in referring to the drawings , and in particular fig1 there is shown the seat assembly 1 of this invention . it includes a seat 2 , upon which the user may rest , and it may be designed even in the configuration of the standard bicycle seat , in order to facilitate the user to posture himself / herself in a semi - standing position , while partially supported upon the stool of this invention . the stool includes a standard 3 , which is either hollow , or includes a bore 4 at its upper end , while the lower part of the standard 3 locates within a mounting sleeve 5 which is integrally secured within a base 6 . the base includes a series of radiating legs 7 , which at their outer ends each supports a caster 8 , to provide maneuverability and rollability to this stool , when used . the sleeve 5 threadedly engages a fastener 9 , incorporating its lever , as can be seen , and when the lever is pivoted in one direction , it becomes loosened from its binding engagement against the lower part of the standard 3 , and thereby allows the standard , and its supported seat 2 , to be raised or lowered , relative to the base . this is an adjustable feature that allows for the stool to be elevated , or lowered , to accommodate the size of the person utilizing the same . the seat 2 itself rigidly connects with a supporting rod 10 , as upon its underside , by means of the mounting sleeve 11 , as shown . secured to the seat rod 10 is a spring 12 , of a reasonable degree of resiliency , and is held in position at its upper end by means of a fastener , or a weld 13 , as shown . the bottom of the end extends into the upper bore 4 of the standard 3 , for some distance , so that it cannot be removed , except after being withdrawn for some distance . the upper end of the standard 3 includes a bearing surface 14 , and it is upon this surface that the bottom 15 of the spring rests , when the seat is mounted upon the standard . thus , as can be readily determined , the seat not only can swivel by means of its support rod , turning within the standard 3 , and it turns with some degree of friction , because the lower end of the spring , as at 15 , slides upon this upper bearing surface 14 of the standard 3 . obviously , the spring , at this position , or at the location of its bottom spiral , will flatten out , in order to furnish a bearinglike means for resting upon the surface 14 of the standard . hence , the seat can be swiveled , under this construction , to allow the user to pivot from side to side , as desired . as an alternative , the bottom of the spring 12 , may weld as at its bottom spiral 15 directly to the upper surface of the standard 3 , and in this connection , provides just a resilient amount of turning , against the bias of the spring , but the swivel provided herein is very limited , as can be understood , and is controlled by the strength of the attached spring . nevertheless , some slight amount of pivot may be obtained , while at the same time , the resiliency of the spring allows for slight upward and downward movement , due to its inherent resiliency . as can be understood , since the spring incorporates some degree of inherent resiliency , therefore , this allows the seat to be mounted in a cushioned manner , verticalwise , during application and usage by the user . [ 0020 ] fig3 discloses the locking feature between the standard 3 and the mounting sleeve 5 , as previously referred to , and it can be seen that the fastening means 9 includes a lever like portion 16 , which has integrally extending perpendicularly or laterally therefrom , a threaded fastener 17 which threads into a threaded bore 18 provided through the upper end of the mounting sleeve 5 , such that when the lever 16 is fully turned , the threaded member 17 engages against the surface of the lower end of the standard 3 , to fix the two components in position , once the seat has been adjusted , heightwise , to accommodate its user . in addition , the lower end or base 18 of the stool may be formed integrally , shaped into a tripod configuration , as can be seen through the various legs 19 , and support a series of casters 20 thereunder , for maneuverability . variations or modifications to the subject matter of this invention may occur to those skilled in the art upon reviewing the description of the preferred embodiment as provided herein . such variations , if within the spirit of this development , are intended to be encompassed within the scope of the invention as described herein . the description of the preferred embodiment is set forth herein for illustrative purposes only . a seat base , spring loaded in the rear , with a steel spring welded to a centrally located pole , top and bottom . the post inside the spring is separate , yet supports the seat for both pivotal and vertical displacement . a seat base with a gel - seat encapsulating it , to provide ultimate comfort and enable a person to be supported while standing . a steel , heavy - duty clamp to rotate into post mentioned in fig2 thereby securing the post at whatever height a person might need . the height can be adjusted between 32 ″ and 37 ″. a clamp to turn downward to loosen , adjust pole and seat accordingly , and to turn back up to secure pole .
a lightweight , rollable , spring biased , and swivable stool , resting upon a series of casters , allows a user to seat upon the seat portion of the stool , and yet maintain a semi - standing position , so as to maneuver the stool from side to side , circularly , and to provide spring bias cushioning , for a castered seat that accommodates the user in the semi - standing position .