Patent US6340369B1 successfully refreshed from Google Patents.
US2812409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric strain gauges
Assignee: Acordis UK Ltd
•
Filing: 1952-11-13
•
Granted: 1957-11-05
•
Expires: 1972-11-13
Abstract
No abstract record available.
Inventors
- 👤 Jones Horace
- 👤 Wylde Joseph Rowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:41
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2287
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A STRAIN GAUGE IN THE FORM OF A WOVEN RIBBON HAVING A WEFT CONSISTING OF A RESISTANCE WIRE OF A DIAMETER OF AT MOST 0.00032" REINFORCED BY A BRAIDED COVERING THEREFOR OF GLASS-FIBRE YARN PASSED HELICALLY AROUND SAID WIRE, AND HAVING A WARP CONSISTING OF GLASS-FIRE YARNS, SAID GAUGE CONSISTING WHOLY OF WIRE AND OTHER HEAT-REFRACTORY MATERIALS RESISTANT TO A TEMPERATURE OF AT LEAST 400*C.
Claim 2
Dependent Claim
65 words
A STRAIN GAUGE IN THE FORM OF A WOVEN RIBBON HAVING A WEFT CONSISTING OF A RESISTANCE WIRE OF A DIAMETER OF AT MOST 0.00032" REINFORCED BY A BRAIDED COVERING THEREFOR OF GLASS-FIBRE YARN PASSED HELICALLY AROUND SAID WIRE, AND HAVING A WARP CONSISTING OF GLASS-FIRE YARNS, SAID GAUGE CONSISTING WHOLY OF WIRE AND OTHER HEAT-REFRACTORY MATERIALS RESISTANT TO A TEMPERATURE OF AT LEAST 400*C.
References Cited (Backward Citations)
US2292549A
Cited
US2511540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |