US4921606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seamless filter bags with a removable, refusable ring
Assignee: MECHANICAL MANUFACTURING Corp 30C GLEAM STREET WEST BABYLON NEW YORK 11704
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Filing: 1989-06-30
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Granted: 1990-05-01
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Expires: 2009-06-30
Abstract
Abstract A seamless filter bag having a removable, reusable ring includes a heat sealed filter bag open on one end adapted to receive a removable ring therein. Openings are provided in the filter bag which receive inwardly extending protrusions on the ring thereby maintaining the integrity of the filter bag material. A handle adapted to be received by the inwardly extending protrusions on the filter ring permits the removal of the filter bag together with the ring and any material retained in the bag from a conventional filter basket.
Inventors
- 👤 Sidney Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:00
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/27; B01D29/96; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49604
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A seamless filter bag having a removable, reusable ring comprises, in combination: (a) a filter bag having; (i) heat sealed closed end; (ii) at least one heat sealed side edge; (iii) an open end, said open end being provided with a plurality of notches, and (iv) a plurality of openings, each one of said openings being disposed about the circumference between said notches proximate said open end; and (b) removable filter ring means, said ring means having a plurality of inwardly extending protrusions each one of said protrusion being adapted to be received into one of said openings, the diameter of said ring means being selected to maintain said filter bag open end fully opened.
Claim 2
Dependent Claim
115 words
A seamless filter bag having a removable, reusable ring comprises, in combination: (a) a filter bag having; (i) heat sealed closed end; (ii) at least one heat sealed side edge; (iii) an open end, said open end being provided with a plurality of notches, and (iv) a plurality of openings, each one of said openings being disposed about the circumference between said notches proximate said open end; and (b) removable filter ring means, said ring means having a plurality of inwardly extending protrusions each one of said protrusion being adapted to be received into one of said openings, the diameter of said ring means being selected to maintain said filter bag open end fully opened.
Claim 3
Dependent Claim
18 words
A filter bag according to claim 1 wherein said filter bag open end is provided with six notches.
Claim 4
Dependent Claim
22 words
A filter bag according to claim 2 wherein each of said notches is provided with an included angle of approximately 60 degrees.
Claim 5
Dependent Claim
16 words
A filter bag according to claim 1 wherein each one of said openings is a slit.
Claim 6
Dependent Claim
28 words
A filter bag according to claim 1 wherein said ring means is flat and said inwardly extending protrusions are each provided with an aperture proximate its distal end.
Claim 7
Dependent Claim
118 words
A filter bag according to claim 1 further including elongated handle means, said handle means being adapted to extend from one inwardly extending protrusion to another diametrically opposed inwardly extending protrusion, and having; (a) one end provided with a loop or hook, said loop or hook being adapted to be received into one of said apertures provided on said inwardly extending protrusions, and, (b) the other end is provided with a loop or hook adapted to be received into an aperture provided on said diametrically opposed inwardly extending protrusion; wherein said handle means may remove said filter ring means with said filter bag disposed thereon from a filter basket without spilling the debris retained by said filter bag.
Claim 8
Dependent Claim
21 words
A filter bag according to claim 6 wherein said handle means is fabricated from relatively heavy gauge wire or rod material.
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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) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |