reference will now be made in detail to presently preferred embodiments of the disclosure , one or more examples of which are illustrated in the accompanying drawings . each example is provided by way of explanation , not limitation , of the invention . in fact , it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope and spirit thereof . for instance , features illustrated or described as part of one embodiment may be used on another embodiment to yield a still further embodiment . thus , it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents . referring now to the figures , as shown in fig1 , an embodiment of an abdominal exercise device 10 in accordance with the present disclosure includes at least a first elongated member 20 a , a padded member 40 disposed thereabout , and an attachment assembly 50 for releasably securing exercise device 10 to a support surface , preferably padded , such as a mattress 12 ( fig5 and 6 ). additionally , as discussed in greater detail below , exercise device 10 may include additional elongated members 20 b , 20 c and 20 d , dependent upon the width of the support surface to which exercise device 10 is secured . referring additionally to fig2 a and 2b , and as noted above , various configurations of exercise device 10 may include multiple elongated members . as shown , first elongated member 20 a includes a first end 22 , a second end 24 , and an inner surface 28 that defines an elongated bore 26 . padded member 40 also includes an elongated bore 42 that is defined by an inner surface that is received adjacent an outer surface 30 of first elongated member 20 a . preferably , first elongated member 20 a is a cylindrical metal tube measuring 19 inches in length and having a 1 inch outer diameter . the 19 inch length for the elongated members is preferable in that when exercise device 10 is secured to a standard sized mattress 12 , as shown in fig5 and 6 , two elongated members can be used to span a twin , three sections to span a full or queen , and four sections to span a king . note , although the elongated members are preferably cylindrical , they may also be formed from tubes of varying cross - sectional shapes ( oval , rectangular , polygonal , etc .) and materials other than steel ( fiber reinforced plastic , fiberglass , etc .) that exhibit sufficient rigidity for the intended purpose . as shown , padded member 40 is preferably cylindrical , formed of a polymer foam material , has an outer diameter of 3½ inches , and an overall length of 19 inches that corresponds to the length of first elongated member 20 a . elongated bore 42 of padded member 40 is correspondingly shaped to the cross - sectional shape of first elongated member 20 a . additionally , the external cross - sectional shape of padded member 40 may be varied ( oval , rectangular , polygonal , etc .) in the configuration of exercise device 10 shown in fig2 a and 2b , at least a second elongated member 20 b is utilized . second elongated member 20 b differs only from first elongated member 20 a in that a connector stub 34 is received in its elongated bore 26 at its first end 22 . connector stub 34 is sized and configured such that a first portion 36 of connector stub 34 is received in elongated bore 26 of second elongated member 20 b in a press - fit . preferably , the press - fit of first portion 36 in elongated bore 26 is sufficient to prevent removal of connector stub 34 from second elongated member 20 b . however , dependent upon the materials used to construct connector stub 34 and the corresponding elongated member , first portion 36 of connector stub 34 may be further secured in the elongated bore 26 by welding , gluing , crimping , staking , etc . a second portion 38 of connector stub 34 is removably received in elongated bore 26 of first elongated member 20 a at its second end 24 in an interference fit . as such , first elongated member 20 a and second elongated member 20 b are selectively connectable by the user in the interference fit , thereby preventing their separation until an adequate amount of force in opposing axial directions is applied by the user . referring additionally to fig3 and 4 , attachment assembly 50 includes a strap 52 with a first end 54 and a second end 56 , and a buckle 58 with a first male portion 60 secured to first end 54 of strap 52 and a second female portion 62 attached to second end 56 of strap 52 . as shown in fig1 , male end 60 of buckle 58 is selectively removable from strap 52 . this is desirable in order to facilitate threading strap 52 through elongated bores 26 of the various elongated members 20 a , 20 b , 20 c and 20 d , that may be used in a specific configuration of abdominal exercise device 10 . after first end 54 of strap 52 has been threaded through the elongated bores of the elongated members , male end 60 is secured to strap 52 and the desired length of strap 52 may be adjusted by sliding one , or both , of first and second portions 60 and 62 along the length of strap 52 . preferably , strap 