Patent US3270481A successfully refreshed from Google Patents.
US3270481A
Expired / Lapsed
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Method of and mechanism for closing bags
Assignee: Kwik Lok Corp
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Filing: 1965-10-22
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Granted: 1966-09-06
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Rocholl Hans Gerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:05
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/04; B65B51/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A METHOD OF CLOSING THE SLACK NECK OF A PARTIALLY FILLED FLEXIBLE PLASTIC BAG, SAID METHOD INCLUDING THE STEPS OF FLATTENING SAID NECK IN A GIVEN PLANE, WITH SAID NECK EXTENDING AWAY FROM THE FILLED PORTION OF SAID BAG, PINCHING AND PULLING A SIDE EDGE OF SAID FLATTENED BAG NECK AT TWO FIZED POSITION SPACED FROM EACH OTHER ALONG SAID EDGE, SAID PULLING BEING IN PARALLEL DIRECTIONS AWAY FROM AND NORMAL TO SAID BAG NECK, PROGRESSIVELY ADVANCING THE GRIP OF SAID PINCHING AND PULLING STEP TO SUCCESSIVE BAG NECK PORTIONS AS THE LATTER ARE DRAWN THROUGH SAID FIXED POSITIONS SO AS TO PROGRESSIVELY DRAWN A TRANSVERSE SECTION OF SAID BAG NECK THROUGH SAID PORTIONS, AND PRESENTING A CLOSURE TAB HAVING A NARROW EDGE OPENING INWARDLY ENLARGED TO FORM A CLOSURE APERTURE, WITH SAID OPENING LYING ABREAST OF AND BETWEEN SAID POSITIONS AND CLOSE TO SAID PLANE AND FACING THE ADVANCING BAG NECK SECTION WHEREBY THE LATTER IS PROGRESSIVELY DELIVERED THROUGH SAID OPENING AND INTO SAID CLOSURE APERTURES, THUS APPLYING SAID CLOSURE TAB TO SAID BAG NECK AND CLOSING SAID BAG.
Claim 2
Independent Claim
180 words
A METHOD OF CLOSING THE SLACK NECK OF A PARTIALLY FILLED FLEXIBLE PLASTIC BAG, SAID METHOD INCLUDING THE STEPS OF FLATTENING SAID NECK IN A GIVEN PLANE, WITH SAID NECK EXTENDING AWAY FROM THE FILLED PORTION OF SAID BAG, PINCHING AND PULLING A SIDE EDGE OF SAID FLATTENED BAG NECK AT TWO FIZED POSITION SPACED FROM EACH OTHER ALONG SAID EDGE, SAID PULLING BEING IN PARALLEL DIRECTIONS AWAY FROM AND NORMAL TO SAID BAG NECK, PROGRESSIVELY ADVANCING THE GRIP OF SAID PINCHING AND PULLING STEP TO SUCCESSIVE BAG NECK PORTIONS AS THE LATTER ARE DRAWN THROUGH SAID FIXED POSITIONS SO AS TO PROGRESSIVELY DRAWN A TRANSVERSE SECTION OF SAID BAG NECK THROUGH SAID PORTIONS, AND PRESENTING A CLOSURE TAB HAVING A NARROW EDGE OPENING INWARDLY ENLARGED TO FORM A CLOSURE APERTURE, WITH SAID OPENING LYING ABREAST OF AND BETWEEN SAID POSITIONS AND CLOSE TO SAID PLANE AND FACING THE ADVANCING BAG NECK SECTION WHEREBY THE LATTER IS PROGRESSIVELY DELIVERED THROUGH SAID OPENING AND INTO SAID CLOSURE APERTURES, THUS APPLYING SAID CLOSURE TAB TO SAID BAG NECK AND CLOSING SAID BAG.
References Cited (Backward Citations)
US1551525A
Cited
US2705100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |