US3246140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vigilance monitoring system for locomotive engineer
Assignee: SPX Technologies Inc
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Filing: 1961-12-18
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Granted: 1966-04-12
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Warren R Wrege
- 👤 William J Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:14
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/02; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A VIGILANCE CONTROL SYSTEM FOR LOCOMOTIVE ENGINEER, WHEREIN THE DEGREE OF LOCOMOTOVE BRAKING IS A FUNCTION OF THE AIR PRESSURE IN THE LOCOMOTIVE BRAKE PIPE AND LOCOMOTIVE IS CONTROLLED BY MEANS OF A THROTTLE, COMPRISING, (A) A VALVE FOR MAINTAINING AIR UNDER PRESSURE IN THE LOCOMOTIVE BRAKE PIPE, (B) TIMING MEANS MANUALLY OPERABLE FOR ACTUATING SAID VALVE MEANS TO MAINTAIN AIR PRESSURE IN SAID BRAKE PIPE FOR PRESELECTED TIME CYCLE, (C) AND MEANS RESPONSIVE TO THE MOVEMENT OF THE LOCOMOTIVE THROTTLE FOR ACTUATING SAID TIMING MEANS FOR A PRESELECTED CYCLE.
Claim 2
Dependent Claim
90 words
A VIGILANCE CONTROL SYSTEM FOR LOCOMOTIVE ENGINEER, WHEREIN THE DEGREE OF LOCOMOTOVE BRAKING IS A FUNCTION OF THE AIR PRESSURE IN THE LOCOMOTIVE BRAKE PIPE AND LOCOMOTIVE IS CONTROLLED BY MEANS OF A THROTTLE, COMPRISING, (A) A VALVE FOR MAINTAINING AIR UNDER PRESSURE IN THE LOCOMOTIVE BRAKE PIPE, (B) TIMING MEANS MANUALLY OPERABLE FOR ACTUATING SAID VALVE MEANS TO MAINTAIN AIR PRESSURE IN SAID BRAKE PIPE FOR PRESELECTED TIME CYCLE, (C) AND MEANS RESPONSIVE TO THE MOVEMENT OF THE LOCOMOTIVE THROTTLE FOR ACTUATING SAID TIMING MEANS FOR A PRESELECTED CYCLE.
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |