the preferred mode of the invention is shown in fig1 . the tank 3 is , a single seamless enclosure , having a depth of at least 5 feet 4 inches . an individual can stand , run or walk on the treadmill 35 . as discussed the seamless containers of this depth require special considerations for structural integrity due to the enormous amount of water pressure at the lower depths . here , seamless refers to any molded device , whether built on top of a mold or vacuumed formed to a mold . plastic , as used herein , refers to any polyvinyl , polymer , plastic material , man made or otherwise , and also includes acrylic and fiberglass . tank 3 , at a minimum 14 feet long ( sufficient to allow an adult individual to tread or swim at the top ) provides for a minimum of 2200 gallons of water or more . such an incredibly large amount of water creates tremendous water pressure at the lower depths . moreover , the constant running and moving activity of an individual in the pool provides additional stress on the structure as the water is agitated at the lower depths . to create the single seamless tank of the tremendous size involved , capable of handling the moving treadmill and other significant water jet motion therein , special considerations must be given . a thermo plastic method for creating tubs is typically used where a large sheet of plastic material is heated and then pulled by vacuum ( vacuum - formed ) against the surface of a forming mold . to this inventor &# 39 ; s knowledge , no vacuum - formed structure of this size and more particularly this depth has been created because of the difficulties in drawing the plastic to such a depth , while retaining the sufficient structural integrity at the lower depths to handle the greater water pressure and depths . the invention not only achieves structural integrity by providing a smaller recess having stiffening bends and corners at 42 , 43 , 44 and 45 this recess structure also provides a treadmill receiving pan or cavity that also defines a safety step off landing . the treadmill 35 fits snugly within the cavity and is attached utilizing screws and other affixing devices ( that do not penetrate completely through the plastic structure ), at 36 , 37 , 38 and 40 . by having the recess perimeter 32 much smaller than the next highest rib 52 , a safety walk off ledge 54 is created surrounding the treadmill . the spacing 56 around the treadmill between the treadmill and the tank perimeter 32 is minimized ( in the preferred mode ¾ inch ). a drive shaft access chamber 27 is created ( shown also as 51 in fig3 ) to allow the treadmill drive shaft to penetrate the tank . the chamber also provides clearance for assembling the treadmill into the tank . the treadmill shaft with corresponding drive wheel pulley shaft 23 and drive wheel pulley 25 so as to connect to the motor 19 sitting on motor mount 21 , via the smaller motor pulley 18 and corresponding belt 16 . a cover plate covers not only the maintenance access chamber 27 , but also the gap 56 that surrounds the treadmill . the cover plate is preferably of flat stainless steel material approximately 5 inches wide in the preferred mode . the cover plate covers not only the outer frame 60 of the treadmill , but it also extends over to reach a small portion of the tank recess perimeter 32 . by creating the cavity 32 to fit the treadmill could create additional problems could be created by limiting access to adjust the tension of the treadmill . obviously it is not desirable to empty the tank of 2200 gallons of water to make simple tension adjustments that sometimes are required on the treadmill . consequently , it is necessary to adjust the treadmill from above without lifting the treadmill out , something that is extremely physically difficult at the depths of water involved . belt tracking is also important for not only quality control , but to decrease maintenance requirements on the entire treadmill if the belt is not continuously maintained in an optimum position . consequently easy access to adjust the belt by a typical consumer is important . this easy access is achieved via vertical access to an adjustment mechanism 14 . one can simply extend into the water a long wrench , access the adjustment mechanism 14 from above in this fashion , and by turning the same either clockwise or counter - clockwise , adjust the belt tension . a similar corresponding adjustment mechanism 16 exists on the opposing side of the treadmill belt . adjustment of these two in combination provides for the correct tensioning of the treadmill . a detailed description of the tension adjusting mechanisms 14 and 16 are discussed further herein . to provide additional strength for such a large modular container , periodic ribs are spaced from top to bottom . in one mode , these ribs 61 , 63 , 65 and 67 also correspond with steps 71 , 73 , 75 and 77 ( also 11 , 9 , 7 and 5 ). in the swimming mode , swim jets 31 and 33 have outlets 47 and 49 connected to pump and motor means that forces water out the jets from the front end in which they are located to the opposing rear - end so as to create a sufficiently powerful and fast flow of moving water to allow a swimmer to swim in place , much like a runner runs in place on the treadmill . controls at 29 , in the preferred mode are comprised of a control panel board with the necessary switches to control not only the power and speed of the swim jets to allow for slower or faster swimming , but also the power and speed of the treadmill . the control panel also provides an emergency stop means . fig4 discloses a close - up side view of the motor and treadmill assembly ( on the opposing side wall from that shown in fig1 ). the motor 81 rotationally moves the smaller pulley wheel 83 to rotate the belt 85 that is connected to the larger pulley 87 driving the shaft 89 to the treadmill . the shaft penetrates the tank through a hole provided in the tank located in the side of the treadmill receiving cavity . to prevent leaks , it is desired in the preferred mode that this portion of the pan ( where that hole is drilled ) be more vertical . a pressure seal is utilized between the 16 tank and the treadmill drive shaft . also shown in fig4 is a side view of the tension adjustment means 91 shown in more detail in fig5 and 6 , tension means is comprised of a rigid wedge shaped member 90 having elongated threaded hole 94 through which correspondingly threaded pin 95 extends , the non threaded tip of which extends through base plate 96 . the pin is comprised of a hex headed bolt , access to which is gained through a hole in the frame of the treadmill . as the bolt is rotated counter - clockwise ( looking down from above ), the rigid wedge shaped member 94 is forced downward and places pressure against the treadmill roller 97 forcing the treadmill roller 97 backwards further into adjusting slot 98 in which the shaft 99 of the roller rests . consequently , such an adjustment tightens the belt . to reduce the tension on the treadmill belt , the bolt - pin 95 is rotated in the opposite direction and correspondingly moves the wedge shaped member upwards allowing the treadmill roller and shaft to move forward . fig5 also shows a side view of the treadmill with optional support bar 92 removably inserted into corresponding holes 93 in the treadmill . fig7 shows a top detailed view of the treadmill with cover plate 100 . it will be seen that the cover plate extends over the lip 32 ( 32 in fig1 and in fig7 are the same ) of the treadmill recess cavity in the tank . in the preferred mode , the treadmill has suspension / cushioning means , shown in fig8 a , 8 b , and 9 , to cushion the impact of the feet against the treadmill so as to ease the impact physiologically on the feet , knees , legs , etc . during running . upper channel members 110 , 112 , 14 , 116 , 118 , 120 , 122 , 128 each have two ends , each end connected to the top portion of a suspension device ( 130 , 132 , 134 , 136 , 138 , respectively ) . each suspension device is connected to rigid ‘ c ’ channel treadmill frame side members 146 respectively . the individual suspension devices are shown in more detail in fig9 . the upper channel member 150 is itself an upside down rigid ‘ c ’ channel member , for receiving in its interior 152 a correspondingly shaped top portion 154 of an elastomer member 156 , which top portion is smaller than the bottom portion ( base ) 158 of the elastomer member 154 , thus creating a ‘ stop ’ or ledge 160 for extra support and securability of the ‘ c ’ channel 150 . the base 158 rests snugly upon , and is connected to , base member 170 , which base channel member is connected to the frame of the treadmill and extends to the opposing side base channel member . ‘ c ’ channel 150 is smaller than ‘ c ’ channel 170 to provide clearance as the elastomer is compressed . the elastomer is defined as any material having the compression properties of a hard rubberlike material , that tend to compress or absorb energy upon impact . the treadmill upper platform 172 , on which the treadmill belt rides , is connected to each of the upper channels . thus , in use , when an impact occurs against the treadmill during running ; the treadmill compresses the appropriate elastomer material of the corresponding suspension device , causing the elastomer to compress accordingly and absorb the energy of the impact . in another mode of the invention , the treadmill has padding means 180 for creating an additional cushion for impact absorption . the padding means 180 is comprised of any soft rubber - like material , or material having compression properties , situated on the underside of the platform 172 . consequently , it will be seen that what has been invented is a single tank unit of a significant depth and size to allow an individual easy ingress and egress to exercise on the treadmill or a full length swim in place swim jet apparatus , that allows for safe use by the user by allowing for safety step off landing flush with the treadmill in a structurally sound fashion and one that allows relatively easy maintenance and access for tension adjustment at the significant depths involved . the single modular unit also allows for easy and inexpensive construction by allowing for thermo plastic vacuum - formed construction , and easy installation of a single unit . while there have been shown and described particular embodi - ments of the invention , it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention or its equivalent , and , therefore , it is intended by the appended claims to cover all such changes and modifications as fall within the true spirit and scope of the invention .
a combination single unit hydrotherapy and exercise device for allowing multiple exercises including both swimming and running in place , massage , and therapy , having a single seamless enclosure with stairs , and sufficiently long and deep for an adult to swim and stand in , a cavity with treadmill at the bottom with safety walk off ledge , external motor means connected to the treadmill shaft inside the enclosure , swim jets in the front to provide resistance to allow swimming in place , control and safety buttons at the top , treadmill impact absorption means , treadmill adjustment means from above the treadmill , and cavity next to the treadmill cavity for accessing the shaft .