US3276941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for butt-welding thermoplastic members and product
Assignee: Shell USA Inc
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Filing: 1963-10-23
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Granted: 1966-10-04
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 William C Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:20
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/302; B29C66/3022; B29C66/30223; B29C66/32; B29C66/322; B29C66/40; B29C66/41; B29C66/43; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/54; B29C66/547; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/432; B29C66/71; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29K; B29K2023/00; B29K2023/10; B29K2023/12; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/195
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A THERMOPLASTIC MEMBER HAVING AN EDGE OF THEREINAFTER DEFINED SHAPED AND OF SUFFICIENT THICKNESS TO BE BUTTWELDED TO ANOTHER THERMOPLASTIC MEMBER HAVING AN EDGE OF CORRESPONDING SHAPE TO FORM A JOINT WHICH SHOWS NO BEAD ON AT LEAST ONE SIDE, THE EDGES OF SAID MEMBERS WHICH ARE ADAPTED TO BE THUS WELDING HAVING, (1) AT EACH SIDE WHICH NO BEAD IS TO FORMED, A NEARROW SHOULDER, (2) A RECESS, IMMEDIATELY ADJACENT SAID SHOULDER, SAID RECESS BEING ADAPTED TO RECEIVER MOLTEN PLASTIC DURING THE WELDING OPERATION, AND (3) IMMEDIATELY ADJACENT SAID RECESS AND WITHIN THE SPACE DEFINED BY PROJECTING SAID EDGE, A PROTRUSION EXTENDING IN SAID SPACE BEYOND SAID SHOULDER, SAID PROTRUSION BEING ADAPTED TO BE MELTED AND COMPLETELY DISPLACED INTO SAID RECESS OR RECESSES DURING SAID WELDING OPERATION.
Claim 2
Dependent Claim
128 words
A THERMOPLASTIC MEMBER HAVING AN EDGE OF THEREINAFTER DEFINED SHAPED AND OF SUFFICIENT THICKNESS TO BE BUTTWELDED TO ANOTHER THERMOPLASTIC MEMBER HAVING AN EDGE OF CORRESPONDING SHAPE TO FORM A JOINT WHICH SHOWS NO BEAD ON AT LEAST ONE SIDE, THE EDGES OF SAID MEMBERS WHICH ARE ADAPTED TO BE THUS WELDING HAVING, (1) AT EACH SIDE WHICH NO BEAD IS TO FORMED, A NEARROW SHOULDER, (2) A RECESS, IMMEDIATELY ADJACENT SAID SHOULDER, SAID RECESS BEING ADAPTED TO RECEIVER MOLTEN PLASTIC DURING THE WELDING OPERATION, AND (3) IMMEDIATELY ADJACENT SAID RECESS AND WITHIN THE SPACE DEFINED BY PROJECTING SAID EDGE, A PROTRUSION EXTENDING IN SAID SPACE BEYOND SAID SHOULDER, SAID PROTRUSION BEING ADAPTED TO BE MELTED AND COMPLETELY DISPLACED INTO SAID RECESS OR RECESSES DURING SAID WELDING OPERATION.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |