Patent US2760147A successfully refreshed from Google Patents.
Patent US5064408A successfully refreshed from Google Patents.
US5064408A
Expired / Lapsed
US
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Method and apparatus for producing a plurality of continuous bags
Assignee: Individual
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Filing: 1991-04-11
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Granted: 1991-11-12
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Expires: 2011-04-11
Abstract
Abstract A method and apparatus for producing continuous bags, each bag having an opening on one side from a length of continuous tubing is disclosed. The bags are produced along a direction of production and each bag produced has a sealed end and line of perforation opposite to the sealed end. Each bag is positioned with its sealed end immediately adjacent to the line of perforation of an adjacent bag. The bags are produced by advancing a length of continuous tubing along the direction of production and sealing the tubing at a first location by a sealing means to form a sealed end of a first bag and substantially simultaneously perforating the tubing at a second location immediately adjacent to the sealed end of the first bag by a perforating means to form a line of perforation of a second bag. The second bag is immediately adjacent to the first bag. One layer of the tubing is then severed at the line of perforation without substantially severing the other layer by moving the upper layer relative to the other layer in a direction opposite to the direction of production. Lastly, the method comprises the step of advancing the tubing along the direction of production to form the plurality of continuous bags.
Inventors
- 👤 Daniel N. P. Bridgeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:43
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/14; B31B70/16; B31B2155/00; B31B2155/003; B31B2160/00; B31B2160/10; Y; Y10; Y10T; Y10T225/00; Y10T225/30; Y10T225/35
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
251 words
A method for producing a plurality of continuous bags along a direction of production wherein each bag has a sealed end and a line of perforation opposite to said sealed end, each bag positioned with its sealed end immediately adjacent to the line of perforation of an adjacent bag, said method comprising the steps of: supplying a continuous length of advancing tubing along said direction of production, said tubing having a first layer and a second layer; sealing the first and second layers of said tubing together at a first location by a sealing means to form a sealed end of a first bag; substantially simultaneously thereto, perforating the first and second layers of said tubing at a second location immediately adjacent to said sealed end by a perforating means, to form a line of perforation of a second bag, said second bag immediately adjacent to said first bag; frictionally engaging said first layer of said tubing by maintaining engaging means substantially perpendicularly to said direction of production near said line of perforation; severing the first layer of said tubing at said line of perforation without substantially severing the second layer of said tubing by moving said engaging means while engaged with said first layer of said tubing relative to said second layer of said tubing in a direction substantially opposite to said direction of production; and advancing said tubing along said direction of production past said sealing means and past said perforating means to form said plurality of continuous bags.
Claim 2
Independent Claim
251 words
A method for producing a plurality of continuous bags along a direction of production wherein each bag has a sealed end and a line of perforation opposite to said sealed end, each bag positioned with its sealed end immediately adjacent to the line of perforation of an adjacent bag, said method comprising the steps of: supplying a continuous length of advancing tubing along said direction of production, said tubing having a first layer and a second layer; sealing the first and second layers of said tubing together at a first location by a sealing means to form a sealed end of a first bag; substantially simultaneously thereto, perforating the first and second layers of said tubing at a second location immediately adjacent to said sealed end by a perforating means, to form a line of perforation of a second bag, said second bag immediately adjacent to said first bag; frictionally engaging said first layer of said tubing by maintaining engaging means substantially perpendicularly to said direction of production near said line of perforation; severing the first layer of said tubing at said line of perforation without substantially severing the second layer of said tubing by moving said engaging means while engaged with said first layer of said tubing relative to said second layer of said tubing in a direction substantially opposite to said direction of production; and advancing said tubing along said direction of production past said sealing means and past said perforating means to form said plurality of continuous bags.
Claim 3
Dependent Claim
43 words
The method according to claim 1 wherein said perforating step further comprises: moving a perforating blade in a direction substantially perpendicular to said direction of production against said first layer of said tubing and through said first and second layers of said tubing.
Claim 4
Dependent Claim
37 words
The method according to claim 1 wherein said advancing step further comprises: periodically moving said tubing an incremental distance along said distance of production wherein the incremental distance is substantially equal to the length of said bags.
Claim 5
Dependent Claim
12 words
The method according to claim 3 wherein said incremental distance is adjustable.
Claim 6
Independent Claim
248 words
An apparatus for producing a plurality of continuous bags from a continuous length of tubing, said tubing having a first layer and a second layer, along a direction of production wherein each bag has a sealed end and a line of perforation opposite to said sealed end, each bag positioned with its sealed end immediately adjacent to the line of perforation of an adjacent bag, said apparatus comprising: means for sealing the first and second layers of said tubing together at a first location to form a sealed end of a first bag; means for perforating the first and second layers of said tubing at a second location immediately adjacent to said sealed end to form a line of perforation of a second bag, said second bag immediately adjacent to said first bag; means for actuating said sealing means and said perforating means substantially simultaneously; engaging means for frictionally engaging said first layer of said tubing in a direction substantially perpendicular to said direction of production; said engaging means positioned substantially near said line of perforation; means for severing the first layer of said tubing at said line of perforation without substantially severing the second layer of said tubing wherein said severing means comprises means for pivotally actuating said engaging means, in a direction substantially opposite to the direction of production; and means for advancing said tubing along said direction of production past said sealing means and past said perforating means to form said plurality of continuous bags.
Claim 7
Independent Claim
248 words
An apparatus for producing a plurality of continuous bags from a continuous length of tubing, said tubing having a first layer and a second layer, along a direction of production wherein each bag has a sealed end and a line of perforation opposite to said sealed end, each bag positioned with its sealed end immediately adjacent to the line of perforation of an adjacent bag, said apparatus comprising: means for sealing the first and second layers of said tubing together at a first location to form a sealed end of a first bag; means for perforating the first and second layers of said tubing at a second location immediately adjacent to said sealed end to form a line of perforation of a second bag, said second bag immediately adjacent to said first bag; means for actuating said sealing means and said perforating means substantially simultaneously; engaging means for frictionally engaging said first layer of said tubing in a direction substantially perpendicular to said direction of production; said engaging means positioned substantially near said line of perforation; means for severing the first layer of said tubing at said line of perforation without substantially severing the second layer of said tubing wherein said severing means comprises means for pivotally actuating said engaging means, in a direction substantially opposite to the direction of production; and means for advancing said tubing along said direction of production past said sealing means and past said perforating means to form said plurality of continuous bags.
Claim 8
Dependent Claim
45 words
The apparatus according to claim 5 wherein said means for perforating further comprises: a perforating blade for moving in a direction substantially perpendicular to said direction of production against said first layer of said tubing and through said first and second layers of said tubing.
Claim 9
Dependent Claim
40 words
The apparatus according to claim 5 wherein said means for advancing further comprises: means for periodically moving said tubing an incremental distance along said direction of production wherein the incremental distance of substantially equal to the length of said bags.
Claim 10
Dependent Claim
59 words
The apparatus according to claim 5 wherein said means for advancing said tubing in said direction of production further comprises: a member for physically engaging said tubing at a first position and disengaging said tubing at a second position, wherein the distance between said first position and saad second position is substantially equal to the length of said bags.
Claim 11
Dependent Claim
19 words
The apparatus according to claim 8 wherein said distance between said first position and said second position is adjustable.
References Cited (Backward Citations)
US3269087A
Cited
US3254828A
Cited
US3579948A
Cited
US3743567A
Cited
US4500307A
Cited
US4694638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |