inasmuch as a plurality of embodiments are illustrated together in a composite form , each will be treated separately below . referring to fig1 and 3 , an exercise device is generally illustrated at 10 as comprising a platform 12 which is divided into two sections 14 and 16 . the section 14 fixedly mounts a rubber mat 18 for supporting and providing traction for the feet of a user . the section 16 supports the manipulative portion of the exercise device . the section 16 carries a base 20 secured to the platform 12 and supporting a handle structure 22 which comprises an elongate coil spring 24 which has its lower end secured to the base 20 , as by welding . the upper end of the spring 24 has an apertured plate 25 secured thereto , also as by welding . the plate 25 has a tube 26 welded thereto so as to provide a passageway into the central portion of the spring . the tube 26 includes a plurality of spaced apertures 28 for receiving adjusting pins 40 as will be discussed below . primarily for aesthetic reasons , a boot 30 surrounds the spring 24 and embraces the tube 26 . at the lower end , the boot 30 surrounds a ring 34 which is affixed to the base 20 , again by welding , and is releasably secured thereto by a plurality of fasteners 32 , such as snaps for heavy clothing , in which one part of the snap is secured to the ring 34 and the other part of the snap is secured to the boot 30 . a vertical handle 36 is telescopically received through the tube 26 and is provided with a plurality of holes 38 , spaced equally to the holes 28 of the tube 26 , for also receiving the tapered pins 40 . this structure provides for adjustment of the handle 36 with respect to the platform so that an upper cross member 42 is comfortably positioned with respect to the user . as is readily apparent from fig1 and 3 , particularly from the motion arrows 46 , 48 , 50 , 52 , 54 and 56 , a user may manipulate the handle 36 and the cross member 42 in three primary directions and , as is also evident , may combine such movements . it is also readily apparent that any movement of the handle is opposed by the spring and that resistive forces are therefore transmitted back through the arms and body of the user to his legs and feet . for added comfort and a better grip , the cross member 42 may be provided with a pair of hand grips 44 . the same basic structure discussed above , without the support platform 12 and the mat 18 , although the latter may be provided as a separate element , may be adapted for similar manipulations with the base 20 affixed to a wall such that the cross member 42 extends horizontally with respect to the floor and the movements 46 - 56 are similarly translated in direction . from the discussion above it is readily apparent that the pins 40 may be removed to release the handle 36 , 42 so that the same may be withdrawn from the tube 26 . in addition , the base 20 , which was previously discussed as being affixed to the platform 12 ( as by carriage bolts or the like ), may be hinged to the support 12 by a hinge 58 which is , for example , welded to the base 20 on one side of the hinge and secured by a plurality of bolts 60 on the other side of the hinge . at the opposte end , a pair of wing nuts may be provided , as illustrated in fig1 and 2 , in which each wing nut 62 comprises , for example , a countersunk carriage bolt 64 and a nut 66 for quick release and folding of the spring structure toward the support 12 . in this condition , and particularly with the handle 36 , 42 removed , the device is rendered more compact for storage . it is recognized that the exercise device of the present invention may serve a wide range of persons from children up to stronger and more serious body builders . therefore , the exercise device is readily adaptable to different strengths by providing that the base plate , spring , plate 25 and tube 26 be replaceable with similar structures which have different spring coefficients . this may be done by simply unlatching the wing nuts 62 and removing the bolts 30 , if the hinge structure is employed . otherwise , simple removal of a plurality of carriage bolts or the like accommodates such adaptive replacement . referring briefly to fig1 the mat 18 is now considered not to be fixed so that the same may pivot in accordance with the motion arrow 70 under the action of a pair of springs 86 which are affixed at their ends as indicated at 88 and 90 . it is readily apparent that movement of the handle in the direction 48 , for example , will translate into a complementary movement of the mat 18 . as best seen in fig3 and 4 , the mat 18 is carried on a plate 92 which has a thin metal plate 72 secured thereto , as by screws 76 . the platform 12 in this area includes a similar thin metal plate 74 which is attached thereto , as by screws 78 . the plate 74 includes an extension 82 which depends into a bore 84 which receives a pivot pin 80 which is connected to or integral with the plate 72 . a thin layer of synthetic material 100 , such as nylon or delrin is located between the plates 72 and 74 to reduce friction . as best seen in fig4 movements of the structure 18 , 92 with respect to the support 12 are resisted by at least one spring 86 which has a first end mounted in a groove of a grooved projection 94 extending from the support 12 . a similar spring mount is provided at the opposite end at a projection 96 which extends from the plate 92 . the projections 94 , 96 may advantageously be secured to the respective mounts by screws or the like for ease of assembly and disassembly . in order to protect a floor and provide friction relative thereto , the exercise device may also be provided with a plurality of feet 68 for all embodiments , including the wall - mounted embodiments where the mat 18 may be supported on a separate plate , similar to the plate 92 . as will be appreciated by those who are practicing fitness programs , such as aerobic dancing and jazzercize , rhythmic sequences of exercise may be performed with the present invention , particularly where the mat 18 is carried on a pivotal plate 92 . as an example of an exercise device which has been built and tested , the following components were used . ______________________________________reference material dimensions______________________________________12 structure wood ( o . s . b ) 32 &# 34 ; × 40 &# 34 ; × 3 / 4 &# 34 ; 18 rubber 18 &# 34 ; × 30 &# 34 ; 20 steel 16 &# 34 ; × 16 &# 34 ; × 3 / 16 &# 34 ; 24 steel 6 . 5 &# 34 ; o . d . × 18 &# 34 ; 25 steel 3 . 5 &# 34 ; o . d . × 3 / 16 &# 34 ; 30 vinyl 6 . 5 +&# 34 ; i . d . × 20 &# 34 ; 34 * steel 6 . 5 &# 34 ; o . d . 26 steel 11 / 4 &# 34 ; × 6 &# 34 ;, 11 gauge 36 * steel 1 &# 34 ; 30 &# 34 ;, 14 gauge 42 * steel 1 &# 34 ; × 32 &# 34 ;, 14 gauge44 rubber grip 8 &# 34 ; 68 rubber grommet 11 / 4 &# 34 ; × 11 / 4 &# 34 ; ______________________________________ * may be square , rectangular or round tube . although i have described my invention by reference to particular illustrative embodiments thereof , many changes and modifications of the invention may become apparent to those skilled in the art without departing from the spirit and scope of the invention . i therefore intend to include within the patent warranted hereon all such changes and modifications as may reasonably and properly be included within the scope of my contribution to the art .
an exercise device includes a spring mounted handle carried on a base . the base may be carried by a support platform which also supports the user , may be releasably connected to the platform , may be hinged at the platform , or may be secured to a wall . a spring which mounts the handle to the base is an elongate spring and the handle is t - shaped so that a user may manipulate the handle in a plane generally parallel to the base or in a plurality of planes extending through the point of attachment of the spring to the base , the spring constituting an energy storing device which stores energy upon the application of force and releases that energy upon removal of such force .