Canadian Patents Database / Patent 2643893 Summary

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(12) Patent: (11) CA 2643893
(54) English Title: DUAL PURPOSE BITUMEN/DILUENT RAILROAD TANK CAR
(54) French Title: WAGON-CITERNE A DEUX COMPARTIMENTS POUR LE TRANSPORT DE BITUME ET/OU DE DILUANT
(51) International Patent Classification (IPC):
  • B61D 5/00 (2006.01)
  • B61D 47/00 (2006.01)
  • B65D 88/74 (2006.01)
  • B65G 65/30 (2006.01)
  • B65G 67/00 (2006.01)
  • B65G 69/06 (2006.01)
(72) Inventors (Country):
  • MOLARO, GREG (Canada)
  • PERRY, GLEN F. (Canada)
(73) Owners (Country):
  • ALTEX ENERGY LTD. (Canada)
(71) Applicants (Country):
  • ALTEX ENERGY LTD. (Canada)
(74) Agent: BENNETT JONES LLP
(45) Issued: 2016-01-19
(22) Filed Date: 2008-11-17
(41) Open to Public Inspection: 2010-05-17
Examination requested: 2013-07-11
(30) Availability of licence: N/A
(30) Language of filing: English

English Abstract

A dual-purpose railcar is provided, designed for hauling of bitumen or diluent, optimized to provide transport of bitumen to a destination and transport of diluent in the return trip of the car.


French Abstract

Un wagon à double usage est fourni, conçu pour le transport de bitume ou diluant, optimisé pour assurer le transport de bitume à une destination et le transport de diluant dans le voyage de retour du wagon.


Note: Claims are shown in the official language in which they were submitted.


CLAIMS:
1. A dual purpose railway tank car comprising:
(a) conventional running gear, wheels, suspension, undercarriage and
carriage
equipment;
(b) an insulated tank capable of being pressurized;
(c) the materials from which the tank, associated fittings, valves, seals
and connectors
are made being suitable for use in loading, carriage and unloading of target
payloads of heated bitumen and solvent-like hydrocarbon diluent;
(d) the tank including a heat-exchange means, capable of transferring heat
energy
from steam or heated fluid provided from a source external to the tank, to the

tank's contents when loaded, and capable of transferring heat energy from the
tank and associated equipment via a heat-absorbing fluid to a heat-sink
external to
the tank, as and when required;
(e) the tank including on- and off-loading means to load hot bitumen into
the tank
and to alternately unload bitumen from the tank, the bitumen before being
unloaded having been heated to reduce its viscosity to permit substantially
complete unloading;
(f) the tank being sized to a volume which when filled with a target
payload of
solvent-like diluent will be less than or equal to the upper limit payload and
car
weight allowed to operate on conventional railways;
(g) the tank ear when loaded with hot bitumen to the upper limits of
payload and car
weight allowed to operate on conventional railways is filled to less than or
equal
to the tank's volumetric capacity; and
(h) the tank car to be suitable for safe and legally permissible carriage
of solvent-type
diluent hydrocarbon and valve, hatch and fitting seals suitable for low vapor-
pressure diluent containment.
12


2. A tank car of claim 1 that when loaded with bitumen reaches the weight
capacity of the
rail system, but is less than 90% of the volumetric capacity of the tank car.
3. The tank car of claim 1 which has tank shields, end-caps, bottom sump
and valve
protection, and top side valve protection and is suitable for transport of low
vapor pressure
diluent compliant with DOT, AAR and CTC safety requirements.
4. The tank car of claim 1 which is thermally insulated to preserve heat in
the bitumen
present at loading and provided with heat-exchange means so heat can be added
to the bitumen
prior to unloading to affect the viscosity of the bitumen to permit
substantially complete
unloading using conventional valve and pump means.
5. The tank car of claim 1 with conventional heat exchange means in or on
its tank for
heating bitumen in the tank with steam provided from sources external to the
tank car, or for
cooling the tank with coolant fluid from external sources to provide for safe
loading of diluent
into the tank.
6. A process of efficient bitumen transport by a dual purpose railway tank
car comprising
the steps of:
(a) Heating bitumen and flowing the bitumen into the tank car's insulated
tank until
the car reaches its maximum weight load;
(b) Transporting the heated bitumen to a destination by rail;
(c) Heating the bitumen in the insulated tank by application of steam
supplied at the
destination through a heat exchanger in or on the insulated tank containing
the
bitumen;
(d) Flowing the heated bitumen out of the insulated tank until the tank is
emptied;
(e) Sufficiently cooling the insulated tank by provision of water or fluid
at suitable
temperature to the heat exchanger in the insulated tank to avoid flash
evaporation
of its next load;
(f) Loading the tank car to its maximum volumetric capacity with diluent;
13


(g) Transporting the diluent by rail to another destination; and
(h) Unloading the diluent from the tank ear.
7. The process of claim 6, but with the steps in the order f, g, h, a b, c,
d, e.
8. A process of efficient bitumen transport by a dual purpose railway tank
car comprising
the steps of:
(a) Heating bitumen and flowing the bitumen into the tank car's insulated
tank until
the car reaches its maximum weight load;
(b) Transporting the heated bitumen to a destination by rail;
(c) Heating the bitumen in the insulated tank by application of steam
supplied at the
destination through a heat exchanger in or on the insulated tank containing
the
bitumen;
(d) Flowing the heated bitumen out of the insulated tank until the tank is
emptied; and
(e) Cooling the insulated tank by provision of water or fluid at suitable
temperature to
the heat exchanger in the insulated tank to prepare the tank to safely receive
its
next load.
9. A process of efficient diluent transport by a dual purpose railway tank
car comprising the
steps of:
(a) Cooling the insulated tank of the tank car by provision of water or
fluid at suitable
temperature to a heat exchanger in the insulated tank to prepare the tank to
safely
receive diluent and avoid flash evaporation of the loaded diluent;
(b) Loading the tank car to its maximum volumetric capacity with diluent;
(c) Transporting the diluent by rail to another destination; and
(d) Unloading the diluent from the tank car.
14


A single figure which represents the drawing illustrating the invention.

For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Administrative Status , Maintenance Fee  and Payment History  should be consulted.

Admin Status

Title Date
(22) Filed 2008-11-17
(41) Open to Public Inspection 2010-05-17
Examination Requested 2013-07-11
(45) Issued 2016-01-19

Maintenance Fee

Description Date Amount
Last Payment 2016-08-18 $200.00
Next Payment if small entity fee 2017-11-17 $100.00
Next Payment if standard fee 2017-11-17 $200.00

Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following

  • the reinstatement fee set out in Item 7 of Schedule II of the Patent Rules;
  • the late payment fee set out in Item 22.1 of Schedule II of the Patent Rules; or
  • the additional fee for late payment set out in Items 31 and 32 of Schedule II of the Patent Rules.

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Filing $400.00 2008-11-17
Registration of Documents $100.00 2010-05-03
Maintenance Fee - Application - New Act 2 2010-11-17 $100.00 2010-08-10
Maintenance Fee - Application - New Act 3 2011-11-17 $100.00 2011-09-06
Request for Examination $800.00 2013-07-11
Reinstatement: Failure to Pay Application Maintenance Fees $200.00 2013-07-11
Maintenance Fee - Application - New Act 4 2012-11-19 $100.00 2013-07-11
Maintenance Fee - Application - New Act 5 2013-11-18 $200.00 2013-07-11
Maintenance Fee - Application - New Act 6 2014-11-17 $200.00 2014-08-05
Final $300.00 2015-10-15
Maintenance Fee - Application - New Act 7 2015-11-17 $200.00 2015-11-13
Maintenance Fee - Patent - New Act 8 2016-11-17 $200.00 2016-08-18

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Document
Description
Date
(yyyy-mm-dd)
Number of pages Size of Image (KB)
Abstract 2008-11-17 1 5
Description 2008-11-17 11 495
Claims 2008-11-17 2 39
Drawings 2008-11-17 2 17
Representative Drawing 2010-04-20 1 11
Cover Page 2010-05-03 1 34
Drawings 2015-04-22 2 17
Claims 2015-04-22 3 118
Description 2015-04-22 11 508
Claims 2015-09-01 3 119
Cover Page 2015-12-23 1 34
Correspondence 2008-12-11 1 17
Correspondence 2009-11-04 2 60
Correspondence 2009-11-25 1 14
Correspondence 2009-11-25 1 16
Prosecution-Amendment 2010-02-17 2 58
Correspondence 2010-05-12 1 15
Fees 2010-08-10 1 200
Fees 2011-09-06 1 199
Fees 2014-08-05 1 33
Prosecution-Amendment 2013-09-09 3 96
Fees 2013-07-11 1 163
Prosecution-Amendment 2013-07-11 1 41
Prosecution-Amendment 2013-09-12 1 20
Prosecution-Amendment 2013-09-26 2 58
Correspondence 2013-11-13 1 12
Prosecution-Amendment 2015-05-29 3 186
Prosecution-Amendment 2014-10-23 2 89
Prosecution-Amendment 2015-04-22 15 597
Prosecution-Amendment 2015-09-01 9 328
Correspondence 2015-10-15 1 42
Fees 2015-11-13 1 33