Patent EP0252649A2 successfully refreshed from Google Patents.
Patent US3556515A successfully refreshed from Google Patents.
US3556515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for transporting sheet-material members
Assignee: Mueller Martini Druckverarbeitungs Systeme AG
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Filing: 1968-04-02
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Granted: 1971-01-19
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Expires: 1988-04-02
Abstract
Abstract A collating machine is provided with a guide channel having a guide surface juxtaposed with sheet-material members which are to be transported in the guide channel. Advancing means effects advancing of the sheet-material members along the guide channel. Conduit means serves to blow a gaseous fluid between the guide surface and the surface of sheet material members facing the guide surface so as to establish therebetween a cushion of pressurized gaseous fluid which prevents direct frictional contact between the guide surface and the sheet material members.
Inventors
- 👤 Hans Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:19
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/16; B65H39/00; B65H39/02; B65H39/04; B65H39/055
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
251 words
In an apparatus for transporting sheet-material members, particularly in a paper-collating apparatus, a combination comprising wall means defining an elongated guide channel for transportation of sheet-material members and having two transversely spaced sides, a lateral at least substantially vertical stationary surface extending along one of said sides and a stationary guide surface extending between said sides and including a first surface portion downwardly inclined toward said lateral surface from the other of said sides and a substantially horizontal second surface portion adjacent said lateral surface, said guide surface having a longitudinal slot extending along said lateral surface intermediate the same and said other side; assembling means for assembling a stack of sheet-material members on said guide surface; advancing means comprising a conveyor chain extending lengthwise of said channel and having engagement portions comprising engaging pins projecting through said slot for engaging said stack of sheet-material members and advancing it along said channel over said guide surface; and means for producing and maintaining a cushion of gaseous fluid under pressure between said guide surface and a stack of sheet-material members on the same to thereby avoid displacement of said sheetmaterial members relative to one another as well as with reFerence to said guide surface in response to being transported along said channel by said advancing means, including at least one row or bores provided in said guide surface and extending along said slot between the same and said other side, and a source of gaseous fluid under pressure communicating with said bores.
Claim 2
Dependent Claim
251 words
In an apparatus for transporting sheet-material members, particularly in a paper-collating apparatus, a combination comprising wall means defining an elongated guide channel for transportation of sheet-material members and having two transversely spaced sides, a lateral at least substantially vertical stationary surface extending along one of said sides and a stationary guide surface extending between said sides and including a first surface portion downwardly inclined toward said lateral surface from the other of said sides and a substantially horizontal second surface portion adjacent said lateral surface, said guide surface having a longitudinal slot extending along said lateral surface intermediate the same and said other side; assembling means for assembling a stack of sheet-material members on said guide surface; advancing means comprising a conveyor chain extending lengthwise of said channel and having engagement portions comprising engaging pins projecting through said slot for engaging said stack of sheet-material members and advancing it along said channel over said guide surface; and means for producing and maintaining a cushion of gaseous fluid under pressure between said guide surface and a stack of sheet-material members on the same to thereby avoid displacement of said sheetmaterial members relative to one another as well as with reFerence to said guide surface in response to being transported along said channel by said advancing means, including at least one row or bores provided in said guide surface and extending along said slot between the same and said other side, and a source of gaseous fluid under pressure communicating with said bores.
Claim 3
Dependent Claim
44 words
In an apparatus as defined in claim 1, said last-mentioned means further comprising closed pressure fluid conduit extending along said guide channel and communicating with said source, and said bores having inner open ends remote from said guide surface and communicating with said conduit.
Claim 4
Dependent Claim
28 words
In an apparatus as defined in claim 2, said source being operative for maintaining the gaseous fluid in said conduit at a pressure not substantially below 0.1 atmosphere.
Claim 5
Dependent Claim
32 words
In an apparatus as defined in claim 3, and further comprising regulating means associated with said source and operative for regulating the flow of gaseous fluid from said source to said conduit.
Claim 6
Dependent Claim
31 words
In an apparatus as defined in claim 4, further comprising pipe means connecting said conduit and said source, and wherein said regulating means comprises valve means arranged in said pipe means.
Claim 7
Dependent Claim
30 words
In an apparatus as defined in claim 1, wherein said bores are spaced from one another in longitudinal direction of said guide channel by a distance not exceeding 20 cm.
Claim 8
Dependent Claim
38 words
In an apparatus as defined in claim 6, wherein said bores are arranged in at least one additional row, both of said rows being substantially parallel and spaced from one another by a distance of substantially 8 mm.
Claim 9
Dependent Claim
19 words
In an apparatus as defined in claim 6, wherein said bores have a diameter of at least 1 mm.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |