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US4679974A Expired / Lapsed US ⏱️ 0.0 years remaining

Vehicle chock block apparatus for railroad car transport of vehicles

Assignee: Thrall Car Manufacturing Co
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Filing: 1985-10-28
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Granted: 1987-07-14
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Expires: 2005-10-28
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Abstract

Abstract A railroad car having at least one deck for supporting and transporting four-wheel vehicles such as automobiles and trucks, having a pair of spaced apart first and second parallel tracks, secured to the deck longitudinally of the railroad car, having clearance for the wheels on one side of the vehicle to roll between the tracks; a pair of movable chock block apparatus for each vehicle transported on the deck to secure the vehicle against longitudinal movement; each chock block apparatus including a bar with a first end and a second end; a carriage permanently secured to the first track so it cannot be removed from the first track but so it can be moved along the longitudinal axis of the first track without rotation about a vertical axis; the bar first end being connected to the carriage so the bar first end can rotate about a substantially vertical axis at least about 90°; the carriage being releasably securable in a fixed position along the first track; and the bar second end being releasably securable in a fixed position along the second track.

Inventors

  • 👤 Donald J. Blunden

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 15:24
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/08; B60P3/07; B60P3/073; B60P3/075; B60P3/077; B61; B61D; B61D45/00; B61D45/001

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 252 words
A railroad car having at least one deck for supporting and transporting four-wheel vehicles such as automobiles and trucks; a pair of spaced apart first and second parallel tracks, secured to the deck longitudinally of the railroad car, having clearance for the wheels on one side of the vehicle to roll between the tracks; a pair of movable chock block means for each vehicle transported on the deck to secure the vehicle against longitudinal movement; each chock block means including a substantially horizontal bar with a first end and a second end; a carriage permanently secured to the first track so that it cannot be removed from the first track but so that it can be moved along the longitudinal axis of the first track without rotation about a vertical axis; means connecting the bar first end to the carriage so that the bar first end can rotate about a substantially vertical axis at least about 90°; the carriage having means for releasably securing the carriage in a fixed position along the first track; the bar second end having means for releasably securing the bar second end in a fixed position along the second track wherein release of the bar second end from fixed position along the second track requires displacement of the bar first end along the first track for a short distance and securing the bar second end in fixed position along the second track requires displacement of the bar first end along the first track for a short distance.
Claim 2
Dependent Claim 252 words
A railroad car having at least one deck for supporting and transporting four-wheel vehicles such as automobiles and trucks; a pair of spaced apart first and second parallel tracks, secured to the deck longitudinally of the railroad car, having clearance for the wheels on one side of the vehicle to roll between the tracks; a pair of movable chock block means for each vehicle transported on the deck to secure the vehicle against longitudinal movement; each chock block means including a substantially horizontal bar with a first end and a second end; a carriage permanently secured to the first track so that it cannot be removed from the first track but so that it can be moved along the longitudinal axis of the first track without rotation about a vertical axis; means connecting the bar first end to the carriage so that the bar first end can rotate about a substantially vertical axis at least about 90°; the carriage having means for releasably securing the carriage in a fixed position along the first track; the bar second end having means for releasably securing the bar second end in a fixed position along the second track wherein release of the bar second end from fixed position along the second track requires displacement of the bar first end along the first track for a short distance and securing the bar second end in fixed position along the second track requires displacement of the bar first end along the first track for a short distance.
Claim 3
Dependent Claim 46 words
A railroad car according to claim 1 wherein: the means which secures the bar first end to the track includes a pair of telescoped vertical members one of which is connected to the carriage and the other of which is connected to the bar first end.
Claim 4
Dependent Claim 43 words
A railroad car according to claim 2 in which the pair of vertical members is a pin joined to the carriage and a sleeve joined to the bar and the pin and sleeve are fixed against significant vertical displacement relative to each other.
Claim 5
Dependent Claim 85 words
A railroad car according to claim 1 wherein: the first track is a channel member with inwardly directed horizontal flanges at the top which terminate in spaced apart position and define a longitudinal gap; and the means which secures the bar first end to the first track includes a pair of telescoping vertical members, with one of the vertical members being connected to the carriage and extending through the channel member gap and with the other vertical member being connected to the bar first end.
Claim 6
Dependent Claim 52 words
A railroad car according to claim 1 in which: the second track has a series of spaced-apart holes; and the bar second end means for releasably securing the bar second end in a fixed position along the second track includes at least one pin which engages a hole in the second track.
Claim 7
Dependent Claim 34 words
A railroad car according to claim 1 in which the second end of the bar has means which engages the first track when the bar is parallel to and on top of the track.
Claim 8
Dependent Claim 60 words
A railroad car according to claim 1 in which the means for releasably securing the carriage in a fixed position along the first track comprises: a movable pin mounted on the carriage; a plurality of holes in and along the first track; and means to move a portion of the pin into one of the holes in the first track.
Claim 9
Dependent Claim 80 words
A railroad car according to claim 1 in which: the second track has a series of spaced-apart holes; the bar second end means for releasably securing the bar second end in a fixed position along the second track includes at least one pin which engages a hole in the second track; the bar second end being adapted to rest on top of the second track; and the pin being horizontal and positioned beneath and longitudinal to the bar second end.
Claim 10
Dependent Claim 365 words
A railroad car having at least one deck for supporting and transporting four-wheel vehicles such as automobiles and trucks: a pair of spaced apart first and second parallel tracks, secured to the deck longitudinally of the railroad car, having clearance for the wheels on one side of the vehicle to roll between the tracks; the first track being a channel member with inwardly directed horizontal flanges at the top which terminate in spaced apart position and define a longitudinal gap; the second track having a series of spaced-apart holes; a pair of movable chock block means for each vehicle transported on the deck to secure the vehicle against longitudinal movement; each chock block means including a bar with a first end and a second end; a carriage permanently secured to the first track so that it cannot be removed from the first track but so that it can be moved along the longitudinal axis of the first track without rotation about a vertical axis; the carriage having means for releasably securing the carriage in a fixed position along the first track; means connecting the bar first end to the carriage so that the bar first end can rotate about a substantially vertical axis at least about 90°; the means which secures the bar first end to the first track including a pair of telescoping vertical members, with one of the vertical members being connected to the carriage and extending through the channel member gap and with the other vertical member being connected to the bar first end; the bar second end having means for releasably securing the bar second end in a fixed position along the second track, including at least one pin which engages a hole in the second track wherein said pin is fixedly secured to said bar second end and substantially horizontal thereto so that release of the bar second end from fixed position along the second track requires displacement of the bar first end along the first track for a short distance and securing of the bar second end in fixed position along the second track requires displacement of the bar first end along the first track for a short distance.
Claim 11
Dependent Claim 365 words
A railroad car having at least one deck for supporting and transporting four-wheel vehicles such as automobiles and trucks: a pair of spaced apart first and second parallel tracks, secured to the deck longitudinally of the railroad car, having clearance for the wheels on one side of the vehicle to roll between the tracks; the first track being a channel member with inwardly directed horizontal flanges at the top which terminate in spaced apart position and define a longitudinal gap; the second track having a series of spaced-apart holes; a pair of movable chock block means for each vehicle transported on the deck to secure the vehicle against longitudinal movement; each chock block means including a bar with a first end and a second end; a carriage permanently secured to the first track so that it cannot be removed from the first track but so that it can be moved along the longitudinal axis of the first track without rotation about a vertical axis; the carriage having means for releasably securing the carriage in a fixed position along the first track; means connecting the bar first end to the carriage so that the bar first end can rotate about a substantially vertical axis at least about 90°; the means which secures the bar first end to the first track including a pair of telescoping vertical members, with one of the vertical members being connected to the carriage and extending through the channel member gap and with the other vertical member being connected to the bar first end; the bar second end having means for releasably securing the bar second end in a fixed position along the second track, including at least one pin which engages a hole in the second track wherein said pin is fixedly secured to said bar second end and substantially horizontal thereto so that release of the bar second end from fixed position along the second track requires displacement of the bar first end along the first track for a short distance and securing of the bar second end in fixed position along the second track requires displacement of the bar first end along the first track for a short distance.
Claim 12
Dependent Claim 43 words
A railroad car according to claim 9 in which the pair of vertical members is a pin joined to the carriage and a sleeve joined to the bar and the pin and sleeve are fixed against significant vertical displacement relative to each other.
Claim 13
Dependent Claim 34 words
A railroad car according to claim 9 in which the second end of the bar has means which engages the first track when the bar is parallel to and on top of the track.
Claim 14
Dependent Claim 60 words
A railroad car according to claim 8 in which the means for releasably securing the carriage in a fixed position along the first track comprises: a movable pin mounted on the carriage; a plurality of holes in and along the first track; and means to move a portion of the pin into one of the holes in the first track.

References Cited (Backward Citations)

US1778162A Cited
GB967798A Cited
US3673969A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-07-13 1991-01-12 1991-07-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-07-13 1995-01-12 1995-07-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-07-13 1999-01-12 1999-07-14 $7700.00 Window Closed / Lapsed

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