52 is comprised of nylon and is 18 feet in length and 1½ inches in width , whereas buckle 58 is constructed of plastic . alternate materials may be used for both the strap and the buckle . the length of strap 52 allows exercise device 10 to be used on mattresses 12 ( fig5 and 6 ) that range in size from a single up to a king . as shown , strap 52 is preferably passed under the box spring on which mattress 12 is supported to provide additional stability . as well , the length of strap 52 allows the user to position the strap around the bed frame on which mattress 12 and box spring are positioned if desired . strap 52 can be threaded through the corresponding elongated bores 26 either prior to ( fig4 ) or after ( fig3 ) the various elongated members 20 a , 20 b , 20 c and 20 d are secured to each other . note , attachment assembly 50 can also be used to attach the exercise device support surfaces other than bedding , for example , but not limited to , couches , lounge chairs , etc . as shown in fig7 a and 7b , in an alternate embodiment of abdominal exercise device 10 b , connector stub 34 as used with the first embodiment is replaced with a first portion 23 , or mounting stub , of second elongated member 20 b that is received in a second portion 25 , or mounting bore , of first elongated member 20 a . more specifically , exercise device 10 b differs from exercise device 10 a in that first portion 23 of second elongated member 20 b is formed integrally therewith rather than using a separate connector stub to connect the elongated members . in yet another alternate embodiment of abdominal exercise device 10 c , the various elongated members used may be assembled with a threaded connection . for example , as shown in fig8 a and 8b , second elongated member 20 b includes an externally threaded first portion 23 , or mounting stub , that is selectively connectable to an internally threaded second portion 25 , or mounting bore , of first elongated member 20 a . alternately , as shown in fig9 a and 9b , adjacent elongated members 20 a and 20 b can each include an externally threaded first portion 23 that is selectively engagable with an internally threaded mounting bore 72 of a threaded nut 70 . referring now to fig5 and 6 , exercise device 10 is shown secured to mattress 12 . more specifically , exercise device 10 is secured to a king size mattress 12 and , as such , four elongated members 20 a , 20 b , 20 c and 20 d have been coupled together such that the device spans the entire width of the mattress . note , however , fewer than four elongated members can be used if desired . to perform exercises , a user positions a portion of his body between the elongated members 20 a - 20 d and the mattress in order to anchor that portion of his body to the mattress . as shown in fig6 , the user has positioned both feet under the elongated members in order to perform abdominal exercises . note , however , the user may also position his head adjacent exercise device 10 and grasp elongated members 20 a - 20 d with his hands . in this manner , exercises such as leg lifts may be performed . when not in use , buckle 58 can be used to disconnect the first and second ends of strap 52 such that elongated members 20 a - 2 d can be positioned off to the side of mattress 12 to allow for its unencumbered use . alternately , the entire exercise device can be removed simply by removing strap 52 from between mattress 12 and its box spring . as shown in fig4 , elongated members 20 a - 20 d can be readily separated from each other while maintaining strap 52 positioned therethrough . this partial disassembly facilitates repositioning exercise device 10 on the mattress when desired , yet allows the device to be folded for easy storage , carrying in luggage , etc . while one or more preferred embodiments of the invention are described above , it should be appreciated by those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope and spirit thereof . for example , the cross - sectional shapes of the elongated members may be of any shape found to be suitable for the intended purpose . additionally , the components of the exercise device may be constructed of any material found to be suitable for the intended purpose . it is intended that the present invention cover such modifications and variations as come within the scope and spirit of the appended claims and their equivalents .
an exercise device for use with a support surface includes a first elongated member defining an elongated bore extending , a second elongated member defining an elongated bore extending , the first elongated member being removably secured to the second elongated member , and an attachment assembly configured to removable secure the first and second elongated members adjacent to the support surface . a user positions a portion of the user &# 39 ; s body between the first and second elongated members and the support surface , thereby securing the portion of the user &# 39 ; s body in a substantially stationary position .