Patent US3740933A successfully refreshed from Google Patents.
US3740933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum trash collector
Assignee: Individual
•
Filing: 1971-06-07
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Granted: 1973-06-26
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Expires: 1991-06-07
Abstract
Abstract A vacuum trash collector having a device for restraining the movement of a plastic bag used therein. A rigid cylindrical liner is slipped inside the bag and this assembly then placed in the trash collecting bin. During operation, the liner will prevent the plastic bag from collapsing and blocking air flow. When the bin is filled, the liner may be slipped out of the bag and reused. In one embodiment, the liner has an annular deflecting lip at one end.
Inventors
- 👤 J Hollowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:59
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1418; E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; E01H1/0836; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
In combination, a vacuum trash collector comprising a bin, a lid surmounting said bin, a collection inlet leading into said bin, a vacuum blower having an inlet exposed to the interior of the bin and an outlet leading to the atmosphere, a disposable bag lining the interior of said bin and subjected at its interior to the vacuum created at the inlet of said blower so that the bag would ordinarily have a tendency to be drawn against and block said inlet, and a rigid cylindrical liner having a diameter slightly less than that of said bag, said liner being disposed within said bag to prevent the bag from being drawn up against said blower inlet, the liner being manually withdrawable from said bag after it has been filled.
Claim 2
Dependent Claim
129 words
In combination, a vacuum trash collector comprising a bin, a lid surmounting said bin, a collection inlet leading into said bin, a vacuum blower having an inlet exposed to the interior of the bin and an outlet leading to the atmosphere, a disposable bag lining the interior of said bin and subjected at its interior to the vacuum created at the inlet of said blower so that the bag would ordinarily have a tendency to be drawn against and block said inlet, and a rigid cylindrical liner having a diameter slightly less than that of said bag, said liner being disposed within said bag to prevent the bag from being drawn up against said blower inlet, the liner being manually withdrawable from said bag after it has been filled.
Claim 3
Dependent Claim
49 words
The combination according to claim 1, said blower inlet being disposed above said bin, the top of said liner being further provided with a frustoconical annular lip extending downwardly and into the liner so that debris will be trapped by said lip and prevented from entering the blower inlet.
Claim 4
Dependent Claim
10 words
The combination according to claim 1, said bag being impervious.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |