Patent US2725218A successfully refreshed from Google Patents.
US4136802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray dispenser with spring biased flexible container
Assignee: Continental Group Inc
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Filing: 1977-09-21
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Granted: 1979-01-30
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Expires: 1997-09-21
Abstract
Abstract A dispensing unit which may be readily incorporated in an enclosure, such as a conventional can. The dispensing unit includes a readily collapsible bag in which a product to be dispensed is stored, and a plurality of spring strips. Each of the spring strips is of a construction to inherently roll into a coiled form and constantly urging the collapsing of the container. When the container is incorporated in an enclosure of the general can type including an upper end unit secured to a body by a seam, upper end portions of the spring strips may be anchored within the seam.
Inventors
- 👤 Carmen T. Mascia
- 👤 Gary K. Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:02
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/771; B65D83/7714; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/08; B05B9/0805; B05B9/0838; B65D83/76; B65D83/766
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
A dispensing unit for a container, said dispensing unit comprising a readily collapsible container having a bottom wall, and a spring mechanism engageable with said bottom wall, said spring mechanism including a plurality of spring strips each inherently urged towards a rolled condition, said spring strips being spaced about the exterior of said container and extend along the axial length of said container terminating in lower end portions underlying said bottom wall.
Claim 2
Dependent Claim
72 words
A dispensing unit for a container, said dispensing unit comprising a readily collapsible container having a bottom wall, and a spring mechanism engageable with said bottom wall, said spring mechanism including a plurality of spring strips each inherently urged towards a rolled condition, said spring strips being spaced about the exterior of said container and extend along the axial length of said container terminating in lower end portions underlying said bottom wall.
Claim 3
Dependent Claim
19 words
The dispensing unit of claim 1 wherein said container includes a body of a generally reversely folded axial section.
Claim 4
Dependent Claim
15 words
The dispensing unit of claim 1 wherein each spring strip defines a constant tension spring.
Claim 5
Dependent Claim
16 words
The dispensing unit of claim 1 wherein said spring strips are carried by a common support.
Claim 6
Dependent Claim
25 words
The dispensing unit of claim 1 wherein said spring strips are carried by a common support having means for anchorage relative to an enclosing receptacle.
Claim 7
Dependent Claim
14 words
The dispensing unit of claim 1 wherein said container includes a dispensing valve mechanism.
Claim 8
Dependent Claim
21 words
The dispensing unit of claim 1 together with an enclosing receptacle, and means anchoring said spring strips relative to said receptacle.
Claim 9
Dependent Claim
32 words
The dispensing unit of claim 7 wherein said receptacle includes an end unit secured to body by way of a seam, and said spring strips have upper ends anchored in said seam.
Claim 10
Dependent Claim
20 words
The dispensing unit of claim 8 wherein said end unit includes means for anchoring an upper part of said container.
Claim 11
Dependent Claim
37 words
The dispensing unit of claim 8 wherein said means anchoring said spring strips in said seam relative to said receptacle is in the form of an annular support member with which said spring strips are integrally formed.
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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |