Patent US3243937A successfully refreshed from Google Patents.
US3243937A
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Apparatus for expanding bags
Assignee: Waldorf Paper Products Co
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Filing: 1962-11-05
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Granted: 1966-04-05
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Robert O Ragan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:29
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/26; B65B43/34; B31; B31B; B31B70/00; B31B70/003; B31B2150/00; B31B2150/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A BAG OPENING APPARATUS FOR USE IN COMBINATION WITH A SERIES OF CONTIGUOUS BAGS ARRANGED IN FLAT FACE CONTACT, THE BAGS HAVING A CLOSED END AND AN OPEN END, AND THE BAGS BEING CONNECTED IN A CHAIN BY SEPARABLE SPOTS OF ADHESIVE BETWEEN THE SIDES OF THE BAGS NEAR THE OPEN END THEREOF, THE APPARATUS INCLUDING A HOPPER FOR SUPPORTING SAID BAGS IN FACE CONTACT, A SERIES OF MANDRELS ENGAGEABLE INTO THE OPEN ENDS OF SAID BAGS TO HOLD THE BAGS OPEN, MEANS SUPPORTING SAID MANDRELS IN SPACED RELATION FOR MOVEMENT ABOUT AN ENDLESS PATH, MEANS FOR MOVING SAID MANDRELS ABOUT SAID PATH WHILE ENGAGED IN AT LEAST ONE BAG ACTING TO SUCCESSIVELY OPEN SAID BAGS IN SAID CHAIN, AND MEANS GUIDING THE BAGS OF SAID CHAIN SUCCESSIVELY ON TO SAID MANDRELS AS THEY ARE DRAWN FROM SAID HOPPER.
Claim 2
Dependent Claim
139 words
A BAG OPENING APPARATUS FOR USE IN COMBINATION WITH A SERIES OF CONTIGUOUS BAGS ARRANGED IN FLAT FACE CONTACT, THE BAGS HAVING A CLOSED END AND AN OPEN END, AND THE BAGS BEING CONNECTED IN A CHAIN BY SEPARABLE SPOTS OF ADHESIVE BETWEEN THE SIDES OF THE BAGS NEAR THE OPEN END THEREOF, THE APPARATUS INCLUDING A HOPPER FOR SUPPORTING SAID BAGS IN FACE CONTACT, A SERIES OF MANDRELS ENGAGEABLE INTO THE OPEN ENDS OF SAID BAGS TO HOLD THE BAGS OPEN, MEANS SUPPORTING SAID MANDRELS IN SPACED RELATION FOR MOVEMENT ABOUT AN ENDLESS PATH, MEANS FOR MOVING SAID MANDRELS ABOUT SAID PATH WHILE ENGAGED IN AT LEAST ONE BAG ACTING TO SUCCESSIVELY OPEN SAID BAGS IN SAID CHAIN, AND MEANS GUIDING THE BAGS OF SAID CHAIN SUCCESSIVELY ON TO SAID MANDRELS AS THEY ARE DRAWN FROM SAID HOPPER.
References Cited (Backward Citations)
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US2437117A
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US2601480A
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US2671602A
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |