US4962797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-cutting method for bag filling machines
Assignee: Individual
•
Filing: 1989-08-11
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Granted: 1990-10-16
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Expires: 2009-08-11
Abstract
Abstract A method for separating a pair of plastic bags, connected together at a transversely disposed parting line, comprises the steps of intermittently moving the pair of bags along a path disposed in a horizontal plane, stopping the bags and placing the parting line over an opening extending transversely relative to the path and positioned between a pair of platens, clamping the pair of bags to the platens and severing the parting line to separate the pair of bags from each other by moving a cutting blade in a horizontal direction and transversely through the opening.
Inventors
- 👤 Peter N. Thomsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:25
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/12; B65B43/123; B65B3/00; B65B3/04; B65B3/045; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7487
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A method for separating a pair of plastic bags apart from each other along a severable and transversely disposed parting line therebetween comprising the steps of intermittently moving said pair of bags along a path disposed in a horizontal plane, stopping movement of said pair of bags along said path to place said severable parting line over an opening defined between a pair of platens and extending transversely relative to said path, clamping said pair of bags to said pair of platens, and severing said paring line by moving severing means in a horizontal direction, transversely through said opening, to separate each of said pair of bags from each other.
Claim 2
Independent Claim
110 words
A method for separating a pair of plastic bags apart from each other along a severable and transversely disposed parting line therebetween comprising the steps of intermittently moving said pair of bags along a path disposed in a horizontal plane, stopping movement of said pair of bags along said path to place said severable parting line over an opening defined between a pair of platens and extending transversely relative to said path, clamping said pair of bags to said pair of platens, and severing said paring line by moving severing means in a horizontal direction, transversely through said opening, to separate each of said pair of bags from each other.
Claim 3
Dependent Claim
55 words
The method of claim 1 wherein said clamping step comprises clamping a leading end of a trailing bag of said pair of bags to a first platen of said pair of platens and clamping a trailing end of a leading bag of said pair of bags to a second platen of said pair of platens.
Claim 4
Dependent Claim
42 words
The method of claim 2 wherein said clamping step comprises clamping the trailing end of said leading bag to said second platen at a position vertically lower than whereat the leading end of said trailing bag is clamped to said first platen.
Claim 5
Dependent Claim
25 words
The method of claim 1 or 2 wherein said severing step comprises moving a cutting blade through said severable parting line, transversely of said path.
Claim 6
Dependent Claim
50 words
The method of claim 1 or 2 wherein each of said pair of bags has a filling gland secured thereto and said moving step comprises guiding movement of said gland along said path and holding said gland in a fixed position during each of said stopping, clamping and severing steps.
Claim 7
Dependent Claim
24 words
The method of claim 5 wherein said severing step comprises projecting said severing means upwardly through said opening from beneath said pair of platens.
Claim 8
Independent Claim
135 words
A method for cutting a pair of plastic bags apart along a severable parting line therebetween comprising the steps of intermittently moving said pair of bags along a path, stopping movement of said pair of bags along said path to place said severable parting line over an opening defined between first and second platens, clamping said pair of bags to said first and second platens, said clamping step comprising clamping the trailing end of a leading bag of said pair of bags to said second platen at a position vertically lower than whereat a leading end of a trailing bag of said pair of bags is clamped to said first platen, and severing said parting line in a horizontal direction, transversely through said opening, to separate each of said pair of bags from each other.
Claim 9
Independent Claim
135 words
A method for cutting a pair of plastic bags apart along a severable parting line therebetween comprising the steps of intermittently moving said pair of bags along a path, stopping movement of said pair of bags along said path to place said severable parting line over an opening defined between first and second platens, clamping said pair of bags to said first and second platens, said clamping step comprising clamping the trailing end of a leading bag of said pair of bags to said second platen at a position vertically lower than whereat a leading end of a trailing bag of said pair of bags is clamped to said first platen, and severing said parting line in a horizontal direction, transversely through said opening, to separate each of said pair of bags from each other.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |