US3785481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-chamber container
Assignee: Kerr Corp
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Filing: 1971-08-12
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Granted: 1974-01-15
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Expires: 1991-08-12
Abstract
Abstract A container having two chambers defined by a partition member, each chamber holding a particular material, and a plunger to move the partition to a position wherein the separator permits the fluid from one chamber to flow to the other chamber and be mixed therein. Means are provided to prevent the partition member from falling into the chamber where the mixing takes place while still permitting the material to flow from one chamber to the other.
Inventors
- 👤 Coche P Allet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:09
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/60; A61C5/66
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
334 words
A container for the packaging and mixing of predetermined amounts of materials comprising a housing formed by first and second interconnectable sections, said second section having a closed lower end, a movable partition member located in one of said sections of said housing, said partitIon member when in a first position dividing the interior of said housing into first and second chambers each for holding a respective first and second material which are to be admixed, said second chamber being formed at least in part by said second housing section including its closed lower end, the internal volume of the second chamber being sufficiently great to accommodate the materials in both said chambers, a plunger accessible from outside of said housing having a portion extending through said housing for moving within said first chamber from a first position to a second position to move said partition member within said housing in a corresponding manner from its first position in which the partition member separates the two chambers to a second position, means on the interior of said housing in the zone between the first and second positions of said partition member forming a passage for transfer of the material in said first chamber to said second chamber as the material in said first chamber is moved into said zone by said plunger portion, said partition member blocking the passage for transfer of the material in said first chamber when in said first position and said plunger portion and said partition member sealing off the passage from the two materials in the second chamber and closing off the top of said second chamber, when both said plunger and said partition members are in their respective second positions, and means on the interior wall of the housing for engaging and holding said partition member at its second position to form a part of the second chamber to permit mixing of the two materials therein, the mixed materials being removable by disassembling the two interconnected housing sections.
Claim 2
Dependent Claim
334 words
A container for the packaging and mixing of predetermined amounts of materials comprising a housing formed by first and second interconnectable sections, said second section having a closed lower end, a movable partition member located in one of said sections of said housing, said partitIon member when in a first position dividing the interior of said housing into first and second chambers each for holding a respective first and second material which are to be admixed, said second chamber being formed at least in part by said second housing section including its closed lower end, the internal volume of the second chamber being sufficiently great to accommodate the materials in both said chambers, a plunger accessible from outside of said housing having a portion extending through said housing for moving within said first chamber from a first position to a second position to move said partition member within said housing in a corresponding manner from its first position in which the partition member separates the two chambers to a second position, means on the interior of said housing in the zone between the first and second positions of said partition member forming a passage for transfer of the material in said first chamber to said second chamber as the material in said first chamber is moved into said zone by said plunger portion, said partition member blocking the passage for transfer of the material in said first chamber when in said first position and said plunger portion and said partition member sealing off the passage from the two materials in the second chamber and closing off the top of said second chamber, when both said plunger and said partition members are in their respective second positions, and means on the interior wall of the housing for engaging and holding said partition member at its second position to form a part of the second chamber to permit mixing of the two materials therein, the mixed materials being removable by disassembling the two interconnected housing sections.
Claim 3
Dependent Claim
29 words
A container as in claim 1 wherein said means on the interior wall of the housing for engaging and holding the partition means comprises a projection on said housing.
Claim 4
Dependent Claim
33 words
A container according to claim 1 wherein the plunger portion engages the rear surface of said partition member when both said plunger portion and said partition member are in their respective second positions.
Claim 5
Dependent Claim
45 words
A container according to claim 1 wherein the passage forming means between the two chambers comprises at least one recess formed on the inner wall of the housing starting at a point adjacent the point of rest of the partition member at its first position.
Claim 6
Dependent Claim
13 words
A container according to claim 1 wherein said partition member is disc shaped.
Claim 7
Dependent Claim
46 words
A container according to claim 1 wherein the part of said plunger accessible from outside of the housing becomes substantially flush with said housing when said plunger portion and said partition members are in their respective second positions to preclude further movement of said partition member.
Claim 8
Dependent Claim
31 words
A container according to claim 1 wherein the material in said first chamber is a liquid and force is transmitted from said plunger portion to said partition member through said liquid.
Claim 9
Dependent Claim
31 words
A container as in claim 1 wherein said plunger portion within said first chamber forms a seal with the interior wall of the housing in the area remote from the passage.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |