US3620402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction of polyolefin containers
Assignee: Richardson Co
•
Filing: 1969-08-28
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Granted: 1971-11-16
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Expires: 1989-08-28
Abstract
Abstract A container constructed at least partially of polyolefin and the remainder of a rubber composition or other easily bondable material, is made with at least one airtight seal with an excellent bond strength which is formed from mating surfaces of adjoining sections of the container wherein at least one of the sections is polyolefin. As illustrated by a thin-walled, electric storage-battery container constructed of polypropylene and having multicompartments wherein each compartment is to be isolated from the others, the seals are formed by oxidizing the adjoining surfaces preferably by an oxidizing flame and by applying a curable adhesive on the oxidized surfaces to form the desired bond.
Inventors
- 👤 Robert J Wentland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:59
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; H; H01; H01M; H01M50/00; H01M50/10; H01M50/147; H01M50/166; H01M50/171; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/12; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
The battery container of claim 1 whereiN the adhesive on the mating surfaces is a epoxy resin.
Claim 2
Dependent Claim
17 words
The battery container of claim 1 wherein the polypropylene on the mating surfaces is flame oxidized polypropylene.
Claim 3
Dependent Claim
19 words
The battery container of claim 1 wherein the walls have a thickness not in excess of about 0.150 inch.
Claim 4
Dependent Claim
12 words
The battery container of claim 1 wherein the mating surfaces are multiplanar.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |