Patent US3610025A successfully refreshed from Google Patents.
US3610025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube leak detector
Assignee: Sulzer AG
•
Filing: 1969-03-12
•
Granted: 1971-10-05
•
Expires: 1989-03-12
Abstract
Abstract THE TUBE LEAK DETECOTOR SYSTEM COMPARES THE VALUES OF AN OPERATING VARIABLE OF THE WORKING MEDIUM, SUCH AS PRESSURE OR TEMPERATURE, AT CORRESPONDING POINTS IN THE PARALLEL FLOW PATHS TO DETERMINE THE EXISTENCE OF DIFFERENCES IN THE VALUES WHICH WOULD INDICATE A LEAK IN A FLOW PATH. THE DIFFERENCE IS USED TO ACTIVATE AN INDICATING INSTRUMENT TO SIGNAL THE PRESENCE OF A LEAK.
Inventors
- 👤 Alfred Brunner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:06
CPC Classifications
F; F22; F22B; F22B35/00; F22B35/06; F22B35/10; F22B37/00; F22B37/02; F22B37/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |