IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0565515
(2009-09-23)
|
등록번호 |
US-8875927
(2014-11-04)
|
발명자
/ 주소 |
- Pohlman, Mike
- Cimmerer, Tim
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
11 |
초록
▼
A container includes a lid adapted to seal with a base. The lid and base rims each have vertical segments that mate upon sealing the container. The mating segments form a vertical seal zone. The vertical seal zone has a width extending across the rim surfaces. One or more vent channels are disposed
A container includes a lid adapted to seal with a base. The lid and base rims each have vertical segments that mate upon sealing the container. The mating segments form a vertical seal zone. The vertical seal zone has a width extending across the rim surfaces. One or more vent channels are disposed on either or both rims. Each vent channel extends partially into the vertical seal zone. When pressure inside the container reaches a critical level, the lid rises and reduces the width of the seal zone, creating a vent point. Pressurized vapors traveling through the vent channel overcome rim-engaging forces at the vent point and pass through the engaged rims. Once pressure is purged, the lid descends and resumes its sealed arrangement with the base. The rims may respectively include horizontally oriented segments that engage each other to from a horizontal seal zone.
대표청구항
▼
1. A plastic food container comprising: a base and a lid;the base having a base rim and the lid having a lid rim;the lid rim forming a downwardly descending retaining bead;the base rim and lid rim adapted for sealing engagement with each other, the sealing engagement achieved by the downwardly desce
1. A plastic food container comprising: a base and a lid;the base having a base rim and the lid having a lid rim;the lid rim forming a downwardly descending retaining bead;the base rim and lid rim adapted for sealing engagement with each other, the sealing engagement achieved by the downwardly descending retaining bead snap fitting within and being frictionally held by the base rim by virtue of that snap fit;the base rim and lid rim each having a vertically oriented segment;the vertically oriented segments of the base rim and lid rim each having a mating surface;the mating surfaces of the vertically oriented segments adapted for complementary engagement with each other when the container is in sealed engagement;the mating surfaces when engaged creating a first vertical seal zone extending around the periphery of the container, the first vertical seal zone having a width defined by the engaged mating surfaces when the container is in the sealed arrangement;one or more vent channels disposed on the lid rim or base rim and extending upwardly and partially into the width of the first vertical seal zone, each of the one or more vent channels defining an area of partial peripheral discontinuity of the first vertical seal zone where the mating surfaces of the vertically oriented segments do not contact each other when the container is in the sealed arrangement;the mating surfaces when engaged also creating a second vertical seal zone, the second vertical seal zone constituting a portion of the first vertical seal zone; andthe second vertical seal zone being continuous about the periphery of the container and being defined by the portion of the width of the first vertical seal zone located above the one or more vent channels. 2. The container of claim 1 further comprising: the base rim and lid rim each having a horizontally oriented, peripherally projecting segment;the horizontally oriented, peripherally projecting segments of the base rim and lid rim each having a mating surface;the mating surfaces of the horizontally oriented, peripherally projecting segments adapted for complementary engagement with each other when the container is in sealed engagement; andthe mating surfaces of the horizontally oriented, peripherally projecting segments defining a horizontal seal zone when the container is in sealed engagement. 3. The container of claim 2 wherein the one or more vent channels define an area of complete discontinuity across the width of the horizontal seal zone. 4. The container of claim 1 wherein the lid of the container is adapted to remain engaged to the base, but allow the egress of gases and vapors inside the sealed container through the one or more vent channels upon the pressure in the sealed container reaching a certain level without repositioning of the lid on the base. 5. The container of claim 1 wherein the container has a plurality of vent channels that are equally spaced on the lid rim. 6. The plastic food container of claim 1 wherein: the downwardly descending retaining bead is formed from a lid rim inner wall, a lid rim horizontally oriented, peripherally projecting segment and a lid rim outer wall, the lid rim outer wall being canted;the base rim includes a base rim inner wall, a base rim horizontally oriented, peripherally projecting segment and a base rim outer wall, the base rim inner wall being canted; andwhen the container is in sealed engagement, the canted lid rim outer wall frictionally engages the canted base rim inner wall. 7. A plastic food container comprising: a base and a lid;the base having a base rim and the lid having a lid rim;the base rim and lid rim adapted for sealing engagement with each other;the base rim having an inner wall and an outer wall and the lid rim having an inner wall and outer wall;the base rim inner wall and the lid rim outer wall each having a mating surface;the mating surfaces of the base rim inner wall and the lid rim outer wall being adapted for complementary engagement with each other when the container is in sealed engagement;the mating surfaces when engaged creating a first vertical seal zone extending around the periphery of the container, the first vertical seal zone having a width defined by the engaged mating surfaces when the container is in the sealed arrangement;one or more vent channels disposed on the lid rim or base rim and extending upwardly and partially into the width of the first vertical seal zone, each of the one or more vent channels defining an area of partial peripheral discontinuity of the first vertical seal zone where the mating surfaces of the base rim inner wall and lid rim outer wall do not contact each other when the container is in sealed engagement;the mating surfaces when engaged also creating a second vertical seal zone, the second vertical seal zone constituting a portion of the first vertical seal zone; andthe second vertical seal zone being continuous about the periphery of the container and being defined by the portion of the width of the first vertical seal zone located above the one or more vent channels. 8. The plastic food container of claim 7 wherein: the lid rim outer wall and base rim inner wall are canted; andwhen the container is in sealed engagement, the canted lid rim outer wall frictionally engages the canted base rim inner wall. 9. The container of claim 8 further comprising: the base rim and lid rim each having a horizontally oriented, peripherally projecting segment;the horizontally oriented, peripherally projecting segments of the base rim and lid rim each having a mating surface;the mating surfaces of the horizontally oriented, peripherally projecting segments adapted for complementary engagement with each other when the container is in sealed engagement; andthe mating surfaces of the horizontally oriented, peripherally projecting segments defining a horizontal seal zone when the container is in sealed engagement. 10. The container of claim 9 wherein the one or more vent channels define an area of complete discontinuity across the width of the horizontal seal zone. 11. The container of claim 8 wherein the lid of the container is adapted to remain engaged to the base, but allow the egress of gases and vapors inside the sealed container through the one or more vent channels upon the pressure in the sealed container reaching a certain level. 12. The plastic food container of claim 7 wherein: the lid rim outer wall and base rim inner wall are canted; andwhen the container is in sealed engagement, the canted lid rim inner wall frictionally engages the canted base rim outer wall. 13. A plastic food container comprising: a base and a lid, the base having a base rim and the lid having a lid rim and an upper portion;the base rim having a base rim inner wall, a base rim horizontally oriented, peripherally projecting segment and a base rim outer wall;the lid rim having a lid rim inner wall, a horizontally oriented, peripherally projecting segment and a lid rim outer wall, the lid rim inner wall, the horizontally oriented peripherally projecting segment and the lid rim vertically oriented outer wall forming a downwardly descending bead;the base rim and lid rim adapted for sealing engagement with each other in which the downwardly descending bead of the lid snap fits within and is frictionally held by the base rim inner wall by virtue of that snap fit;the base rim inner wall and lid rim outer wall each having a mating surface, the mating surfaces of the base rim inner wall and the lid rim outer wall adapted for complementary engagement with each other when the container is in sealed engagement and the mating surfaces when engaged creating a first vertical seal zone extending around the periphery of the container, the first vertical seal zone having a width defined by the engaged mating surfaces when the container is in sealed engagement;the horizontally oriented peripherally projecting segments of the base rim and lid rim each having a mating surface, the mating surfaces of the horizontally oriented, peripherally projecting segments adapted for complementary engagement with each other when the container is in sealed engagement and the mating surfaces of the horizontally oriented, peripherally projecting segments defining a horizontal seal zone when the container is in sealed engagement;one or more vent channels disposed on the lid rim or base rim, the one or more vent channels defining define an area of complete discontinuity across the width of the horizontal seal zone and extending upwardly and partially into the width of the first vertical seal zone, each of the one or more vent channels defining an area of partial peripheral discontinuity of the first vertical seal zone where the mating surfaces of the base rim inner wall and lid rim outer wall do not contact each other when the container is in sealed engagement;the mating surfaces of the base rim inner wall and the lid rim outer wall when engaged also creating a second vertical seal zone, the second vertical seal zone constituting a portion of the first vertical seal zone; andthe second vertical seal zone being continuous about the periphery of the container and being defined by the portion of the width of the first vertical seal zone located above the one or more vent channels.
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