Patent US4506875A successfully refreshed from Google Patents.
US4506875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction-box feed device
Assignee: Martin SA
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Filing: 1982-12-23
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Granted: 1985-03-26
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Expires: 2002-12-23
Abstract
Abstract Feeder with a movable suction box, intended more particularly for equipping a magazine supplying sheets to a machine for making cases consisting of corrugated cardboard. The suction plate (10) of its suction box (6) is surrounded by a frame (17) made of flexible material, the assembly being designed in such a way so as to form a suction cup with flexible edges (26).
Inventors
- 👤 Bernard Capdebosco
- 👤 Jean-Luc Mion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:54
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/12; B65H3/122
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
171 words
A feed device for supplying sheets to a processing machine in which each sheet is fed from the bottom of a stack (2) delimited by a down stream abutment (4), comprising (a) at least one suction box (6) driven in a longitudinal to-and-fro movement and provided with a suction plate (10); (b) at least one frame (17), made of flexible material, surrounding said suction plate (10) so as to form with it a hollow suction cup fixed in vertical position and having flexible edges (26) located above the upper level (21) of said plate (10) in the absence of a said sheet being sucked up, i.e., when said edges are raised, and located in alignment with or below said plate (10) when a sheet (22, 23) is sucked up, i.e., when said edges are turned down; (c) said device being so dimensioned and arranged that a leading edge of said flexible frame (17) does not move, in the most retracted position of said suction box (6), beyond said downstream abutment (4).
Claim 2
Dependent Claim
171 words
A feed device for supplying sheets to a processing machine in which each sheet is fed from the bottom of a stack (2) delimited by a down stream abutment (4), comprising (a) at least one suction box (6) driven in a longitudinal to-and-fro movement and provided with a suction plate (10); (b) at least one frame (17), made of flexible material, surrounding said suction plate (10) so as to form with it a hollow suction cup fixed in vertical position and having flexible edges (26) located above the upper level (21) of said plate (10) in the absence of a said sheet being sucked up, i.e., when said edges are raised, and located in alignment with or below said plate (10) when a sheet (22, 23) is sucked up, i.e., when said edges are turned down; (c) said device being so dimensioned and arranged that a leading edge of said flexible frame (17) does not move, in the most retracted position of said suction box (6), beyond said downstream abutment (4).
Claim 3
Dependent Claim
41 words
A feed device according to claim 1, so dimensioned and arranged that a trailing edge of said flexible frame (17) does not move, in the most advanced position of said suction box (6), beyond the forward edge of said stack (2).
Claim 4
Dependent Claim
23 words
A feed device as claimed in claim 1, wherein said frame is composed of a coating made of plastic bonded to a cloth.
Claim 5
Dependent Claim
26 words
A feed device as claimed in claim 3, wherein said frame is fitted in such a way that the cloth side is directed towards the top.
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) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |