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Adjustable dumbbellAdjustable dumbbell description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070225132, Adjustable dumbbell. Brief Patent Description - Full Patent Description - Patent Application Claims
RELATED APPLICATIONS [0001]This application claims the benefit of foreign applications filed 24 Mar. 2006 in China, Number 200620025625.4 and EPO May 29 2006 in the EPO, Number 06252637, the subject matter of which is incorporated herein by reference. BACKGROUND OF THE INVENTION [0002]1. Field of the Invention [0003]The present invention relates to exercise equipment, and particularly to an adjustable dumbbell which can be self-locked in use and adjusted for storage. [0004]2. Description of the Prior Art [0005]The use of dumbbells of known designs and configurations is known in the prior art. More specifically, dumbbells of known designs and configurations previously devised and utilized for the purpose of changing the weight for use are known to consist basically of familiar, expected, and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which has been developed for the fulfillment of countless objectives and requirements. [0006]While the prior art devices fulfill their respective, particular objectives and requirements, the prior patents do not describe an adjustable dumbbell that allows self-locking for use and adjusting for storage of exercise equipment. [0007]There are many disadvantages of commonly-used weight-lifting instruments. Weight training instruments, generally, are large in volume, expensive, and difficult to maintain, therefore, they are quite inconvenient to use. For example, they are generally complex structures composed of cables, belt pulleys, weight and other mechanisms permitting various exercise on a single machine. [0008]Simple weight-lifting instruments generally include a shaft and many separate, removable weights. The shaft can be used by both hands or by one hand, that is, used as a dumbbell. It is desirable to minimize the possibility of weights sliding from ends of the shaft in the use of the simple weight-lifting instrument. Therefore, safety clamp mechanisms, such as clamping rings or clips, are required to fix the weight onto the shaft. However, the connection of these clamping rings or clips is troublesome, and the connection is also unsafe, especially when becoming worn or broken when, as a result, they become difficult to place in a secure position. [0009]Assembling particular weights on a simple weight-lifting instrument is tedious. For assembling onto the shaft, a user must carry the weight from a designated storing location onto the shaft, or vice versa, and then raise up, collimate, slide and fix the weights to the shaft. Each of the weights must be placed on an individual storing location which not only increases the time for assembling the weights, but also inevitably causes the weights to be scattered around the weight-lifting area. [0010]Although weight-lifting is considered as an anaerobic sport, because the weight lifter commonly has a break of several minutes between two sets of exercises, some individuals like to do weight-lifting as an aerobic sport. However, aerobic sports require actions which are almost continuous to maintain a high heart rate. Thus, individuals using the simple weight-lifting instrument are unable to exercise aerobically due to the requirements of withdrawing the weights and assembling and fixing them onto the shaft. The individual cannot maintain a high heart rate while spending time in repeatedly withdrawing, assembling and fixing weights. [0011]For fixed dumbbells that do not have removable weights and clamping rings, a user has to choose lots of such dumbbells according to different weight requirements. Accordingly, these dumbbells are not convenient for use and storage. [0012]Other dumbbells which allow adjusting the weight have no self-locking mechanism. The result is the risk of weights slipping off during use. [0013]In this respect, the adjustable dumbbell according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of self-locking for use and adjusting for storage of exercise equipment. [0014]Therefore, it can be appreciated that there exists a continuing need for a new and improved adjustable dumbbell which can be used for self-locking for use and adjusting for storage of exercise equipment. In this regard, the present invention substantially fulfills this need. SUMMARY OF THE INVENTION [0015]In view of the foregoing disadvantages inherent in the known types of dumbbells of known designs and configurations now present in the prior art, the present invention provides an improved adjustable dumbbell. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide an adjustable dumbbell including a self-adjusting mechanism, having the ability to provide various weight options and being self-locking during use to insure safety. [0016]To attain this, the present invention essentially comprises an adjustable dumbbell that can be self-locked in use and adjusted for storage. First provided is a plurality of weights. Each weight has a central hole and a slot extending through the central hole and extending to both sides from the central hole. Each slot has one end passing through the central hole to a point below the central hole and another end extending upwardly to the edge of the weight to form a gap. The width of the slot is less than the diameter of the central hole. [0017]Next provided is a weight-lifting shaft. The shaft has a grip handle and a rotatable spindle extending through the grip handle. The shaft also has, adjacent to each end of the spindle, a plurality of cam plates with an adjustment knob at each end of the spindle. The cam plates each have an outer diameter with protruding edges on opposed ends adapted to releasably couple selectively with the central hole of the weights. [0018]The plurality of weights includes a set of weights positioned adjacent to each end of the spindle. For each set of weights and plurality of cam plates, a platform is provided on each side of each set of cam plates with a fixing plate adjacent to each adjusting knob. [0019]Next, a spring is provided. An associated pin is adapted to be urged downwardly by the spring and is mounted to a lower portion of each platform. [0020]Lastly provided is a holder. The holder has grooves of a size to fit the weight. The holder also has protrusion blocks. The protrusion blocks are adapted to cooperate with the pins on the platform of the shaft to form a self-locking mechanism. [0021]An adjustable dumbbell comprises a plurality of weights, each of which has a central hole and a slat extending through the central hole, a weight-lifting shaft and a holder. The holder cooperates with the weight-lifting shaft to form a self-locking mechanism. The weight-lifting shaft comprises a grip handle, a rotatable spindle extending through the grip handle, several cam plates assembled through both ends of the rotatable spindle, and adjustment knobs assembled on both sides of the weight-lifting shaft. The outer diameters of the cam plates fit the central hole of the weights. The holder comprises grooves and protrusion blocks. The protrusion blocks cooperate with the pins on the weight-lifting shaft to form a self-locking means. Continue reading about Adjustable dumbbell... Full patent description for Adjustable dumbbell Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Adjustable dumbbell 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 dumbbell or other areas of interest. ### Previous Patent Application: Rehabilitation unit Next Patent Application: Break apart spherical exercise apparatus Industry Class: Exercise devices ### FreshPatents.com Support Thank you for viewing the Adjustable dumbbell patent info. IP-related news and info Results in 2.37626 seconds Other interesting Feshpatents.com categories: Tyco , Unilever , Warner-lambert , 3m 174 |
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