US3309837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing a package
Assignee: Union Carbide Corp
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Filing: 1964-10-21
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Granted: 1967-03-21
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Expires: 1984-10-21
Abstract
No abstract record available.
Inventors
- 👤 Clifford C Faust
- 👤 Alvin E Ericson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:34
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/10; B65B51/14; B65B51/146; B65B2051/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
A METHOD FOR PRODUCING A PACKAGE COMPRISING AN ARTICLE COMPLETELY ENCASED IN AN ELASTIC THERMOPLASTIC FILM UNDER TENSION WHICH COMPRISES (A) PREALIGNING SAID ARTICLE IN AN OPEN-MOUTH BAG OF ELASTIC THERMOPLASTIC FILM AT A FIRST STATION, SAID BAG HAVING A LENGTH GREATER THAN THAT REQUIRED TO ENCASE SAID ARTICLE, (B) STRAIGHTENING THE MOUTH OF SAID BAG AT SAID FIRST STATION, (C) MOVING SAID ARTICLE IN SAID BAG TO A SECOND STATION, (D) APPLYING TENSION TO THE OPEN-MOUTH END OF SAID BAG IN A LONGITUDINAL DIRECTION SO AS TO TENSION SAID BAG ABOUT SAID ARTICLE, (E) APPLYING A TRANSVERSE CLAMPING FORCE TO THE MOUTH OF SAID BAG WHILE UNDER TENSION IN AN AREA IMMEDIATELY ADJACENT SAID ARTICLE, (F) RELAXING THE TENSION ON THE OPEN-MOUTH END OF SAID BAG WHILE MAINTAINING SAID CLAMPING FORCE, (G) HEAT SEALING SAID BAG IN A TRANSVERSE REGION COEXTENSIVE WITH SAID CLAMPING AREA, (H) REAPPLYING TENSION TO THE OPEN-MOUTH END OF SAID BAG AT THE TERMINATION OF SAID HEAT SEALING WHILE MAINTAINING SAID CLAMPING FORCE TO SEVER THE EXCESS PORTION OF SAID BAG ALONG THE EDGE OF SAID REGION FURTHEST FROM SAID ARTICLE, (I) COOLING SAID SEALED REGION WHILE MAINTAINING SAID CLAMPING FORCE, (J) RELEASING SAID CLAMPING FORCE, AND (K) REMOVING SAID PACKAGE FROM SAID SECOND STATION BY THE FORCE OF GRAVITY.
Claim 2
Independent Claim
215 words
A METHOD FOR PRODUCING A PACKAGE COMPRISING AN ARTICLE COMPLETELY ENCASED IN AN ELASTIC THERMOPLASTIC FILM UNDER TENSION WHICH COMPRISES (A) PREALIGNING SAID ARTICLE IN AN OPEN-MOUTH BAG OF ELASTIC THERMOPLASTIC FILM AT A FIRST STATION, SAID BAG HAVING A LENGTH GREATER THAN THAT REQUIRED TO ENCASE SAID ARTICLE, (B) STRAIGHTENING THE MOUTH OF SAID BAG AT SAID FIRST STATION, (C) MOVING SAID ARTICLE IN SAID BAG TO A SECOND STATION, (D) APPLYING TENSION TO THE OPEN-MOUTH END OF SAID BAG IN A LONGITUDINAL DIRECTION SO AS TO TENSION SAID BAG ABOUT SAID ARTICLE, (E) APPLYING A TRANSVERSE CLAMPING FORCE TO THE MOUTH OF SAID BAG WHILE UNDER TENSION IN AN AREA IMMEDIATELY ADJACENT SAID ARTICLE, (F) RELAXING THE TENSION ON THE OPEN-MOUTH END OF SAID BAG WHILE MAINTAINING SAID CLAMPING FORCE, (G) HEAT SEALING SAID BAG IN A TRANSVERSE REGION COEXTENSIVE WITH SAID CLAMPING AREA, (H) REAPPLYING TENSION TO THE OPEN-MOUTH END OF SAID BAG AT THE TERMINATION OF SAID HEAT SEALING WHILE MAINTAINING SAID CLAMPING FORCE TO SEVER THE EXCESS PORTION OF SAID BAG ALONG THE EDGE OF SAID REGION FURTHEST FROM SAID ARTICLE, (I) COOLING SAID SEALED REGION WHILE MAINTAINING SAID CLAMPING FORCE, (J) RELEASING SAID CLAMPING FORCE, AND (K) REMOVING SAID PACKAGE FROM SAID SECOND STATION BY THE FORCE OF GRAVITY.
References Cited (Backward Citations)
US2914898A
Cited
US3011295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |