US3247514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave identification of railroad cars
Assignee: American Brake Shoe Co
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Filing: 1965-10-05
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Granted: 1966-04-19
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Expires: 1985-10-05
Abstract
No abstract record available.
Inventors
- 👤 Omer F Hamann
- 👤 Sherman H Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:03
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/02; B61L25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A CODED IDENTIFICATION MEMBER FOR USE IN AN AUTOMATIC OBJECT IDENTIFYING SYSTEM COMPRISING A SCANNING STATION INCLUDING A SOURCE OF RADIANT ENERGY SIGNALS OF GIVEN WAVELENGTH, RADIATING MEANS FOR RADIATING SAID SIGNALS WITH A FIRST PREDETERMINED POLARIZATION, AND RECEIVING MEANS FOR RECEIVING RADIANT ENERGY SIGNALS OF SAID GIVEN WAVELENGTH BUT LIMITED TO RECEPTION OF SIGNALS HAVING A SECOND AND SUBSTANTIALLY DIFFERENT POLARIZATION, SAID IDENTIFICATION MEMBER COMPRISING: A PLURALITY OF INDIVIDUAL REFLECTOR ELEMENTS ARRANGED IN A PREDETERMINED CODE SEQUENCE, EACH EFFECTIVE TO REFLECT IMPINGING RADIANT ENERGY SIGNALS OF SAID GIVEN WAVELENGTH BUT WITH SAID SECOND POLARIZATION; AND MEANS FOR MOUNTING SAID REFLECTOR ELEMENTS ON AN OBJECT TO BE IDENTIFIED IN POSITION TO INTERCEPT AND RE-RADIATE SAID RADIANT ENERGY SIGNALS FROM SAID RADIATING MEANS BACK TO SAID RECEIVING MEANS WHEN SAID OBJECT IS IN PREDETERMINED POSITION RELATIVE TO SAID SCANNING STATION.
Claim 2
Dependent Claim
139 words
A CODED IDENTIFICATION MEMBER FOR USE IN AN AUTOMATIC OBJECT IDENTIFYING SYSTEM COMPRISING A SCANNING STATION INCLUDING A SOURCE OF RADIANT ENERGY SIGNALS OF GIVEN WAVELENGTH, RADIATING MEANS FOR RADIATING SAID SIGNALS WITH A FIRST PREDETERMINED POLARIZATION, AND RECEIVING MEANS FOR RECEIVING RADIANT ENERGY SIGNALS OF SAID GIVEN WAVELENGTH BUT LIMITED TO RECEPTION OF SIGNALS HAVING A SECOND AND SUBSTANTIALLY DIFFERENT POLARIZATION, SAID IDENTIFICATION MEMBER COMPRISING: A PLURALITY OF INDIVIDUAL REFLECTOR ELEMENTS ARRANGED IN A PREDETERMINED CODE SEQUENCE, EACH EFFECTIVE TO REFLECT IMPINGING RADIANT ENERGY SIGNALS OF SAID GIVEN WAVELENGTH BUT WITH SAID SECOND POLARIZATION; AND MEANS FOR MOUNTING SAID REFLECTOR ELEMENTS ON AN OBJECT TO BE IDENTIFIED IN POSITION TO INTERCEPT AND RE-RADIATE SAID RADIANT ENERGY SIGNALS FROM SAID RADIATING MEANS BACK TO SAID RECEIVING MEANS WHEN SAID OBJECT IS IN PREDETERMINED POSITION RELATIVE TO SAID SCANNING STATION.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |