Abstract:
This invention describes a bolster bracket assembly for a tank assembly mounted on a truck that fastens the tank assembly to the truck. The mounted tank assembly will have at least two upper support brackets mounted on the front left and right sides of the tank assembly and at least two upper support brackets mounted on the rear left and right sides of the tank assembly. A first and second bottom support bracket are oriented with the upper support brackets and bolt assemblies connect the brackets to allow easy connection and removal of the tank assemblies on the truck bed.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     Trucks that travel on roads require that the body portion be fully attached to the truck or trailer frame. Standard storage vans or tanks generally are built so the frame is smaller than the overall cargo compartment, with the result that the truck or trailer requires additional support under the floor of the van or tank in order to support the weight of the cargo. Generally the cargo van or tank is either bolted or welded to the truck or trailer frame. In other cases the cargo van or tank bed is isolated from the frame with supports that act as shock absorbers to cushion the cargo body.  
         [0003]     2. Description of the Prior Art  
         [0004]     Bolster brackets are known in the art under differing nomenclature.  
         [0005]     U.S. Pat. No. 4,342,106 by Fischer discloses a “Shock-Absorbing Vehicle Frame/Chassis Mounting System. This system consists primarily of a Z shaped member that attaches to a cargo bed. A hole in the Z shaped member allows a bolt to pass through. A rubber bushing with an internal metal sleeve bushing cushions the Z shaped member. The bolt then passes through a frame rail and another rubber bushing under the frame rail. A nut is threadably engaged onto the nut and bears against a washer, lightly crushing both rubber bushings, thereby providing a cushioned support.  
         [0006]     U.S. Pat. No. 4,720,075 by Peterson et al. Discloses a “Shock Isolating Mount”. This devices is a two piece device comprising some elastomeric components that is used to secure a body part of a vehicle to a support. It overcomes previous shortcomings by eliminating left hand tube threading for subassembly. Generally this mount is used in applications that are substantially different than the present invention.  
       SUMMARY OF THE INVENTION  
       [0007]     It is therefore the object of the present invention to provide for a simplified mounting system to attach tanks or cargo containers to existing truck chassis, without the need to drill holes into the frame rails or the tank structure.  
         [0008]     It is a further object of the invention to provide a mounting system that will allow the owner of a truck with the present invention to easily change the mounted tanks or cargo containers since the positioning of the mounts is easily repeatable for interchangeability. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]     1.  FIG. 1  shows an overall perspective of a tanker truck  
         [0010]     2.  FIG. 2  shows a left view of a forward bracket assembly  
         [0011]     3.  FIG. 3  shows a cross sectional view of the forward bracket assembly  
         [0012]     4.  FIG. 4  shows a left view of a rear bracket assembly  
         [0013]     5.  FIG. 5  shows a cross sectional view of the rear bracket assembly 
     
    
     DETAILED DESCRIPTION  
       [0014]     In referring to figure one, a truck ( 1 ) is shown with a mounted tank or van assembly ( 2 ). A forward bracket assembly ( 4 ) is shown being biased towards the front (cab) ( 6 ) of the truck ( 1 ), while a rear bracket assembly ( 8 ) is shown biased towards the rear ( 10 ) of the truck ( 1 ), preferably behind the rear axles.  
         [0015]     With respect to  FIG. 2 , the front bracket assembly ( 4 ) is shown having a first upper support bracket ( 12 ) and a first bottom support bracket ( 14 ). The first bottom support bracket ( 14 ) is shown here “Z” shaped, and is generally fabricated from flat metallic sheet stock of at least ¼ (0.25) inch thick. The first bottom support bracket ( 14 ) has a first flat web ( 16 ), where the first flat web ( 16 ) is generally parallel to a truck chassis frame rail ( 18 ), which allows the first bottom support bracket ( 14 ) to lie flat against the truck chassis frame rail ( 18 ). The first bottom support bracket ( 14 ) has a first upper flange or cap ( 20 ) and a first lower flange or cap ( 22 ). The first upper cap ( 20 ) of the first bottom support bracket ( 14 ) is bent at an angle away from the truck chassis frame rail ( 18 ). The optimum first flange angle ( 24 ) is ninety degrees (90°). The first lower cap ( 22 ) of the first bottom support bracket ( 14 ) is formed to lay against a bottom portion ( 84 ) of the truck chassis frame rail ( 18 ). The first bottom support bracket ( 14 ) is shown having a first width ( 26 ), where the first width ( 26 ) is wide enough to provide adequate spacing for a set of fasteners ( 28 ). The first bottom support bracket ( 14 ) has a first edge ( 30 ) and a second edge ( 32 ). A first gusset ( 34 ) is attached to the first edge ( 30 ) of the first bottom support bracket ( 14 ), where the first gusset ( 34 ) is attached to the first flat web ( 16 ) and the first upper cap ( 20 ) of the first bottom support bracket ( 14 ). A second gusset ( 36 ) is shown attached to the second edge ( 32 ) of the first bottom support bracket ( 14 ), where the second gusset ( 36 ) is attached to the first flat web ( 16 ) and the first upper cap ( 20 ) of the first bottom support bracket ( 14 ). The first and second gussets ( 34 ,  36 ) provide structural support for the first bottom support bracket ( 14 ). A first bottom clamp ( 38 ) is shown as generally having a “c”, or “v” shape, where the first bottom clamp ( 38 ) maintains a clamping pressure between the first bottom support bracket ( 14 ) and the bottom portion ( 84 ) of the truck chassis frame rail ( 18 ) assuring that the first bottom support bracket ( 14 ) has intimate contact with the truck chassis frame rail ( 18 ).  
         [0016]     The first upper support bracket ( 12 ) has a second flat web ( 40 ). A second lower flange or cap ( 42 ) is formed at an angle away from the truck chassis frame rail ( 18 ) and is fabricated to be essentially parallel to the upper cap ( 20 ) of the first bottom support bracket ( 14 ). The second flat web ( 40 ) is shown laying against the truck chassis frame rail ( 18 ) acting as a sway brace for side to side motion of the tank or van assembly ( 2 ). The first upper support bracket ( 12 ) has a second width ( 44 ) where the second width ( 44 ) is essentially equal to the first width ( 26 ) of the first bottom support bracket ( 14 ). The first upper support bracket ( 12 ) has a third edge ( 46 ) and a fourth edge ( 48 ). A third gusset ( 50 ) is attached to the third edge ( 46 ) of the first upper support bracket ( 12 ), where the third gusset ( 46 ) is attached to the second flat web ( 40 ) and the second lower flange ( 42 ). A fourth gusset ( 52 ) is attached to the fourth edge ( 48 ) of the first upper support bracket ( 12 ), where the fourth gusset ( 52 ) is attached to the second flat web ( 40 ) and the second lower flange ( 42 ). The third and fourth gusset ( 46 ,  52 ) provide structural support for the first upper support bracket ( 12 ).  
         [0017]     The first upper support bracket ( 12 ) is attached to the tank or van assembly ( 2 ) and is mounted directly above the first bottom support bracket ( 14 ). The first upper support bracket ( 12 ) is positioned to allow the second flat web ( 40 ) to bear against the truck chassis frame rail ( 18 ). The second lower flange ( 42 ) of the first upper support bracket ( 12 ) has at least 2 holes, a first hole ( 54 ), and a second hole ( 56 ) defined therein. The upper flange ( 20 ) of the first bottom support bracket ( 14 ) has a third hole ( 58 ) and a fourth hole ( 60 ) defined therein, where the first hole ( 54 ) and the third hole ( 58 ) are oriented in line, and the second hole ( 56 ) and the fourth hole ( 60 ) are oriented in line. A bolt assembly ( 62 ) is installed the first and third hole ( 54 ,  58 ), and the second and fourth hole ( 56 ,  60 ). The bolt assembly ( 62 ) comprises a bolt ( 64 ), a first washer ( 66 ) a second washer ( 68 ) a spring ( 70 ) a third washer ( 72 ) and a locking feature ( 74 ) comprising a double nut configuration. The first washer ( 66 ) is shown bearing against the second lower cap ( 42 ) of the upper bracket ( 12 ) and the bolt head ( 134 ), while the second washer ( 68 ) is shown bearing against the first upper cap ( 20 ). The spring ( 70 ) bears against the second washer ( 68 ) and is compressed by the third washer ( 72 ) and the locking feature ( 74 ) here shown as a double nut configuration, where the double nut configuration allows for easy adjustment and tightening of the forward bracket assembly ( 4 ). The bolt assembly ( 62 ) shown allows the tank or van assembly ( 2 ) to be secured to the chassis and allow for flexure of the chassis under load.  
         [0018]     The rear bracket assembly ( 8 ) is shown having a similar configuration to the front bracket assembly ( 4 ) and has a second bottom support bracket ( 75 ) and second upper support bracket ( 76 ). The second bottom support bracket ( 75 ) is shown here as a “Z” shaped bracket having a third flat web ( 78 ), where the third flat web ( 78 ) is parallel to and bears against the truck chassis frame rail ( 18 ), which allows the second bottom support bracket ( 75 ) to lie flat against the truck chassis frame rail ( 18 ). The second bottom support bracket ( 75 ) has a second upper flange or cap ( 80 ) and a third lower flange or cap ( 82 ). The second upper cap ( 80 ) of the second bottom support bracket ( 75 ) is bent at an angle away from the truck chassis frame rail ( 18 ). The optimum first flange angle ( 24 ) is ninety degrees (90°). The third lower cap ( 82 ) of the second bottom support bracket ( 75 ) is formed to lay against a bottom portion ( 84 ) of the truck chassis frame rail ( 18 ). The second bottom support bracket ( 75 ) is shown having a first width ( 86 ), where the first width ( 86 ) is wide enough to provide adequate spacing for a set of fasteners ( 88 ). The second bottom support bracket ( 75 ) has a fifth edge ( 90 ) and a sixth edge ( 92 ). A fifth gusset ( 94 ) is attached to the fifth edge ( 90 ) of the second bottom support bracket ( 75 ), where the fifth gusset ( 94 ) is attached to the third flat web ( 78 ) and the second upper cap ( 80 ) of the second bottom support bracket ( 75 ). A sixth gusset ( 96 ) is shown attached to the sixth edge ( 92 ) of the second bottom support bracket ( 75 ), where the sixth gusset ( 96 ) is attached to the third flat web ( 78 ) and the second upper cap ( 80 ) of the second bottom support bracket ( 75 ). The fifth and sixth gusset ( 94 ,  96 ) provide structural support for the second bottom support bracket ( 75 ). A second bottom clamp ( 39 ) is shown as generally having a “c”, or “v” shape, where the second bottom clamp ( 39 ) maintains a clamping pressure between the second bottom support bracket ( 75 ) and the bottom portion ( 84 ) of the truck chassis frame rail ( 18 ) assuring that the second bottom support bracket ( 75 ) maintains intimate contact with the truck chassis frame rail ( 18 ).  
         [0019]     The second upper support bracket ( 76 ) has a fourth flat web ( 98 ). A fourth lower flange or cap ( 100 ) is formed at an angle away from the truck chassis frame rail ( 18 ) and is fabricated to be essentially parallel to the second upper cap ( 80 ) of the second bottom support bracket ( 75 ). The fourth flat web ( 98 ) is shown laying against the truck chassis frame rail ( 18 ) acting as a sway brace for side to side motion of the tank or van assembly ( 2 ). The second upper support bracket ( 76 ) has a third width ( 102 ) where the third width ( 102 ) is essentially equal to the first width ( 86 ) of the second bottom support bracket ( 75 ). The second upper support bracket ( 76 ) has a seventh edge ( 104 ) and a eighth edge ( 106 ). A seventh gusset ( 108 ) is attached to the seventh edge ( 104 ) of the second upper support bracket ( 76 ), where the seventh gusset ( 108 ) is attached to the fourth flat web ( 98 ) and the fourth lower cap ( 100 ). An eighth gusset ( 110 ) is attached to the eighth edge ( 106 ) of the second upper support bracket ( 76 ) where the eighth gusset ( 110 ) is attached to the fourth flat web ( 98 ) and the fourth lower cap ( 100 ). The seventh and eighth gussets ( 108 ,  110 ) provide structural support for the second upper support bracket ( 76 ). An eighth gusset ( 110 ) is attached to the eighth edge ( 106 ) of the second upper support bracket ( 76 ), where the eighth gusset ( 110 ) is attached to the fourth flat web ( 98 ) and the fourth lower cap ( 100 ).  
         [0020]     The second upper support bracket ( 76 ) is attached to the tank or van assembly ( 2 ) and is mounted directly above the second bottom support bracket ( 75 ). The second upper support bracket ( 76 ) is positioned to allow the fourth flat web ( 98 ) to bear against the truck chassis frame rail ( 18 ). The fourth lower flange ( 100 ) of the second upper support bracket ( 76 ) has at least 2 holes, a fifth hole ( 112 ), and a sixth hole ( 114 ) defined therein. The second upper flange ( 80 ) of the second bottom support bracket ( 75 ) has a seventh hole ( 116 ) and an eighth hole ( 118 ) defined therein, where the fifth hole ( 112 ) and the seventh hole ( 116 ) are oriented in line, and the sixth hole ( 114 ) and the eighth hole ( 118 ) are oriented in line. A second bolt assembly ( 120 ) is installed into the first and third hole ( 112 ,  116 ), and the second and fourth hole ( 112 ,  116 ). The second bolt assembly ( 120 ) comprises a bolt ( 122 ), a fifth washer ( 124 ) a sixth washer ( 126 ), a seventh washer ( 128 ) and a locking feature ( 132 ) comprising a double nut configuration. The fifth washer ( 124 ) is shown bearing against the fourth lower cap ( 100 ) of the second upper support bracket ( 76 ) and the bolt head ( 134 ), while the sixth washer ( 126 ) is shown bearing against the first upper cap ( 20 ). The seventh washer ( 128 ) bears against the sixth washer ( 126 ) and is compressed by the seventh washer ( 128 ) and the locking feature ( 132 ) here shown as a double nut configuration, where the double nut configuration allows for easy adjustment and tightening of the rear bracket assembly ( 8 ).  
         [0021]     The first upper support bracket ( 12 ) is mounted to a frame rail ( 130 ) of the mounted tank or van assembly ( 2 ) biased towards the front of the mounted tank or van assembly ( 2 ). The mounted tank or van assembly ( 2 ) will have at least two ( 2 ) first upper support brackets ( 12 ) mounted, one on the left side of the mounted tank or van assembly ( 2 ), and one on the right side of the mounted tank or van assembly. The first bottom support bracket ( 14 ) is mounted to the truck chassis frame rail ( 18 ) and oriented in line with the first upper support bracket ( 12 ). Similarly the second upper support bracket ( 76 ) is mounted to the frame rail ( 130 ) of the mounted tank or van assembly ( 2 ) and biased towards the rear of the truck chassis frame rail ( 18 ). The mounted tank or van assembly ( 2 ) will have at least two ( 2 ) second upper support brackets ( 76 ) mounted, one on the left side of the mounted tank or van assembly ( 2 ) and one on the right side of the mounted tank or van assembly ( 2 ). The second bottom support bracket ( 75 ) is mounted to the truck chassis frame rail ( 18 ) and oriented in line with the second upper support bracket ( 76 ).  
         [0022]     The mounted tank or van assembly ( 2 ) is lowered over the truck chassis frame rail ( 18 ) and the second flat web ( 40 ) and the fourth flat web ( 98 ). The mounted tank or van assembly ( 2 ) is aligned over the truck chassis frame rail ( 18 ). The first bolt assembly ( 62 ) is attached to the first upper support bracket ( 12 ) and first bottom support bracket ( 14 ). The second bolt assembly ( 120 ) is attached to the second upper support bracket ( 76 ) and the second bottom support bracket ( 75 ).  
         [0023]     The best method of attaching the first upper support bracket ( 12 ) and the second upper support bracket ( 76 ) to the mounted tank or van assembly ( 2 ) is by welding or braising, while the best method of attaching of attaching the first bottom support bracket ( 14 ) and the second bottom support bracket ( 75 ) to the truck chassis frame rails ( 18 ) is by welding or braising. This method would offer the most flexibility in assembling components that are easily replaced, while bolting the brackets to their respective rails would offer the greatest first time assembly flexibility at the cost of future repairs.  
         [0024]     If the manufacturer invested greater amount of money in assembly tooling, then it is possible to weld the first and second bottom support brackets ( 14 ,  75 ) to the truck chassis frame rails ( 18 ), and provide adequate assembly flexibility.  
         [0025]     Although the foregoing includes a description of the best mode contemplated for carrying out the invention, various modifications are contemplated.  
         [0026]     As various modifications could be made in the constructions herein described and illustrated without departing from the scope of the invention, it is intended that all matter contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative rather than limiting.