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US 6,152,492 AGranted
Liquid storage tank trailer
AssigneeThe Modern Group, Ltd.
InventorsGary R. Markham, Edgar L. Wolf
Life of this patent
Estimating the term…
Abstract
A mobile fluid storage tank having a base, a substantially vertical front wall, a substantially vertical rear wall, a pair of substantially parallel vertical sides walls, and a roof. The roof has a rear roof portion and a front roof portion. The rear roof portion extends across the rearward portion of the side walls, while the front roof portion is comprised of two different portions, a sloped portion and at least a two-stepped portion. The sloped and step portions are substantially parallel to each other. The stepped portion is comprised of at least two steps. The storage tank also has an inclined stairway attached to the front wall and extending from the stepped portion adjacent one side wall downwardly to the base portion adjacent the opposite side wall.
Claims20
A mobile fluid storage tank comprising:
- a base portion having a front end and a rear end;
- a substantially vertical front wall attached to the front end of said base portion;
- a substantially vertical rear wall attached to the rear end of said base portion;
- a pair of substantially parallel vertical side walls attached to said base portion and to said front and rear walls, said pair of parallel vertical side walls including a first vertical side wall and a second vertical side wall;
- a rear end roof portion extending across the rearward portion of said side walls defining a rear storage chamber;
- a front end roof portion extending across the forward portion of said side walls defining a front storage chamber so that said rear and front storage chambers are in fluid communication;
- said front end roof portion comprising a sloped portion and at least a two-stepped portion, said sloped portion being substantially parallel with said stepped portion;
- said stepped portion comprising at least two steps, each step including a step plate and a riser plate extending generally normal to said step plate, said riser plate being joined at an edge thereof to said step plate;
- and
- an inclined stairway attached to said front wall and extending from said stepped portion adjacent one side wall downwardly to the other side wall proximate said base portion.
7 more elements
A mobile fluid storage tank comprising:
- a base portion having a front end and a rear end;
- a substantially vertical front wall attached to the front end of said base portion;
- a substantially vertical rear wall attached to the rear end of said base portion;
- a first vertical side wall attached to said base portion and to said front and rear walls, said first vertical side wall having a generally decagonal shape;
- a second vertical side wall attached to said base portion and to said front and rear walls, said second wall being parallel said first wall and having a generally irregular heptagonal shape;
- a rear end roof portion extending across the rearward portion of said side walls defining a rear storage chamber;
- a front end roof portion extending across the forward portion of said side walls defining a front storage chamber so that said rear and front storage chambers are in fluid communication;
- said front end roof portion comprising a sloped portion and at least a two-stepped portion, said sloped portion being substantially parallel with said stepped portion and said stepped portion including at least two steps;
- said first vertical side wall being positioned adjacent said two stepped portion;
- said second vertical wall being positioned adjacent said sloped portion;
- and
- an inclined stairway attached to said front wall and extending from said stepped portion adjacent one side wall downwardly to the other side wall proximate said base portion.
9 more elements
A mobile fluid storage tank comprising:
- a base portion having a front end and a rear end;
- a substantially vertical front wall attached to the front end of said base portion;
- a substantially vertical rear wall attached to the rear end of said base portion;
- a first vertical side wall attached to said base portion and to said front and rear walls, said first vertical side wall having a generally decagonal shape;
- a second vertical side wall attached to said base portion and to said front and rear walls, said second wall being parallel said first wall and having a generally irregular heptagonal shape;
- a rear end roof portion extending across the rearward portion of said side walls defining a rear storage chamber;
- a front end roof portion extending across the forward portion of said side walls defining a front storage chamber so that said rear and front storage chambers are in fluid communication;
- said front end roof portion comprising a sloped portion and at least a two-stepped portion, said sloped portion being substantially parallel with said stepped portion and said stepped portion including at least two steps;
- said first vertical side wall being positioned adjacent said two stepped portion;
- said second vertical wall being positioned adjacent said sloped portion;
- an inclined stairway attached to said front wall and extending from said stepped portion adjacent one side wall downwardly to the other side wall proximate said base portion, said stairway having
- a pair of parallel, upwardly and laterally extending risers along said forward wall,
- a plurality of steps extending between said risers, and
- a hand rail disposed above and extending parallel to said risers, said hand rail having an upper section and a lower section separated from said upper section.
11 more elements
Dependencies are inferred from the claim text.