Patent US3240648A successfully refreshed from Google Patents.
US3240648A
Expired / Lapsed
US
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Method of and apparatus for joining plastic materials
Assignee: Macoid Industries Inc
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Filing: 1962-08-20
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Granted: 1966-03-15
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Expires: 1982-08-20
Abstract
No abstract record available.
Inventors
- 👤 Stephen D Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:51
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/26; B29C65/20; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/40; B29C66/41; B29C66/43; B29C66/50; B29C66/51; B29C66/52; B29C66/524; B29C66/5241; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91231; B29C66/914; B29C66/9141; B29C66/91421; B29C66/91431; B29C66/919; B29C66/9192; B29C66/91921; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29L; B29L2023/00; B29L2023/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
IN A METHOD OF WELDING TOGETHER PARTS MADE OF VINYL POLYMERS AND COPOLYMERS HAVING SOFTENING POINTS IN THE RANGE OF ABOUT 350-400*F., THE STEPS OF PROVIDING A BODY OF METAL HAVING A CRYSTALLIZATION POINT IN THE RANGE FROM ABOUT 350-400*F., HEATING THE BODY OF METAL ABOVE ITS MELTING POINT TO RENDER IT MOLTEN, COOLING SAID MOLTEN BODY TO ITS CYSTALLIZATION POINT, WHILE OBSERVING THE BODY TO BE PARTIALLY MOLTEN AND PARTIALLY CRYSTALLIZED DIRECTLY EXPOSING THE PORTIONS OF THE PARTS TO BE WELDED TO THE HEAT TRANSFER INFLUENCE OF THE METAL BODY AT ITS CYSTALLIZATION POINT TO SOFTEN SAID PARTS, PRESSING SAID SOFTENED PORTIONS TOGETHER IN WELDING CONTACT, AND COOLING SAID PARTS WHILE IN WELDING CONTACT TO COMPLETE THE WELD.
Claim 2
Dependent Claim
119 words
IN A METHOD OF WELDING TOGETHER PARTS MADE OF VINYL POLYMERS AND COPOLYMERS HAVING SOFTENING POINTS IN THE RANGE OF ABOUT 350-400*F., THE STEPS OF PROVIDING A BODY OF METAL HAVING A CRYSTALLIZATION POINT IN THE RANGE FROM ABOUT 350-400*F., HEATING THE BODY OF METAL ABOVE ITS MELTING POINT TO RENDER IT MOLTEN, COOLING SAID MOLTEN BODY TO ITS CYSTALLIZATION POINT, WHILE OBSERVING THE BODY TO BE PARTIALLY MOLTEN AND PARTIALLY CRYSTALLIZED DIRECTLY EXPOSING THE PORTIONS OF THE PARTS TO BE WELDED TO THE HEAT TRANSFER INFLUENCE OF THE METAL BODY AT ITS CYSTALLIZATION POINT TO SOFTEN SAID PARTS, PRESSING SAID SOFTENED PORTIONS TOGETHER IN WELDING CONTACT, AND COOLING SAID PARTS WHILE IN WELDING CONTACT TO COMPLETE THE WELD.
Claim 3
Dependent Claim
126 words
IN APPARATUS FOR JOINING TOGETHER PARTS MADE FROM THERMOPLASTIC MATERIALS HAVING SOFTENING POINTS IN THE RANGE FROM 350-400*F., A FLUID-RETAILING CONTAINER MADE OF STEEL, A HEATING PLATEN POSITIONED IN SAID CONTAINER FOR HEATING SAID PARTS OF THERMOPLASTIC MATERIAL, SAID HEATING PLATEN HAVING A HORIZONTALLY DISPOSED HEATING SURFACE, A BODY OF FUSIBLE ALLOY IN SAID CONTAINER IN SURROUNDING CONTACTING RELATION TO SAID PLATEN, SAID ALLOY HAVING A CRYSTALLIZATION TEMPERATURE IN THE RANGE FROM 350-400* F., SAID CONTAINER HAVING AN APERTURE FOR OBSERVATION OF THE CRYSTALLINE AND MOLTEN STATE OF SAID ALLOY, AND MEANS FOR HEATING SAID BODY OF FUSIBLE ALLOY ABOVE ITS MELTING POINT WHEREBY WHEN SAID ALLOY COOLS TO ITS CRYSTALLIZATION POINT IT IS EFFECTIVE TO HEAT SAID HEATING PLATEN AND THE HORIZONTALLY DISPOSED SURFACE THEREOF.
Claim 4
Dependent Claim
126 words
IN APPARATUS FOR JOINING TOGETHER PARTS MADE FROM THERMOPLASTIC MATERIALS HAVING SOFTENING POINTS IN THE RANGE FROM 350-400*F., A FLUID-RETAILING CONTAINER MADE OF STEEL, A HEATING PLATEN POSITIONED IN SAID CONTAINER FOR HEATING SAID PARTS OF THERMOPLASTIC MATERIAL, SAID HEATING PLATEN HAVING A HORIZONTALLY DISPOSED HEATING SURFACE, A BODY OF FUSIBLE ALLOY IN SAID CONTAINER IN SURROUNDING CONTACTING RELATION TO SAID PLATEN, SAID ALLOY HAVING A CRYSTALLIZATION TEMPERATURE IN THE RANGE FROM 350-400* F., SAID CONTAINER HAVING AN APERTURE FOR OBSERVATION OF THE CRYSTALLINE AND MOLTEN STATE OF SAID ALLOY, AND MEANS FOR HEATING SAID BODY OF FUSIBLE ALLOY ABOVE ITS MELTING POINT WHEREBY WHEN SAID ALLOY COOLS TO ITS CRYSTALLIZATION POINT IT IS EFFECTIVE TO HEAT SAID HEATING PLATEN AND THE HORIZONTALLY DISPOSED SURFACE THEREOF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |