US4294351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Containers
Assignee: Individual
•
Filing: 1979-07-17
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Granted: 1981-10-13
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Expires: 1999-07-17
Abstract
Abstract The present invention provides a multi-compartment container designed for storage and transportation in separated condition of the components of a composition, particularly where the components are interactive, and for admixture of the components when required for use. The container comprises a chamber separated into first and second compartments by a partition, wherein the first compartment is arranged to receive a first component of a composition and the second compartment is arranged to receive a second component of the composition, the partition is mounted on the interior of the container and the first compartment is provided with a plunger which is sealingly slidable within the first chamber, is initially mounted in an extended condition so that the innermost end of the plunger defines a wall of the first compartment opposite to the partition and is arranged to be depressed and to separate a portion of the margin of the partition from the interior of the chamber.
Inventors
- 👤 Jeffery J. Cheetham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:41
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/60; A61C5/66
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
289 words
A container comprising means defining a chamber separated into first and second compartments, the first compartment being arranged to contain a first component of a composition and the second compartment being arranged to contain a second component of the composition, said means defining the chamber comprising a wall means having a closed end and an open end, a partition extending across the wall means, and a plunger slidingly and sealingly located in the open end of the wall means, said plunger having an inner end surface spaced from the partition, the inner surface of the plunger being inclined at an acute angle to the partition and having a leading edge and a trailing edge movable along said wall means during a depression stroke of the plunger, at least the major portion of the interior surface of said wall means over which the leading and trailing edges of said inner surface of said plunger move during its depression stroke defining a chamber portion of substantially uniform lateral dimensions on both sides of said partition, said first compartment being defined by part of the wall means, said partition and the inner surface of said plunger, and the second compartment being defined by the closed end of the wall means and the partition, whereby upon the plunger being depressed the leading edge of the inner surface first separates a corresponding portion of the margin of the partition from the wall means, and then the partition is hinged toward the second compartment by progressive contact with the inner surface and corresponding progressive separation of the margin of the partition from the wall means, the stroke of the plunger being limited so as to leave an unseparated portion of the margin of the partition.
Claim 2
Dependent Claim
289 words
A container comprising means defining a chamber separated into first and second compartments, the first compartment being arranged to contain a first component of a composition and the second compartment being arranged to contain a second component of the composition, said means defining the chamber comprising a wall means having a closed end and an open end, a partition extending across the wall means, and a plunger slidingly and sealingly located in the open end of the wall means, said plunger having an inner end surface spaced from the partition, the inner surface of the plunger being inclined at an acute angle to the partition and having a leading edge and a trailing edge movable along said wall means during a depression stroke of the plunger, at least the major portion of the interior surface of said wall means over which the leading and trailing edges of said inner surface of said plunger move during its depression stroke defining a chamber portion of substantially uniform lateral dimensions on both sides of said partition, said first compartment being defined by part of the wall means, said partition and the inner surface of said plunger, and the second compartment being defined by the closed end of the wall means and the partition, whereby upon the plunger being depressed the leading edge of the inner surface first separates a corresponding portion of the margin of the partition from the wall means, and then the partition is hinged toward the second compartment by progressive contact with the inner surface and corresponding progressive separation of the margin of the partition from the wall means, the stroke of the plunger being limited so as to leave an unseparated portion of the margin of the partition.
Claim 3
Dependent Claim
21 words
A container as claimed in claim 1 wherein said edges sealingly engage said wall means over substantially the full depression stroke.
Claim 4
Dependent Claim
27 words
A container as claimed in claim 1 wherein at least the trailing edge of said plunger sealingly engages said wall means over substantially the full depression stroke.
Claim 5
Dependent Claim
24 words
A container as claimed in claim 1 wherein at least said leading edge sealingly engages said wall means over substantially the full depression stroke.
Claim 6
Dependent Claim
17 words
A container as claimed in claim 1 wherein said partition is integrally formed with said wall means.
Claim 7
Dependent Claim
251 words
A container comprising means defining a chamber separated into first and second compartments, the first compartment being arranged to contain a first component of a composition, and the second compartment being arranged to contain a second component of the composition, wherein the means defining the chamber comprises a wall means having a closed end and an open end, a partition integrally formed with the interior of the wall means, and a plunger having an inner surface slidingly and sealingly located in the open end of the wall means with the inner surface spaced from said partition, the first compartment being defined by part of the wall means, the partition and the inner surface of the plunger, with the inner surface of the plunger lying completely within the wall means in all positions of the plunger so that no part of the first compartment extends beyond the wall means in any direction, the second compartment being defined by the closed end of the wall means and the partition, and the inner surface of the plunger being inclined at an acute angle to the partition and having a leading edge and a trailing edge, whereby upon the plunger being depressed the leading edge of the inner surface first separates a corresponding portion of the margin of the partition from the wall means and then the partition is hinged toward the second compartment by progressive contact with the inner surface and corresponding progressive separation of the margin of the partition from the wall means.
Claim 8
Dependent Claim
251 words
A container comprising means defining a chamber separated into first and second compartments, the first compartment being arranged to contain a first component of a composition, and the second compartment being arranged to contain a second component of the composition, wherein the means defining the chamber comprises a wall means having a closed end and an open end, a partition integrally formed with the interior of the wall means, and a plunger having an inner surface slidingly and sealingly located in the open end of the wall means with the inner surface spaced from said partition, the first compartment being defined by part of the wall means, the partition and the inner surface of the plunger, with the inner surface of the plunger lying completely within the wall means in all positions of the plunger so that no part of the first compartment extends beyond the wall means in any direction, the second compartment being defined by the closed end of the wall means and the partition, and the inner surface of the plunger being inclined at an acute angle to the partition and having a leading edge and a trailing edge, whereby upon the plunger being depressed the leading edge of the inner surface first separates a corresponding portion of the margin of the partition from the wall means and then the partition is hinged toward the second compartment by progressive contact with the inner surface and corresponding progressive separation of the margin of the partition from the wall means.
Claim 9
Dependent Claim
241 words
A container comprising means defining a chamber separated into first and second compartments, the first compartment being arranged to contain a first component of a composition and the second compartment being arranged to contain a second component of the composition, wherein the means defining the chamber comprises a wall means having a closed end and an open end, a partition extending across the wall means, and a plunger having an inner surface, slidingly and sealingly located in the open end of the wall means with the inner surface spaced from the partition, the first compartment being defined by part of the wall means, the partition, and the inner surface of the plunger, and the second compartment being defined by the closed end of the wall means and the partition, and the inner surface of the plunger being inclined at an acute angle to the partition and having a leading edge and a trailing edge, whereby upon the plunger being depressed the leading edge of the inner surface first separates a corresponding portion of the margin of the partition from the wall means and then the partition is hinged toward the second compartment by progressive contact with the inner surface and corresponding progressive separation of the margin of the partition from the wall means, the stroke of the plunger being limited to contact of the trailing edge of the inner surface with a corresponding unseparated portion of the margin of the partition.
Claim 10
Dependent Claim
241 words
A container comprising means defining a chamber separated into first and second compartments, the first compartment being arranged to contain a first component of a composition and the second compartment being arranged to contain a second component of the composition, wherein the means defining the chamber comprises a wall means having a closed end and an open end, a partition extending across the wall means, and a plunger having an inner surface, slidingly and sealingly located in the open end of the wall means with the inner surface spaced from the partition, the first compartment being defined by part of the wall means, the partition, and the inner surface of the plunger, and the second compartment being defined by the closed end of the wall means and the partition, and the inner surface of the plunger being inclined at an acute angle to the partition and having a leading edge and a trailing edge, whereby upon the plunger being depressed the leading edge of the inner surface first separates a corresponding portion of the margin of the partition from the wall means and then the partition is hinged toward the second compartment by progressive contact with the inner surface and corresponding progressive separation of the margin of the partition from the wall means, the stroke of the plunger being limited to contact of the trailing edge of the inner surface with a corresponding unseparated portion of the margin of the partition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |