Land vehicles: bodies and tops – Bodies – Body shell
Reexamination Certificate
1997-09-19
2001-05-08
Dayoan, D. Glenn (Department: 3612)
Land vehicles: bodies and tops
Bodies
Body shell
C296S056000, C296S100100, C298S02300C
Reexamination Certificate
active
06227608
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to trailers, wagons and the like for the transport of goods and materials.
The invention particularly relates to the transport of bulk materials such as mineral concentrates. Open topped trailers are commonly used for the transport of such material. However, in the event of a collision, such materials can be spread over a wide area causing environmental hazards. Also, during transport, rain or spray from the road can adversely affect the goods being carried in the trailer. Also dust rising from the material being carried may undesirably pollute the atmosphere during transport.
The present invention is directed towards overcoming these problems.
BRIEF DESCRIPTION OF THE INVENTION
According to the invention there is provided a wagon comprising a body having a base and upstanding side walls around the base forming with the base an open-topped container for reception of material to be carried in the wagon, a material filling opening being defined by upper ends of the side walls a rigid cover mounted on the side walls, the cover being movable between a closed position across the filling opening and an open position for filling the container body, and sealing means engagable between the cover and the side walls when the cover is in a closed position to seal an interior of the body.
In one embodiment of the invention the body is pivotally mounted on a support chassis, means is provided for tipping the body on the support chassis, a discharge door is provided in the side walls of the body for discharging material from the body when the body is tipped on the chassis, the discharge door being pivotally mounted at its upper end on the body such that a lower end of the discharge door is movable outwardly of the body for discharging material from the body, and a door locking clamp which is releasably engagable with an outer face of the discharge door to releasably secure the discharge door in a closed position.
In another embodiment the door locking clamp comprises a ram-operated beam mounted on the wagon adjacent the discharge door, the beam being movable between an engaged position extending across a lower end of the discharge door and a released position away from the discharge door allowing opening of the discharge door.
Preferably, a discharge door seal is provided for sealing engagement between the discharge door and a door-receiving opening in the body when the discharge door is in the closed position.
In another embodiment the cover is hingedly mounted on a side wall of the body and a sealing flap is provided along a free edge of the cover, the sealing flap, sealingly engageable with an outer face of the opposite side wall when the cover is a closed position.
In a further embodiment the cover locking means is provided for releasably locking the cover In the closed position, the locking means being of two part construction comprising a locking bolt and a complementary receiver, one part being mounted on the cover and the other part being mounted on a side wall of the body.
Preferably the bolt is ram-operated for movement between an extended receiver-engaging locking position and a retracted released position.
In another embodiment the cover is operable by ram means for movement between the closed position and the open position.
Preferably, the ram means is mounted within the body on the side wall on which the cover is hingedly mounted, the ram means extending between an underside of the cover and an inside face of the side wall. Conveniently, the cover is pivotable through an angle of greater than 90° when moving between the closed position and the open position.
In another embodiment the container has tapered sides which taper inwardly between a front end and a rear end of the body at which the discharge door is mounted.
In a preferred embodiment the locking means is of two part construction, comprising a bolt and an associated receiver, one part being on the cover and the other part being on the side wall. Preferably, the bolt is ram operated for movement between an engaged and a released position.
Ideally, also mechanical locking means is provided for further securing the cover in the closed position. For example mechanical screw locks may be provided for engagement between the side walls and the cover.
In a particularly preferred embodiment a seal is engaged between the cover and the side walls when the cover is closed. Thus advantageously the ingress of moisture is prevented and also escape of materials from the container body is prevented. The seal may be mounted on one or both of the cover and side walls.
In another embodiment a rear side wall is formed by a rear discharge door pivotally mounted at a rear end of the container body, having associated locking means to retain the door in a closed position. Preferably, the door is hinged at its upper end to facilitate tipping the container body on a chassis of the trailer to discharge material from the container body.
In a further embodiment the locking means is a ram operated beam mounted at a rear end of the trailer and being moveable between an engaged position across the rear lower end of the door and a released position.
In a particularly preferred embodiment a seal is provided for sealing between the door and a rear end of the container body when the door is closed.
Preferably the container has tapered sides which taper inwardly between a front end and a rear end of the container.
It will be noted that the term wagon as used in this patent specification includes trailers with a container body or vehicles with a container body fixed on the chassis of the vehicle.
REFERENCES:
patent: 3762762 (1973-10-01), Beveridge et al.
patent: 3861737 (1975-01-01), Kirkbride
patent: 3913969 (1975-10-01), Hoch
patent: 4083596 (1978-04-01), Robertson
patent: 4200330 (1980-04-01), Scott
patent: 5190341 (1993-03-01), Simard
patent: 5322336 (1994-06-01), Isler
patent: 5542734 (1996-08-01), Burchett et al.
patent: 0123483 (1984-10-01), None
patent: 0700802 (1996-03-01), None
patent: 2721870 (1996-01-01), None
patent: 2233938 (1991-01-01), None
patent: 1133-139 (1985-01-01), None
Dayoan D. Glenn
Jacobson Price Holman & Stern PLLC
Morrow Jason
LandOfFree
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