US3293908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelastic machine
Assignee: Individual
•
Filing: 1964-08-21
•
Granted: 1966-12-27
•
Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Chapman Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:29
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/16; G01B11/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A PHOTOELASTIC MACHINE COMPRISING: A PLATFORM; MECHANISM ADJACENT SAID PLATFORM ROTATABLY MOUNTING A POLARIZER; MECHANISM ADJACENT SAID PLATFORM ROTATABLY MOUNTING AN ANALYZER, SAID MECHANISMS PYSICALLY SEPARATING THE POLARIZER AND ANALYZER TO PROVIDE AN ACCESS SPACE BETWEEN THE SAME AND ABOVE SAID PLATFORM; A SCANNING FRAME FOR SUPPORTING A SPECIMEN, THE FRAME BEING DISPOSED IN SAID ACCESS SPACE AND MOUNTED FOR RECIPROCATING MOVEMENT OF SAID PLATFORM; A SOURCE OF LIGHT; AN IMAGE VIEWING STATION ADJACENT SAID PLATFORM; MEANS TO PROJECT LIGHT FROM SAID SOURCE TO SAID IMAGE VIEWING STATION INCLUDING MECHANISM PROJECTING THE LIGHT ALONG THE AXIS THROUGH SAID POLARIZER AND ANALYZER AND THENCE TO A FOCUSING LENS AND TO A MIRROR ADJACENT SAID VIEWING STATION, THE MIRROR BEING ORIENTED TO REFLECT THE LIGHT TO THE VIEWING STATION AT AND ANGLE WHICH IS ACUTE TO SAID AXIS IN A DIRECTION TOWARD SAID PLATFORM; AND OPAQUE HOUSING MEANS SUPPORTING AND SURROUNDING SAID FOCUSING LENS, SAID MIRROR AND SAID VIEWING STATION, THE HOUSING MEANS BEING FOR USE IN BLOCKING INCIDENT LIGHT WHEN THE VIEWING STATION IS PROVIDED WITH MEANS CARRYING A PHOTOGRAPHIC EMULSION.
Claim 2
Dependent Claim
180 words
A PHOTOELASTIC MACHINE COMPRISING: A PLATFORM; MECHANISM ADJACENT SAID PLATFORM ROTATABLY MOUNTING A POLARIZER; MECHANISM ADJACENT SAID PLATFORM ROTATABLY MOUNTING AN ANALYZER, SAID MECHANISMS PYSICALLY SEPARATING THE POLARIZER AND ANALYZER TO PROVIDE AN ACCESS SPACE BETWEEN THE SAME AND ABOVE SAID PLATFORM; A SCANNING FRAME FOR SUPPORTING A SPECIMEN, THE FRAME BEING DISPOSED IN SAID ACCESS SPACE AND MOUNTED FOR RECIPROCATING MOVEMENT OF SAID PLATFORM; A SOURCE OF LIGHT; AN IMAGE VIEWING STATION ADJACENT SAID PLATFORM; MEANS TO PROJECT LIGHT FROM SAID SOURCE TO SAID IMAGE VIEWING STATION INCLUDING MECHANISM PROJECTING THE LIGHT ALONG THE AXIS THROUGH SAID POLARIZER AND ANALYZER AND THENCE TO A FOCUSING LENS AND TO A MIRROR ADJACENT SAID VIEWING STATION, THE MIRROR BEING ORIENTED TO REFLECT THE LIGHT TO THE VIEWING STATION AT AND ANGLE WHICH IS ACUTE TO SAID AXIS IN A DIRECTION TOWARD SAID PLATFORM; AND OPAQUE HOUSING MEANS SUPPORTING AND SURROUNDING SAID FOCUSING LENS, SAID MIRROR AND SAID VIEWING STATION, THE HOUSING MEANS BEING FOR USE IN BLOCKING INCIDENT LIGHT WHEN THE VIEWING STATION IS PROVIDED WITH MEANS CARRYING A PHOTOGRAPHIC EMULSION.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |