|Publication number||USRE42943 E1|
|Application number||US 11/041,925|
|Publication date||Nov 22, 2011|
|Priority date||Mar 29, 1999|
|Also published as||US6202870, USRE42910|
|Publication number||041925, 11041925, US RE42943 E1, US RE42943E1, US-E1-RE42943, USRE42943 E1, USRE42943E1|
|Inventors||Woodrow W. Pearce|
|Original Assignee||Innovation Update, Llc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (36), Non-Patent Citations (2), Classifications (17), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
More than one reissue application has been filed for the reissue of U.S. Pat. No. 6,202,870. The reissue applications are Reissue application Ser. No. 09/995,483 which was filed on Nov. 28, 2001 and this application which is a divisional of Reissue application Ser. No. 09/995,483.
This is a divisional application of Reissue application Ser. No. 09/995,483, filed on Nov. 28, 2001, which is a reissue of application Ser. No. 09/277,918 filed Mar. 29, 1999, now U.S. Pat. No. 6,202,870.
This invention relates to bottle caps which when screwed on a bottle allow for the venting of gases generated in the bottle.
Shampoos, cold creams and other cosmetics are typically prepared under heat and are poured into plastic containers such as bottles usually while still hot. The plastic bottles containing the hot cosmetic material are capped, trapping the hot gases generated by the hot cosmetics. When capped, a lower or inner surface 10 of the cap top seats against the mouth 12 of the bottle 14 forming a seal (
A typical way of avoiding pressure build-up and paneling is to fill the bottles with the hot cosmetics and wait for a period of time, typically in the order of 24 hours, before capping the bottles. This approach also slows down the filling process adding to production costs.
Another common way of preventing bottle paneling, incorporates a grooved liner fitted into the bottle cap. The liner typically has a surface that has grooves forming a cross-hatched pattern as well as holes penetrating its thickness. The bottom surface of the liner is covered with a gas permeable layer. When fitted into the cap, the grooved surface of the liner is mated to the lower surface of the cap top. When the cap is screwed onto the bottle, the holes provide a path for gas generated within the bottle to travel to the grooves which provide a path to the inner circumference of the cap from where the gas can escape through the space created between the cap rim and the bottle neck to the exterior of the bottle.
Thus, there is a need for a fail safe bottle cap that would allow for venting of gases generated in a bottle so as to allow for the capping of bottles immediately after being filled with hot liquids.
A bottle cap is provided which when screwed on to a bottle provides a path for gases generated in the bottle to escape from the bottle through a spiraling space formed in the threaded region between the inner surface of the bottle cap rim and the outer surface of the bottle neck.
The bottle cap includes one or a plurality of concentric preferably circular ridges formed on the inner surface of the cap top. Each of these ridges is designed to sit on the rim of the bottle mouth when the cap is threaded onto the bottle neck. A slot or multiple slots are formed in each ridge. The slots between adjacent ridges may be staggered or may be aligned.
In an alternate embodiment, grooves are formed on the inner surface of the cap top. When the bottle cap is threaded onto the bottle neck, the grooves extend from a location on the inner surface of the cap top within the mouth of the bottle neck to a location extending to the outer edge of the mouth rim or beyond the mouth rim of the bottle neck.
With every embodiment, when the cap is threaded onto the bottle, gases generated within the bottle can escape across the rim of the mouth of the bottle neck through the slots or through the grooves and through the threaded region between the inner surface of the cap rim and the outer surface of the bottle neck to the exterior of the bottle.
In an alternate embodiment, the ridges or grooves are formed on a disc which is fitted in the cap over the cap top inner surface. The disc may be glued on the cap inner surface.
A liner may also be used with the caps of the present invention. This liner is typically fitted over the inner surface of the cap top. An opening is formed in the liner to allow for gases generated in the bottle to penetrate the opening and escape through the slots or grooves formed on the cap top or disc.
A cap typically consists of a disc shaped top portion 24 from which extends an annular wall or rim 26 (
In a first embodiment, the cap of the present invention includes a circular ridge 44 formed on the inner surface 46 of the cap top portion (
One or more slots 48 are formed radially across the ridge. If more than one slot is formed, preferably the slots are equidistantly spaced along the ridge circumference. Preferably, four slots are formed spaced at 90° intervals around the ridge.
When the cap is threaded onto the bottle, the ridge sits on the rim 42 of the bottle neck. A seal 50 is formed between the ridge and the bottle mouth. The slots, however, provide a path for gas to escape from the bottle through the slots and out through the threaded spiraling space 52 between the inner surface of the cap annular wall and the outer surface of the bottle neck as shown by arrows 54 (
In an alternate embodiment, instead of a single ridge, multiple concentric spaced apart ridges 56 are formed (
In another embodiment, multiple concentric spaced apart ridges 60, 62, 64 are formed on the inner surface 46 of the cap top portion (
When the cap is torqued onto the bottle neck, the ridges are seated on the rim 42 of the bottle neck forming a seal. The slots provide a path for gas to escape. Gas will first escape through the slots 70 formed on the innermost ridge 60 and travel in the groove 68 formed between the innermost ridge 60 and its adjacent ridge 62 until it reaches the slots 72 formed on the adjacent ridge 62 and then escapes through those slots. The gas then follows the various slot and groove paths until it exits through the threaded space 52 between the cap annular wall inner surface and the bottle neck outer surface.
In a further embodiment, grooves 76 may be formed on the inner surface 78 of the cap top portion inner surface 46 (
The caps of the above described embodiments while allowing gas to vent would also allow some of the liquid to vent if the bottle were turned upside down and squeezed. When squeezed, the liquid material will travel through the slots formed on the ridges and in the later embodiment through the grooves 68. The liquid material would eventually gel in the slots and/or grooves sealing the slots and grooves. Thus, once the gas generated in the bottle has vented, the slots and/or grooves can be sealed by squeezing some of the liquid material through the slots or grooves as described above, thereby, preventing the escape of any further liquid from the capped bottle.
With all of these embodiments, the grooves, ridges and slots may be machined into the cap which is typically made of a hard plastic material. Alternatively, the grooves, ridges and slots may also be formed by a molding process. The cap with grooves, or ridges and slots may be formed by a single molding process. Alternative the grooves, or ridges and slots may be formed by a combination of molding and machining processes.
Because the grooves or ridges are made from the same hard plastic material as the cap, they are not susceptible to collapsing when under compression, as for example, when compressed against the rim 42 of the bottle mouth under normal cap torquing conditions.
With any of the aforementioned caps, a liner 84 may be used if necessary (
Moreover, any of the aforementioned embodiments may be incorporated in non-conventional caps, such as caps having a flip top or a moveable spout. With flip caps 100, the top 120 of the cap is hingedly connected to the annular wall or rim 126 of the cap (
Furthermore, the ridges or grooves may be formed, preferably by a molding or a machining process, on a disc 300 made from a hard or semi-hard material such as plastic (FIGS. 10,11,12,13 and 14). The disc is sized such that it can fit and sit against the inner surface 46 of the cap top portion 24 and such that the ridges 344 (FIGS. 11,12 and 14) or grooves 376 (
The ridges 44 344 or grooves 376 are formed on one surface 302 of the disc, with the opposite surface 304 being flat (
With this latter embodiment, i.e., the embodiment where the ridged surface is mated to the inner surface of the cap top portion, the ridges act as a spacer to separate the disc from the inner surface of the cap top portion. Moreover, with this embodiment, to prevent the bending of the disc when the cap is threaded onto the bottle, the disc should be positioned such that a ridge is located over the bottle neck rim 42.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2162455||Jun 14, 1937||Jun 13, 1939||Owens Illinois Glass Co||Bottle closure|
|US2254815 *||Dec 4, 1939||Sep 2, 1941||Barnby Herbert A||Venting closure|
|US2608841||Nov 16, 1950||Sep 2, 1952||Rice William W||Drinking cup for use by infants and invalids such as chair and bedridden patients|
|US2739724||Feb 16, 1951||Mar 27, 1956||Gora Lee Corp||Safety crown cap|
|US3045854 *||Nov 28, 1958||Jul 24, 1962||Sterling Seal Co||Venting seal for a closure|
|US3589545||Sep 19, 1969||Jun 29, 1971||Greif Brothers Corp The||Vented closure|
|US3696958||Jul 22, 1971||Oct 10, 1972||Us Plywood Champ Papers Inc||Gas venting liquid retaining closure|
|US3717276||Feb 12, 1971||Feb 20, 1973||Owens Illinois Inc||Vented closure|
|US3944104||Nov 25, 1974||Mar 16, 1976||Consumers Glass Company Limited||Threaded wine bottle stopper|
|US3976216||Dec 26, 1974||Aug 24, 1976||Thermo Electron Corporation||Sterile bottle closure|
|US4036386 *||Jun 14, 1976||Jul 19, 1977||The Procter & Gamble Company||Venting closure assembly|
|US4121728||Jul 5, 1977||Oct 24, 1978||Selig Sealing Products||Venting liners|
|US4165816 *||Apr 10, 1978||Aug 28, 1979||Dapco Industries||Vent cap|
|US4190170||Jan 15, 1979||Feb 26, 1980||United States Tobacco Company||Snuff can and the like|
|US4560077 *||Sep 25, 1984||Dec 24, 1985||Sun Coast Plastics, Inc.||Plastic closure cap|
|US4595835||Aug 19, 1983||Jun 17, 1986||Commissariat A L'energie Atomique||Material ionizing device|
|US4598835||Oct 22, 1984||Jul 8, 1986||Metal Box Public Limited Company||One-piece plastics closure|
|US4717034 *||Jul 6, 1982||Jan 5, 1988||Owens-Illinois Closure Inc.||One-piece thermoplastic closure having press-on screw off structure including spaced vertical ribs in the skirt of the closure|
|US4789074||Jul 10, 1987||Dec 6, 1988||Minnesota Mining And Manufacturing Company||Cap liner|
|US4880127||Mar 3, 1989||Nov 14, 1989||Japan Crown Cork Co., Ltd.||Composite vessel lid|
|US5152419||Nov 2, 1990||Oct 6, 1992||Jidosha Kiki Co., Ltd.||Cap for reserve tanks|
|US5257708||Mar 18, 1993||Nov 2, 1993||Createchnic Ag||Plastic snap hinge closure|
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|US5542585||Aug 31, 1994||Aug 6, 1996||Polytop Corporation||Dispensing closure with pivotably mounted spout and means for limiting travel thereof|
|US5730306||Mar 31, 1994||Mar 24, 1998||The Clorox Company||Bi-directional venting liner|
|US5743420||Dec 1, 1993||Apr 28, 1998||Alcoa Deutschland Gmbh||Plastic closure|
|US5785196||Oct 29, 1996||Jul 28, 1998||Rexam Closures Inc.||Closure for a pressurized container|
|US5803286||Oct 2, 1996||Sep 8, 1998||Crown Cork Ag||Plastic closure cap with early venting inner seal|
|US5853096 *||Nov 25, 1996||Dec 29, 1998||Bartur; Maya H.||Pressure equalizing and foam eliminating cap|
|US5961010||Jan 9, 1998||Oct 5, 1999||Erie Country Plastics Corporation||Dispensing beverage closure|
|US5996859||May 20, 1998||Dec 7, 1999||Creative Packaging Corp.||Hinged dispensing closure|
|CA721124A||Nov 9, 1965||Union Carbide Corp||Sealing disc for container closure|
|DD27360A||Title not available|
|FR1424586A||Title not available|
|FR1571958A||Title not available|
|GB586919A||Title not available|
|1||Closures & Containers Magazine, A Look at Venting, pp. 14-15.|
|2||Closures & Containers Magazine, The Need for Vented Closures, Jan./Feb. 1996, 2 pages.|
|U.S. Classification||215/307, 215/310, 220/837, 215/341, 215/329, 215/902, 215/235, 220/367.1, 215/344, 215/343, 220/810, 215/349|
|International Classification||B65D53/04, B65D51/16|
|Cooperative Classification||Y10S215/902, B65D51/1688|
|May 3, 2005||AS||Assignment|
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PEARCE, WOODROW W.;REEL/FRAME:016182/0518
Effective date: 20050425
Owner name: INNOVATION UPDATE, LLC, CALIFORNIA