US3773589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can body
Assignee: Rexam Beverage Can Co
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Filing: 1971-11-26
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Granted: 1973-11-20
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Expires: 1991-11-26
Abstract
Abstract A metal can body is formed with a longitudinally extending lap side seam which is securely bonded with a nylon type high strength organic adhesive. In order to provide a strong permanent bond in the side seam, the body is precoated with an epoxy type coating which adheres tenaciously to both the adhesive and to the metallic body surfaces.
Inventors
- 👤 E Kaiser
- 👤 K Rentmeester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
B; B65; B65D; B65D7/00; B65D7/12; B65D7/34; B65D7/38; B21; B21D; B21D51/00; B21D51/16; B21D51/26; B21D51/2676; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
38 words
The method of claim 1 of fabricating a can body, in which said organic adhesive applied within the seam is a linear superpolyamide having recurring aliphatic amido groups separated by alkylene groups having at least two carbon atoms.
Claim 2
Dependent Claim
45 words
a resinous glycidyl polyether having glyceRyl groups united with the divalent residue of a polyhydric phenol through ether oxygen atoms, having terminal glycidyl groups providing an epoxide equivalent of from 425 to 6,000, and having a number average molecular weight of from 1,000 to 4,000,
Claim 3
Dependent Claim
8 words
an alkenyl ether of a polymethylol phenol, and
Claim 4
Dependent Claim
21 words
The method of claim 1 of fabricating a can body, in which said organic coating formulation also contains a phenolic resin.
Claim 5
Dependent Claim
21 words
The method of claim 1 of fabricating a can body, in which said organic coating formulation also contains a urea-formaldehyde resin.
Claim 6
Dependent Claim
29 words
an amine phosphate acid addition salt selected from the group consisting of mono(dibutylamine) pyrophosphate, triethylamine metaphosphate, tertiaryoctylamine metaphosphate, laurylamine metaphosphate, allylamine metaphosphate, triamylamine pyrophosphate, dicyclohexylamine metaphosphate, and mixtures thereof.
Claim 7
Dependent Claim
40 words
The method of claim 1 of fabricating a can body, in which said organic coating formulation, as applied to at least one of the surfaces of the sheet metal to be formed into said can body, comprises the following materials:
Claim 8
Dependent Claim
34 words
The method of claim 5, in which the organic coating formulation applied to both surfaces of the sheet metal to be formed into said can body comprises said materials (1), (2), (3), and (4).
Claim 9
Dependent Claim
15 words
The method of claim 5, in which said amine phosphate material (4) is mono(dibutylamine) pyrophosphate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |