US3195285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming transverse heat seals on tubular thermoplastic material, and apparaus therefor
Assignee: Hamac Hansella AG
•
Filing: 1962-07-13
•
Granted: 1965-07-20
•
Expires: 1982-07-13
Abstract
No abstract record available.
Inventors
- 👤 Toss Franco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:20
CPC Classifications
B; B65; B65B; B65B61/00; B65B61/04; B65B61/06; B65B61/10; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/226; B29C65/74; B29C65/743; B29C65/745; B29C65/7451; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/70; B29C66/73; B29C66/737; B29C66/7371; B29C66/73715; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/81417; B29C66/83; B29C66/832; B29C66/8322; B29C66/83221; B29C66/84; B29C66/849; B65B51/00; B65B51/10; B65B51/26; B65B51/30; B65B51/303; B29C66/812; B29C66/8126; B29C66/81264; B29C66/818; B29C66/8187; B29C66/81871; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91421; B29C66/91431; B29C66/9161; B29C66/91641; B29L; B29L2031/00; B29L2031/712; B29L2031/7128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF FORMING TRANSVERSE HEAT SEALS ON A TUBE OF HEAT SEALABLE PACKAGING MATERIAL IN ORDER TO PRODUCE A SERIES OF INDIVIDUAL SEALED PACKAGES, COMPRISING THE FOLLOWING STEPS: CLAMPING THE TUBE ONLY ALONG TWO SPACED AREAS AND LEAVING IT UNCONTACTED IN THE REGION BETWEEN THEM, THEREBY FLATTENING THE TUBE INTO A COMPLETELY UNCONFINED TWO-PLY CONDITION IN SAID REGION, SEVERING THE FLATTENED REGION TO FREE THE SEVERED PARTS OF ALL CONSTRAINT, IMMEDIATELY THEREAFTER, FUSING TOGETHER THE TWO PILES OF EACH OF SAID PARTS, PERMITTING THE FUSED AREAS TO COOL IN SAID UNRESTRAINED CONDITION WHEREBY THEY ARE FREE TO SHRINK AND THICKEN AS THEY COOL, AND UNCLAMPING THE TUBE AFTER SAID FUSED AREAS HAVE COOLED SUFFICIENTLY TO BE SELF-SUSTAINING.
Claim 2
Independent Claim
118 words
A METHOD OF FORMING TRANSVERSE HEAT SEALS ON A TUBE OF HEAT SEALABLE PACKAGING MATERIAL IN ORDER TO PRODUCE A SERIES OF INDIVIDUAL SEALED PACKAGES, COMPRISING THE FOLLOWING STEPS: CLAMPING THE TUBE ONLY ALONG TWO SPACED AREAS AND LEAVING IT UNCONTACTED IN THE REGION BETWEEN THEM, THEREBY FLATTENING THE TUBE INTO A COMPLETELY UNCONFINED TWO-PLY CONDITION IN SAID REGION, SEVERING THE FLATTENED REGION TO FREE THE SEVERED PARTS OF ALL CONSTRAINT, IMMEDIATELY THEREAFTER, FUSING TOGETHER THE TWO PILES OF EACH OF SAID PARTS, PERMITTING THE FUSED AREAS TO COOL IN SAID UNRESTRAINED CONDITION WHEREBY THEY ARE FREE TO SHRINK AND THICKEN AS THEY COOL, AND UNCLAMPING THE TUBE AFTER SAID FUSED AREAS HAVE COOLED SUFFICIENTLY TO BE SELF-SUSTAINING.
References Cited (Backward Citations)
US2618814A
Cited
US3001348A
Cited
US2961031A
Cited
US3055154A
Cited
US3008278A
Cited
US3045403A
Cited
US3061989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |