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Adjustable plate loaded kettlebellAdjustable plate loaded kettlebell description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080081744, Adjustable plate loaded kettlebell. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS REFERENCE TO RELATED APPLICATIONS [0001]This application relates to and claims priority from U.S. Provisional Patent Application Ser. No. 60/847,692, filed Sep. 28, 2006. FIELD OF THE INVENTION [0002]The present invention relates generally to exercise training devices and, more particularly, pertains to an adjustable plate loaded kettlebell used to develop strength, endurance, work capacity and balance in physical conditioning of the human body. BACKGROUND OF THE INVENTION [0003]The kettlebell is an exercise device that has been in the United States and Europe for over a century. The typical traditional kettlebell is a non-adjustable, cast iron weight that looks like a cannon ball with a suitcase handle on its top. Cast iron kettlebells are expensive ranging and priced from $90.00 for a 16 kilogram kettlebell and up to $180.00 for a 40 kilogram kettlebell. There are also demands for a wider range of kettlebell weights, since they are only generally available in fixed weight versions of 16, 24, 32 and 40 kilograms. Several problems characterize the use of kettlebells. The athlete must have a wide range of kettlebells. As strength levels increase, the athlete needs a heavier kettlebell that can be increased in weight by small increments. In order to be able to increase the weights of smaller increments, the cast iron kettlebells would have to come in more sizes. Storage and expense would then become a problem. [0004]One type of adjustable kettlebell is disclosed in U.S. Pat. No. 1,316,683, issued to Calvert on Sep. 23, 1919. In this design, a separate handle is screwed onto a separate shaft which passes through a series of stacked, non-rotatable weight plates enclosed by a pair of hemispherical casing portions. A nut is attached to the bottom of the shaft and acts as a depression in the lower portion of the casing to aid in holding the components of the device together. [0005]In recent years, other versions of the kettlebell have appeared in which bar bell plates have been attached to a handle, these plate loaded kettlebells are adjustable from 10 lbs. to over 100 lbs. An example of recent adjustable plate loaded kettlebells is shown in U.S. Design Pat. Nos. D522,594 and D522,595, both of which issued Jun. 6, 2006 to Gregory J. Donahue and Joseph E. Gromley. [0006]Despite the existence of the prior art, it remains desirable to provide an adjustable kettlebell with a unique handle and plate retaining structure. SUMMARY OF THE INVENTION [0007]It is a general object of this invention to provide a kettlebell than enables an athlete or exerciser to be able to have a kettlebell that can be increased in weight with small increments. Doing this will enable an athlete or exerciser to train more effectively while reducing the cost and storage space that would be necessary for a large set of cast kettlebells. [0008]The present invention relates to an adjustable kettlebell including a first set of vertically stacked plates having central bores registered with each other and fully exposed, outer peripheral edges aligned with each other. A retaining plate is positioned in stacked relationship against a lowermost one of the first set of plates and has a flat bottom, and a central reinforcement plate with a central hole aligned with the central bores of the plates. A dome top has an outer surface formed with a locating pocket therein, and an inner surface positioned upon an uppermost one of the first set of plates. The inner surface is recessed to receive a second set of vertically stacked plates having central bores registered with each other and with the central bores of the first set of plates. A handle unit is integrally formed by a rounded handle portion including lower ends joined to a handle base that has an internally threaded shaft depending therefrom. The handle base is snap fit in the locating pocket of the dome top, and the shaft passes through the central bores of the first and second set of plates and contacts the reinforcing plate at a lower end of the shaft. A fastener passes through the central hole in the reinforcement plate and is threaded into the lower end of the shaft for holding the first and second set of plates, the handle unit, the dome top and the retaining plate together. [0009]The locating pocket is defined by a bottom wall, a pair of end walls and a pair of opposed side walls provided with retaining snaps thereon. The handle base includes a U-shaped channel having front and back walls joined to a lower wall. The handle base is received in the locating pocket such that upper edges of the front and back walls define snap edges that are engaged by the retaining snaps on the side walls of the locating pocket enabling the handle base to be frictionally retained in the locating pocket. The lower wall of the handle base engages the bottom wall of the locating pocket. The inner surface of the dome top includes a set of recesses of varying sizes for accommodating varying sizes of the second set of plates. Certain of the first set of plates are solid weight plates and others of the first set of plates are plastic spacer plates. Each plastic spacer plate has a circular hub, a first inner ring surrounding the hub, a second inner ring surrounding the first inner ring, an outer peripheral edge surrounding the second inner ring and a series of radially extending walls connecting the inner rings and the peripheral edge. The second set of plates are preferably solid weight plates. The retaining plate is a plastic plate having a central hub for receiving the reinforcement plate in a snap fit. The handle unit, the weight plates, the reinforcement plate and the fastener are all constructed of metal. [0010]In another aspect of the invention, an adjustable kettlebell has a series of plates in stacked relationship, a handle having a shaft passing through the plates and a retaining arrangement including a base plate engageable with the shaft holding the plates together between the handle and the retaining arrangement. The invention is improved by a dome top having an outer surface formed with a locating pocket for receiving a portion of the handle in a snap fit therein, and a lower surface positioned upon an uppermost surface of the plates, and a reinforcement plate snap fit into a central hub of the base plate and engageable with the lower end of the shaft. [0011]Various other objects, features and advantages of the invention will be made apparent from the following description taken together with the drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0012]The drawings illustrate the best mode presently contemplated in carrying out the invention. [0013]In the drawings: [0014]FIG. 1 is a perspective view of an assembled, adjustable plate loaded kettlebell embodying the present invention; [0015]FIG. 2 is a top view of FIG. 1; [0016]FIG. 3 is a front view of FIG. 1; [0017]FIG. 4 is a side view of FIG. 1; [0018]FIG. 5 is a bottom view of FIG. 1; [0019]FIG. 6 is an exploded view of FIG. 1; Continue reading about Adjustable plate loaded kettlebell... Full patent description for Adjustable plate loaded kettlebell Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Adjustable plate loaded kettlebell patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Adjustable plate loaded kettlebell or other areas of interest. ### Previous Patent Application: Cushion adjusting assembly of an exercise machine Next Patent Application: Multiple-piece exercise apparatus Industry Class: Exercise devices ### FreshPatents.com Support Thank you for viewing the Adjustable plate loaded kettlebell patent info. 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