Cooperating tank and rack superstructure

1. A cooperating rack structure comprising at least two modules ( 100 / 100 ′), wherein each module ( 100 / 100 ′) comprises:

a cylindrical composite fuel tank ( 50 ) with a first end ( 52 ) and a second end ( 54 ) supporting a valve ( 55 );

a first sub-rack cradle ( 10 ) disposed at the first end;

a second sub-rack cradle ( 10 ) disposed at the second end;

wherein each sub-rack cradle comprises a substantially vertical first outer wall ( 11 ), a substantially horizontal second outer wall ( 12 ), an arc shaped inner wall ( 13 ) having a top arc end ( 14 ) and a bottom arc end ( 15 ), a structural body frame member ( 16 ) affixed to the first and second outer walls and the arc shaped inner wall, a first tensioner guide ( 17 ) adjacent to the top arc end ( 14 ), a second tensioner guide ( 18 ) adjacent to the bottom arc end ( 15 ), a catch ( 19 ) formed in each of the tensioner guides, a top bracket mount ( 30 ) extending from the first outer wall, a bottom bracket mount ( 32 ) formed on the second outer wall, a front rack leg mounting plate ( 40 ) formed perpendicular to the second outer wall ( 14 ), and one or more back rack leg mountings ( 42 ) formed along the first outer wall ( 12 );

one or more tensioner assemblies ( 70 ); and

two straps ( 60 ), each strap attached to each of the first and second sub-rack cradles and wrapping around the cylindrical body of the fuel tank ( 50 ), each strap having a first strap end ( 62 ) and a second strap end ( 63 ) with a strap mount guide ( 64 ) formed in each end,

wherein each strap ( 60 ) is affixed to the sub-rack cradle ( 10 ) via one or more of the tensioner assemblies ( 70 ), with the tensioner assembly ( 70 ) having a bolt ( 72 ) with a head ( 73 ), a plate ( 74 ), a spring ( 75 ) and a nut ( 76 ) used to compress the spring against the plate; and

wherein the at least two modules are mounted together in a vertically stacked arrangement, with each successive upper module ( 100 ′) above the prior lower module ( 100 )being affixed via the top bracket mount ( 30 ) of the lower module to the bottom bracket mount ( 32 ) of the upper module forming a connection ( 250 ), and wherein the mounting places the substantially horizontal outer walls ( 12 ) of the sub-rack cradles of the upper module ( 100 ′) above and not touching the fuel tank ( 50 ) and straps ( 60 ) of the lower module ( 100 ).

2. The cooperating rack structure of claim 1 wherein the modules are affixed to legs ( 300 ) with connections between the legs ( 300 ) and front rack leg mounting plate ( 40 ) and back rack leg mounting ( 42 ).

3. The cooperating rack structure of claim 1 wherein the fuel tanks ( 50 / 50 ′/ 50 ″) in each module form a portion of the superstructure of the rack ( 400 ).

4. The cooperating rack structure of claim 1 , further comprising an isolator ( 25 ) attached to the arc shaped inner wall ( 13 ) and an isolator ( 25 ) formed between a lower horizontal outer wall and a vertical outer wall and attached to each strap ( 60 ) disposed between the strap ( 60 ) and the fuel tank.

5. The cooperating rack structure of claim 4 , wherein each isolator comprises rubber.