the various embodiments of the present invention and their advantages are best understood by referring to fig1 through 7 of the drawings . the elements of the drawings are not necessarily to scale , emphasis instead being placed upon clearly illustrating the principles of the invention . throughout the drawings , like numerals are used for like and corresponding parts of the various drawings . this invention may be provided in other specific forms and embodiments without departing from the essential characteristics as described herein . the embodiments described above are to be considered in all aspects as illustrative only and not restrictive in any manner . the following claims rather than the foregoing description indicate the scope of the invention . fig1 depicts an exemplary stair safety apparatus 10 comprising a bar member 11 , a wrist band 13 , and an elastic or stretchable cord 15 connecting the bar member 11 and the wrist band 13 so the apparatus is worn around a user &# 39 ; s wrist . the bar member 11 comprises a rigid core with an outer surface of a high friction material , for example , rubber or similar polymeric substance . preferably , the outer surface further comprises a plurality of circumferential ribs 12 that lay roughly perpendicular to the longitudinal axis of the bar member 11 . the cord 15 may be a helical stretch cord , as depicted , or may be any suitable elastic line . fig2 through 4 illustrate the use of the stair safety apparatus 10 where the apparatus 10 , worn by a user 14 , is suspended between a stair rail 16 and the wall 18 to which the stair rail is mounted . if a user falls as he or she transits the stair way , the bar member 11 becomes wedged between the wall and the stair rail ( fig4 ), and the cord is pulled tight by the weight of the user . the friction between the outer surface of the bar member 11 and the wall helps to prevent the bar member 11 from disengaging from is wedged position . it will be appreciated that the bar member 11 should be long enough to engage both the wall and the stair rail , and the cord 15 should be long enough , in a stretched position , to prevent a user from toppling when a stumble occurs . with reference now to fig5 , an embodiment of the stair safety apparatus includes a hollow bar member 21 defining a chamber 22 in which is retained an alarm device 23 . the alarm device 23 may be connected to a line 25 having an end attached to the cord 15 . when a user falls and the cord 15 is pulled tight , the line 25 is also pulled and triggering activation of the alarm device 23 . an alai device 23 suitable for use in this embodiment is exemplified by the personal keychain alarm device model no . 51208 offered by general electric co . as shown in fig6 a & amp ; 6b , such an alarm device 23 may include a pin 27 attached to the line 25 , which is configured to activate an audible alarm when removed from the alarm device 23 , which occurs when the line is pulled along with the cord 15 when a user falls on the stairs as described above . in another embodiment , shown with reference to fig7 a and 7b , the bar member 31 comprises two pieces 33 a , b , wherein a first piece 33 a is formed to include a boss 35 . the second piece 33 b is formed with a chamber 32 for receiving the boss 35 . in this way , the bar member 31 may be separated into pieces for convenient storage and re - attached for use . as described above and shown in the associated drawings , the present invention comprises a stair safety apparatus . while particular embodiments of the invention have been described , it will be understood , however , that the invention is not limited thereto , since modifications may be made by those skilled in the art , particularly in light of the foregoing teachings . it is , therefore , contemplated by the appended claims to cover any such modifications that incorporate those features or those improvements that embody the spirit and scope of the present invention .
a stair safety apparatus includes a wrist with an elastic cord attachë at one end to said band . a bar member attached by one end to a second end of the elastic cord . the bar member is of a length sufficient to allow the bar member to become wedged between a wall - mounted stair rail and a wall .