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Compound trapeze and method of using sameRelated Patent Categories: Exercise Devices, Gymnastic, Trapeze Or RingsCompound trapeze and method of using same description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070111859, Compound trapeze and method of using same. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to trapezes and methods of using same. [0003] 2. Description of the Related Art [0004] A trapeze is a device that has long been associated with circuses and aerial performers. Although the rigging equipment and materials of construction have been upgraded over time, the basic design has remained the same for well over a hundred years. In general, a trapeze consists of a short bar suspended near or at its ends by suspension lines, e.g., cables, so that it is free to swing back and forth in a regular fashion. The length of bar between the suspension lines is selected to be sufficiently long to accommodate the body width of a performer. There are specialized versions of the trapeze, such as the double horizontal trapeze in which a bar which is long enough to accommodate two performers is used and a third suspension line is added at the midpoint of the bar's length. Another specialized version is the double vertical trapeze in which one trapeze is suspended from another. However, until the present invention, the trapeze has been a little more than a periodic motion swing on which aerialists performed. SUMMARY OF THE INVENTION [0005] The present invention adds a new feature to the prior art trapeze and to the ways in which a trapeze can be used. According to one aspect of the present invention, there is provided a compound trapeze consisting of a trapeze and a selectively engageable pivot interposed at preselected intermediate positions along the respective lengths of the suspension lines of the trapeze between their points of suspension and the trapeze bar. The selectively engageable pivot is referred to hereinafter and in the appended claims as a "secondary pivot." The secondary pivot is used to selectively arrest the motion of the suspension lines between their points of suspension and the points at which the secondary pivot acts upon them so that the secondary pivot defines new pivot points for the portions of the suspension lines below the secondary pivot. When engaged, the secondary pivot interrupts the periodic motion of the trapeze midswing. This causes the trapeze bar and the performer holding onto it to angularly accelerate along an arc of suddenly shortened radius as both the effective length of the suspension lines and the period of swing of the trapeze are suddenly shortened by the restraining action of the secondary pivot. The angular acceleration gives the performer the opportunity to perform stunts which could not be performed under the constraints that the laws of physics impose on the periodic motion of an unrestrained trapeze. [0006] According to another aspect of the present invention, there is provided a secondary pivot for use with a trapeze. [0007] According to still another aspect of the present invention, there are provided methods of using a trapeze which include a step of restraining the periodic motion of the trapeze so that the performer experiences rotational acceleration. BRIEF DESCRIPTION OF THE DRAWINGS [0008] The criticality of the features and merits of the present invention will be better understood by reference to the attached drawings. It is to be understood, however, that the drawings are designed for the purpose of illustration only and not as a definition of the limits of the present invention. [0009] FIG. 1 is a schematic elevational front view of a prior art trapeze. [0010] FIG. 2 is a schematic perspective view of an embodiment of the present invention. [0011] FIGS. 3A-C are schematic side elevational views illustrating the operation of the embodiment shown in FIG. 2. [0012] FIG. 3A shows the embodiment at the instant in time when the performer is just about to swing out from the platform. [0013] FIG. 3B shows the embodiment a short time later when the performer has reached a certain point in the swing at which the slack goes out of the restraining line. [0014] FIG. 3C shows the embodiment a short time after that shown in FIG. 3B. [0015] FIG. 4 schematically illustrates a plan view of a secondary pivot of another embodiment of the present invention in use taken at an elevation that is intermediate between the points of suspension of the trapeze suspension lines and the trapeze bar. [0016] FIG. 5 schematically illustrates a plan view of secondary pivot of another embodiment of the present invention in use taken at the same cross sectional height as FIG. 4. [0017] FIG. 6 schematically illustrates a plan view of a secondary pivot of still another embodiment of the present invention in use taken at the same elevation as FIG. 4. [0018] FIG. 7 schematically illustrates a plan view of a secondary pivot of yet another embodiment of the present invention in use taken at the same elevation as FIG. 4. [0019] FIG. 8 schematically illustrates a plan view of a secondary pivot of another embodiment of the present invention in use taken at the same elevation as FIG. 4. [0020] FIG. 9 schematically illustrates a side elevational view of an embodiment of the present invention in use wherein the length of the restraining line is dynamically adjustable. DESCRIPTION OF PREFERRED EMBODIMENTS Continue reading about Compound trapeze and method of using same... Full patent description for Compound trapeze and method of using same Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Compound trapeze and method of using same patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. 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