US4197099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for mounting and holding filter bags and the like
Assignee: CREDITANSTALT BANKVEREIN
•
Filing: 1977-11-28
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Granted: 1980-04-08
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Expires: 1997-11-28
Abstract
Abstract The present invention refers to the mounting of filter bags and the like of the kind comprising the mounting of such filter bags in a frame which holds them by means of a holding ring and which applies pressure against the outer walls of the frame, securing the lip of the bags between the body of the frame and the holding ring.
Inventors
- 👤 Bo E. I. H. Lundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:25
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/023; B01D29/00; B01D29/50; B01D29/52; Y; Y10; Y10S; Y10S55/00; Y10S55/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
A four piece apparatus for holding or mounting filter bags and the like comprising: an integral parallel-sided outer main frame provided with a radially inwardly extending interior flange and an axially extending outer flange connected thereto; a support device of suitable length placed radially inside said axially extending outer flange in overlying relation relative to said interior flange, said axialy extending outer flange having an interior radially inwardly extending peripheral porjection positioned at a distance from said radially inwardly extending interior flange and with the support device positioned between said interior flange and said peripheral projection; a filter bag having an upper open end defined by a mounting lip and with the bag having several filtration units; said support device supporting said filter bag with the main frame by means of the mounting lip; and a parallel sided locking ring telescoped inside the axially extending outer flange between said peripheral projection and said support device such that pressure is applied in two directions, the first direction applying radial pressure against the mounting lip and the peripheral projection, and the second direction applying axial pressure between the mounting lip and the support device.
Claim 2
Dependent Claim
192 words
A four piece apparatus for holding or mounting filter bags and the like comprising: an integral parallel-sided outer main frame provided with a radially inwardly extending interior flange and an axially extending outer flange connected thereto; a support device of suitable length placed radially inside said axially extending outer flange in overlying relation relative to said interior flange, said axialy extending outer flange having an interior radially inwardly extending peripheral porjection positioned at a distance from said radially inwardly extending interior flange and with the support device positioned between said interior flange and said peripheral projection; a filter bag having an upper open end defined by a mounting lip and with the bag having several filtration units; said support device supporting said filter bag with the main frame by means of the mounting lip; and a parallel sided locking ring telescoped inside the axially extending outer flange between said peripheral projection and said support device such that pressure is applied in two directions, the first direction applying radial pressure against the mounting lip and the peripheral projection, and the second direction applying axial pressure between the mounting lip and the support device.
Claim 3
Dependent Claim
55 words
An apparatus for securing or mounting filter bags and the like as set forth in claim 1, in which between said interior flange and the peripheral projection there is sufficient space to permit the mounting of the support device and the locking ring as well as the periphery or mounting lip of the filter bag.
Claim 4
Dependent Claim
76 words
An apparatus for securing or mounting filter bags and the like as set forth in claim 1, in which the support device for the filtration units consists of a secondary frame provided with slightly flexed longitudinal bars to assure both support and suitable spreading of the filtration units of said filter bag, as well as to give the adequate projection of the upper parts of filtration material of the several filtration units of the filter bag.
Claim 5
Dependent Claim
45 words
An apparatus for securing or mounting filter bags and the like as set forth in claim 1, in which said support device consists of independent bars mounted on the interior flange by means of yokes which permit the said support bars to be freely mounted.
Claim 6
Dependent Claim
55 words
An apparatus for securing or mounting filter bags and the like as set forth in claim 1, in which the locking ring exerts pressure against the inside faces of the outer main frame, said locking ring having intermediate slight inside loops in order to secure pressure also in intermediate parts of said outer main frame.
Claim 7
Dependent Claim
46 words
An apparatus for securing or mounting filter bags or the like as set forth in claim 5, in which said locking ring has small twists in the corners or as an alternative it has loops in the middle parts of said locking ring for handling purposes.
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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) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |