US3219250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible back-up bar
Assignee: Individual
•
Filing: 1964-02-26
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Granted: 1965-11-23
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Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 Aubrey S Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:05
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A BACKING ELEMENT FOR USE IN WELDING OPERATIONS, COMPRISING: (A) AN ELASTOMERIC RIBBON MEMBER; (B) A PLURALITY OF PLATES; (C) EACH SAID PLATE HAVING A VERY THIN WIDTH AS COMPARED WITH ITS HEIGHT AND LENGTH SO AS TO FORM TWO MAJOR FACE SURFACES; (D) SAID PLATES BEING ARRANGED IN A FACE-TO-FACE RELATTIONSHIP AND FORMING WITH THEIR OUTER ORIENTATED EDGES A BACK-UP CONTACT SURFACE ADAPTED TO BE PRESSED AGAINST BODY STRUCTURES AT OPPOSITE SIDES OF A JOINT TO BE WELDED; AND (E) EACH SAID PLATE HAVING ITS INNER ORIENTATED EDGE DOVETAILED TRANSVERSELY WITHIN THE OUTER ORIENTATED SURFACE OF SAID ELASTOMERIC MEMBER WHERE BY SAID PLATES MAY MOVE RELATIVE TO EACH OTHER TO READILY CONFORM TO AWKWARD SHAPED WORKPIECE SURFACES.
Claim 2
Dependent Claim
118 words
A BACKING ELEMENT FOR USE IN WELDING OPERATIONS, COMPRISING: (A) AN ELASTOMERIC RIBBON MEMBER; (B) A PLURALITY OF PLATES; (C) EACH SAID PLATE HAVING A VERY THIN WIDTH AS COMPARED WITH ITS HEIGHT AND LENGTH SO AS TO FORM TWO MAJOR FACE SURFACES; (D) SAID PLATES BEING ARRANGED IN A FACE-TO-FACE RELATTIONSHIP AND FORMING WITH THEIR OUTER ORIENTATED EDGES A BACK-UP CONTACT SURFACE ADAPTED TO BE PRESSED AGAINST BODY STRUCTURES AT OPPOSITE SIDES OF A JOINT TO BE WELDED; AND (E) EACH SAID PLATE HAVING ITS INNER ORIENTATED EDGE DOVETAILED TRANSVERSELY WITHIN THE OUTER ORIENTATED SURFACE OF SAID ELASTOMERIC MEMBER WHERE BY SAID PLATES MAY MOVE RELATIVE TO EACH OTHER TO READILY CONFORM TO AWKWARD SHAPED WORKPIECE SURFACES.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |