Patent US2729578A successfully refreshed from Google Patents.
US2729578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding apparatus and method
Assignee: Eaton Corp
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Filing: 1952-07-16
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Granted: 1956-01-03
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Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 Hedlund Oscar
- 👤 Jr Joseph Arthur Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:43
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/0026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE METHOD OF APPLYING WELD MATERIAL TO A DESIRED AREA OF AN ENGINE VALVE OR LIKE ARTICLE WHICH COMPRISES, SUPPORTING THE ARTICLE ADJACENT A STATIONARY WELDING HEAD FOR SIMULTANEOUS ROTARY AND TRAVERSING MOVEMENTS WITH THE TRAVERSING MOVEMENT BEING SUBSTANTIALLY IN A DIRECTION TRANSVERSE TO SAID WELDING HEAD, OPERATING SAID WELDING HEAD TO PRODUCE A WELD FORMATION ON THE ARTICLE AT AN INITIAL WELD POINT OF SAID DESIRED AREA, SIMULTANEOUSLY IMPARTING ROTARY AND TRAVERSING MOVEMENTS TO SAID ARTICLE SUCH THAT THE POINT OF WELD FORMATION MOVES SPIRALLY OVER SAID DESIRED AREA ALONG CONVOLUTIONS LYING AT DIFFERENT RADIAL DISTANCES FROM SAID INITIAL WELD POINT, AND PROGRESSIVELY VARYING THE RATES OF SPEED OF SAID ROTARY AND TRAVERSING MOVEMENTS SUCH THAT THE ADJACENT CONVOLUTIONS OF THE THE WORKPIECE AND AGGREGATE THE ENTIRE DESIRED AREA.
Claim 2
Independent Claim
130 words
THE METHOD OF APPLYING WELD MATERIAL TO A DESIRED AREA OF AN ENGINE VALVE OR LIKE ARTICLE WHICH COMPRISES, SUPPORTING THE ARTICLE ADJACENT A STATIONARY WELDING HEAD FOR SIMULTANEOUS ROTARY AND TRAVERSING MOVEMENTS WITH THE TRAVERSING MOVEMENT BEING SUBSTANTIALLY IN A DIRECTION TRANSVERSE TO SAID WELDING HEAD, OPERATING SAID WELDING HEAD TO PRODUCE A WELD FORMATION ON THE ARTICLE AT AN INITIAL WELD POINT OF SAID DESIRED AREA, SIMULTANEOUSLY IMPARTING ROTARY AND TRAVERSING MOVEMENTS TO SAID ARTICLE SUCH THAT THE POINT OF WELD FORMATION MOVES SPIRALLY OVER SAID DESIRED AREA ALONG CONVOLUTIONS LYING AT DIFFERENT RADIAL DISTANCES FROM SAID INITIAL WELD POINT, AND PROGRESSIVELY VARYING THE RATES OF SPEED OF SAID ROTARY AND TRAVERSING MOVEMENTS SUCH THAT THE ADJACENT CONVOLUTIONS OF THE THE WORKPIECE AND AGGREGATE THE ENTIRE DESIRED AREA.
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |