leaking piercing site |
US4574965A (en) * | 1984-05-30 | 1986-03-11 | Health Care Concepts, Inc. | Container with integrally formed piercing site |
GB2172274A (en) * | 1984-05-30 | 1986-09-17 | Health Care Concepts Inc | Container with integrally formed non-coring and non-leaking piercing site |
WO1986006043A1 (en) * | 1985-04-12 | 1986-10-23 | Health Care Concepts, Inc. | Container with integrally formed piercing site |
US5080245A (en) * | 1990-03-22 | 1992-01-14 | The West Company Incorporated | Bidirectional scoring |
US5447247A (en) * | 1991-10-04 | 1995-09-05 | Firma Pohl Gmbh & Co. Kg | Sealing cap |
US5405031A (en) * | 1992-11-19 | 1995-04-11 | Firma Pohl Gmbh & Co. Kg | Closure for a medicine bottle |
US20040094500A1 (en) * | 2002-11-19 | 2004-05-20 | Flesher Hal Stephen | Reusable closure system for bottle-type containers |
US6772892B2 (en) * | 2002-11-19 | 2004-08-10 | E. & J. Gallo Winery | Reusable closure system for bottle-type containers |
Also Published As
Publication number | Publication date |
---|---|
DE1929797B2 (de) | 1976-02-05 |
BE735045A (de) | 1969-12-01 |
CH507846A (de) | 1971-05-31 |
DE6922313U (de) | 1969-10-30 |
DE1929797A1 (de) | 1970-01-08 |
FR2013360A1 (de) | 1970-04-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3358865A (en) | Container closure | |
US3193128A (en) | Container closure | |
US3587897A (en) | Container closure | |
US4307821A (en) | Container-closure assembly | |
US5269429A (en) | Closure cap for infusion or transfusion bottles | |
US3071274A (en) | Cap structure for bottles | |
CA2142905C (en) | Two piece all plastic seal | |
US3547297A (en) | Container closure having integral opening means | |
US4589561A (en) | Tamper-proof closure for containers | |
US3782578A (en) | Opener for disposable closure | |
US3028992A (en) | Reusable tamper-indicating container closure | |
US3838785A (en) | Tamper-proof plastic cap | |
US3379326A (en) | Container closure | |
US20140209603A1 (en) | Stopping device and container comprising such a device | |
US5114030A (en) | Tip off container cap with removable stem | |
US4179044A (en) | Closure cap for pouring or dispensing tops of bottles or similar receptacles | |
US2765960A (en) | Reusable retentive closure for containers | |
US3439825A (en) | Container closure | |
US3170602A (en) | Cover for containers | |
US3122261A (en) | Capseals for container closures | |
US4130220A (en) | Tamperproof cover | |
US2751102A (en) | Closure cap | |
US3071271A (en) | Safety cap | |
CA2022476C (en) | Improved bridge design for tamper evident closures | |
US4540099A (en) | Tamper indicating package |