US4067522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad safety and warning arrangement
Assignee: Individual
•
Filing: 1977-03-30
•
Granted: 1978-01-10
•
Expires: 1997-03-30
Abstract
Abstract A railroad safety and warning arrangement characterized by a single foot pedal which initiates the consecutive operation of a locomotive bell and both the locomotive bell and a locomotive whistle. The operation of the preceding alarms are discontinued by means of a release mechanism which selectively disengages a notched control arm from a side edge of the foot pedal.
Inventors
- 👤 Orie L. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:38
CPC Classifications
B; B61; B61L; B61L29/00; B61L29/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
A railroad safety and warning arrangement comprising a housing supporting a pivotal foot pedal, a first signaling mechanism and a second signaling mechanism operatively responsive to movement of said foot pedal, means maintaining the foot pedal at a first position for operation of said first signaling mechanism and maintaining the foot pedal at a second position for simultaneous operation of said first signaling mechanism and said second signaling mechanism.
Claim 2
Dependent Claim
69 words
A railroad safety and warning arrangement comprising a housing supporting a pivotal foot pedal, a first signaling mechanism and a second signaling mechanism operatively responsive to movement of said foot pedal, means maintaining the foot pedal at a first position for operation of said first signaling mechanism and maintaining the foot pedal at a second position for simultaneous operation of said first signaling mechanism and said second signaling mechanism.
Claim 3
Dependent Claim
26 words
The railroad safety and warning arrangement of claim 1 where said first signaling mechanism is a bell and where said second signaling mechanism is a whistle.
Claim 4
Dependent Claim
30 words
The railroad safety and warning arrangement of claim 1 where said foot pedal selectively engages a valve for said first signaling mechanism and a valve for said second signaling mechanism.
Claim 5
Dependent Claim
56 words
The railroad safety and warning arrangement of claim 1 where said means is a pivotal control arm normally biased into engagement with an edge of said foot pedal, and where said first position is defined by a notch in said control arm and where said second position is defined by another notch in said control arm.
Claim 6
Dependent Claim
24 words
The railroad safety and warning arrangement of claim 4 where means are provided for releasing said control arm from engagement with said foot pedal.
Claim 7
Dependent Claim
23 words
The railroad safety and warning arrangement of claim 5 where spring means urge said foot pedal upwardly upon release of said control arm.
References Cited (Backward Citations)
US1521793A
Cited
US3467798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |