U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
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(definitions have been obtained from the
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is produced by the U.S. Patent and Trademark Office
Electronic Products Branch)
Class 298
LAND VEHICLES: DUMPING
Class Definition:
Vehicles other than track or rail vehicles and commonly known
as dumping-wagons, dump-carts, dumping-sleighs,
dumping-barrows, chute-wagons, etc., adapted for carrying a
freight-load and so constructed and arranged that by
manipulation of the whole or a part of the vehicle the load
or some considerable part thereof will move by gravity to
unload the vehicle.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
For dump-cars see Class 105, Railway Rolling Stock, subclass
239, and indented subclasses.
For a self-loading or unloading vehicle having a load
receiving portion which is pivotable relative to the
horizontal, see Class 414, Material Article Handling,
subclasses 469+, and see especially the search note to this
class (298) which appears in subclass 469.
For a device for emptying a portable receptacle, see Class
414, Material or Article Handling, subclasses 403+, and see
particularly indented subclasses 419+.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, appropriate subclasses,
for closures of the type provided for and see the search
notes thereto in section IV for the loci of closures in other
classes.
222, Dispensing, appropriate subclasses, for other dispensing
devices.
280, Land Vehicles, subclass 47.17 for handle-propelled
tiltable vehicles, and see the search note under indented
subclass 47.26 referring to Class 298.
SUBCLASSES
Subclass:
1
Patents falling within this class and not properly
classifiable in other subclasses thereof.
Subclass:
2
Specially adapted to be propelled by hand.
Subclass:
3
Mounted on one wheel.
Subclass:
4
Supported on runners.
Subclass:
5
Dumping-vehicles of all types mounted on two wheels.
Subclass:
6
Those of the type indicated where means is provided to
operate an end-gate or cover through the dumping operation of
the vehicle or means for doing so manually where such means
is located at a distance from the end-gate or cover.
Subclass:
7
Dumping-vehicles of any type having some modification of the
vehicle to adapt a delivery chute thereto or some combined
structure of the vehicle and delivery-chute.
SEE OR SEARCH CLASS:
193, Conveyors, Chutes, Skids, Guides, and Ways, subclasses
4+ for chutes, per se,
Subclass:
8
Dumping-vehicles of any type where the load is divided into
separate units and can be separately dumped, excepting that a
tiltable load-receptacle having removable partitions is not
included, but is found in other subclasses of this class
under proper type.
Subclass:
9
This subclass is indented under the class definition. Dumping
vehicles in which the load-receptacle is rotatable about a
vertical axis prior to, during or after tilting thereof.
Subclass:
10
Those in which the load-receptacle rotates about a fixed
pivot to turn the load out of the open top of the
receptacle.
Subclass:
11
Where the load-receptacle is tilted to permit the load to
slide off the bottom of the receptacle, there being also an
elevation of the load-receptacle as a whole.
SEE OR SEARCH CLASS:
414, Material or Article Handling, subclasses 697+, for
material moving devices with a vertical swinging load support
of the tilting shovel or fork type.
Subclass:
12
This subclass is indented under the class definition. Dumping
vehicles in which the load-receptacle as a whole is movable
in a horizontal or downwardly inclined direction prior to,
during or after tilting thereof.
Subclass:
13
Those of the type indicated where the load is dumped at the
side of the vehicle.
Subclass:
14
Provided with additional means for effecting any of the
movements of the load-receptacle, either to dump the load or
return the receptacle to its load-carrying position, or
both.
Subclass:
15
Where the operation is effected by a movement of the vehicle
as a whole or through the movement of some substantial part
thereof.
Subclass:
16
Operated by the power plant that propels the vehicle.
Subclass:
17
Where the load-receptacle is capable of assuming an inclined
or tilted position to permit the load to slide off the
inclined bottom of the receptacle.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 166.
Subclass:
17.5
This subclass is indented under subclass 17. Devices in which
the load-receptacle is (1) selectively tiltable about at
least one of a plurality of pivot axes or (2) tiltable about
an axis which progressively changes concurrently with the
tilting (e.g., rocking support).
Subclass:
17.6
This subclass is indented under subclass 17.5. Devices in
which the load-receptacle is optionally tiltable in a
selected one of a plurality of different directions (e.g.,
towards either side).
Subclass:
17.7
This subclass is indented under subclass 17.6. Devices in
which the load-receptacle is optionally tiltable to either an
end or a side.
Subclass:
17.8
This subclass is indented under subclass 17.6. Devices
wherein the pivot axis about which the load-receptacle is
tilted, during at least one tilting cycle, sequentially moves
from one to another of a plurality of fulcrum points, (e.g.,
rocking support).
Subclass:
18
Where the load is dumped at the side of the vehicle.
Subclass:
19
Provided with additional means for effecting the tilting of
the load-receptacle or returning it to its load-carrying
position, or both.
Subclass:
20
Where the operation is effected by a movement of the vehicle
as a whole or through the movement of some substantial part
thereof.
Subclass:
21
Operated by the power plant that propels the vehicle.
Subclass:
22
Provided with fluid-pressure operators.
Subclass:
23
Those of the type indicated where means is provided to
operate an end-gate or cover through the dumping operation of
the vehicle or means for doing so manually where such means
is located at a distance from the end-gate or cover.
Subclass:
24
Consisting of a box-container having a movable part or parts
adapted, when moved, to permit the load to fall by gravity.
SEE OR SEARCH CLASS:
222, Dispensing, particularly subclass 476, et seq.
Subclass:
25
Consisting of sections pivoted together.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 29+
Subclass:
26
Where the bottom as a whole is pivoted to tilt to permit the
load to slide by gravity.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 29+ where the bottom is divided and each section
is pivoted.
Subclass:
27
Where the bottom of the load-receptacle can be opened to
permit the load to drop by gravity to a position under the
vehicle.
Subclass:
28
The load-receptacle is provided with the removable part or
parts indicated.
Subclass:
29
Where the bottom of the load-carrier consists of a door or
doors hinged to open and permit the load to drop.
SEE OR SEARCH THIS CLASS, SUBCLASS:
25
Subclass:
30
Where the hinge extends transversely of the vehicle only.
Subclass:
31
Where the hinge extends longitudinally of the vehicle only.
Subclass:
32
Having a plurality of doors so hinged that they swing
parallel to each other.
Subclass:
33
So hinged that the doors swing in opposite directions.
Subclass:
34
Swinging in opposite directions and toward a median of the
vehicle in dropping the load.
Subclass:
35
Swinging in opposite directions and toward the outside of the
vehicle to drop the load.
Subclass:
36
Also movable in a vertical direction.
Subclass:
37
Those of the type indicated having a single door-closing
operator so constructed that all the doors are tightly
closed. Such devices also permit the closing of one door in
advance of another.
Subclass:
38
Holding devices adapted to releasably hold a movable part of
a dump-wagon in its normal or load-carrying position.
SEE OR SEARCH CLASS:
292, Closure Fasteners, for closure-fasteners of general
utility.
Information Products Division -- Contacts
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Last Modified: 6 October 2000