Abstract:
One embodiment of an exercise device placed on top of a door ( 122 ) and of the type having an elongated body ( 102 ) which has a half circular profile. A base sheet ( 106 ) is attached to the base surface ( 104 ) of the elongated body ( 102 ) and a top sheet ( 108 ) is attached to the curved surface ( 100 ) of the elongated body ( 102 ) such that it drapes past both long edges of the elongated body ( 102 ). A primary end sheet ( 112 ) is attached to one end of the elongated body ( 102 ). The user places the exercise device on the top of a door with the base sheet ( 106 ) contacting the door and the primary end sheet ( 112 ) contacting the upper sill ( 118 ). The user ( 120 ) grabs the top sheet ( 108 ) in the area of the curved surface ( 100 ) and performs a pull-up or hangs freely.

Description:
BACKGROUND 
     From time to time, people may perform various physical exercises. Pull-ups are one exercise a person might perform to help strengthen the upper body. Pull-ups may involve a person grabbing some sort of implement overhead with both hands. The person may then pull their chin up to the tops of their hands. Then the person may straighten their arms to lower their body. This may be repeated as many times as desired. 
    
    
     
       DRAWING DESCRIPTION 
         FIG. 1  is a perspective view of the exercise device in accordance with one embodiment. 
         FIG. 2  is an enlarged fragmentary view showing one end of  FIG. 1 . 
         FIG. 3  is a top orthographic view of the exercise device of  FIG. 1  showing the angle of one end. 
         FIG. 4  is an enlarged fragmentary view showing one end of  FIG. 3 . 
         FIG. 5  is a perspective view of a variation of one part of the exercise device. 
         FIG. 6  is a perspective view of another variation of one part of the exercise device. 
         FIG. 7  is a perspective view of an additional variation of one part of the exercise device. 
         FIG. 8  is a perspective view of another variation of one part of the exercise device. 
         FIG. 9  is a perspective view of the exercise device of  FIG. 1  shown installed on a door. 
         FIG. 10  is a top orthographic view of the exercise device of  FIG. 1  shown installed on a door. 
         FIG. 11  is a perspective view of another embodiment of the exercise device. 
         FIG. 12  is a partial top orthographic view of the exercise device in  FIG. 11  shown installed on a door. 
         FIG. 13  is a side orthographic view of the exercise device of  FIG. 11 . 
         FIG. 14  is a perspective view of the exercise device shown installed on a door in accordance with an additional embodiment. 
         FIG. 15  is a top orthographic view of the exercise device of  FIG. 14  shown installed on a door. 
         FIG. 16  is a perspective view of the exercise device shown installed on a door in accordance with another additional embodiment. 
         FIG. 17  is a perspective view of the exercise device from  FIG. 16  shown installed on a door that is hinged on the opposite side from the door in  FIG. 16 . 
         FIG. 18  is a top perspective view of the exercise device from  FIG. 16 . 
     
    
    
     DRAWINGS 
     Reference Numerals 
     
       
         
               
               
             
           
               
                   
               
             
             
               
                 20 
                 exercise device 
               
               
                 100 
                 curved surface 
               
               
                 102  
                 elongated body 
               
               
                 104 
                 base surface 
               
               
                 106 
                 base sheet 
               
               
                 108 
                 top sheet 
               
               
                 110  
                 primary end 
               
               
                 112 
                 primary end sheet 
               
               
                 114  
                 secondary end 
               
               
                 116 
                 doorway 
               
               
                 118 
                 upper sill 
               
               
                 120 
                 user 
               
               
                 122  
                 door 
               
               
                 150 
                 flat surfaces 
               
               
                 152 
                 small surfaces 
               
               
                 154 
                 planar surfaces 
               
               
                 156 
                 lesser surfaces 
               
               
                 200 
                 elongated member sheet 
               
               
                 202  
                 elongated member 
               
               
                 204 
                 mating surface 
               
               
                 206  
                 far surface 
               
               
                 208 
                 bottom surface 
               
               
                 300  
                 secondary end sheet 
               
               
                 302 
                 opposite hinged door 
               
               
                   
               
             
          
         
       
     
     DETAILED DESCRIPTION 
     FIGS.  1 - 8   
     First Embodiment 
     One embodiment of the exercise device  20  is illustrated in  FIGS. 1-4 . The exercise device  20  has an elongated body  102 . The elongated body  102  is a long straight body extruded with a small profile. The small profile is a generally curved edge connected to a generally straight edge. The elongated body  102  has a primary end  110 . The primary end  110  is cut at approximately a 45° angle to the small profile. The primary end  110  to small profile angle could be 5° to 90°. Also, the primary end  110  is approximately normal to a base surface  104  of the elongated body  102 . Further, the elongated body  102  has a secondary end  114 . The secondary end  114  is cut approximately parallel to the small profile. The secondary end  114  to small profile angle could be 5° to 90°. Also, the secondary end  114  is approximately normal to the base surface  104 . A base sheet  106  is fastened to the base surface  104  of the elongated body  102 . The base sheet  106  covers approximately the entire base surface  104 . A top sheet  108  is fastened to a curved surface  100  on the elongated body  102 . The top sheet  108  approximately covers the entire curved surface  100 . The top sheet  108  could cover part of the curved surface  100 . Also, the top sheet  108  extends beyond the curved surface  100  on the long edges by approximately 1.5 inches. The top sheet  108  could extend beyond the curved surface  100  on the long edges by 0.25, 0.5, 1, 1.5, 2, and 3 inches. The top sheet  108  could extend beyond the curved surface  100  on the long edges from 0 to 10 inches. A primary end sheet  112  is fastened to the primary end  110  of the elongated body  102 . The primary end sheet  112  has an approximate profile that matches the profile of the primary end  110  when fastened thereon. 
     In this embodiment, the elongated body  102  is a half cylinder. A standard 1½ inch diameter wood dowel approximately 2 feet long is cut in half lengthwise to fabricate the half cylinder. The actual diameter of a standard 1½ inch diameter wood dowel is approximately 1⅜ inches. However, the elongated body  102  can be comprised of any stiff material. The stiff material could be, but not limited to: a metal or metal alloy, a ceramic, a porous ceramic, a composite, wood, or plastic. The metal or metal alloy could be, but not limited to: cast iron, low alloy steel, high alloy steel, brass, aluminum, titanium, zinc, and magnesium. Metal fabrication can be, but not limited to, die casting, extruding, and machining. The ceramic could be, but not limited to: silicon, alumina, and zirconia. The porous ceramic could be, but not limited to: concrete, brick, glass, and porcelain. The composite could be, but not limited to: carbon-fiber reinforced plastic and glass-fiber reinforced plastic. The wood could be, but not limited to: pine, oak, maple, oak, medium-density fiberboard (MDF), balsa, poplar, and cedar. The plastic could be, but not limited to: acrylonitrile butadiene styrene (ABS), polycarbonate, nylon, polyethylene terephthalate (PET), and polyethylene. Plastic fabrication can be, but not limited to, injection molding, extruding, and machining. 
     The base sheet  106  is fastened to the elongated body  102  with a cyanoacrylate ester. The cyanoacrylate ester is spread over the entire area of the base sheet  106  that contacts the base surface  104 . Similarly, the top sheet  108  and the primary end sheet  112  are fastened to their respective surfaces with a cyanoacrylate ester spread over their respective areas that contact their respective surfaces on the elongated body  102 . However, the base sheet  106 , the top sheet  108 , and the primary end sheet  112  could also be fastened by various glues, adhesives or epoxies, staples, nails, snaps, tongue and groove, hook and loop fasteners, etc. 
     The base sheet  106 , the top sheet  108  and the primary end sheet  112  are comprised of rubber sheet approximately 1/16 inches thick. The base sheet  106 , the top sheet  108  and the primary end sheet  112  could be 1/32, ⅛, ¼, ⅜, or ½ inches thick. The base sheet  106 , the top sheet  108  and the primary end sheet  112  could be 1/64 to ¾ inches thick. However, the base sheet  106 , top sheet  108 , and primary end sheet  112  could also be comprised of any flexible sheeting. This flexible sheeting could be an open cell sheet material, a closed cell sheet material, a solid rubber sheet material, plastic sheet, or cork. Some open cell sheet materials are, but not limited to: polyether, polyester, high density urethane. Some closed cell sheet materials are, but not limited to: silicone, nitrile, viton. Some solid rubber plastic sheet materials are, but not limited to: neoprene, butyl, flourosilicone. One type of flexible plastic sheet could be vinyl. The base sheet  106 , top sheet  108 , and primary end sheet  112  could also be comprised of textile cloth made from wool, cotton, nylon, polyester, or other materials. The top sheet  108  could be comprised of a stiff material shaped as an upside down “U”. The stiff material version of the top sheet  108  would fit snugly over the curved surface  100 . The stiff material could be, but not limited to, any of the stiff materials listed previously in the first embodiment. The base sheet  106  and/or top sheet  108  could be co-extruded with the elongated body  102 . The base sheet  106 , top sheet  108 , and/or primary end sheet  112  could be formed with the elongated body  102  as one piece with a two shot mold. 
     The width of the small profile of the elongated body  102  could also be approximately 1⅜ inches, 1¾ inches, 10 millimeters, 35 millimeters, 40 millimeters, 45 millimeters, 50 millimeters, 70 millimeters, or 90 millimeters. The width of the small profile of the elongated body  102  could range from 10 to 90 millimeters. The width of the small profile of the elongated body  102  should be approximately equal to the thickness of a door  112 . Different doors  112  can have different thicknesses. The height of the small profile of the elongated body  102  could also be approximately 11/16 inches, ⅞ inches, 5 millimeters, 17.5 millimeters, 20 millimeters, 22.5 millimeters, 25 millimeters, 35 millimeters, or 45 millimeters. The height of the small profile of the elongated body  102  could range from 5 millimeters to 45 millimeters. The proportion of width to height of the small profile of the elongated body  102  could be approximately 0.29, ½, ¾, 1, 2, 4, 6, 10, 14, or 18. The proportion of width to height of the small profile of the elongated body  102  could range from 0.29 to 18. The length of the elongated body  102  could be approximately 12, 18, 24, 30, 36, 42, 48, 54, or 60 inches. The length of the elongated body  102  could range from 12 to 60 inches. 
     The curved surface  100  can be comprised of 5 flat surfaces  150  ( FIG. 5 ). Five equal length straight lines replace the generally curved edge on the small profile. The five equal length straight lines are connected at their ends. The ends of the five equal length lines are on the replaced generally curved edge. The small profile is extruded. The five equal length straight lines on the extruded profile become the 5 flat surfaces  150 . The curved surface  100  can also be comprised of 2, 3, 4, 10, 20, 50, 100, 500, or 1000 flat surfaces  150 . The curved surface  100  can be comprised of a range of flat surfaces  150  from 2 to 1000. The equal length straight lines replacing the generally curved edge could be unequal lengths. The flat surfaces  150  comprising the curved surface  100  could also have curvature. 
     The curved surface  100  can be comprised of 10 small surfaces  152  ( FIG. 6 ). The small surfaces  152  join at their edges to form a contiguous surface. The small surfaces  152  are flat. The small profile has 6 generally straight edges. The first edge is vertical. The second edge starts at the top of the first edge. The second edge runs up and to the right. The second edge is about 45 degrees from horizontal. The third edge starts at the upper right end of the second edge. The third edge runs approximately horizontal to the right. The fourth edge starts at the right end of the third edge. The fourth edge runs down and to the right. The fourth edge is approximately 45 degrees from horizontal. The fifth edge starts at the lower right end of the fourth edge. The fifth edge runs down. The fifth edge is approximately vertical. The sixth edge starts at the lower end of the fifth edge. The sixth edge runs horizontally to the left. The sixth edge terminates at the lower end of the first edge. The first, second, third, fourth, and fifth edges are approximately equal in length. 
     The small profile is extruded. As the profile extrudes, the first, second, third, fourth, and fifth edges linearly scale up through half the length of the pull-up device  20 . At this point, the first, second, third, fourth, and fifth edges of the extruded small profile has formed 5 out of 10 small surfaces  152 . As the profile extrusion continues to the end of the pull-up device  20 , the first, second, third, fourth, and fifth edges linearly scale down. Now, the first, second, third, fourth, and fifth edges of the extruded small profile has formed the remaining 5 small surfaces  152 . 
     The shape and size at the beginning and end of the extruded small profile are approximately the same. The height and width at the beginning and end of the extruded small profile can be the same values listed before for the small profile. The height and width at the midpoint of the extruded small profile can be 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 percent greater than at the beginning or end of the extruded small profile. The height and width at the midpoint of the extruded small profile can range from 0.5 to 1000 percent greater than the beginning or end of the extruded small profile. The height at the midpoint of the extruded small profile can be 0.1, 0.2, 0.3, 0.5, 1, 2, 3, 4, 5, and 10 inches greater than the height at the beginning or end of the extruded small profile. The height at the midpoint of the extruded small profile can range from 0.005 to 10 inches greater than the height at the beginning or end of the extruded small profile. The width at the midpoint of the extruded small profile can be 0.1, 0.2, 0.3, 0.5, 1, 2, 3, 4, 5, and 10 inches greater than the width at the beginning or end of the extruded small profile. The width at the midpoint of the extruded small profile can range from 0.005 to 10 inches greater than the width at the beginning or end of the extruded small profile. 
     Additionally, the curved surface  100  can be comprised of varying numbers, shapes, and sizes of small surfaces  152 . The curved surface  100  can be comprised of 2, 3, 4, 5, 10, 15, 20, 25, 50, 100, 1000, or 10,000 small surfaces  152 . The curved surface  100  can be comprised of 2 to 50,000 small surfaces  152 . The small surfaces  152  can have curvature. The edges of the small surfaces  152  can have curvature. Each small surface  152  can have 3, 4, 5, 6, 8, 10, 15, 20, 50, 100, 1000, or 5000 edges. Each small surface  152  can have 3 to 10,000 edges. A number of small surfaces  152 , each with their own number of edges and curvature can comprise the curved surface  100 . 
     The base surface  104  can be comprised of 5 planar surfaces  154  ( FIG. 7 ). Five equal length straight lines replace the generally straight edge on the small profile. The five equal length straight lines are connected at their ends. The first equal length straight line starts on the left end of the generally curved edge. The first equal length straight line forms to the right approximately 15 degrees above the horizontal. The second equal length straight line starts at the right end of the first equal length straight line. The second equal length straight line forms to the right approximately 7 degrees above the horizontal. The third equal length straight line starts at the right end of the second equal length straight line. The third equal length straight line forms horizontally to the right. The fourth equal length straight line starts at the right end of the third equal length straight line. The fourth equal length straight line forms to the right approximately 7 degrees below the horizontal. The fifth equal length straight line starts at the right end of the fourth equal length straight line. The fifth equal length straight line forms to the right approximately 15 degrees below the horizontal. The fifth equal length straight line ends on the right end of the generally curved edge. The small profile is extruded. The five equal length straight lines on the extruded profile become the 5 planar surfaces  154 . The base surface  104  can also be comprised of 2, 3, 4, 10, 20, 50, 100, 500, or 1000 planar surfaces  154 . The base surface  104  can be comprised of a range of planar surfaces  154  from 2 to 1000. The equal length straight lines replacing the generally curved edge could be unequal lengths. The planar surfaces comprising the base surface  104  could also have curvature. 
     The base surface  104  can be comprised of 10 lesser surfaces  156  ( FIG. 8 ). The lesser surfaces  156  join at their edges to form a contiguous surface. The lesser surfaces  156  are flat. The small profile has 5 generally straight edges connected to the generally curved edge. The first straight edge starts on the left end of the generally curved edge. The first straight edge forms up and to the right. The first straight edge is approximately 15 degrees above the horizontal. The second straight edge starts at the right end of the first straight edge. The second straight edge runs up and to the right. The second straight edge is approximately 7 degrees above horizontal. The third straight edge starts at the right end of the second straight edge. The third straight edge runs approximately horizontal to the right. The fourth straight edge starts at the right end of the third straight edge. The fourth straight edge runs down and to the right. The fourth straight edge is approximately 7 degrees below horizontal. The fifth straight edge starts at the right end of the fourth straight edge. The fifth straight edge runs down and to the right. The fifth edge is approximately 15 degrees below horizontal. The fifth straight edge ends at the right end of the generally curved edge. The first, second, third, fourth, and fifth straight edges are approximately equal in length. 
     The small profile is extruded. As the profile extrudes, the first, second, third, fourth, and fifth straight edges linearly scale up vertically through half the length of the pull-up device  20 . At this point, the extruded small profile has formed 5 out of 10 lesser surfaces  156 . As the profile extrusion continues to the end of the pull-up device  20 , the first, second, third, fourth, and fifth straight edges linearly scale down vertically. Now, the extruded small profile has formed the remaining 5 lesser surfaces  156 . 
     The shape and size at the beginning and end of the extruded small profile are approximately the same. The height and width at the beginning and end of the extruded small profile can be the same values listed before for the small profile. The height of the third straight edge from the bottom of the small profile at the midpoint of the extruded small profile can be 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 percent greater than at the beginning or end of the extruded small profile. The height of the third straight edge from the bottom of the small profile at the midpoint of the extruded small profile can range from 0.5 to 1000 percent greater than at the beginning or end of the extruded small profile. The height of the third straight edge from the bottom of the small profile at the midpoint of the extruded small profile can be 0.1, 0.2, 0.3, 0.5, 1, 2, 3, 4, 5, and 10 inches greater than the height at the beginning or end of the extruded small profile. The height of the third straight edge from the bottom of the small profile at the midpoint of the extruded small profile can range from 0.005 to 10 inches greater than the height at the beginning or end of the extruded small profile. The first, second, third, fourth, and fifth straight edges are always below the generally curved edge. 
     Additionally, the base surface  104  can be comprised of varying numbers, shapes, and sizes of lesser surfaces  156 . The base surface  104  can be comprised of 2, 3, 4, 5, 10, 15, 20, 25, 50, 100, 1000, or 10,000 lesser surfaces  156 . The base surface  104  can be comprised of 2 to 50,000 lesser surfaces  156 . The lesser surfaces  156  can have curvature. The edges of the lesser surfaces  156  can have curvature. Each lesser surface  156  can have 3, 4, 5, 6, 8, 10, 15, 20, 50, 100, 1000, or 5000 edges. Each lesser surface  156  can have 3 to 10,000 edges. A number of lesser surfaces  156 , each with their own number of edges and curvature can comprise the base surface  104 . 
     The primary end  110  and the secondary end  114  can be composed of multiple surfaces. These surfaces can be flat or curved. 
     Operation— FIGS. 9 and 10   
     The exercise device  20  is assembled on top of the partially open door  122 . Approximately all of the base sheet  106  contacts the top of the door  122 . The overhanging parts of the top sheet  108  hang off on either side of the door  122 . The door  122  is attached to a doorway  116 . The primary end sheet  112  is flush with an upper sill  118  of the doorway  116 . 
     The user  120  grips the area of the top sheet  108  that is directly fastened to the curved surface  100 . The user  120  can entirely support their weight with their hands. Then, the user  120  pulls themselves up until the user&#39;s  120  chin is above the exercise device  20 . Then the user  120  straightens his or her arms to hang from the exercise device  20 . This can be repeated multiple times. The user  120  can also just hang from the exercise device  20 . 
     FIGS.  11 - 18   
     Additional Embodiments 
     Additional embodiments are shown in  FIGS. 11-13 ,  FIGS. 14-15 , and  FIGS. 16-18 . 
     A second embodiment in  FIGS. 11-13  is the same of the first embodiment except for the following differences. The primary end sheet  112  is replaced with an elongated member  202  and an elongated member sheet  200 . The elongated member  202 , which is approximately 4¾×0.75×0.65 inches, is fastened to the primary end with wood glue. A mating surface  204  on the elongated member  202  is approximately centered on the primary end  110  lengthwise. The bottom surface  208  on the elongated member  202  is approximately flush with the base surface  104  of the elongated body  102 . The elongated member sheet  200  is fastened with a cyanoacrylate ester to a far surface  206  of the elongated member  202 . The elongated member sheet  200  approximately covers all of the far surface  206 . 
     In this embodiment, the elongated member  202  is comprised of wood. However, the elongated member  202  can be comprised of any stiff material. Some stiff materials are listed in the first embodiment. The elongated member sheet  200  could also be fastened by glues, adhesives or epoxies, staples, nails, snaps, tongue and groove, hook and loop fasteners, etc. The elongated member sheet  200  is comprised of rubber sheet approximately 1/16 inches thick. However, the elongated member sheet  200  could also be comprised of, but not limited to, any material listed for the top sheet  108  in the first embodiment. The elongated member sheet  200  could range in thickness from 1/32 to ½ inches. 
     Operation is the same as the first embodiment except that the elongated member sheet  200  is flush with the upper sill  118  instead of the primary end sheet  112 . 
     A third embodiment in  FIGS. 14-15  is the same as the first embodiment except the primary end  110  is cut approximately parallel to the small profile of the elongated body  102 . Also the primary end  110  is approximately normal to the base surface  106 . 
     Operation is the same as the first embodiment. 
     A fourth embodiment in  FIGS. 16-18  is the same as the first embodiment except for the following differences. The secondary end  114  of the elongated body  102  is cut at approximately a 45° angle to the small profile of the elongated body  102 . The primary end  110  and secondary end  114  are approximately normal to each other. The secondary end  114  is approximately normal to the base surface  104  of the elongated body  102 . A secondary end sheet  300  is fastened using a cyanoacrylate ester to the secondary end  114 . The secondary end sheet  300  approximately covers the secondary end  114 . The secondary end sheet  300  could also be fastened by glues, adhesives or epoxies, staples, nails, snaps, tongue and groove, hook and loop fasteners, etc. The secondary end sheet  300  is comprised of, but not limited to, any material listed for the top sheet  108  in the first embodiment. The secondary end sheet  300  could range in thickness from 1/32 to ½ inches. 
     This embodiment operates the same as the first embodiment as shown in  FIG. 16 . In addition, this embodiment may operate on an opposite hinged door  302  as shown in  FIG. 17 . This operation is the same as the first embodiment except that the secondary end sheet  300  is flush against the upper sill  118  instead of the primary end sheet  112 . 
     A fifth embodiment (not shown) is the same as the fourth embodiment except with both the primary end sheet  112  and secondary end sheet  300  replaced with an elongated member  202  and elongated member sheet  200 . The primary end sheet  112  and secondary end sheet  300  are replaced in the same manner that the primary end sheet  112  is replaced with an elongated member  202  and elongated member sheet  202  in the second embodiment. 
     Operation is identical to the fourth embodiment except that the elongated member sheet  200  is flush with the upper sill  118  instead of the primary end sheet  112  or the secondary end sheet  114 . 
     CONCLUSION, RAMIFICATIONS, AND SCOPE 
     In general regarding the exercise device  20 , it may be desirable:
         to use common materials and few parts for easier sourcing and manufacturing. The first embodiment has four parts (elongated body  102 , top sheet  108 , base sheet  106 , and primary end sheet  112 ) and cyanoacrylate ester. The elongated body  102  comprises a wood dowel cut in half. The top sheet  108 , base sheet  106 , and primary end sheet  112  comprises a rubber sheet. Typically, wood dowels, rubber sheets, and cyanoacrylate ester are all commonly available.   to cause very little wear to the supporting structure of the exercise device  20 . In all embodiments, rubber sheeting covers any part of the exercise device  20  that contacts the door  122  or top sill  118 . Rubber sheeting is a soft material. The door  122  is typically wood or metal. Both of these materials are much harder than rubber sheeting. The top sill  118  is typically wood which is much harder than rubber sheeting. If a soft and hard material rub against each other, most of the wear occurs on the soft material. Since the rubber sheeting is the soft material, it will incur must of the wear. Given this, the rubber sheet will still wear slowly. Additionally, there is little to no rubbing between the exercise device  20  and the support structure. Since rubbing causes wear, there is very little wear in general between the exercise device  20  and the supporting structure.   to quickly and easily install a device. It takes approximately 10 to 20 seconds to place the exercise device  20  on top of an open door  20 . It takes approximately another 5 to 10 seconds to slide the exercise device  20  along the top of the door  20  such that the primary end sheet  112 , secondary end sheet  300 , or elongated member sheet  200  entirely contacts the upper sill  118 . Therefore, installation takes approximately 15 to 30 seconds. This is typically a short amount of time to install a device. Installation comprises two coarse linear actions of placing the exercise device  20  on top of the door  122  and sliding the exercise device  20  along the top of the door  122 . Generally, coarse actions and few steps make procedures easier.   to quickly and easily un-install a device. It takes approximately 10 to 20 seconds to pull the exercise device  20  off the top of the door  122 . Therefore, it takes approximately 10 to 20 seconds to un-install the exercise device  20 . This is typically a short amount of time to un-install an exercise device. Installation comprises one coarse linear action of moving the exercise device  20  up off the top of the door  122 . Generally, coarse actions and few steps make procedures easy.   to allow minimal movement of the support structure of the exercise device  20 . The primary end sheet  112 , secondary end sheet  300 , or elongated member sheet  200  of the exercise device  20  is up against the upper sill  118 . The user&#39;s  120  weight keeps the exercise device  20  from sliding on the door  122 . Therefore, the primary end sheet  112 , secondary end sheet  300  or elongated member sheet  200  surface touching the upper sill  118  will allow approximately 2 to 5° maximum movement of the door while the user&#39;s  120  weight is on the exercise device  20 .   to promote avoidance of pinch points for the user  120 . The top sheet  108  that overhangs the curved surface  100  of the exercise device  20  on both long ends covers the mating surface gap between the door  122  and exercise device  20 . Therefore, as long as the top sheet  108  overhangs the door  122 , the user  120  will avoid pinching their hands between the exercise device  20  and the door  122  while hanging or performing pull-ups.   to promote easy storage of a device. The first embodiment is approximately 1½×¾×24 inches. This is a long thin form that can lean in the corner of a closet. It is typically an easy action to place the exercise device  20  in the corner of a closet.   to promote easy transportation of a device. The first embodiment is approximately 1½×¾×24 inches. Any suit case or backpack which has an internal pocket 24 inches or longer would accommodate the exercise device. The exercise device  20  would fill a small area of the suit case or backback since the other dimensions of 1½ inches×¾ inches would be small relative to the suitcase or backpack. The first embodiment weights approximately 1 to 2 pounds. This small amount of weight would be easier for the user  120  to carry.       

     Although the description above contains many specificities, these should not be construed as limiting the scope of the embodiments but as merely providing illustrations of several embodiments. Additionally, although the embodiments are numbered, this does not indicate any preference for any one of them over the other. 
     Thus the scope of the embodiments should be determined by the appended claims and their legal equivalents, rather than by the examples given.