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US4266352A Expired / Lapsed US ⏱️ 0.0 years remaining

Ballast side plow

Assignee: Canron Corp
•
Filing: 1979-10-11
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Granted: 1981-05-12
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Expires: 1999-10-11
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Abstract

Abstract A railroad ballast plowing machine is provided with a side plow which comprises a pair of plow devices mounted one on each side of the machine in a parallel upright position so that a rectangular main plow board of each plow device extends longitudinally of the track. A first wing is pivotally connected to a leading edge of each plow board and a rear wing is pivotally attached to a trailing edge of each plow board. Each of the first wings includes an inner and an outer flap which is independently rotatable about a substantially vertical hinge line at the leading edge of each plow board. Each of these rear wings includes an inner and outer flap which is independently rotatable about a substantially vertical hinge line at the trailing edge of each plow board. Suitable devices are provided for rotating the flaps. Ballast passing gates are provided in the main plow board adjacent their leading and trailing edges at the bottom of each plow board.

Inventors

  • 👤 George R. Newman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 19:42
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/02; E01B27/023; E01B27/025

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 97 words
A railroad ballast plow device attached in a parallel upright position to one side of a railroad ballast plowing machine, said plow device comprising a longitudinally extending substantially rectangular main plowboard; a first wing means pivotally connected to a leading edge of said plowboard; a second wing means pivotally attached to a trailing edge of said plowboard; and first and second wing means each comprising an inner and an outer flap independently rotatable about a substantially vertical hinge line on one of said leading and trailing edges, relatively to said plowboard; and means to rotate said flaps.
Claim 2
Dependent Claim 97 words
A railroad ballast plow device attached in a parallel upright position to one side of a railroad ballast plowing machine, said plow device comprising a longitudinally extending substantially rectangular main plowboard; a first wing means pivotally connected to a leading edge of said plowboard; a second wing means pivotally attached to a trailing edge of said plowboard; and first and second wing means each comprising an inner and an outer flap independently rotatable about a substantially vertical hinge line on one of said leading and trailing edges, relatively to said plowboard; and means to rotate said flaps.
Claim 3
Dependent Claim 32 words
A device as claimed in claim 1 in which a ballast passing gate is located adjacent the bottom edge of the plowboard in the vicinity of the leading and trailing edges thereof.
Claim 4
Dependent Claim 23 words
A railroad ballast plow machine having a pair of plow devices as claimed in claim 2 mounted thereon one at either side thereof.

References Cited (Backward Citations)

US3250027A Cited
US3491467A Cited
US3651587A Cited
US3877160A Cited
US3803733A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-05-11 1984-11-10 1985-05-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-05-11 1988-11-10 1989-05-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-05-11 1992-11-10 1993-05-12 $7700.00 Window Closed / Lapsed

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