Patent US2839441A successfully refreshed from Google Patents.
US2839441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of welding together two plastic objects
Assignee: AT&T Inc
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Filing: 1955-09-08
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Granted: 1958-06-17
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Expires: 1975-09-08
Abstract
No abstract record available.
Inventors
- 👤 Robert J Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:44
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5344; B29C65/00; B29C65/02; B29C65/10; B29C65/103; B29C65/12; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/50; B29C65/5042; B29C65/505; B29C66/001; B29C66/0012; B29C66/0014; B29C66/00141; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/61; B29C66/612; B29C66/80; B29C66/83; B29C66/836; B29C66/12; B29C66/122; B29C66/1224; B29C66/1226; B29C66/70; B29C66/71; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064; Y10T156/1066; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF WELDING TWO PLASTIC OBJECTS TOGETHER WHICH COMPRISES BEVELING THE ABUTTING EDGES OF SAID OBJECTS TO FORM A V-SHAPED GROOVE, APPLYING A PLATIC ROD IN SAID GROOVE, SIMULTANEOUSLY HEATING SAID ROD AND THE SURFACES OF SAID GROOVE TO PRODUCE A FIRST WELD SUBSTANTIALLY FILLING SAID V-SHAPED GROOVE, CUTTING A BROADER SEMI-OVAL GROOVE CENTERED ABOUT THE CENTER LINE OF SAID V-SHAPED GROOVE TO A DEPTH INCLUDING A SUBSTANTIAL PORTION OF THE SAID FIRST WELD, APPLYING A PLASTIC SEMI-OVAL ROD SUBSTANTIALLY CONFORMING WITH SAID SEMI-OVAL GROOVE IN SAID SEMI-OVAL GROOVE AND SIMULTANEOUSLY HEATING SAID ROD AND THE SURFACES OF SAID SEMI-OVAL GROOVE TO PRODUCE A SECOND WELD SUBSTANTIALLY FILLING SAID SEMI-OVAL GROOVE WHEREBY A STRONG, TIGHT DOUBLE WELD BETWEEN SAID TWO PLASTIC OBJECTS IS OBTAINED.
Claim 2
Independent Claim
125 words
THE METHOD OF WELDING TWO PLASTIC OBJECTS TOGETHER WHICH COMPRISES BEVELING THE ABUTTING EDGES OF SAID OBJECTS TO FORM A V-SHAPED GROOVE, APPLYING A PLATIC ROD IN SAID GROOVE, SIMULTANEOUSLY HEATING SAID ROD AND THE SURFACES OF SAID GROOVE TO PRODUCE A FIRST WELD SUBSTANTIALLY FILLING SAID V-SHAPED GROOVE, CUTTING A BROADER SEMI-OVAL GROOVE CENTERED ABOUT THE CENTER LINE OF SAID V-SHAPED GROOVE TO A DEPTH INCLUDING A SUBSTANTIAL PORTION OF THE SAID FIRST WELD, APPLYING A PLASTIC SEMI-OVAL ROD SUBSTANTIALLY CONFORMING WITH SAID SEMI-OVAL GROOVE IN SAID SEMI-OVAL GROOVE AND SIMULTANEOUSLY HEATING SAID ROD AND THE SURFACES OF SAID SEMI-OVAL GROOVE TO PRODUCE A SECOND WELD SUBSTANTIALLY FILLING SAID SEMI-OVAL GROOVE WHEREBY A STRONG, TIGHT DOUBLE WELD BETWEEN SAID TWO PLASTIC OBJECTS IS OBTAINED.
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |