Patent US3098302A successfully refreshed from Google Patents.
US3098302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting means for infra-red transmitters and receivers
Assignee: Ivacan Inc
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Filing: 1961-06-30
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Granted: 1963-07-23
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Expires: 1981-06-30
Abstract
No abstract record available.
Inventors
- 👤 Stewart John Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:52
CPC Classifications
B; B61; B61L; B61L23/00; B61L23/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A RAILROAD TRACK SURVEYING DEVICE, A FIRST CARRIAGE ADAPTED FOR MOVEMENT IN A RAILROAD TRACK, HIGH FREQUENCY BEAM TRANSMITTED MEANS PIVOTALLY MOUNTED ON SAID FIRST CARRIAGE; A SECOND CARRIAGE ADAPTED FOR MOVEMENT ON THE RAILROAD TRACK AND NORMALLY SPACED FROM SAID FIRST CARRIAGE; HIGH FREQUENCY BEAM RECEIVER MEANS PIVOTALLY MOUNTED ON SAID SECOND CARRIAGE AND ADAPTED TO RECEIVE THE TRANSMITTER BEAM FROM SAID TRANSMITTER MEANS; AND LINKAGE MEANS BETWEEN SAID TRANSMITTER MEANS AND SAID RECEIVER MEANS ADAPTED TO MAINTAIN THE TRANSMITTER MEANS AND THE RECEIVER MEANS IN SUBSTANTIAL ALIGNMENT WITH RESPECT TO EACH OTHER, SAID LINKAGE MEANS INCLUDING A FLEXIBLE LINK SUBSTANTIALLY SPANNING THE DISTANCE BETWEEN THE CARRIAGES.
Claim 2
Dependent Claim
109 words
IN A RAILROAD TRACK SURVEYING DEVICE, A FIRST CARRIAGE ADAPTED FOR MOVEMENT IN A RAILROAD TRACK, HIGH FREQUENCY BEAM TRANSMITTED MEANS PIVOTALLY MOUNTED ON SAID FIRST CARRIAGE; A SECOND CARRIAGE ADAPTED FOR MOVEMENT ON THE RAILROAD TRACK AND NORMALLY SPACED FROM SAID FIRST CARRIAGE; HIGH FREQUENCY BEAM RECEIVER MEANS PIVOTALLY MOUNTED ON SAID SECOND CARRIAGE AND ADAPTED TO RECEIVE THE TRANSMITTER BEAM FROM SAID TRANSMITTER MEANS; AND LINKAGE MEANS BETWEEN SAID TRANSMITTER MEANS AND SAID RECEIVER MEANS ADAPTED TO MAINTAIN THE TRANSMITTER MEANS AND THE RECEIVER MEANS IN SUBSTANTIAL ALIGNMENT WITH RESPECT TO EACH OTHER, SAID LINKAGE MEANS INCLUDING A FLEXIBLE LINK SUBSTANTIALLY SPANNING THE DISTANCE BETWEEN THE CARRIAGES.
References Cited (Backward Citations)
US2730006A
Cited
US2974607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |