Land vehicles – Tank or boiler – Semitrailer tank vehicle
Reexamination Certificate
1999-01-19
2001-03-13
DePumpo, Daniel G. (Department: 3611)
Land vehicles
Tank or boiler
Semitrailer tank vehicle
C280S839000, C280S414500, C222S166000, C414S474000, C414S484000
Reexamination Certificate
active
06199910
ABSTRACT:
BACKGROUND OF THE INVENTION
tanks are currently provided for storing and dispensing fluids, such as fracturing liquids, drilling muds, and the like, for use at an oil or gas well site. Such tanks are also used to receive and hold fluids and chemicals at industrial plants. They are also used on environmental clean-up jobs, as well as spills, to hold fluids until they can be properly disposed of. When empty, these tanks are towed by truck from one site to another, where they are refilled and reused. The tanks usually have lengths of 30 to 40 feet, a height of from approximately 9 to 12 feet, and a width of 8 feet. Various federal, state and local highway ordinances limit the size of these trailers for over-the-road transport. These tanks are constructed to have a large capacity, holding thousands of gallons of liquid; therefore, there is a need to provide a mobile storage tank constructed and arranged to not only increase the storage capacity of the tank for holding fluids at the job site, but also dimensioned to conform to the highway ordinances for over-the-road transport.
SUMMARY OF THE INVENTION
The mobile storage tank of the present invention is provided with a ladder and manholes which are recessed into the walls of the tank so that a maximum height of twelve feet, six inches, and a width of eight feet, six inches can be obtained, and still be in conformance with highway law regulating the size of trailers.
The storage tank is provided with a sloped bottom wall and a side manhole positioned so that a person, while standing on the ground, can have access to the interior of the tank for the cleaning thereof.
The storage tank is also provided with a jack system and a king pin for a fifth wheel on the front thereof, and a rear wheel lift system, to not only facilitate the towing of the empty tanks by a regular tractor, but also to facilitate the draining of the tank, and provide a new method of transporting and draining fluid from the tanks.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:
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Birch & Stewart Kolasch & Birch, LLP
DePumpo Daniel G.
LandOfFree
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