Round trampoline

Abstract

A round trampoline having a sectional, substantially circular frame to which a circular mat is resiliently attached to the frame by a plurality of radially arranged springs. The mat comprises a pair of strips arranged perpendicularly to one another to form a reinforced center jumping area. The frame sections advantageously fit together in a double joint arrangement which affords great rigidity to the structure. .Iadd.The trampoline has sections forming the annular frame which are detachably connected to each other. At the ends of each section there is a portion of a generally U-shaped support member attached thereto and which extends downwardly below the frame rail. The portions of the generally U-shaped support that extend below the frame are detachably connectable with each other and secure the connection of the sections when joined with each other. .Iaddend.

What is claimed as new is as follows: 
     
       1. A round trampoline, comprising, in combination: a. a sectional, substantially circular frame, the frame including a plurality of sections each formed by a pair of arcuate rails connected together to form a double rail, one of the rails staggered with respect to the other of the rails in order to form a staggered joint with an adjoining frame section and to lock the joint and prevent rotation or flexation of the adjoining sections;   b. leg means provided on the sections of the frame for supporting the frame on a support surface;   c. fastener means connecting the sections of the frame together;   d. a mat; and   e. resilient means for connecting the mat to the frame.   
     
     
       2. A structure as defined in claim 1, wherein the leg means includes U-shaped leg sections, with each frame section having a one of the leg sections affixed thereto. 
     
     
       3. A structure as defined in claim 2, wherein the fastener means includes a male-female coupling at each meeting point of adjacent rails. .Iadd. 
     
     
       4.  A substantially round trampoline comprising a sectional, substantially annular frame including a frame rail formed by a plurality of sections, means joining the ends of adjacent sections, each section being detachably connected to the adjacent section and having depending therefrom leg portions, one leg portion detachably connected to a leg portion of the adjacent section so as to form a generally U-shaped trampoline support underlying the frame, a mat attached to the frame for projecting a person, the depending leg portions having upper ends rigidly connected with the frame rail sections in substantially equal longitudinally spaced relation to the joint between adjacent sections of the frame rail for preventing relative rotation between adjacent sections of the frame rail and preventing lateral bending of the frame rail the lower ends of the leg portions being detachably connected to one another; said U-shaped support bridging the joint between adjacent rail sections, bight portions of the legs forming the sole support for the trampoline and being generally in alignment with the frame rail, and means releasably joining the sections of the legs to enable assembly and disassembly of the frame rail sections and the leg portion so that when disassembled each section will have rigidly attached thereto a leg portion at each end thereof. .Iaddend. .Iadd. 
     
     
       5.  The structure as defined in claim 4 said mat being supported within said annular frame, said mat being substantially concentric with respect to the frame, a plurality of radial springs of equal length and equally spaced circumferentially between the mat and frame, said mat being constructed of a pair of perpendicular intersecting strips of flexible, fabric like material, thereby providing a dual thickness central jumping area, said springs exerting an inward force on said frame rail sections forming the sole means to retain the sections in assembled relation, said upper ends of the U-shaped leg being rigid with adjacent rail sections of the frame rail for preventing outward expansion of the frame rail. .Iaddend. .Iadd. 
     
     
       6.  The structure as defined in claim 4 wherein bight portions of the legs are spaced from each other circumferentially of the frame rail with bight portions being completely independent of each other and unconnected with the area circumferentially between and transversely between bight portions of the legs being devoid of obstructions. .Iaddend. .Iadd. 
     
     
       7.  A round trampoline comprising a sectional, substantially circular frame including a frame rail formed by a plurality of arcuate sections, means joining the ends of adjacent sections, a substantially rigid U-shaped leg underlying the frame rail and bridging the joint between each pair of adjacent sections with the U-shaped leg including upper ends rigidly affixed to adjacent sections of the frame rail in longitudinally spaced relation to the joint between adjacent sections of the frame rail for preventing relative rotation between adjacent sections of the frame rail and preventing lateral bending of the frame rail, each U-shaped leg including a pair of downwardly converging leg portions extending rigidly from the frame rail with the lower ends of the leg portions being interconnected by a bight portion bridging the joint between adjacent rail sections, the bight portions of the legs forming the sole support for the trampoline and being generally in alignment with the frame rail, said frame rail sections and legs being tubular, said means joining the ends of adjacent arcuate sections including a plug rigid with one of said frame sections and snugly telescoped into the end of an adjacent frame section, and a mat supported within said circular frame, said mat being substantially circular and concentric with respect to the frame, a plurality of radial springs of equal length and equally spaced circumferentially between the mat and frame, said mat being constructed of a pair of perpendicular intersecting strips of flexible, fabric like material, each strip having a width of approximately one-half of the diameter of the frame rail thereby providing a dual thickness central jumping area, the portion of the mat exteriorly of the central jumping area being of mesh construction to enable passage of air therethrough to prevent ballooning of the mat, and filler pieces of fabric like material connected to the side edges of the strips outwardly of the jumping area and combining with the strips to form a circular mat, said strips being of mesh polypropylene and the filler pieces and strips being stitched together along the side edges thereof, said springs exerting an inward force on said frame rail sections forming the sole means to retain the sections in assembled relation, said upper ends of the U-shaped leg being rigid with adjacent rail sections of the frame rail for preventing outward expansion of the frame rail. .Iaddend.