Land vehicles: dumping – Miscellaneous – Vibrator means to facilitate removal of material
Reexamination Certificate
2000-05-17
2002-04-16
Gordon, Stephen T. (Department: 3612)
Land vehicles: dumping
Miscellaneous
Vibrator means to facilitate removal of material
C298S012000, C298S014000, C296S035300, C296S184100
Reexamination Certificate
active
06371564
ABSTRACT:
FIELD OF THE INVENTION
The present invention generally relates to pickup trucks, and more particularly relates to dump boxes for pickup trucks, and even more particularly relates to methods and systems for efficient removal of matter from a dump box in a pickup truck.
BACKGROUND OF THE INVENTION
In the past, designers of pickup truck dumping accessories have endeavored to assist with dumping of material from pickups.
One example is shown in U.S. Pat. No. 3,471,045 by Panciocco for AUXILIARY EQUIPMENT FOR PICKUP TRUCKS, which shows an elevated box in a rear portion of a pickup truck.
Another example is shown in U.S. Pat. No. 3,630,571 by Saldana for AUXILIARY DUMPING APPARATUS FOR A VEHICLE, which shows a box which rolls out the back of the truck and pivots, at a central point in the box, to hit the ground.
Another example is shown in U.S. Pat. No. 3,411,825 by Fulton for DUMP-BODY ACCESSORY FOR PICK-UP TRUCK, which shows a box which pivots at an end point of the dump box and at the rear of the pickup box.
Yet another example is shown in U.S. Pat. No. 5,447,361 by Phillips for PORTABLE DUMPING INSERT FOR A PICKUP TRUCK, which shows a box which pivots at a point inside the dump box and the pickup box.
While these pickup dump boxes have been used extensively in the past, they do have some drawbacks.
First of all, the '045 patent shows a dump box which has a high profile box which extends significantly above the height of the box of the truck with the attendant high center of gravity and reduced visibility disadvantages associated with a high profile design.
Some of the disadvantages of the '045 design are overcome with the '571 patent. However, it has disadvantages associated with the fact that the maximum dump angle (the angle of the dump box with respect to the truck bed), is limited by contact of the box with the ground.
Some of the disadvantages of the '571 are overcome by the '825 patent, which achieves a higher maximum dump angle than the '571 design. However, the '825 patent has a problem in that it dumps debris on the bumper of the truck.
The '361 patent, with its interior pivot point and angled box rear end, reduces the problems of the '825 patent of dumping onto the bumper, but the size and shape of the box of the '361 patent prohibit the truck from use in hauling very large objects, such as many sheets of 4 feet by 8 feet sheets of plywood etc.
Consequently, there exists a need for improved methods and systems for removing material from a pickup truck dump box in an efficient manner, while concomitantly allowing the vehicle to be used for hauling large 4×8 sheets.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a system and method for removing matter from a pickup dump box in an efficient manner.
It is a feature of the present invention to include a mechanically assisted, low profile, dump box.
It is another feature of the present invention to include a slight rollback of the box prior to dumping.
It is yet another feature of the present invention to include a box having a 4×8 foot floor for carrying large sheets of plywood, etc.
It is an advantage of the present invention to achieve improved utility in a dump box design.
The present invention is an apparatus and method for dumping material from a box in a pickup truck, designed to satisfy the aforementioned needs, provide the previously stated objects, include the above-listed features, and achieve the already articulated advantages. The present invention is carried out in a “wasted material-less” manner in a sense that the material wasted by remaining in the box due to an insufficient dump angle and the material wasted by dumping on to the truck bumper, etc. has been greatly reduced.
Accordingly, the present invention is a system and method including a low profile, partial roll-out dump box with a full 4×8 foot box floor dimension.
REFERENCES:
patent: 460871 (1891-10-01), Hill
patent: 577913 (1897-03-01), Chrissinger
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patent: 3471045 (1969-10-01), Panciocco
patent: 3630571 (1971-12-01), Saldana
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patent: 3833261 (1974-09-01), Dingler
patent: 3871706 (1975-03-01), Odom
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patent: 4647110 (1987-03-01), McKee
patent: 4681371 (1987-07-01), Leonard
patent: 4741575 (1988-05-01), Sloan
patent: 5267779 (1993-12-01), Talamantez, Jr. et al.
patent: 5447361 (1995-09-01), Phillips
patent: 6196634 (2001-03-01), Jurinek
Behnken Dick
Yates Mike
Gordon Stephen T.
Simmons Perrine Albright & Ellwood PLC
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