referring now to the drawings , a multi - mode bath module 10 in accordance with the invention is shown in its presently preferred form comprising a hollow , shell - like structure that includes spaced apart top and bottom walls 12 , 14 with opposed pairs of side walls 16 , 18 and end walls 20 , 22 extending generally vertically there between to jointly therwith define the interior of the module . the walls 12 , 14 , 16 , 18 , 20 and 22 are joined integrally to thereby define a monolithic shell - like structure . preferrably , the walls are formed via a vacuum forming process of a thermal plastic material such as acrylic . the lower portions 16l , 18l of side walls 16 , 18 and the lower portions 20l , 22l of end walls 20 , 22 together with the bottom wall 14 define a tub like structure suitable for bathing and / or whirlpool as will be described hereinafter . the upper portion of the side wall 16 has a relatively large opening 24 to provide user access to the interior , the opening being surrounded by an outwardly flared portion 16f of wall 16 which , in turn , integrally merges with a frontal facing wall 17 . sliding doors 26 , 28 are guided by tracks 30 , 32 mounted along the upper and lower surfaces of flared portion 16f to open and close the access . the upper portion of the other side wall 18 includes a planar region 18p which is offset outwardly ( viewed from the interior ) from the lower tub defining portion 18l thereof via a sloping portion 18a . recessed storage and grab bar compartments 34 , 36 are formed in the upper portion of side wall 18 . the recessed storage compartment 34 includes a vertical back wall portion 38 offset outwardly ( when viewed from the interior ) from the planar region 18p . upper , lower and a part of opposed end wall portions 40 , 42 , 44 and 46 , respectively , extend transversely inwardly from the back wall portion 38 a distance beyond the planar region 18p and terminate substantially in a plane that is substantially complanar of the lower portion 18l of side wall 18 . the recessed grab bar compartment 36 includes a back wall portion 48 similarly offset from planar region 18p and similar upper , lower and end wall portions 50 , 52 , 54 and 56 , respectively . a grab bar 58 is suitably mounted to extend between end wall portions 54 and 56 , as shown . the sloping portions 18a and a merging border 18b encircle compartments 34 , 36 in picture frame like fashion . end wall 20 includes a plurality of relatively small openings or ports ( not shown ) to accommodate a standard fixed shower head 60 , and valve and faucet assembly 62 . a conventional mechanical drain lever 64 is mounted in conventional fashion to open and close a water drain 66 provided in the bottom wall 14 . as noted above , the multi - mode bath module 10 affords whirlpool , steam , tanning and mist functions in addition to standard bath and shower . to this end , mode determining inputs are provided . in the case of the whirlpool mode , the inputs comprise a plurality of standard water jet nozzels 68 mounted through appropriate ports or openings in the lower portions 16l , 18l , 20l and 22l of walls 16 , 18 , 20 and 22 , there being two nozzels 68 located along portions 16l , 18l and 20l and a single nozzel located along wall portion 22l . in the case of the steam mode or function the input comprises a standard steam head 70 mounted through a suitable port located along wall portion 20l . the mode determining input in the case of the tanning mode comprises an ultraviolet lamp 72 mounted through an appropriate opening in the top wall 12 . finally , in the case of mist the mode determining inputs comprise a pair of standard mist or rain heads 74 also mounted through suitable openings in the top wall 12 . facilities for enabling operation of the mode determining inputs 68 , 70 , 72 and 74 comprise delivery and operating systems . as will be described , such facilities permit the user to safely select and vary the modes of operation without leaving the interior of the module . the delivery system for the whirlpool mode includes a pump 76 , and plumbing comprising water pipe line 78 for delivering water under pressure to the whirlpool jets 68 and a water pipe line 80 for returning water to pump 76 . as shown , water pipe line 80 is connected to a strainer 82 mounted in an opening of the lower portion 10l of wall 18 . the delivery system for the steam mode includes a steam generator 84 and steam line 86 connected between the generator 84 and the steam head 70 . the delivery system for the mist mode includes a solenoid valve 88 ( see fig5 ) and water lines 90 , 92 . as shown line 90 runs from valve 80 to the mist heads 74 while line 92 runs from valve 88 to a mixing valve 94 ( fig5 ) which is controlled by the personal shower control 96 located in the recessed storage compartment 34 , as will be described . hot and cold water lines 98 , 100 deliver water to the mixing valve 94 . for the tanning mode , the delivery system simply comprises electrical power line 128 ( shown in fig7 only ). with reference to fig7 the operating system for the whirlpool , steam , mist and tanning modes comprises an electro - pneumatic switch unit 104 which responds to pneumatic control signals received from pneumatic control lines 106 , 108 , 110 and 112 . the control lines 106 , 108 , 110 and 112 are respectively connected to control push buttons 114 , 116 , 118 and 120 , respectively which are mounted in the recessed storage compartment 34 as best shown in fig6 . in the presently preferred embodiment the switch unit 104 incorporates four air switches , each being connected to a separate one of the lines 106 - 112 which comprise flexible air hoses . when any of the control push buttons is depressed , a control signal in the form of a burst of air is forced through the corresponding hose to the corresponding air switch to turn the same either &# 34 ; on &# 34 ; or &# 34 ; off &# 34 ; depending upon the state of the switch . the air switches are of conventional design and readily available , as are the push button controls . the four air switches of unit 104 are connected to switch power from a common input power line 122 to four output power lines 124 , 126 , 128 and 130 respectively connected to drive the steam generator 84 , the pump 76 , the ultraviolet lamp 72 and the solenoid valve 88 . in the preferred arrangement the air switches include timing circuits , programmed to provide a 10 minute cycle for each of the modes . if the user does not wish to continue a mode for a full 10 minute span , the mode can be terminated by turning the air switch &# 34 ; off &# 34 ; by depressing the corresponding control push button . the presently preferred embodiment imcorporates a pair of control valves 132 , 134 located along the bottom wall 52 of the recessed grab bar compartment 36 . the operation of such valves is well known and therefore will be only briefly discussed . in this regard , the whirlpool jet nozzels 68 have air inlets 102 associated therewith from which air is drawn into the discharging jet stream of water ( to form bubbles ). the air inlets are connected via piping to the valves 132 , 134 . the valves operate to control the amount of air which can be drawn into the jet streams ( via venturi effect ) by opening and closing the piping to the atmosphere . for added convenience and safety , shelves 136 are mounted in recessed storage compartment 34 which extend less than the full length thereof . a divider 138 separates the shelves from the remainder of the compartment and defines an area for locating a conventional hand held shower consisting of a shower head 140 and flexible hose 142 . a hanger 144 is provided in the compartment for hanging the shower head 140 . the hose 142 is connected via a water line 145 to valve 94 . in order to prevent substantial discharge of water through head 140 during the mist mode , head 140 includes a turn off cock . the recessed storage compartment 34 can be closed via sliding doors 146 , 148 mounted on tracks 150 , 152 disposed along the upper and lower wall portions 40 , 42 . as best shown in fig3 the bottom wall 52 of recessed grab bar compartment 36 and the bottom of the flared portion 16f serves as a seat on which a removable bench unit 154 may be rested . as will be obvious to one skilled in the art , many modifications , variations , alterations and the like may be made in the practices of the present invention without departing from the spirit and scope thereof as set forth in the preceding description and in the claims which follow .
bath module includes a shell - like housing defining interiorly a tub / shower facility wherein whirlpool , steam , tanning and mist functions or modes of operation are selectable through actuation of pneumatic controls located therein . the preferred embodiment includes recessed storage and grab bar compartments , the recessed storage compartment housing the pneumatic controls as well as other items .