Patent US3759506A successfully refreshed from Google Patents.
US3759506A
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Device and method for forming an accordian pile from a continuous web, using an air current parallel to the web
Assignee: Boewe Boehler and Weber KG
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Filing: 1971-04-23
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Granted: 1973-09-18
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Expires: 1991-04-23
Abstract
Abstract A device for forming an accordion pile from a continuous web has an upright guide plate along which a web formed with equispaced and oppositely directed creases is passed. A support surface is provided below the plate to intercept the web and support the pile. A current of air is caused to flow at high speed parallel to the plate surface between the plate and the web in at least the lower region of the plate to hold very thin webs against the plate as they slide downwardly even at very low speeds. This current of air can be directed in the direction of or transverse to the direction of feed of the web.
Inventors
- 👤 R Eckl
- 👤 K Janson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:20
CPC Classifications
B; B65; B65H; B65H45/00; B65H45/02; B65H45/06; B65H45/10; B65H45/101; B65H45/1015; B41; B41J; B41J15/00; B41J15/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
A device for forming an accordion pile from a web, said device comprising: an upright guide plate for said web having a substantially vertical surface; means for feeding said web in a path downwardly along said surface of said plate; a substantially horizontal support surface below said plate and intercepting said web path, said guide plate reaching downwardly substantially to said support surface; and means along said guide plate for forming an air current parallel to the surface thereof between said plate and said web, said means forming said air current including a plurality of apertures formed in said guide plate, a source of air under pressure communicating with said apertures for causing air flow therethrough from the side of said plate remote from said surface, and structures associated with said apertures for directing the air outflow thereof along said surface of said guide plate.
Claim 2
Independent Claim
145 words
A device for forming an accordion pile from a web, said device comprising: an upright guide plate for said web having a substantially vertical surface; means for feeding said web in a path downwardly along said surface of said plate; a substantially horizontal support surface below said plate and intercepting said web path, said guide plate reaching downwardly substantially to said support surface; and means along said guide plate for forming an air current parallel to the surface thereof between said plate and said web, said means forming said air current including a plurality of apertures formed in said guide plate, a source of air under pressure communicating with said apertures for causing air flow therethrough from the side of said plate remote from said surface, and structures associated with said apertures for directing the air outflow thereof along said surface of said guide plate.
Claim 3
Dependent Claim
42 words
The device defined in claim 1 wherein said structures and apertures are so constructed and arranged as to direct said current transversely to the direction of feed of said web and to provide said current in the lower region of said plate.
Claim 4
Dependent Claim
35 words
The device defined in claim 2 wherein said structures and apertures are so constructed and arranged as to direct said current outwardly from the middle of said plate along said surface of said guide plate.
Claim 5
Dependent Claim
20 words
The device defined in claim 3 wherein said source includes a blower operatively connected to said plate at said apertures.
Claim 6
Dependent Claim
40 words
The device defined in claim 4 wherein saId apertures are disposed in a pair of substantially parallel rows along said plate, the apertures in each row being formed to direct the air away from the apertures in the other row.
Claim 7
Dependent Claim
33 words
The device defined in claim 5 wherein said forming means includes an air shaft formed with said apertures and partly constituted by said plate, said air shaft being operatively connected to said blower.
Claim 8
Dependent Claim
43 words
The device defined in claim 1 wherein said web is formed with a plurality of equispaced creases, said apertures being provided only in a lower region of said plate, said region having a height corresponding to the distance between creases in said web.
Claim 9
Independent Claim
126 words
A method of forming an accordion pile of a web comprising the steps of: forming said web with a plurality of alternately directed equispaced creases; feeding said web downwardly along an upright guide surface; intercepting said web at the base of said plate with a transverse support surface; and blowing and forming an air current parallel to said guide surface between said guide surface and said web at a lower region of said guide surface, said current flowing outwardly at the edges of said web from between said web and said guide surface to hold said web adjacent said plate and to cause said web to fold accordion fashion at said creases, said region having a height corresponding to the distance between creases of said web.
Claim 10
Independent Claim
126 words
A method of forming an accordion pile of a web comprising the steps of: forming said web with a plurality of alternately directed equispaced creases; feeding said web downwardly along an upright guide surface; intercepting said web at the base of said plate with a transverse support surface; and blowing and forming an air current parallel to said guide surface between said guide surface and said web at a lower region of said guide surface, said current flowing outwardly at the edges of said web from between said web and said guide surface to hold said web adjacent said plate and to cause said web to fold accordion fashion at said creases, said region having a height corresponding to the distance between creases of said web.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |