US4312255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for edge trimming of a moving material web
Assignee: Tetra Pak AB
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Filing: 1979-11-28
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Granted: 1982-01-26
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Expires: 1999-11-28
Abstract
Abstract An edge trimming device is provided for the trimming of moving laminate webs which include a carrier layer and at least one outer layer. A cutting device is supported by a resilient support so that the cutting device is capable of lateral movement while remaining perpendicular to the laminate web. The cutting device trims the edge of the laminate web as it passes by the cutting device. Preferably, the cutting device cuts the outer layer which extends from a longitudinal edge of the carrier layer.
Inventors
- 👤 Sven N. H. Holmstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:17
CPC Classifications
B; B65; B65H; B65H35/00; B65H35/02; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/34; B23Q1/36; B26; B26D; B26D1/00; B26D1/01; B26D1/02; B26D1/025; B26D7/00; B26D7/26; B26D7/2614; B26D2007/0012; B26D2007/0068; B26D2007/2685; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6584; Y10T83/6603; Y10T83/869; Y10T83/8776; Y10T83/929; Y10T83/9493
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
142 words
An edge trimming device for use in trimming a moving laminate web which includes a carrier layer and at least one outer layer comprising: cutting means for cutting an edge portion of the laminate web; resiliently biased support means supporting the cutting means with said support means being capable of lateral movement while permitting the cutting means to remain substantially perpendicular to the laminate web; a movable base to which said support means is connected and means to urge the cutting means against the edge of the carrier layer of the laminate web; a cutting means holder, said support means disposed on either side of the cutting means holder, said support means supporting the cutting means and said cutting means holder with said support means and said movable base forming a parallelogram-like structure; and wherein said support means consists of leaf springs.
Claim 2
Dependent Claim
142 words
An edge trimming device for use in trimming a moving laminate web which includes a carrier layer and at least one outer layer comprising: cutting means for cutting an edge portion of the laminate web; resiliently biased support means supporting the cutting means with said support means being capable of lateral movement while permitting the cutting means to remain substantially perpendicular to the laminate web; a movable base to which said support means is connected and means to urge the cutting means against the edge of the carrier layer of the laminate web; a cutting means holder, said support means disposed on either side of the cutting means holder, said support means supporting the cutting means and said cutting means holder with said support means and said movable base forming a parallelogram-like structure; and wherein said support means consists of leaf springs.
Claim 3
Dependent Claim
81 words
An edge trimming device for use in trimming a moving laminate web which includes a carrier layer and at least one outer layer comprising: cutting means for cutting an edge portion of the laminate web; resiliently biased support means supporting the cutting means with said support means being capable of lateral movement while permitting the cutting means to remain substantially perpendicular to the laminate web; and wherein the support means comprises two parallel rigid links connected by a diagonally extending spring.
Claim 4
Dependent Claim
81 words
An edge trimming device for use in trimming a moving laminate web which includes a carrier layer and at least one outer layer comprising: cutting means for cutting an edge portion of the laminate web; resiliently biased support means supporting the cutting means with said support means being capable of lateral movement while permitting the cutting means to remain substantially perpendicular to the laminate web; and wherein the support means comprises two parallel rigid links connected by a diagonally extending spring.
Claim 5
Dependent Claim
17 words
The edge trimming device of claim 2 wherein the tension of said diagonally extending spring is adjustable.
Claim 6
Dependent Claim
146 words
An edge trimming device for use in trimming a moving laminate web which includes a carrier layer and at least one outer layer comprising: a substantially flat cutting blade; a holder, means mounting said cutting blade on said holder; a base; and a pair of links spaced apart from each other and connecting said holder to said base, said blade being positioned on said holder between said links, said links including means for resiliently biasing said holder to resist lateral movement whereby upon lateral displacement of said holder, said cutting blade is urged against an edge portion of the carrier layer while said cutting blade remains substantially perpendicular to the laminate web so that said cutting blade can cut off an edge portion of the at least one outer layer while being moved laterally by the edge portion of the carrier layer of the laminate web.
Claim 7
Dependent Claim
146 words
An edge trimming device for use in trimming a moving laminate web which includes a carrier layer and at least one outer layer comprising: a substantially flat cutting blade; a holder, means mounting said cutting blade on said holder; a base; and a pair of links spaced apart from each other and connecting said holder to said base, said blade being positioned on said holder between said links, said links including means for resiliently biasing said holder to resist lateral movement whereby upon lateral displacement of said holder, said cutting blade is urged against an edge portion of the carrier layer while said cutting blade remains substantially perpendicular to the laminate web so that said cutting blade can cut off an edge portion of the at least one outer layer while being moved laterally by the edge portion of the carrier layer of the laminate web.
Claim 8
Dependent Claim
31 words
The edge trimming device of claim 4 wherein said link means include leaf springs, and wherein said holder said leaf springs and said movable base together form a parallelogram-like resilient structure.
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) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |