Dismountable gymnastic device formed as a horizontal bar having a bayonet-closure feature
United States Patent Eichenauer 1 1 Apr. 8, 1975 [541 DISMOUNTABLE GYMNASTIC DEVICE 1.116.229 11/1914 Boone 272/62 H IZ NTAL BA HAVNG 1.538.272 5/1925 Cook 72/62 t g g 1.646.158 10/1927 McWhirtcr. 272/61 2.192.038 2/1940 Hansen 11/123 [76] Inventor: Otto Eichenauer, Kuhlendahler 2.368.459 1/1945 Ensor 272/6l Strasse 97 5 0 Tonishcide/Rhid. 2.907.591 10/1959 Gulick 285/361 X Gmmuny 3.233.894 2/1966 Binun 272/61 22 F] d: N 9,1972 1 e M Primary E.\&#39;uminerAnton O. Oechsle 1 1 PP N011 3041899 Assistant Examiner-11. T. Stouffer 3 F A l 0] orelgn ppllcatlon Priority Data ABSTRACT Nov. 17. 1971 Germany 2156982 Feb. 24. 1972 Germany 2208744 A dismountable gymnastic device formed as a horizontal bar, which comprises a bow including a hori- [52] US. Cl 272/62; 403/349 zontal bar and a member for holding the bar. A ccn- [51] Int. Cl A63b l/02 tral plug pin is disposed on the bow and enters into the [581 Field of Search 272/60 R, 61. 62; 211/123, holding member in a vertical plug connection. The  
  211/124; 285/361, 396, 402 central plug pin is also coordinated to a bayonetclosure connection and the connection includes es- [561 References Cited cape recesses extending in the upward direction. UNITED STATES PATENTS 2 C 0 10 D 74.683 2/1868 Hall 272/61 raw&#39;ng gums PATENTED FR 81975 Fig. 10  
 ; DISMOUNTABLE GYMNASTIC DEVICE FORMED AS A HORIZONTAL BAR HAVING A BAYONET-CLOSURE FEATURE The present invention relates to a dismountable gymnastic device of the type of a horizontal bar.  
  It is known in particular-for gymnastic purposes for the home use to secure horizontal bars for example in a specially created gymnastic room or the like with two vertical columns standing parallel to each other. Often the horizontal bar is also provided in door openings between the arms of the frame. Such devices require however mostly, that they are to be taken apart after their use, in&#39;order not to create disturbing obstacles. This and also the structure of .such gymnastic devices is cumbersome to be produced, so that they are not used frequently for this reason.  
  It is one object of the present invention to provide a gymnastic device, which is to be set up in the simplest manner and again later on being dismounted, such, that upon occurring loads on the gymnastic device, aside from its own weight, a dismounting is impossible.  
  Due to such design a gymnastic device is created, the securing of which is performed fast and simply by means of a plug connection. For this purpose the plug pin of the bow of the horizontal bar is merely vertically to be inserted at a preferred point of a room ceiling or the like by sliding into a holding part. The holding part and the plug pin enter then, caused by the advantageous design. after a part rotation of the plug pin and a following upward movement thereof into a bayonet closing connection relative to each other. Limited is the downward movement of the plug pin, by the bayonet connection yielding recesses extending in upward direction. The own weight of.the bow of the horizontal bar retains the latter in its use position. If, however, a person exercising on the bow of the horizontal bar presents an additional load, the bayonet closure connection stabilizes itself such that an automatic release thereof is impossible. The release of the bayonet closure connection can take place only upon unloaded horizontal bar bow, which is then to be moved into the holding part in vertical direction and then performs a return rotation in the amount of the part angle. Thereafter the plug pin is removable from the holding part. This prescribed simple coordination as dismounting brings about the advantage, that the gymnastic device is used more often. Due to the bow of the horizontal bar secured at the ceiling of the room. gymnastic exercises considering holding damages can be performed. Depending upon the length of the plug pin the height of the horizontally disposed rod of the bow of the horizontal bar can be determined, so that also children can perform on the latter some exercises. The bayonet slots in the plug pin on the one hand and the bayonet closurepin crossing the bearing bore of a filling member disposed in the holding part housing, on the other hand, realize a simple structure of the gymnastic device of the present invention and thereby low production costs. By the arrangement of the bayonet closure pin in the upper ring of an axial pressure bearing disposed in the half-part housing a rotation of the bow of the horizontal bar can be performed about its axle formed by the plug pin. In order to assure, inspite of the rotatable arrangement of the bayonet closure pin, the easy mounting of the bow of the horizontal bar, the pressure bearing can be arranged by example between two rings, of which the lower one is compressible and the upper one is effective as a brake ring such, that upon loading the bow of the horizontal bar, due to the compressed lowering, by a slide axial displacement of the axial pressure bearing the free rotability of the upper ring is not interfered with by the brake ring. The holding part housing is to be secured to a ceiling such, that the possible strains do not lead to a release of the holding part. For this purpose the holding part housing forms either a screw flange mounted on the ceiling or by wall anchors entering the ceiling or the like.  
  These and other objects in view, which will become apparent in the following detailed description, the present invention, which is shown by example only will be clearly understood in connection with the accompanying drawings, in which:  
  FIG. 1 is an elevation of the gymnastic device secured to the ceiling of a room in accordance with the first embodiment of the present invention;  
  FIG. 2 is a top-plan view of the device as disclosed in FIG. 1;  
  FIG. 3 is a longitudinal section of a holding part equipped with a screw flange prior to the insertion of the plug;  
  FIG. 4 is a longitudinal section corresponding with the showing of FIG. 3, however with inserted plug pin;  
  FIG. 5 is a longitudinal section through the holding part housing disclosing a second embodiment with unloaded bow of the horizontal bar;  
  FIG. 6 is the holding part with an axial section of the holding part housing with loading of the bow of the horizontal bar;  
  FIG. 7 is an elevation of the holding part housing constituting an equipment for wall anchors:  
 FIG. 8 is a top plan view of the showing in FIG. 7;  
  FIG. 9 is a top plan view of a holding part housing to be inserted into the ceiling and equipped with wall anchors; and  
 FIG. 10 is a top plan view of the showing in FIG. 9.  
  Referring now to the drawing, the dismountable gymnastics device has a holding part 2 to be secured to a ceiling l ofa room as well as a triangular bow 3 including a horizontal bar entering with the holding part 2 into a plug connection. The bow 3 is designed such that one arm 4 is disposed horizontally. From the carrying point of the two other arms 5 and 6 extends a vertical plug pin 7 of tubular cross sections.  
  The plug-in pin 7 is equipped with diametrically oppositely disposed bayonet-slots extending from the free end of the plug pin axially to the latter. A cross slot 9 follows in one direction, which cross slot continues into an upwardly directed bayonet closure escape recess 10.  
  The holding part housing 11, in accordance with the first embodiment, following FIGS. 1 to 4, carries a filling piece 12 consisting preferably of polyamide. The latter is adjusted to the step-shaped arrangement of the holding part housing 11, such, that the filling piece 12 supports itself with its shoulder 12&#39; on the step 11&#39; of the housing II. In the filling piece 12 sits a bayonet pin 14 crossing its bearing bore 13. The bearing bore 13 is flush with a bottom side opening 15 of the holding part housing 11 and is adjusted as to its diameter to about the plug pin 7.  
  For the securing of the holding part housing I 1 serves a screw flange 16 originating from the housing 11 through bores 17 of the flange 16 the securing screws 18 enter. For the latter preferably plugs 19 are to be inserted into the ceiling 1. The bow 3 of the horizontal bar is coordinated to the holding part 2 as follows:  
 The plug pin 7 is at first inserted into the bearing bore 13 of the filling piece 12 such. that the bayonet closure pin 14 can enter&#39;into the bayonet slots 8. The insert movement of the plug pin 7 is limited, if the bayonet closure pin 14 abuts the end edge 8&#39; of the slots 8. Now the plug pin 7 can be rotated, whereby it enters into the cross slots 9. They limit the rotary movement. By the following pull on the plug pin 7 or due to the self weight of the bow 3 of the horizontal bar the bayonet closure pin 14 grips into the upwardly directed bayonet closure escape slots 10 of the plug pin 7, the end edges 10&#39; of which form an abutment for the downward movement of the plug pin 7, (see FIG. 4). Caused by a light clamping seat of the filling piece 12 in the holding part housing, the bow of the horizontal bar can be turned into the desired plane.  
  The removal of the bow 3 of the horizontal bar takes place in reversed succession, however this is only possible when the bow of the horizontal bar is not loaded.  
  The holding part housing in accordance with FIGS. 5 and 6 is designed in similar manner. Yet, in its inner side an axial pressure bearing is provided. The lower ring 21 of this pressure bearing 20 supports itself on a compressible ring 22, while a brake ring 24 steps against the upper ring 23 ofthe pressure bearing 20. All rings disposed on top of each other have an opening corresponding with the cross section of the plug pin 7.  
  For the holding of the plug pin 7 serves the bayonet closure pin 14 crossing the opening 25, provided in the upper ring 23. During the insertion of the plug pin 7 the upper ring 23 remains in its position due to the brake effect of the ring 24, while upon loading of the bow 3 of the horizontal bar, the lower ring 22 is compressed. The axial pressure bearing 20 moves upon loading about the measure of the compression downwardly, whereby the braking ring 24 is not effective with the upper ring 23 (see FIG. 6). The brake ring 24 is secured in its position by pins 26. I  
  The FIGS. 7 and 8 show a holding part housing 11 corresponding with the previously described embodiment, however, with the difference that for its securing wall anchors 27 are provided which originate in equal angular distribution on the periphery of the housing. Then the holding part housing 11 is covered on the upper side by a cap 28. For the purpose ofa good holding are the ends 27&#39; of the wall anchor 27 form sprayed apart.  
  In accordance with FIGS. 9 and 10 the holding part has a tubular housing 28, the opening 29 of which is crossed by the bayonet closure 14. From the jacket face of the housing 28 extend likewise wall anchors 27, so that the such formed housing could be inserted for its securing into a ceiling.  
  While I havev disclosed several embodiments of the present invention, it is to be understood that these embodiments are given by example only, and not in a limiting sense.  
 I claim:  
 l. A dismountable gymnastic device formed as a horizontal bar, comprising a bow including a horizontal bar,  
 a holding means,  
 a central plug pin disposed on said bow and entering into said holding means in a vertical plug connection, as well as being coordinated to a bayonetclosure connection, and  
 said bayonet-closure connection including escape recesses extending in upward direction,  
 a bayonet-closure pin,  
 a housing for said holding means,  
 an axial-pressure bearing disposed in said housing and including an upper ring having an opening, and  
 said bayonet-closure pin crossing said opening of said upper ring.  
 2. A dismountable gymnastic device formed as a horizontal bar, comprising a bow including a horizontal bar.  
 a holding means,  
 a central plug pin disposed on said bow and entering into said holding means in a vertical plug connection, as well as being coordinated to a bayonetclosure connection,  
 said bayonet-closure connection including escape recesses extending in upward direction a bayonet-closure pin,  
 said holding means including,  
 a housing,  
 a braking ring rigidly mounted in saidhousing.  
 an upper bearing ring having an-axial opening disposed underneath said braking ring rotatably and axially displaceably mounted in said housing and abutting said braking ring in an unloaded condition of said bow, and  
 said upper bearing ring prevented from rotatable movement when abutting said braking ring,  
 a compressible lower ring abuttingly disposed underneath said upper bearing ring,  
 said upper bearing ring displaced axially downwardly spaced away from said braking ring in a loaded condition of said bow compressing said lower ring and permitting free rotation of said upper bearing ring, and  
 said bayonet-closure pin crossing said axial opening of said upper bearing ring.