Patent US3184358A successfully refreshed from Google Patents.
US3184358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming laminated plastic tubing
Assignee: Multifol Patentverwertungs AG
•
Filing: 1961-06-20
•
Granted: 1965-05-18
•
Expires: 1981-06-20
Abstract
No abstract record available.
Inventors
- 👤 Utz Kastulus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:16
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/02; B29C48/00; B29C48/001; B29C48/0013; B29C48/0015; B29C48/16; B29C48/18; B29C48/21; B29C59/00; B29C59/10; B29C59/103; B29C59/12; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/45; B29C66/49; B29C66/492; B32; B32B; B32B27/00; B29C49/00; B29C49/42; B29C49/46; B29C2049/4602; B29C2049/4611; B29C2049/4617; B29C2049/4623; B29C48/03; B29C48/09; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/70; B29C66/71; B29K; B29K2023/00; B29K2023/04; B29K2023/06; Y; Y10; Y10S; Y10S174/00; Y10S174/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD OF PRODUCING LAMINATED TUBING, COMPRISING EXTRUDING AT LEAST TWO TUBULAR FORMATIONS OF DIFFERENT THERMOPLASTIC MATERIALS DIFFCULTLY SUSCEPTEBLE TO BONDING, COAXIALLY AND SPACEDLY ISSUING SAID FORMATION, SAID FORMTIONS FORMING AN OUTER AND AN INNER FORMATION AND CONSTITUTING THE LAYERS OF THE LAMINATED TUBING BEING PRODUCED, SAID OUTER FORMATION ENCLOSING SAID INNER FORMATION AND HAVING AN INNER FACE, SAID INNER FORMATION HAVING AN OUTER FACE, ADMITTING A FLUID PRESSURE MEDIUM INTO THE INTERIOR OF SAID INNER FORMATION AND THUS EXPANDING SAME TO FUSE TOGETHER WITH SAID OUTER FORMATION APPROXIMATELY ALONG A CIRCLE A DISTANCE AWAY FROM THE PLACE OF ISSUANCE OF BOTH OF SAID FORMATIONS, PORTIONS OF SAID INNER AND OUTER FACES DEFINING A TEMPORARY SPACE OF ANNULAR CROSS SECTION, INTRODUCING A GAS INTO SAID SPACE, CAPABLE OF REACTING WITH AT LEAST ONE OF SAID PORTIONS, REACTING SAID GAS WITH AT LEAST SAID ONE PORTION, AND BONDING TOGETHER SAID PORTIONS WITH THE AID OF SAID FLUID PRESSURE MEDIUM.
Claim 2
Independent Claim
158 words
A METHOD OF PRODUCING LAMINATED TUBING, COMPRISING EXTRUDING AT LEAST TWO TUBULAR FORMATIONS OF DIFFERENT THERMOPLASTIC MATERIALS DIFFCULTLY SUSCEPTEBLE TO BONDING, COAXIALLY AND SPACEDLY ISSUING SAID FORMATION, SAID FORMTIONS FORMING AN OUTER AND AN INNER FORMATION AND CONSTITUTING THE LAYERS OF THE LAMINATED TUBING BEING PRODUCED, SAID OUTER FORMATION ENCLOSING SAID INNER FORMATION AND HAVING AN INNER FACE, SAID INNER FORMATION HAVING AN OUTER FACE, ADMITTING A FLUID PRESSURE MEDIUM INTO THE INTERIOR OF SAID INNER FORMATION AND THUS EXPANDING SAME TO FUSE TOGETHER WITH SAID OUTER FORMATION APPROXIMATELY ALONG A CIRCLE A DISTANCE AWAY FROM THE PLACE OF ISSUANCE OF BOTH OF SAID FORMATIONS, PORTIONS OF SAID INNER AND OUTER FACES DEFINING A TEMPORARY SPACE OF ANNULAR CROSS SECTION, INTRODUCING A GAS INTO SAID SPACE, CAPABLE OF REACTING WITH AT LEAST ONE OF SAID PORTIONS, REACTING SAID GAS WITH AT LEAST SAID ONE PORTION, AND BONDING TOGETHER SAID PORTIONS WITH THE AID OF SAID FLUID PRESSURE MEDIUM.
References Cited (Backward Citations)
CA556576A
Cited
US2695422A
Cited
US2753596A
Cited
DE1028325B
Cited
US2979431A
Cited
US3008862A
Cited
US2957701A
Cited
US3082484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |