US4017044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Train vehicle control apparatus
Assignee: Bombardier Transportation Holdings USA Inc
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Filing: 1975-08-06
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Granted: 1977-04-12
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Expires: 1995-08-06
Abstract
Abstract A train vehicle zero speed sensing apparatus is provided for operation with a pair of tachometers coupled to the drive mechanism of a train vehicle, such that zero speed or an equivalent zero speed of the vehicle is sensed, and any single failure is detectable and will not yield a false zero speed indication.
Inventors
- 👤 Larry W. Anderson
- 👤 Michael P. McDonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:21
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/16; B61L3/22; B61L3/221; B60; B60L; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/72
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
147 words
In control apparatus responsive to the movement of a train vehicle, the combination of: means operative with said train vehicle for providing a first speed signal having a first polarity when said train vehicle is moving in a predetermined direction at a speed greater than a predetermined zero speed and having a second polarity when said train vehicle is not moving in said direction at greater than said predetermined zero speed, means operative with said train vehicle for providing a second speed signal having said first polarity when said train vehicle is moving at a speed greater than said predetermined zero speed and having said second polarity when said train vehicle is not moving at greater than said predetermined zero speed, and means for providing a vehicle control signal in response to each of said first speed signal and said second speed signal having said first polarity.
Claim 2
Dependent Claim
147 words
In control apparatus responsive to the movement of a train vehicle, the combination of: means operative with said train vehicle for providing a first speed signal having a first polarity when said train vehicle is moving in a predetermined direction at a speed greater than a predetermined zero speed and having a second polarity when said train vehicle is not moving in said direction at greater than said predetermined zero speed, means operative with said train vehicle for providing a second speed signal having said first polarity when said train vehicle is moving at a speed greater than said predetermined zero speed and having said second polarity when said train vehicle is not moving at greater than said predetermined zero speed, and means for providing a vehicle control signal in response to each of said first speed signal and said second speed signal having said first polarity.
Claim 3
Dependent Claim
63 words
The control apparatus of claim 1, with said first polarity being negative when said train vehicle is moving in said predetermined direction at a speed greater than said predetermined zero speed and with said second polarity being positive when said vehicle is moving in one of a different direction or in said predetermined direction at a speed less than said predetermined zero speed.
Claim 4
Dependent Claim
59 words
The control apparatus of claim 1, with said first vehicle control signal being operative to control the propulsion of said vehicle when both of said first and second speed signals have said first polarity and being operative to control the braking of said vehicle when at least one of said first and second speed signals has said second polarity.
Claim 5
Dependent Claim
32 words
The control apparatus of claim 1, with said vehicle control signal providing means including a pair of logic devices responsive to said first polarity of the respective first and second speed signals.
Claim 6
Dependent Claim
55 words
The control apparatus of claim 1, with said first speed signal providing means including a signal switching apparatus for providing an output of said first polarity when said train vehicle is moving in said predetermined direction at a speed greater than said predetermined zero speed and for otherwise providing an output of said second polarity.
Claim 7
Dependent Claim
29 words
The control apparatus of claim 1, with said vehicle control signal being provided when each of said first speed signal and said second speed signal has said first polarity.
Claim 8
Dependent Claim
33 words
The control apparatus of claim 1, including means for providing a second vehicle control signal in response to each of said first speed signal and said second speed signal having said second polarity.
Claim 9
Dependent Claim
205 words
In control apparatus responsive to the movement of a train vehicle, the combination of: means responsive to the movement speed of said train vehicle for providing at least two output signals in accordance with said speed, means responsive to one of said output signals for providing a first speed signal having a first polarity when said vehicle is moving in a first direction at an actual speed greater than a predetermined zero speed and having a second polarity when said vehicle is not moving at an actual speed greater than said predetermined zero speed, means responsive to another of said output signals for providing a second speed signal having said first polarity when said vehicle is moving in said first direction at an actual speed greater than said predetermined zero speed and having said second polarity when said vehicle is not moving at an actual speed greater than said predetermined zero speed, means for providing a first vehicle control signal in response to each of said first speed signal and said second speed signal having said first polarity, and means for providing a second vehicle control signal in response to each of said first speed signal and said second speed signal having said second polarity.
Claim 10
Dependent Claim
205 words
In control apparatus responsive to the movement of a train vehicle, the combination of: means responsive to the movement speed of said train vehicle for providing at least two output signals in accordance with said speed, means responsive to one of said output signals for providing a first speed signal having a first polarity when said vehicle is moving in a first direction at an actual speed greater than a predetermined zero speed and having a second polarity when said vehicle is not moving at an actual speed greater than said predetermined zero speed, means responsive to another of said output signals for providing a second speed signal having said first polarity when said vehicle is moving in said first direction at an actual speed greater than said predetermined zero speed and having said second polarity when said vehicle is not moving at an actual speed greater than said predetermined zero speed, means for providing a first vehicle control signal in response to each of said first speed signal and said second speed signal having said first polarity, and means for providing a second vehicle control signal in response to each of said first speed signal and said second speed signal having said second polarity.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |