Patent US3822037A successfully refreshed from Google Patents.
US3822037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compactor bag and method of manufacture
Assignee: Dalpak Corp
•
Filing: 1972-02-14
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Granted: 1974-07-02
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Expires: 1992-02-14
Abstract
Abstract A compactor bag includes opposed paper sheets which are joined at the edges and at one end in the manner of a ''''flat'''' bag. A liquid impervious casing extends over the joined ends of the sheets and comprises a length of low density polyethylene which is folded and then heat sealed along the edges. The liquid impervious casing is secured to the paper sheets by separate and distinct joining systems each resistant to attack by a different substance. By this means the liquid impervious casing retains liquid in the compactor bag even though refuse containing substantial amounts of moisture and/or other deleterious materials is deposited in the bag.
Inventors
- 👤 D Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:13
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/04; B65F; B65F1/00; B65F1/04; B65F1/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A bag for use in refuse compactors which comprises: opposed, flat paper sheets joined along opposite edges and at one end to provide a bag having a closed bottom end and an open top end; a liquid impervious casing surrounding the closed end of the bag and extending along the sheets to a point substantially displaced from The open top end of the bag; and dual means securing the liquid impervious casing to the paper sheets for insertion therewith into a refuse receiving bin; said securing means each being substantially impervious to attack by a substance that would weaken the other securing means and each having sufficient strength to secure the liquid impervious casing to the paper sheets notwithstanding the condition of the other securing means.
Claim 2
Dependent Claim
126 words
A bag for use in refuse compactors which comprises: opposed, flat paper sheets joined along opposite edges and at one end to provide a bag having a closed bottom end and an open top end; a liquid impervious casing surrounding the closed end of the bag and extending along the sheets to a point substantially displaced from The open top end of the bag; and dual means securing the liquid impervious casing to the paper sheets for insertion therewith into a refuse receiving bin; said securing means each being substantially impervious to attack by a substance that would weaken the other securing means and each having sufficient strength to secure the liquid impervious casing to the paper sheets notwithstanding the condition of the other securing means.
Claim 3
Dependent Claim
21 words
The bag according to claim 1 wherein the joining means are located adjacent the upper end of the liquid impervious casing.
Claim 4
Dependent Claim
53 words
The bag according to claim 1 wherein the liquid impervious casing comprises a single length of a plastic film which is folded adjacent said one end of the sheets and is joined along the edges of the sheets to form the casing and wherein the sheets comprising the bag are formed from paper.
Claim 5
Dependent Claim
24 words
The bag according to claim 3 wherein the plastic film comprises a thermoplastic film and wherein the edges of the sheets are heat sealed.
Claim 6
Dependent Claim
17 words
The bag according to claim 4 wherein the liquid impervious casing is formed from low density polyethylene.
References Cited (Backward Citations)
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US2530746A
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US2788821A
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US3204760A
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US3554434A
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US3667381A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |