Base de données sur les brevets canadiens / Sommaire du brevet 2716710 

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Disponibilité de l'Abrégé et des Revendications

L'apparition de différences dans le texte et l'image des Revendications et de l'Abrégé dépend du moment auquel le document est publié. Les textes des Revendications et de l'Abrégé sont affichés :

  • lorsque la demande peut être examinée par le public;
  • lorsque le brevet est émis (délivrance).
(12) Demande de brevet: (11) CA 2716710
(54) Titre français: CHASSIS DE REMORQUE A CULBUTAGE VERS L'ARRIERE
(54) Titre anglais: END DUMP TRAILER
(51) Classification internationale des brevets (CIB):
  • B60P 1/16 (2006.01)
(72) Inventeurs (Pays):
  • KERR, DARRYL JAMES (Canada)
  • YOWIN, YOWIN DANIEL (Canada)
  • RITZ, TAYLOR JAMES (Canada)
(73) Titulaires (Pays):
  • WRT EQUIPMENT LTD. (Canada)
(71) Demandeurs (Pays):
  • WRT EQUIPMENT LTD. (Canada)
(74) Agent: MCKAY-CAREY & COMPANY
(45) Délivré:
(22) Date de dépôt: 2010-10-07
(41) Mise à la disponibilité du public: 2012-04-07
Requête d’examen: 2015-10-02
(30) Licence disponible: S.O.
(30) Langue des documents déposés: Anglais

Abrégé anglais





A trailer frame assembly for a fifth wheel trailer frame in which at least a
portion
of the frame is torsionally stiffened with a rectangular closed section in a
transverse
cross section. The rectangular closed section is formed by longitudinal,
parallel spaced
vertical side plates, a top pan extending between top portions of the side
plates, and a
bottom pan between bottom portions of the side plates. Overlap joints between
the side
plates and the top and bottom pans allow for connection with threaded or rivet

fasteners. An end dump semi trailer is also provided with a double acting lift
cylinder on
each side of the trailer. The cylinder is mounted at a lower end to the
trailer frame and
at an upper end to an upper rail on the dump body. The dump body may be formed

with a radiused floor section by bending a connected floor panel, side wall
panel and
upper rail over a curved mandrel frame, without rolling the floor panel, and
connecting
the ends to front and rear body panel assemblies prior to releasing the dump
body from
the curved mandrel frame. Also provided is a latch lift assembly for a dump
gate using
a linkage assembly to impart vertical upward movement to dump gate to unlatch
the
dump gate from a cradle catch.


Note : Les revendications sont présentées dans la langue officielle dans laquelle elles ont été soumises.




We claim:


1. A trailer frame assembly for a fifth wheel trailer frame, the trailer frame
being of a
type adapted to be pulled by a tractor, and having a longitudinal axis, a
front portion
adapted for connecting to the tractor, and a rear portion adapted to
accommodate a
connection to ground engaging wheels, the trailer frame assembly comprising:
a pair of longitudinal, parallel spaced vertical side plates extending at
least a
portion of a length between the front portion and the rear portion of the
trailer frame
assembly, each side plate having a top portion and a bottom portion;
a top pan extending between the top portions of the spaced side plates, the
top
pan having opposed side edge portions;
a right angled top connecting wall formed on the top portion of each of the
side
plates or on each of the side edge portions of the top pan to provide opposed
top
overlap joints extending longitudinally along each of the side plates;
a bottom pan extending between the bottom portions of the spaced side plates,
the bottom pan having side edge portions;
a right angled bottom connecting wall formed on the bottom portion of each of
the
side plates or on each of the side edge portions of the bottom pan to provide
opposed
bottom overlap joints extending longitudinally along each of the side plates;
a plurality of top fasteners extending through the top overlap joints to
connect the
top pan and the spaced side plates; and
a plurality of bottom fasteners extending through the bottom overlap joints to

connect the bottom pan and the spaced side plates;
such that the connected spaced side plates, the top pan and the bottom pan
together form at least a portion of the trailer frame assembly, and provide a
rectangular
closed section in a transverse cross section.


2. The trailer frame assembly of claim 1 wherein:
the top pan extends generally horizontally between the spaced side plates, and

the top pan is formed with the right angled top connecting wall at each of the
side edge



39




portions to form the opposed top overlap joints parallel to the side plate;
and
the bottom pan extends generally horizontally between the spaced side plates,
and the bottom pan is formed with the right angled bottom connecting wall at
each of
the side edge portions to form the opposed bottom overlap joints parallel to
the side
plate.


3. The trailer frame assembly of claim 2, wherein the top and bottom fasteners
are
threaded or rivet fasteners.


4. The trailer frame assembly of claim 2, which further comprises one or more
vertical pan support plates connected between the top pan and the bottom pan
with
threaded or rivet fasteners.


5. The trailer frame assembly of claim 4, wherein the side plates, the top
pan, the
bottom pan and the vertical pan support plates are formed from steel or
aluminum
plates or sheets.


6. The trailer frame of assembly claim 4, wherein the side plates, the top
pan, the
bottom pan and the vertical pan support plates are formed from steel plates or
sheets,
wherein each of the top pan and the bottom pan are formed in a plurality of
longitudinally spaced sections, and wherein the vertical pan support plates
extend
transversely across at least a portion of a distance between the spaced side
plates.


7. The trailer frame assembly of claim 6, wherein the top overlap joints are
formed
at inwardly facing top portions of the side plates, and wherein the bottom
overlap joints
are formed at inwardly facing bottom portions of the side plates.


8. The trailer frame assembly of claim 6, wherein the opposed side edge
portions of
the top pan each form a top flange extending horizontally above and outwardly
from the
side plates.



40


9. The trailer frame assembly of claim 6, wherein one or both of the top pan
and the
bottom pan is formed with cut out portions between the opposed side edge
portions.

10. The trailer frame assembly of claim 9, wherein the cut out portions are
generally
triangular or diamond shaped.

11. The trailer frame assembly of claim 6, wherein the side plates are formed
with cut
out portions.

12. The trailer frame assembly of claim 11, which further comprises:
the side plates having a reduced height at the front portion of the trailer
frame to
accommodate the tractor;
a king pin assembly connected with threaded or riveted fasteners between the
side plates at the front portion of the trailer frame;
a rear axle and suspension assembly connected to the rear portion of the
trailer
frame;
ground engaging wheels mounted on the rear axle and suspension assembly;
and
a retractable landing gear leg connected to each of the side plates between
the
front portion and the rear portion of the trailer frame.

13. The trailer frame assembly of claim 12, which further comprises an upper
longitudinal support members connected at the top portion of each of the side
plate at
the front portion of the side plates having a reduced height.

14. The trailer frame assembly of claim 13, which further comprises a bottom
longitudinal support member connected at the lower portion of each of the side
plates
below the king pin assembly.

15. The trailer frame assembly of claim 12, wherein the side plates extend
from the
41


front portion to the rear portion of the trailer frame, and wherein the
trailer frame further
comprises:
the side plates having a reduced height at the front portion of the trailer
frame to
accommodate the tractor;
a king pin assembly connected with threaded or riveted fasteners between the
side plates at the front portion of the trailer frame;
a rear axle and suspension assembly connected with threaded or rivet fasteners
between the side plates at the rear portion of the trailer frame;
ground engaging wheels mounted on the rear axle and suspension assembly;
and
a retractable landing gear leg connected to each of the side plates between
the
front portion and the rear portion of the trailer frame.

16. The trailer frame assembly of claim 15, which further comprises a bottom
longitudinal support member connected at the lower portion of each of the side
plates
below the king pin assembly.

17. The trailer frame assembly of claim 1, adapted for an end dump trailer,
and which
further comprises:
a pair of parallel spaced, downwardly extending side plate extensions, each of
the side plate extensions being connected to the lower portion of each of the
side plates
between the front portion and the rear portion of the trailer frame assembly;
a lower lift cylinder mounting assembly connected to each side plate
extension,
and adapted to provide a pivotal mount to an end of a lifting cylinder;
a cross member extending between the side plate extensions;
a rear hinge assembly connected at the rear portion of the trailer frame
assembly
adapted to connect to a rear end of a dump body.

18. The trailer frame assembly of claim 17, wherein the side plate extensions
are
connected to the side plates with threaded or rivet fasteners.

42


19. The trailer frame assembly of claim 17, which further comprises:
a dump body including a closed front end, an open rear end, a floor, opposed
side walls, and an upper rail connected at a top end of each of the side walls
and
extending longitudinally along each of the side walls, the dump body being
hinged to the
rear portion of the trailer frame at the rear end to the frame for pivotal
movement
between a lowered position for loading and transporting bulk material and a
raised
position for dumping the bulk material from its open rear end;
a dump gate including an upper portion and a lower portion, the dump gate
being
horizontally pivotally connected at its upper end portion across the rear end
of the dump
body through a hinge assembly for movement between a closed position, wherein
the
dump gate closes the open rear end of the dump body, and an open position
wherein
the dump gate is swung rearwardly away from the open end of the dump body;
a pair of double acting lift cylinders connected between the trailer frame and
the
dump body for raising and lowering the dump body on the frame; a lower end of
each of
the lift cylinders being pivotally connected to one of the lower lift cylinder
mounting
assemblies, and an upper end of each of the lift cylinders being pivotally
connected to
the upper rail of the dump body at a point rearwardly of the lower lift
cylinder mounting
assemblies such that each of the lift cylinders is angled generally rearwardly
and
upwardly from its lower end to its upper end.

20. An end dump trailer having a front end adapted for connecting to a
tractor, and a
rear end, the end dump trailer comprising:
a wheeled trailer frame adapted for connection to the tractor, the frame
including
a pair of longitudinal, parallel spaced vertical side members, each of the
side members
having opposed ends, and a lower lift cylinder mounting assembly connected on
each
side of the frame forwardly of a midpoint between the opposed ends;
a dump body including a closed front end, an open rear end, a floor, opposed
side walls, and an upper rail connected at a top end of each of the side walls
and
extending longitudinally along each of the side walls, the dump body being
hinged at the
rear end to the frame for pivotal movement between a lowered position for
loading and

43


transporting bulk material and a raised position for dumping the bulk material
from its
open rear end;
a dump gate including an upper portion and a lower portion, the dump gate
being
horizontally pivotally connected at its upper end portion across the rear end
of the dump
body through a hinge assembly for movement between a closed position, wherein
the
dump gate closes the open rear end of the dump body, and an open position
wherein
the dump gate is swung rearwardly away from the open end of the dump body;
a pair of double acting lift cylinders connected on opposed sides of the dump
body between the frame and the dump body for raising and lowering the dump
body on
the frame; a lower end of each of the lift cylinders being pivotally connected
to one of
the lower lift cylinder mounting assemblies, and an upper end of each of the
lift cylinders
being pivotally connected to the upper rail of the dump body at a point
rearwardly of the
lower lift cylinder mounting assembly such that each of the lift cylinders is
angled
generally rearwardly and upwardly from its lower end to its upper end.

21. The end dump trailer of claim 20, wherein the lift cylinders are two or
three stage
double acting hydraulic cylinders, and have a length sufficient to raise the
dump body to
an angle which is at least 40 degrees to horizontal.

22. The end dump trailer of claim 12, wherein the dump body has a length to
width
ratio between 2.5:1 and 6:1, such as between 3.5:1 and 4.5:1.

23. The end dump trailer of claim 22, wherein:
each of the lower lift cylinder mounting assemblies is connected to the side
member;
the upper rails of the dump body extend laterally outwardly beyond the side
members such that each of the lift cylinders is angled generally rearwardly,
upwardly
and outwardly from its lower end to its upper end;
wherein the pivotal connections at the upper and lower ends of each of the
lift
cylinders allow for pivotal movement in at least two planes; and

44


the upper rails include rail stiffening members at the point of connecting the
upper end of the lift cylinder to each of the upper rails.

24. The end dump trailer of claim 23, wherein the upper end of the lift
cylinder is
connected to the upper rail at a point which is in a middle three quarters or
a middle one
half of the length of the dump body.

25. The end dump trailer of claim 24, wherein the floor of the dump body has a
radiused cross section.

26. The end dump trailer of claim 24, wherein the side walls are integral
with, or
connected to, the floor; and the side walls are tapered, curved or vertical
relative to the
floor.

27. The end dump trailer of claim 24, wherein the floor is formed from a
single sheet
of steel, without a transverse seam.

28. The end dump trailer of claim 1, wherein the side members are connected
together with a generally horizontal top pan and a generally horizontal bottom
pan such
that the frame forms a rectangular closed section in a transverse cross
section.

29. The end dump trailer of claim 24, which further comprises a cross member
extending between the side members adjacent the lower ends of the lift
cylinders for
structural strength.

30. A method of forming a dump body for an end dump trailer, comprising:
i. providing a floor panel in a single, flat, seamless metal sheet, the floor
panel having a front end, a rear end and opposed side edges;
ii. connecting a side wall panel along each of the opposed side edges of the
floor panel, each side wall panel having a front end coextensive with the
front end of the


floor panel a rear end coextensive with the rear end of the floor panel, and
opposed free
edges;
iii. connecting or forming an upper rail along each of the free edges of the
side wall panel, the upper rail having a polygonal cross sectional shape to
provide
structural strength;
iv. bending the connected floor panel, side wall panels and upper rails around
a curved mandrel frame without rolling the floor panel, such that at least the
floor panel
has a radius of curvature;
v. clamping the connected floor panel, side walls and top rails to the curved
mandrel from to maintain the radius of curvature;
vi. connecting a front body panel assembly to the upper rails and to the
coextensive front ends of the floor panel and side walls to form a closed
front end of the
dump body;
viii. connecting a rear body panel assembly to the upper rails and to the
coextensive rear ends of the floor panel and the side walls to form a rear end
of the
dump body; and
ix. releasing the dump body from the curved mandrel frame, whereby the
front body panel assembly and the rear body panel assemblies maintain the
radius of
curvature in the floor panel.

31. The method of claim 30, wherein the connecting step uses one or more of
welding, adhesives, threaded fasteners or rivet fasteners.

32. The method of claim 30, wherein the floor panel, the side wall panels and
the
upper rails are formed from steel, and wherein the connecting step uses
welding.

33. The method of claim 32, wherein each of the upper rails is connected to an
outer
and upper surface of the side wall panel, and provides a generally rectangular
or
triangular cross sectional shape.

46


34. The method of claim 33, wherein:
the curved mandrel frame is convex shaped;
the connected floor panel, side wall panels and upper rails are bent over the
curved mandrel frame in an upside down configuration with the upper rail
facing
outwardly;
the clamping step uses tie down members extending over the connected floor
panel, side wall panels and upper rails and fastened to the curved mandrel
frame; and
the tie down members are tightened, cinched or tensioned to pull the connected
floor panel, side wall panels and upper rails into contact with the curved
mandrel frame.
35. The method of claim 33, wherein:
the dump body has a finished longitudinal floor length comprising a distance
between the front end and the rear end of the floor panel;
the dump body has a finished width comprising a distance between an outer
surface of the upper rails; and
the floor panels, the side walls, the upper rails, and the curved mandrel
frame are
sized and configured such that, after being released from the curved mandrel
frame, the
dump body has a ratio of the finished floor length to the finished width which
is between
2.5:1 and 6:1, such as between 3.5:1 and 4.5:1.

36. The method of claim 35 wherein the ratio is within an on-road size
regulation.
37. The method of claim 36, wherein the curved mandrel frame includes:
a front end curved guide mandrel adapted to support the coextensive front ends

of the floor panel and the side wall panels;
a rear end curved guide mandrel adapted to support the coextensive rear ends
of
the floor panel and the side wall panels;
a pair of parallel spaced longitudinal rails;
wheels mounted to the front end curved guide mandrel and to the rear end
curved guide mandrel, such that the front end curved guide mandrel and the
rear end
47


curved guide mandrel are adapted to roll on the longitudinal rails so as to be

longitudinally spaced apart by an adjustable distance to accommodate the
longitudinal
length of the floor panel.

38. The method of claim 37, wherein the rear body panel assembly extends
upwardly
from the upper rail and includes a dump gate having an upper end portion, and
being
horizontally pivotally connected at the upper end portion across the rear end
of the
dump body through a hinge assembly.

39. An end dump trailer, comprising:
a wheeled frame;
a dump body including a closed front end, an open rear end, a floor and
opposed
side walls, the dump body being supported on the frame and hinged at the rear
end to
the frame for pivotal movement between a lowered position for loading and
transporting
bulk material and a raised position for dumping the bulk material from its
open rear end;
one or more lift cylinders between the frame and the dump body for raising and

lowering the dump body on the frame;
a dump gate including an upper portion and a lower portion, the dump gate
being
horizontally pivotally connected at its upper end portion across the rear end
of the dump
body through a hinge assembly for movement between a closed position, wherein
the
dump gate closes the open rear end of the dump body, and an open position,
wherein
the dump gate is swung rearwardly away from the open end of the dump body; and
a pair of latch lift assemblies, each connected at opposing sides of the dump
body between the dump body and the dump gate, for latching the dump gate in
the
closed position, each latch lift assembly including;
a horizontal latch pin connected to the side of the dump gate;
an upwardly opening cradle catch connected to the side of the dump body
to receive the latch pin, the cradle catch forming a rearwardly and upwardly
inclined ramp portion to retain the latch pin in a latched position;
a linkage assembly pivotally mounted between the dump body and the
48


hinge assembly such that rotation of the linkage assembly imparts a vertical
upward movement to the dump gate sufficient for the latch pin to clear the
ramp
portion of the cradle catch for unlatching, while also permitting the
horizontal
pivotal movement to the dump gate; and
an actuator connected between the dump body and the linkage assembly
for rotating the linkage assembly.

40. The end dump trailer of claim 39, wherein:
the dump body includes a body rear panel assembly connected to the opposing
sides of the dump body;
the linkage assembly and the actuator are enclosed in the body rear panel
assembly to remain out of contact with the bulk material; and
the cradle catch is connected to a side of the body rear panel assembly to
receive the latch pin.
to
41. The end dump trailer of claim 40, wherein:
the actuator includes a pressure activated cylinder and a driven rod connected
to
the cylinder; and
the linkage assembly includes a link plate and a tie rod, the tie rod having
an
upper end pivotally connected to the hinge assembly and a lower end pivotally
connected to the link plate, the link plate having triangularly arranged
first, second and
third pivot points to provide a first pivot connection to the body rear panel
assembly, a
second pivot connection to the driven rod and a third pivot connection to the
lower end
of the tie rod, such that rotation of the link plate around the first pivot
connection, and
vertical upward movement to the dump gate, may be caused by extending the
driven
rod or retracting the driven rod.

42. The end dump trailer of claim 41, wherein the driven rod is positioned
generally
horizontally when the dump body is in the lowered position, and wherein the
cylinder is
air actuated.

49


43. The end dump trailer of claim 42, wherein:
the hinge assembly comprises a lift link arm extending generally horizontally
between a fixed hinge mount on the body rear panel assembly and the upper
portion of
the dump gate, the lift link arm having a front pivotal connection to the
fixed hinge mount
and a rear pivotal connection to the dump gate, the rear pivotal connection
being
located more rearwardly than the front pivotal connection; and
the tie rod is pivotally connected at its upper end to the lift link arm such
that
extension of the driven rod or retraction of the driven rod causes rotation of
the link plate
and the vertical upward movement to the dump gate.

44. The end dump trailer of claim 43, wherein the dump gate moves between the
open and closed positions by gravity as the lift cylinder moves the dump body
between
its lowered and raised positions, and wherein the weight of the dump gate
holds the
latch pin in the cradle catch when the dump gate is in the closed position.

45. The end dump trailer of claim 44, wherein the air actuated cylinder is
single
acting to impart the vertical movement to the dump gate during opening by
extending
the driven rod.

46. The end dump trailer of claim 44, wherein the air actuated cylinder is
double
acting to impart the vertical movement to the dump gate during opening and
closing by
extending and retracting the driven rod.



Une figure unique qui représente un dessin illustrant l’invention.

Pour une meilleure compréhension de l’état de la demande ou brevet qui figure sur cette page, la rubrique Mise en garde , et les descriptions de Brevet , États administratifs , Taxes périodiques et Historique des paiements devraient être consultées.

États admin

Titre Date
(22) Dépôt 2010-10-07
(41) Mise à la disponibilité du public 2012-04-07
Requête d'examen 2015-10-02

Taxes périodiques

Description Date Montant
Dernier paiement 2017-10-05 200,00 $
Prochain paiement si taxe applicable aux petites entités 2018-10-09 100,00 $
Prochain paiement si taxe générale 2018-10-09 200,00 $

Avis : Si le paiement en totalité n’a pas été reçu au plus tard à la date indiquée, une taxe supplémentaire peut être imposée, soit une des taxes suivantes :

  • taxe de rétablissement prévue à l’article 7 de l’annexe II des Règles sur les brevets ;
  • taxe pour paiement en souffrance prévue à l’article 22.1 de l’annexe II des Règles sur les brevets ; ou
  • surtaxe pour paiement en souffrance prévue aux articles 31 et 32 de l’annexe II des Règles sur les brevets.

Historique des paiements

Type de taxes Anniversaire Échéance Montant payé Date payée
Dépôt 400,00 $ 2010-10-07
Enregistrement de documents 100,00 $ 2011-01-07
Taxe périodique - Demande - nouvelle loi 2 2012-10-09 100,00 $ 2012-08-24
Taxe périodique - Demande - nouvelle loi 3 2013-10-07 100,00 $ 2013-08-28
Taxe périodique - Demande - nouvelle loi 4 2014-10-07 100,00 $ 2014-10-06
Requête d'examen 800,00 $ 2015-10-02
Taxe périodique - Demande - nouvelle loi 5 2015-10-07 200,00 $ 2015-10-02
Taxe périodique - Demande - nouvelle loi 6 2016-10-07 200,00 $ 2016-10-07
Taxe périodique - Demande - nouvelle loi 7 2017-10-10 200,00 $ 2017-10-05

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Filtre Télécharger sélection en format PDF (archive Zip)
Description du
Document
Date
(yyyy-mm-dd)
Nombre de pages Taille de l’image (Ko)
Abrégé 2010-10-07 1 30
Description 2010-10-07 38 1 871
Revendications 2010-10-07 12 507
Dessins 2010-10-07 27 616
Dessins représentatifs 2011-10-31 1 24
Page couverture 2012-03-28 1 60
Revendications 2017-02-01 9 346
Dessins 2017-02-01 27 615
Correspondance 2011-01-07 1 48
Taxes 2014-10-06 1 33
Taxes 2012-08-24 1 42
Taxes 2013-08-28 1 33
Taxes 2015-10-02 1 33
Poursuite-Amendment 2015-10-02 3 119
Poursuite-Amendment 2015-10-21 2 65
Poursuite-Amendment 2016-08-02 4 292
Taxes 2016-10-07 1 33
Poursuite-Amendment 2017-02-01 26 1 029
Poursuite-Amendment 2017-06-29 3 158
Poursuite-Amendment 2017-07-12 22 780
Revendications 2017-07-12 9 324
Taxes 2017-10-05 1 33