Patent FR377374A successfully refreshed from Google Patents.
Patent US1669022A successfully refreshed from Google Patents.
Patent US3289526A successfully refreshed from Google Patents.
US3289526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of simulating thermal stresses and producing the resulting photoelastic fringe patterns
Assignee: Combustion Engineering Inc
•
Filing: 1963-01-28
•
Granted: 1966-12-06
•
Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Tuppeny
- 👤 Sigmund J Ligenza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:52
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/16; G01B11/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE METHOD OF PRODUCING A PHOTOELASTIC FRINGE PATTERN FROM WHICH THE STRESS CONDITION OF A COMPONENT OF A PROTOTYPE HAVING ONE REGION THAT OPERATES AT A MUCH HIGHER TEMPERATURE THAN AN ADJACENT REGION CAN BE PREDICTED COMPRISING PROVIDING A PHOTOELASTIC SCALE MODEL OF THE COMPONENT, SURROUNDING THE REGION THEREOF CORRESPONDING TO SAID ONE REGION WITH A FIRST FLUID, SURROUNDING THE REGION THEREOF CORRESPONDING TO SAID ADJACENT REGION WITH SECOND FLUID MAINTAINED AT A MUCH LOWER TEMPERATURE THAN SAID ONE TEMPERATURE, WHILE IN THIS CONDITION PLACING THE MODEL BETWEEN THE ELEMENTS OF A POLARISCOPE.
Claim 2
Independent Claim
93 words
THE METHOD OF PRODUCING A PHOTOELASTIC FRINGE PATTERN FROM WHICH THE STRESS CONDITION OF A COMPONENT OF A PROTOTYPE HAVING ONE REGION THAT OPERATES AT A MUCH HIGHER TEMPERATURE THAN AN ADJACENT REGION CAN BE PREDICTED COMPRISING PROVIDING A PHOTOELASTIC SCALE MODEL OF THE COMPONENT, SURROUNDING THE REGION THEREOF CORRESPONDING TO SAID ONE REGION WITH A FIRST FLUID, SURROUNDING THE REGION THEREOF CORRESPONDING TO SAID ADJACENT REGION WITH SECOND FLUID MAINTAINED AT A MUCH LOWER TEMPERATURE THAN SAID ONE TEMPERATURE, WHILE IN THIS CONDITION PLACING THE MODEL BETWEEN THE ELEMENTS OF A POLARISCOPE.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |