US3304843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of plastic packages
Assignee: Individual
•
Filing: 1963-10-18
•
Granted: 1967-02-21
•
Expires: 1983-10-18
Abstract
No abstract record available.
Inventors
- 👤 Jr William S Cloud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/60; B31B70/64; B31B2155/00; B31B2155/002; B31B2160/00; B31B2160/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A METHOD OF FORMING PLASTIC HEAT-SEALED PACKAGES COMPRISING CONTINUOUSLY INTRODUCING TWO ELONGATED WEBS OF HEAT-SEALABLE PLASTIC SHEET MATERIAL INTO A PACKAGE FORMING EQUIPMENT LINE, FORMING FROM ONE OF THE WEBS AND SUPERPOSING UPON ONE RUNNING LONGITUDINAL EDGE PORTION OF ONE WEB A NARROW CONTINUOUS STRIP OF THE SAME SHEET MATERIAL AND MAINTAINING THE CORRESPONDING RUNNING EDGE OF THE OTHER WEB ADJACENT BUT LATERALLY OF SAID STRIP AND IN THE SAME PLANE THEREWITH, MAINTAINING THE OPPOSITE RUNNING EDGES OF BOTH WEBS IN REGISTRATION, NEXT, HEAT-SEALING ON A ROTARY MARGINAL SEALER THE SAID STRIP TO THE FIRST WEB AND HEAT-SEALING SAID OPPOSITE EDGES TOGETHER, THEREAFTER ON A ROTARY TRANSVERSE SEALER HEAT-SEALING THE TWO WEBS TOGETHER TRANSVERSELY OF THEIR WIDTHS AT LONGITUDINALLY SPACED APART UNIFORM INTERVALS WHILE LEAVING THE AFORESAID CORRESPONDING EDGE OF THE OTHER WEB FREE AND UNSEALED EXCEPT AT SAID TRANSVERSE SEALS THEREBY DEFINING WITH SAID STRIP A FILLING OPENING, AND SUBSEQUENTLY SEVERING THE WEBS TRANSVERSELY ALONG THE MIDDLE OF EACH TRANSVERSE SEAL SUCCESSIVELY TO SEPARATE THE COMPLETED PACKAGES.
Claim 2
Independent Claim
168 words
A METHOD OF FORMING PLASTIC HEAT-SEALED PACKAGES COMPRISING CONTINUOUSLY INTRODUCING TWO ELONGATED WEBS OF HEAT-SEALABLE PLASTIC SHEET MATERIAL INTO A PACKAGE FORMING EQUIPMENT LINE, FORMING FROM ONE OF THE WEBS AND SUPERPOSING UPON ONE RUNNING LONGITUDINAL EDGE PORTION OF ONE WEB A NARROW CONTINUOUS STRIP OF THE SAME SHEET MATERIAL AND MAINTAINING THE CORRESPONDING RUNNING EDGE OF THE OTHER WEB ADJACENT BUT LATERALLY OF SAID STRIP AND IN THE SAME PLANE THEREWITH, MAINTAINING THE OPPOSITE RUNNING EDGES OF BOTH WEBS IN REGISTRATION, NEXT, HEAT-SEALING ON A ROTARY MARGINAL SEALER THE SAID STRIP TO THE FIRST WEB AND HEAT-SEALING SAID OPPOSITE EDGES TOGETHER, THEREAFTER ON A ROTARY TRANSVERSE SEALER HEAT-SEALING THE TWO WEBS TOGETHER TRANSVERSELY OF THEIR WIDTHS AT LONGITUDINALLY SPACED APART UNIFORM INTERVALS WHILE LEAVING THE AFORESAID CORRESPONDING EDGE OF THE OTHER WEB FREE AND UNSEALED EXCEPT AT SAID TRANSVERSE SEALS THEREBY DEFINING WITH SAID STRIP A FILLING OPENING, AND SUBSEQUENTLY SEVERING THE WEBS TRANSVERSELY ALONG THE MIDDLE OF EACH TRANSVERSE SEAL SUCCESSIVELY TO SEPARATE THE COMPLETED PACKAGES.
References Cited (Backward Citations)
US3125006A
Cited
US2087444A
Cited
US2237327A
Cited
US2790591A
Cited
US2866392A
Cited
US2873566A
Cited
US3147674A
Cited
US3113715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |