US3204078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-hydraulic control for flash welders
Assignee: Taylor Winfield Corp
•
Filing: 1960-06-27
•
Granted: 1965-08-31
•
Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Daniel A Cavanagh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:19
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/04; B23K11/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN FLASH WELDING APPARATUS COMPRISING A PAIR OF WELDING PLATENS ADAPTED TO RECEIVE AND HOLD WORKPIECES AND MEANS TO EFFECT RELATIVE MOVEMENT BETWEEN SAID PLATENS; THE IMPROVEMENT COMPRISING MEANS TO GENERATE A FIRST SIGNAL CORRESPONDING TO THE DESIRED INSTANTANEOUS RELATIVE SPACING BETWEEN SAID WELDING PLATENS OVER A PREDETERMINED TIME-POSITION PATTERN, MEANS TO GENERATE A SECOND SIGNAL CORRESPONDING TO THE ACTUAL INSTANTANEOUS RELATIVE SPACING BETWEEN SAID WELDING PLATENS, MEANS TO COMPARE SAID SIGNALS TO AN OUTPUT CONTROL SIGNAL, AND SAID OUTPUT CONTROL SIGNAL ACTUATING SAID MEANS TO EFFECT RELATIVE MOVEMENT.
Claim 2
Dependent Claim
89 words
IN FLASH WELDING APPARATUS COMPRISING A PAIR OF WELDING PLATENS ADAPTED TO RECEIVE AND HOLD WORKPIECES AND MEANS TO EFFECT RELATIVE MOVEMENT BETWEEN SAID PLATENS; THE IMPROVEMENT COMPRISING MEANS TO GENERATE A FIRST SIGNAL CORRESPONDING TO THE DESIRED INSTANTANEOUS RELATIVE SPACING BETWEEN SAID WELDING PLATENS OVER A PREDETERMINED TIME-POSITION PATTERN, MEANS TO GENERATE A SECOND SIGNAL CORRESPONDING TO THE ACTUAL INSTANTANEOUS RELATIVE SPACING BETWEEN SAID WELDING PLATENS, MEANS TO COMPARE SAID SIGNALS TO AN OUTPUT CONTROL SIGNAL, AND SAID OUTPUT CONTROL SIGNAL ACTUATING SAID MEANS TO EFFECT RELATIVE MOVEMENT.
References Cited (Backward Citations)
US2727969A
Cited
US2875389A
Cited
US2860231A
Cited
US2829233A
Cited
US2848595A
Cited
US2963647A
Cited
US2939065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |