Patent US4453648A successfully refreshed from Google Patents.
US4453648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposal bin
Assignee: Frontier Plastics South Wales Ltd
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Filing: 1981-11-19
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Granted: 1984-06-12
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Expires: 2001-11-19
Abstract
Abstract A disposable container for used items of medical equipment such as hypodermic needles, has an entry chute in its upper wall and an internal self-closing door flap which will swing downwards to allow an object to enter and swing upwards under gravity to close the chute. When the container is full a locking probe is inserted through a hole in the top wall, where it is locked by barbs and presses down a lever attached to the door to hold the door positively closed without any risk of accidental opening.
Inventors
- 👤 John Harris
- 👤 John E. Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:24
CPC Classifications
B; B65; B65F; B65F1/00; B65F1/14; B65F1/16; A; A61; A61B; A61B50/00; A61B50/30; A61B50/36; A61B50/362; B65F2220/00; B65F2220/128; Y; Y10; Y10S; Y10S220/00; Y10S220/908; Y10T; Y10T292/00; Y10T292/51
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
A hygienic container for refuse, comprising a body including an inwardly directed chute defining an entrance opening adjacent the top, a movable door pivotally mounted on a pivot located within said body, and biased upwards to a closed position closing the entrance at the inner end of said chute, said door having a projection extending beyond said pivot, and locking means operable from outside said container, said locking means comprising a plug having an enlarged head and a body, the container having an aperture through which the body but not the head of the plug is insertable, the container and the plug having coacting structure whereby when the plug is inserted in the aperture, the plug becomes locked in the aperture and the head of the probe closes the aperture and the body of the plug engages the said projection of said door for irreversibly holding the door closed.
Claim 2
Dependent Claim
149 words
A hygienic container for refuse, comprising a body including an inwardly directed chute defining an entrance opening adjacent the top, a movable door pivotally mounted on a pivot located within said body, and biased upwards to a closed position closing the entrance at the inner end of said chute, said door having a projection extending beyond said pivot, and locking means operable from outside said container, said locking means comprising a plug having an enlarged head and a body, the container having an aperture through which the body but not the head of the plug is insertable, the container and the plug having coacting structure whereby when the plug is inserted in the aperture, the plug becomes locked in the aperture and the head of the probe closes the aperture and the body of the plug engages the said projection of said door for irreversibly holding the door closed.
Claim 3
Dependent Claim
16 words
A container according to claim 1 in which an upper part of said container is transparent.
Claim 4
Dependent Claim
27 words
A container according to claim 1, including a device for removing needles from syringes, associated with said aperture to allow the needle to fall into the container.
Claim 5
Dependent Claim
39 words
A container according to claim 1, wherein said projection from said door is formed with a pressure element having a sharp upper profile, and the end of said plug body engages said pressure element to hold said door closed.
References Cited (Backward Citations)
US79801A
Cited
US414635A
Cited
US1169606A
Cited
US1765345A
Cited
US4032037A
Cited
DE2740335A1
Cited
US4371092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |