Patent US2860248A successfully refreshed from Google Patents.
Patent US5131612A successfully refreshed from Google Patents.
US5131612A
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US
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Arrangement for positively determining the actual sounding of a warning horn on a railway vehicle
Assignee: Westinghouse Air Brake Co
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Filing: 1990-12-07
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Granted: 1992-07-21
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Expires: 2010-12-07
Abstract
Abstract A system for positively determining that an engineman has actually activated a manual whistle valve to sound a pneumatic warning horn on a railway vehicle having a low pressure and high pressure sensing apparatus for conveying signals to an event recorder for monitoring and recording the pressure of an air supply source and the sounding of the pneumatic warning device.
Inventors
- 👤 Elmer T. Skantar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:27
CPC Classifications
B; B61; B61L; B61L23/00; B61L15/00; B61L15/0018; B61L15/0036; B61L15/0094; B61L29/00; B61L29/24
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
84 words
A system for determining the operation of a pressure operated audible warning device of a railway vehicle comprising, a source of air pressure, an actuating valve for directing the flow of air under pressure to sound said warning device, means for sensing the flow of air under pressure, said sensing means includes an air flow adapter which is connected between said actuating valve and said warning device, and means for recording the operation of said actuating valve and the sounding of said warning device.
Claim 2
Independent Claim
84 words
A system for determining the operation of a pressure operated audible warning device of a railway vehicle comprising, a source of air pressure, an actuating valve for directing the flow of air under pressure to sound said warning device, means for sensing the flow of air under pressure, said sensing means includes an air flow adapter which is connected between said actuating valve and said warning device, and means for recording the operation of said actuating valve and the sounding of said warning device.
Claim 3
Dependent Claim
33 words
The system as defined in claim 1, wherein said air flow adapter is connected to an air flow indicator which senses the flow rate of the air pressure flowing to said warning device.
Claim 4
Dependent Claim
36 words
The system as defined in claim 1, wherein said recording means is an event recorder which records the time, date, and location of the operation of said actuating valve and the sounding of said warning device.
Claim 5
Dependent Claim
19 words
The system as defined in claim 1, wherein said warning device is an air horn of a railway vehicle.
Claim 6
Dependent Claim
16 words
The system as defined in claim 1, wherein said source of air pressure is a reservoir.
Claim 7
Independent Claim
83 words
A system for determining the operation of a pressure operated audible warning device of a railway vehicle comprising, a source of air pressure, an actuating valve for directing the flow of air under pressure to sound said warning device, means for sensing the flow of air under pressure, said sensing means includes a pair of tee members connected between said actuating valve and said warning device, and means for recording the operation of said actuating valve and the sounding of said warning device.
Claim 8
Independent Claim
83 words
A system for determining the operation of a pressure operated audible warning device of a railway vehicle comprising, a source of air pressure, an actuating valve for directing the flow of air under pressure to sound said warning device, means for sensing the flow of air under pressure, said sensing means includes a pair of tee members connected between said actuating valve and said warning device, and means for recording the operation of said actuating valve and the sounding of said warning device.
Claim 9
Dependent Claim
31 words
The system as defined in claim 6, wherein one of said pair of tee members is connected to a first pressure sensitive switch which is responsive to a high pressure level.
Claim 10
Dependent Claim
32 words
The system as defined in claim 7, wherein the other of said pair of tee members is connected to a second pressure sensitive switch which is responsive to a low pressure level.
Claim 11
Dependent Claim
21 words
The system as defined in claim 8, wherein said first and second pressure sensitive switches are connected to said recording means.
Claim 12
Independent Claim
80 words
A system for determining the operation of a pressure operated audible warning device of a railway vehicle comprising, a source of air pressure, an actuating valve for directing the flow of air under pressure to sound said warning device, means for sensing the flow of air under pressure, said sensing means includes a manifold connected between said actuating valve and said warning device, and means for recording the operation of said actuating valve and the sounding of said warning device.
Claim 13
Independent Claim
80 words
A system for determining the operation of a pressure operated audible warning device of a railway vehicle comprising, a source of air pressure, an actuating valve for directing the flow of air under pressure to sound said warning device, means for sensing the flow of air under pressure, said sensing means includes a manifold connected between said actuating valve and said warning device, and means for recording the operation of said actuating valve and the sounding of said warning device.
Claim 14
Dependent Claim
23 words
The system as defined in claim 10, wherein said manifold is connected to a high pressure switch and to a low pressure switch.
Claim 15
Dependent Claim
23 words
The system as defined in claim 11, wherein said high pressure switch and said low pressure switch are connected to said recording means.
Claim 16
Dependent Claim
96 words
A warning alarm arrangement for ascertaining that an operator of railway locomotive has taken positive action to sound an air horn, comprising, a compressed air supply, a manual operating valve pneumatically connected to said compressed air supply, an air flow adapter pneumatically connected to said manual operating valve, said air horn pneumatically connected to said air flow adapter, an air flow indicator pneumatically connected to said air flow adapter, and an event recorder electrically connected to said air flow indicator for recording the actuation of said manual operating valve and the sounding of said air horn.
Claim 17
Dependent Claim
96 words
A warning alarm arrangement for ascertaining that an operator of railway locomotive has taken positive action to sound an air horn, comprising, a compressed air supply, a manual operating valve pneumatically connected to said compressed air supply, an air flow adapter pneumatically connected to said manual operating valve, said air horn pneumatically connected to said air flow adapter, an air flow indicator pneumatically connected to said air flow adapter, and an event recorder electrically connected to said air flow indicator for recording the actuation of said manual operating valve and the sounding of said air horn.
Claim 18
Dependent Claim
102 words
A warning alarm arrangement for determining that an operator of a railway vehicle has taken action to sound an air horn comprising, a compressed air supply, a manual operating valve pneumatically connected to said compressed air supply, a pair of tee members pneumatically connected to said manual operating valve, said air horn is pneumatically connected to said pair of tee members, a pair of pressure switches pneumatically connected to said pair of tee members, and an event recorder electrically connected to said pair of pressure switches for recording the actuation of said manual operating valve and the sounding of said air horn.
Claim 19
Dependent Claim
102 words
A warning alarm arrangement for determining that an operator of a railway vehicle has taken action to sound an air horn comprising, a compressed air supply, a manual operating valve pneumatically connected to said compressed air supply, a pair of tee members pneumatically connected to said manual operating valve, said air horn is pneumatically connected to said pair of tee members, a pair of pressure switches pneumatically connected to said pair of tee members, and an event recorder electrically connected to said pair of pressure switches for recording the actuation of said manual operating valve and the sounding of said air horn.
Claim 20
Dependent Claim
92 words
A warning alarm arrangement for ascertaining that an operator of a railway vehicle has taken action to sound an air horn comprising, a compressed air supply, a manual operating valve pneumatically connected to said compressed air supply, a manifold pneumatically connected to said manual operating valve, said air horn pneumatically connected to said manifold, a pair of pressure switches pneumatically connected to said manifold, and an event recorder electrically connected to said pair of pressure switches for recording the actuation of said manual operating switch and the sounding of said air horn.
Claim 21
Dependent Claim
92 words
A warning alarm arrangement for ascertaining that an operator of a railway vehicle has taken action to sound an air horn comprising, a compressed air supply, a manual operating valve pneumatically connected to said compressed air supply, a manifold pneumatically connected to said manual operating valve, said air horn pneumatically connected to said manifold, a pair of pressure switches pneumatically connected to said manifold, and an event recorder electrically connected to said pair of pressure switches for recording the actuation of said manual operating switch and the sounding of said air horn.
References Cited (Backward Citations)
SU191855A1
Cited
US404032A
Cited
US482393A
Cited
US1304727A
Cited
US1041393A
Cited
US1190173A
Cited
US2325451A
Cited
US4052892A
Cited
US4285483A
Cited
US4361825A
Cited
US4720807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-21 | 1996-01-20 | 1996-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-21 | 2000-01-20 | 2000-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-21 | 2004-01-20 | 2004-07-21 | $7700.00 | Window Closed / Lapsed |