A pneumatic tank trailer that is structurally reinforced in a fuel efficient manner. The trailer includes a tank defined by hoppers and tank walls. Internal frames are joined to the tank at locations where adjacent hoppers meet. The frames extend circumferentially around the tank interior. In some e
A pneumatic tank trailer that is structurally reinforced in a fuel efficient manner. The trailer includes a tank defined by hoppers and tank walls. Internal frames are joined to the tank at locations where adjacent hoppers meet. The frames extend circumferentially around the tank interior. In some embodiments, the frames are multi-piece assemblies. In certain embodiments, each frame includes a cross joist portion extending between opposite tank sides at a location spaced apart from the top and bottom of the tank. In some embodiments, front and rear frames include an internal portion that extends along the sides and top of the tank and an external portion that extends underneath the tank.
대표청구항▼
1. A pneumatic tank trailer comprising: a tank having front and rear ends spaced apart along a longitudinal axis, the tank comprising: a plurality of hoppers each having a top end portion and bottom end portion, the top end portions of adjacent hoppers arranged next to each other and defining hopper
1. A pneumatic tank trailer comprising: a tank having front and rear ends spaced apart along a longitudinal axis, the tank comprising: a plurality of hoppers each having a top end portion and bottom end portion, the top end portions of adjacent hoppers arranged next to each other and defining hopper joint areas, the bottom end portions of the hoppers being spaced apart along the longitudinal axis of the tank,a tank wall extending along the longitudinal axis of the tank and defining an interior of the tank, the tank wall including opposite first and second side wall portions and a top wall portion extending between the first and second side wall portions, the first and second side wall portions of the tank having bottom edge portions that are joined to the top end portions of the hoppers, anda plurality of internal frames joined to the tank in spaced apart relationship along the longitudinal axis of the tank to support the tank against internal pressures therein, each internal frame comprising a bottom portion joined to a respective hopper joint area of the tank, opposite first and second side portions joined to the first and second side wall portions of the tank, respectively, and a cross joist portion extending between the opposite side wall portions of the tank in spaced apart relationship with the bottom portion of the respective internal frame and the top wall portion of the tank; anda carriage connected to and supporting the tank for movement over a road;wherein the bottom portion, the opposite first and second side portions, and the cross joist portion of each frame extend substantially in the same plane. 2. A pneumatic tank trailer as set forth in claim 1 wherein the top wall portion of the tank and bottom end portion of the hoppers are vertically spaced apart by a tank height, the cross joist portion of each internal frame being vertically spaced apart from the bottom end portion of the hoppers by at least two-thirds of the tank height. 3. A pneumatic tank trailer as set forth in claim 1 wherein each internal frame further comprises a top portion joined to the top wall portion of the tank, the top portion being spaced apart from the cross joist portion of the respective frame. 4. A pneumatic tank trailer as set forth in claim 1 wherein each of the internal frames comprises a plurality of frame members that are joined together to form the respective internal frame. 5. A pneumatic tank trailer as set forth in claim 4 wherein the frame members of each internal frame are welded together. 6. A pneumatic tank trailer as set forth in claim 4 wherein each hopper joint area has a curved shape extending from a first high point adjacent the first side wall portion of the tank to a low point about midway between the first and second side wall portions of the tank to a second high point adjacent the second side wall portion of the tank. 7. A pneumatic tank trailer as set forth in claim 6 wherein the plurality of frame members of each internal frame include frame members having adjoining ends adjacent the first and second high points of the respective hopper joint area. 8. A pneumatic tank trailer as set forth in claim 7 wherein said adjoining ends are spaced apart between the first and second high points of the respective hopper joint area and the respective cross joist portion. 9. A pneumatic tank trailer as set forth in claim 4 wherein the plurality of frame members of each of the internal frames includes a top frame member extending along the top wall portion of the tank and having a first end joined to another of the plurality of frame members adjacent first wall portion and second end joined to another of the plurality of frame members adjacent the second wall portion. 10. A pneumatic tank trailer as set forth in claim 9 wherein said first and second ends of the top frame member are joined to a central frame member. 11. A pneumatic tank trailer as set forth in claim 10 wherein the central frame member forms the cross joist portion. 12. A pneumatic tank trailer comprising: a carriage for movement over a road; anda tank connected to and supported by the carriage and having front and rear ends spaced apart along a longitudinal axis, the tank comprising: a plurality of hoppers each having a top end portion and bottom end portion, the top end portions of adjacent hoppers being arranged next to each other and defining hopper joint areas, the bottom end portions of the hoppers being spaced apart along the longitudinal axis of the tank, anda tank wall extending along the longitudinal axis of the tank and defining an interior of the tank, the tank wall including opposite first and second side wall portions and a top wall portion extending between the first and second side wall portions, the first and second side wall portions of the tank having bottom edge portions that are joined to the top end portions of the hoppers, anda plurality of internal frames joined to the tank in spaced apart relationship along the longitudinal axis of the tank to support the tank against internal pressures therein, each of the internal frames being longitudinally aligned with a respective hopper joint area and extending circumferentially around the tank interior, each internal frame having a bottom portion joined to the respective hopper joint area, first and second side portions joined to the first and second wall portions, respectively, and a top portion joined to the top wall portion, each internal frame comprising a plurality of frame members that are joined together to form the respective internal frame, at least some of the internal frames extending circumferentially around the tank interior and continuously contacting the tank wall and respective hopper joint area. 13. A pneumatic tank trailer as set forth in claim 12 wherein each internal frame comprises a plurality of joints at which two of the respective frame members are joined together, the joints being circumferentially spaced apart around the tank interior at locations of the tank that experience low stress when an internal pressure is exerted on the tank. 14. A pneumatic tank trailer as set forth in claim 12 wherein each internal frame comprises a bottom frame member forming the bottom portion of the respective internal frame. 15. A pneumatic tank trailer as set forth in claim 14 wherein each hopper joint area has a curved shape extending from a first high point adjacent the first side wall portion of the tank to a low point about midway between the first and second side wall portions of the tank to a second high point adjacent the second side wall portion of the tank, each bottom frame member having first and second ends located adjacent the first and second high points of the respective hopper joint area, respectively. 16. A pneumatic tank trailer as set forth in claim 15 wherein each internal frame further comprises a central frame member, the central frame member having a first end joined to the first end of the bottom frame member at a joint located adjacent the first high point of the respective hopper joint area and a second end joined to the second end of the bottom frame member at a joint located adjacent the second high point of the respective hopper joint area. 17. A pneumatic tank trailer as set forth in claim 16 wherein each internal frame member comprises a cross joist portion extending between the side portions thereof in spaced apart relationship with the top and bottom portions thereof, the central frame member forming the cross joist portion of the respective internal frame. 18. A pneumatic tank trailer as set forth in claim 16 wherein each internal frame comprises a top frame member that is joined to the central frame member thereof and forms the top portion of the respective frame. 19. A pneumatic tank trailer as set forth in claim 12 wherein the plurality of frame members are joined together by welding. 20. A pneumatic tank trailer comprising: a carriage for movement over a road; anda tank connected to and supported by the carriage and having front and rear ends spaced apart along a longitudinal axis, the tank comprising: a plurality of hoppers including a front hopper adjacent the front end of the tank and a rear hopper adjacent the rear end of the tank, each of the hoppers having a top end portion and bottom end portion, the top end portions of adjacent hoppers arranged next to one another and defining hopper joint areas such that the bottom end portions of the hoppers are spaced apart along the longitudinal axis of the tank; anda tank wall extending along the longitudinal axis of the tank and defining an interior of the tank, the tank wall including a front wall portion defining the front end of the tank, a rear wall portion defining the rear end of the tank, opposite first and second side wall portions, and a top wall portion extending between the first and second side wall portions, the first and second side wall portions of the tank having bottom edge portions that are joined to the top end portions of the hoppers, the front wall portion being joined to the top end portion of the front hopper at a front joint area and the rear wall portion being joined to the top end portion of the rear hopper at a rear joint area;an internal frame for each hopper joint area, each internal frame being joined to the tank in longitudinal alignment with the hopper joint area and extending circumferentially around the tank interior;a front frame joined to the tank in longitudinal alignment with the front joint area and extending circumferentially around the tank interior, the front frame having an internal portion extending inside the tank along the first side wall portion, top wall portion, and second side wall portion of the tank wall and an external portion extending underneath the tank along the front joint area; and a rear frame joined to the tank in longitudinal alignment with the rear joint area and extending circumferentially around the tank interior, the rear frame having an internal portion extending inside the tank along the first side wall portion, top wall portion, and second side wall portion of the tank wall and an external portion extending underneath the tank along the rear joint area.
Heider Merle J. (203 12th St. SW. Humboldt IA 50548) Heider Dale J. (1108 Eighth Ave. SW. Humboldt IA 50548) Heider Leon J. (1107 Third Ave. SW. Humboldt IA 50548) Heider Craig J. (812 S. Taft St. Hu, Trailer construction.
Heider Merle J. (203-12th St. SW. Humboldt IA 50548) Heider Dale J. (1108 Eighth Ave. SW. Humboldt IA 50548) Heider Leon J. (1107 Third Ave. SW. Humboldt IA 50548) Heider Craig J. (812 S. Taft St. Hu, Trailer construction.
Yielding, Bryan; Turner, David; Glinsky, Michael; Bechtold, David A.; Polgrean, Brian, Transport container having compartments that can be individually pressurized.
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