Patent US3921848A successfully refreshed from Google Patents.
US3921848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerosol dispensing and similar metal cans adapted to contain a pressurized fluid
Assignee: Rio Tinto Switzerland AG
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Filing: 1973-12-03
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Granted: 1975-11-25
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Expires: 1993-12-03
Abstract
Abstract A metal aerosol dispensing can has a cylindrical side wall and a separate bottom fitted to the side wall by a rolled joint including overlapping edges of the bottom and of the side wall. After forming the joint, the bottom and joint are pushed wholly within the cylindrical side wall, the lower part of the side wall thus being folded inwardly. The folded parts of the side wall can then be inwardly deformed to form a rim supporting the joint.
Inventors
- 👤 Gilbert Dolveck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:20
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/62; A47C7/68; A47C7/70; B; B65; B65D; B65D7/00; B65D7/12; B65D7/34; B65D7/36; B65D83/00; B65D83/14; B65D83/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
154 words
A can for containing a pressurized fluid comprising, a tubular body, an inwardly concave bottom having a peripheral outward reverse fold fixed to said body and closing the bottom of said tubular body, said tubular body having a sidewall annular in cross section with a lower marginal portion reversely folded inwardly of the can extending away from a lower fold and including a fold overlapping the outward reverse fold of said bottom and jointly therewith defining a seam axially spaced inwardly from said lower fold fixing the bottom to the tubular body, said lower fold extending radially inwardly of the can body it underlies defining an inner diameter of the lower fold progressively decreasing in a direction away from said bottom, and said bottom having a greater outer diameter than the minimum inner diameter of said lower fold, whereby said lower fold coacts with said seam in fixing the bottom axially on said body.
Claim 2
Dependent Claim
154 words
A can for containing a pressurized fluid comprising, a tubular body, an inwardly concave bottom having a peripheral outward reverse fold fixed to said body and closing the bottom of said tubular body, said tubular body having a sidewall annular in cross section with a lower marginal portion reversely folded inwardly of the can extending away from a lower fold and including a fold overlapping the outward reverse fold of said bottom and jointly therewith defining a seam axially spaced inwardly from said lower fold fixing the bottom to the tubular body, said lower fold extending radially inwardly of the can body it underlies defining an inner diameter of the lower fold progressively decreasing in a direction away from said bottom, and said bottom having a greater outer diameter than the minimum inner diameter of said lower fold, whereby said lower fold coacts with said seam in fixing the bottom axially on said body.
Claim 3
Dependent Claim
25 words
A can for containing a pressurized fluid according to claim 1, in which said reverse fold partially underlies said outward reverse fold of said bottom.
Claim 4
Dependent Claim
30 words
A can for containing a pressurized fluid according to claim 2, in which said lower fold of said body is axially spaced from said outward reverse fold of said bottom.
Claim 5
Dependent Claim
34 words
A can for containing a pressurized fluid according to claim 2, in which said lower fold of said body and said reverse fold of said bottom have a same curvature and are in contact.
References Cited (Backward Citations)
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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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |