US3368081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic trackside car door position recorder
Assignee: Pickands Mather and Co
•
Filing: 1965-04-30
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Granted: 1968-02-06
•
Expires: 1985-04-30
Abstract
No abstract record available.
Inventors
- 👤 Paul F Giesking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:01
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16; B61D7/24; B61D7/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A SYSTEM FOR RECORDING DATA RELATIVE TO THE POSITION OF DUMP DOORS ON GONDOLA CARS WHEREIN SAID CAR DOORS ARE PIVOTALLY MOUNTED AND WHEREIN MEANS ARE PROVIDED FOR ACTUATING THE DOORS BETWEEN THEIR OPEN AND CLOSED POSITIONS, THE COMBINATION COMPRISING A TRACKSIDE LOCATED OPTICAL SCANNING AND RECORDING DEVICE PRODUCING A SCANNING BEAM HAVING A DIRECTION NORMAL TO THE TRACK, MEANS ESTABLISHING A VIEWING APERTURE AT THE SIDE OF SAID CAR FOR PASSING SAID SCANNING BEAM THERETHROUGH, AND A TARGET LOCATED ON THE SIDE OF SAID APERTURE AWAY FROM SAID SCANNING AND RECORDING DEVICE FOR REFLECTING SAID SCANNING BEAM TO SAID RECORDING DEVICE, SAID TARGET BEING MOVED BY SAID DOOR ACTUATING MEANS INTO A POSITION IN ALIGNMENT WITH SAID APERTURE AND REFLECTING SAID SCANNING BEAM WHEN SAID DOORS ARE CLOSED AND INTO ANOTHER POSITION OUT OF ALIGNMENT WITH SAID APERTURE WHEN SAID DOORS ARE OPEN.
Claim 2
Dependent Claim
145 words
IN A SYSTEM FOR RECORDING DATA RELATIVE TO THE POSITION OF DUMP DOORS ON GONDOLA CARS WHEREIN SAID CAR DOORS ARE PIVOTALLY MOUNTED AND WHEREIN MEANS ARE PROVIDED FOR ACTUATING THE DOORS BETWEEN THEIR OPEN AND CLOSED POSITIONS, THE COMBINATION COMPRISING A TRACKSIDE LOCATED OPTICAL SCANNING AND RECORDING DEVICE PRODUCING A SCANNING BEAM HAVING A DIRECTION NORMAL TO THE TRACK, MEANS ESTABLISHING A VIEWING APERTURE AT THE SIDE OF SAID CAR FOR PASSING SAID SCANNING BEAM THERETHROUGH, AND A TARGET LOCATED ON THE SIDE OF SAID APERTURE AWAY FROM SAID SCANNING AND RECORDING DEVICE FOR REFLECTING SAID SCANNING BEAM TO SAID RECORDING DEVICE, SAID TARGET BEING MOVED BY SAID DOOR ACTUATING MEANS INTO A POSITION IN ALIGNMENT WITH SAID APERTURE AND REFLECTING SAID SCANNING BEAM WHEN SAID DOORS ARE CLOSED AND INTO ANOTHER POSITION OUT OF ALIGNMENT WITH SAID APERTURE WHEN SAID DOORS ARE OPEN.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |