US3799419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for slowing down and stopping moving webs or foil
Assignee: Agfa Gevaert AG
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Filing: 1973-01-08
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Granted: 1974-03-26
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Expires: 1993-01-08
Abstract
Abstract Apparatus for controlling the movement of a web comprising a suction table, linkage means connected to said suction table and detector means which actuates said linkage means, said suction table being provided with a normally sealed vacuum reservoir which is opened by operation of said linkage means on actuation of said detector on detection of a fault in said web whereby said vacuum is applied to said web to apply a braking force thereto.
Inventors
- 👤 H Bussmann
- 👤 O Peckhaus
- 👤 H Frenken
- 👤 W Schweicher
- 👤 K Voss
- 👤 P Herzhoff
- 👤 H Gref
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:48
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74; B; B65; B65H; B65H23/00; B65H23/04; B65H23/24; B65H23/245; G03B; G03B35/00; G03B35/18; G03B35/24
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
Apparatus for controlling the movement of a web comprising a suction table, linkage means connected to said suction table, actuator means connected to said linkage means for actuating said linkage means, said suction table being provided with a normally sealed vacuum reservoir which is opened by operation of said linkage means on actuation of said actuator means whereby said vacuum is applied to said web to apply a braking force thereto and said linkage means being adapted to move said vacuum table into contact with said web on actuation by said actuator means.
Claim 2
Dependent Claim
93 words
Apparatus for controlling the movement of a web comprising a suction table, linkage means connected to said suction table, actuator means connected to said linkage means for actuating said linkage means, said suction table being provided with a normally sealed vacuum reservoir which is opened by operation of said linkage means on actuation of said actuator means whereby said vacuum is applied to said web to apply a braking force thereto and said linkage means being adapted to move said vacuum table into contact with said web on actuation by said actuator means.
Claim 3
Dependent Claim
20 words
Apparatus as claimed in claim 1 in which said linkage means has a power transmission ratio of at least 2:1.
Claim 4
Dependent Claim
36 words
Apparatus as claimed in claim 1 in which said suction table is provided with a plurality of apertures and with a chamber which is open in both the inoperative and operative positions of the linkage means.
Claim 5
Dependent Claim
22 words
Apparatus as claimed in claim 3 which the volume of said chamber is small compared to the volume of said vacuum reservoir.
Claim 6
Dependent Claim
19 words
Apparatus as claimed in claim 1 which is provided with means for measuring the vacuum in said suction table.
Claim 7
Dependent Claim
14 words
Apparatus as claimed in claim 1, wherein said linkage means comprises a rocking linkage.
Claim 8
Dependent Claim
14 words
Apparatus as claimed in claim 1, wherein said actuator means comprises a pneumatic plunger.
Claim 9
Dependent Claim
78 words
Apparatus as claimed in claim 1, wherein said suction table comprises an apertured surface, intermediate lugs, a base, seal means between and lugs and said base, slide means connecting said vacuum table to said base whereby said suction table is permitted to move towards and away from said web, and said seals bing constructed and arranged to seal said apertured surface from said vacuum reservoir when said suction table is disposed remote from said web on said base.
Claim 10
Dependent Claim
29 words
Apparatus as claimed in claim 8, wherein said base comprises a pedestal element having a plate element upon a leg, and said seals being provided on said plate element.
Claim 11
Dependent Claim
94 words
Apparatus as claimed in claim 9, wherein said suction table comprises a hollow chamber having said apertured surface, an opening in said chamber in a wall remote from apertured surface through which said leg is inserted, said lugs extending within said chamber adjacent said apertured surface and in line with the outside of said plate, a flexible vacuum tight seal between said leg and said opening in said chamber and said seAl means being disposed in said periphery of said plate for contacting said lugs when said chamber is disposed remote from said web.
Claim 12
Dependent Claim
41 words
Apparatus as claimed in claim 10, wherein stop projections are provided in said chamber adjacent said opening for reacting against the surface of said plate remote from said apertured surface for limiting the travel of said suction table against 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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |