US3131044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter bag and suspension for dust collecting apparatus
Assignee: Robbins and Myers Inc
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Filing: 1962-05-25
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Granted: 1964-04-28
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 William E Springer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:28
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/28; B; B01; B01D; B01D46/00; B01D46/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A FILTER BAG SUSPENSION FOR SUPPORTING A PLURALITY OF RELATIVELY LONG, DEEP AND NARROW FILTER BAGS IN PARALLEL SPACED RELATION IN A DUST COLLECTING APPARATUS HAVIN A FRONT AND BACK, SAID BAGS BEING DISPOSED IN PARALLEL SIDE BY SIDE RELATION WITH THE INDIVIDUAL BAGS EXTENDING FROM FRONT TO BACK OF SAID APPARATUS; COMPRISING A RECTANGULAR FRAME SECURED IN SAID APPARATUS AND PRESENTING INWARDLY EXTENDING HORIZONTAL FLANGES, FRONT AND BACK HANGER ELEMENTS, BAG SUPPORTING MEANS SECURED TO SAID FRONT AND BACK HANGER ELEMENTS, SAID HANGER ELEMENTS EXTENDING RESPECTIVELY OVER THE FRONT AND BACK HORIZONTAL FLANGES, MEANS ASSOCIATED WITH SAID HANER ELEMENTS FOR ADJUSTING THE HEIGHT AT WHICH SAID SUPPORTING MEANS IS SUSPENDED, GASKETING MEANS FOR THE SIDE OF SAID SUPPORTING MEANS, SAID FILTER BAGS HAVING MEANS FOR SECURING THEM IN SEALING ENGAGEMENT WITH SAID SUPPORTING MEANS AND WITH PORTIONS EXTENDING FORWARDLY AND REARWARDLY UNDER SAID FRONT AND BACK HORIZONTAL FLANGES, SAID ADJUSTING MEANS, UPON RAISING THE SAID SUPPORTING MEANS WITH RESPECT TO SAID FRONT AND REAR FLANGES, ACTING TO PRESS THE FORWARDLY AND REARWARDLY EXTENDING PORTIONS OF SAID BAGS INTO SEALING ENGAGEMENT WITH THE UNDERSIDES OF SAID FRONT AND BACK FLANGES.
Claim 2
Dependent Claim
190 words
A FILTER BAG SUSPENSION FOR SUPPORTING A PLURALITY OF RELATIVELY LONG, DEEP AND NARROW FILTER BAGS IN PARALLEL SPACED RELATION IN A DUST COLLECTING APPARATUS HAVIN A FRONT AND BACK, SAID BAGS BEING DISPOSED IN PARALLEL SIDE BY SIDE RELATION WITH THE INDIVIDUAL BAGS EXTENDING FROM FRONT TO BACK OF SAID APPARATUS; COMPRISING A RECTANGULAR FRAME SECURED IN SAID APPARATUS AND PRESENTING INWARDLY EXTENDING HORIZONTAL FLANGES, FRONT AND BACK HANGER ELEMENTS, BAG SUPPORTING MEANS SECURED TO SAID FRONT AND BACK HANGER ELEMENTS, SAID HANGER ELEMENTS EXTENDING RESPECTIVELY OVER THE FRONT AND BACK HORIZONTAL FLANGES, MEANS ASSOCIATED WITH SAID HANER ELEMENTS FOR ADJUSTING THE HEIGHT AT WHICH SAID SUPPORTING MEANS IS SUSPENDED, GASKETING MEANS FOR THE SIDE OF SAID SUPPORTING MEANS, SAID FILTER BAGS HAVING MEANS FOR SECURING THEM IN SEALING ENGAGEMENT WITH SAID SUPPORTING MEANS AND WITH PORTIONS EXTENDING FORWARDLY AND REARWARDLY UNDER SAID FRONT AND BACK HORIZONTAL FLANGES, SAID ADJUSTING MEANS, UPON RAISING THE SAID SUPPORTING MEANS WITH RESPECT TO SAID FRONT AND REAR FLANGES, ACTING TO PRESS THE FORWARDLY AND REARWARDLY EXTENDING PORTIONS OF SAID BAGS INTO SEALING ENGAGEMENT WITH THE UNDERSIDES OF SAID FRONT AND BACK FLANGES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |