US5389175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a pleated filter material
Assignee: Mann and Hummel GmbH
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Filing: 1993-07-16
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Granted: 1995-02-14
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Expires: 2013-07-16
Abstract
Abstract A method and apparatus for the manufacture of a pleated filter from an endless web of filter material scores a web of filter material scored in a scoring station. The web of filter material is then passed with a set pleat spacing into cogbelts. The filter material web is then severed by a cutter into pieces suitable for further processing.
Inventors
- 👤 Berthold Wenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:45
CPC Classifications
B; B65; B65H; B65H45/00; B65H45/12; B65H45/20; B01; B01D; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B31; B31D; B31D5/00; B31D5/0082; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B65H20/00; B65H2701/00; B65H2701/10; B65H2701/11; B65H2701/112; B65H2701/1123; B65H2701/11231; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1015; Y10T156/1016; Y10T156/102
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
A method for the manufacture of a pleated filter material web from an endless web of filter material, comprising: scoring the filter material web; introducing the filter material web between at least two cogbelts spaced apart from one another and disposed above and below the filter material web and running with the filter web, the cogbelts subsequently pleating the filter material web according to the scoring; and advancing the pleated filter material with a defined distance between pleats by at least one helix adjoining the cogbelts.
Claim 2
Independent Claim
86 words
A method for the manufacture of a pleated filter material web from an endless web of filter material, comprising: scoring the filter material web; introducing the filter material web between at least two cogbelts spaced apart from one another and disposed above and below the filter material web and running with the filter web, the cogbelts subsequently pleating the filter material web according to the scoring; and advancing the pleated filter material with a defined distance between pleats by at least one helix adjoining the cogbelts.
Claim 3
Dependent Claim
28 words
A method according to claim 1, further comprising guiding the pleated filter material web with at least two spacing belts that run lengthwise of the filter material web.
Claim 4
Dependent Claim
35 words
A method according to claim 2, further comprising severing the filter material web which has been scored, pleated and advanced so as to allow transfer of the severed filter material web from the endless web.
Claim 5
Dependent Claim
22 words
A method according to claim 3, further comprising removing the severed filter material web from the endless web by a transfer device.
Claim 6
Dependent Claim
32 words
A method according to claim 4, wherein the step of removing the filter material web from the endless web by a transfer device includes operating the transfer device with comb shaped elements.
Claim 7
Dependent Claim
33 words
A method according to claim 4, wherein the step of removing the filter material web from the endless web by a transfer device includes operating the transfer device with grippers having foam elements.
Claim 8
Dependent Claim
27 words
A method according to claim 4, further comprising directly encasing lateral edges of the filter material web in plastic after the filter material web has been pleated.
Claim 9
Dependent Claim
30 words
A method according to claim 4, further comprising applying a bead of glue to the filter material web in a glue station after the filter material web has been pleated.
Claim 10
Dependent Claim
26 words
A method according to claim 4, further comprising combining a strip with edges of the filter material web after the filter material web has been pleated.
Claim 11
Dependent Claim
25 words
A method according to claim 9, wherein the step of combining includes combining the strip with the filter material web by application of high frequencies.
Claim 12
Dependent Claim
24 words
A method according to claim 9, wherein the step of combining includes combining the strip with the filter material web by application of pressure.
References Cited (Backward Citations)
US3321345A
Cited
WO1986007580A1
Cited
US4798575A
Cited
EP0260267B1
Cited
GB2209354A
Cited
DE8908176U1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-13 | 1998-08-15 | 1999-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-13 | 2002-08-15 | 2003-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-13 | 2006-08-15 | 2007-02-14 | $7700.00 | Window Closed / Lapsed |