Patent US3589551A successfully refreshed from Google Patents.
US3589551A
Expired / Lapsed
US
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Locking device for cover of containers
Assignee: Individual
•
Filing: 1969-05-06
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Granted: 1971-06-29
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Expires: 1989-05-06
Abstract
Abstract Locking device for cover of containers with an elastic rim running around the opening, which device consists of elastic flaps which can be bent round and pressed into the space between the inside of the rim and the container wall into locked position with said wall.
Inventors
- 👤 Rolf Haggbom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0214; B65D43/0218; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00259; B65D2543/00296; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00509; B65D2543/00537; B65D2543/00555; B65D2543/00824; B65D2543/00833; B65D2543/00842
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
In a locking device for a cover of plastic material for a container having a rim running around the opening, the locking device comprising a flap arranged in the edge of the cover, the improvement wherein at least part of the flap is elastic so as to enable the outer end of the flap to be bent around and pressed into the space between the inside of the rim and the wall of the container and to be held in locked position in engagement with said wall, the length D of the flap in the direction out from the edge of the cover being greater than the distance C between the wall of the container and the inside of the rim.
Claim 2
Dependent Claim
121 words
In a locking device for a cover of plastic material for a container having a rim running around the opening, the locking device comprising a flap arranged in the edge of the cover, the improvement wherein at least part of the flap is elastic so as to enable the outer end of the flap to be bent around and pressed into the space between the inside of the rim and the wall of the container and to be held in locked position in engagement with said wall, the length D of the flap in the direction out from the edge of the cover being greater than the distance C between the wall of the container and the inside of the rim.
Claim 3
Dependent Claim
23 words
Locking device in accordance with claim 1, wherein the outer bendable end of the flap is thinner than the remainder of the flap.
Claim 4
Dependent Claim
33 words
Locking device in accordance with claim 1, wherein on the lower side of the rim of the container there is a recess and a projection for removably retaining the flap in locked position.
Claim 5
Dependent Claim
16 words
Locking device in accordance with claim 1, wherein the flap is formed with a gripping portion.
Claim 6
Dependent Claim
45 words
Locking device in accordance with claim 1, wherein the outer end of the flap, when pressed into the space between the inside of the rim and the wall of the container, is removably retained in locked position in engagement with a projection on said wall.
Claim 7
Dependent Claim
25 words
Locking device in accordance with claim 1, wherein the flap is normally in an unfolded, open position owing to the resiliency of the cover material.
References Cited (Backward Citations)
US1901581A
Cited
US1948920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |