US4547950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of spacing the folds of a folded filter media
Assignee: Honeywell Inc
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Filing: 1984-05-29
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Granted: 1985-10-22
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Expires: 2004-05-29
Abstract
Abstract The method for spacing the folds of a folded filter media assembly includes the steps of separating the folds of the filter media by the use of the tapered assembly comb having uniformly spaced teeth and subsequently inserting a rigid divider into the separated and spaced media folds to produce a uniformly spaced filter media. The comb can be discarded after the divider is inserted, and, accordingly, the comb is made of an inexpensive material having a desired degree of rigidity for handling, e.g., cardboard. The uniformly spaced filter media assembly is inserted into an operative position for filtering, e.g., as an air filter.
Inventors
- 👤 Maynard L. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:23
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D46/52; B01D46/521; B01D46/523; B01D2201/00; B01D2201/12; B01D2201/127; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
A method for spacing the folds of a pleated filter media loosely retained in a peripheral filter enclosure including the steps of progressively inserting a tapered comb having teeth with a tooth depth uniformly varying from a maximum tooth depth at one end of the comb to a minimum tooth depth at the other end of the comb with the teeth being spaced apart the desired distance of the folds in the filter media into the folds of the pleated filter media with each tooth of the comb being located in a respective groove between adjacent folds of the media and subsequently sweeping the tapered comb side-to-side across the filter media to space apart the folds of the filter media within the enclosure.
Claim 2
Independent Claim
123 words
A method for spacing the folds of a pleated filter media loosely retained in a peripheral filter enclosure including the steps of progressively inserting a tapered comb having teeth with a tooth depth uniformly varying from a maximum tooth depth at one end of the comb to a minimum tooth depth at the other end of the comb with the teeth being spaced apart the desired distance of the folds in the filter media into the folds of the pleated filter media with each tooth of the comb being located in a respective groove between adjacent folds of the media and subsequently sweeping the tapered comb side-to-side across the filter media to space apart the folds of the filter media within the enclosure.
Claim 3
Dependent Claim
39 words
A method as set forth in claim 1 wherein the teeth in the comb are uniformly spaced and equal in number to the number of folds in the filter media to uniformly space the folds of the filter media.
Claim 4
Dependent Claim
44 words
A method as set forth in claim 1 wherein the step of inserting the comb includes the step of initially inserting the end of the comb having the greatest tooth depth and proceeding to the end of the comb having a minimum tooth depth.
Claim 5
Dependent Claim
81 words
A method as set forth in claim 1 and including the further steps of subsequently inserting a toothed rigid divider having teeth equal in number and spacing to the teeth in the tapered comb into the spaced apart folds of the filter media with each tooth of the rigid divider being located in a respective groove between adjacent folds of the media and withdrawing the tapered comb from the filter media after the divider is inserted into the filter media folds.
Claim 6
Dependent Claim
84 words
A method as set forth in claim 1 and including the further steps of subsequently inserting a toothed rigid divider having teeth equal in number and spacing to the teeth in the tapered comb into the spaced apart folds of the filter media with each tooth of the rigid divider being located in a respective groove between adjacent folds of the media and retaining the tapered comb in the folds of the filter media after the divider is inserted into the filter media folds.
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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |