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  Weight-adjustable dumbbellUSPTO Application #: 20060234843Title: Weight-adjustable dumbbell Abstract: A weight-adjustable dumbbell includes a dumbbell base, which has a plurality of locating holes, a plurality of weights, which are detachably mountable on the dumbbell base, each having a plurality of through holes corresponding to the locating holes of the dumbbell bases, and a plurality of lock pins insertable into the locating holes of the dumbbell base and the through holes of the weights to selectively secure the weights to the dumbbell base. (end of abstract) Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw - Washington, DC, US Inventor: James Chen USPTO Applicaton #: 20060234843 - Class: 482107000 (USPTO) Related Patent Categories: Exercise Devices, User Manipulated Force Resisting Apparatus, Component Thereof, Or Accessory Therefor, Utilizing Weight Resistance, Handheld Bar With Weight At Each End (e.g., Barbell, Dumbbell, Etc.) Or Component Thereof, Having Securing Member (e.g., Locking Collar, Etc.) For Retaining Weight On Bar The Patent Description & Claims data below is from USPTO Patent Application 20060234843. 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 a dumbbell and more particularly, to a weight-adjustable dumbbell. [0003] 2. Description of the Related Art [0004] When making a body building exercise, a dumbbell is commonly used to train the muscles. There are dumbbells that allow the user to adjust the total weight. A weight-adjustable dumbbell generally comprises a bar, a plurality of weights selectively detachably mounted on the ends of the bar, and two screw caps respectively threaded onto the ends of the bar to lock the loaded weights. When adjusting the total weight of the dumbbell, the user must detach the screw caps from the bar, and then remove some of the weights from the bar or attach new weights to the bar, and then fasten the screw caps to the bar again after loading of the selected weights. This adjusting procedure is complicated. Further, if the end caps are not fastened tight or the weights are not evenly arranged on the two ends of the bar, the user may be unable to keep the dumbbell in balance when lifting the dumbbell, thereby causing an accident. SUMMARY OF THE INVENTION [0005] The present invention has been accomplished under the circumstances in view. It is one object of the present invention to provide a dumbbell, which allows the user to adjust the total weight of the dumbbell conveniently. [0006] To achieve the above-mentioned object, the weight-adjustable dumbbell provided by the present invention comprises a dumbbell base having at least one locating hole; a plurality of weights detachably mountable on the dumbbell base, the weights each having at least one through hole corresponding to the at least one locating hole of the dumbbell base; and at least one lock pin insertable into the at least one locating hole of the dumbbell base and insertable into the at least one through hole of the weights to selectively secure the weights to the dumbbell base. BRIEF DESCRIPTION OF THE DRAWINGS [0007] FIG. 1 is a perspective view of a weight-adjustable weight according to the present invention. [0008] FIG. 2 is an exploded view of the weight-adjustable dumbbell according to the present invention. [0009] FIG. 3 is a front view of the weight-adjustable dumbbell according to the present invention. [0010] FIG. 4 is a side view of the weight-adjustable dumbbell according to the present invention. [0011] FIG. 5 is a top view of the weight-adjustable dumbbell according to the present invention. [0012] FIG. 6 is a sectional view taken along line 6-6 of FIG. 4. [0013] FIG. 7 is a sectional view taken along line 7-7 of FIG. 3. [0014] FIG. 8 is a sectional view taken along line 8-8 of FIG. 3. [0015] FIG. 9 is a schematic drawing of the present invention, showing a number of weights separated from the dumbbell base. DETAILED DESCRIPTION OF THE INVENTION [0016] Referring to FIG. 1, a weight-adjustable dumbbell in accordance with the present invention is shown comprising a dumbbell base 11, a plurality of weights 21-29, and two lock pins 91. The weights 21-29 are respectively arranged at two sides of the dumbbell base 11. The two lock pins 91 are detachably fastened to the dumbbell base 11 at two sides. [0017] Referring to FIGS. 2 through 5, the dumbbell base 11 comprises a bar 12, and a holder portion 13 at each of the two distal ends thereof. Each holder portion 13 has a recess 14 at each of the front and back sides, a groove 15 at the bottom side, a plurality of locating holes 16 symmetrically arranged at two sides at different elevations in a staggered manner between the two recesses 14, numerical marks 19 marked in the front recess 14 corresponding to the locating holes 16 for indicating the total weight of the weight-adjustable dumbbell, a substantially inverted U-shaped stop plate 17 mounted in the back recess 14 around the corresponding locating holes 16, and an open chamber 18 at an outer side in communication between the locating holes 16. Further, the total weight of the dumbbell base 11 is about 5 lbs. [0018] The weights 21-29 are heavy plates each having a weight about 2.5 lbs. The weights 21-29 each have a slot 31-38, and a substantially inverted U-shaped mounting flange 4148 adjacent to the slot 31-38. The substantially inverted U-shaped mounting flange 4148 has two sidewalls 51-58 and a top wall 61-68 connected between the sidewalls 51-58. The weights 21-29 have a different pitch between the sidewalls 51-58 and a different elevation among the top walls 61-68. Further, a connecting rod 39 is connected between the two outer weights 29. [0019] Referring to FIGS. 4 and 5, when the weights 21-29 are set in the dumbbell base 11 at two sides, the mounting flanges 41 of the weights 21 are respectively received in the open chambers 18 of the two holder portions 13 of the dumbbell base 11; the mounting flanges 42 of the weights 22 are respectively inserted through the slots 31 of the weights 21 into the space between the two sidewalls 51; the mounting flanges 43 of the weights 23 are respectively inserted through the slots 32 of the weights 22 into the space between the sidewalls 52; the mounting flanges 44-48 of each of the other weights 24-28 are respectively inserted through the slots 33-37 of each of the weights 23-27 in the space between the corresponding sidewalls 53-57. When assembled, the mounting flanges 41-48 are attached to one another in proper order to keep the top walls 61-68 vertically spaced from one another at a predetermined distance, and the top side of the connecting rod 39 is spaced from the top wall 68 of the weight 28 at a distance. [0020] The top wall 61-68 of the mounting flange 41-48 has a downwardly extending pointed locating pin 81. The locating pin 81 has a head 82 protruding over the top side of the top wall 61-68. The head 82 has a top recess 83. When the weights 21-29 are set in the dumbbell base 11 at two sides, the heads 82 of the locating pins 81 at the top walls 61 are respectively received in respective open chamber 18 in the holder portions 13; the bottom ends of the locating pins 81 at the top walls 61 are respectively received in the recesses 83 of the locating pins 81 at the top walls 62; the bottom ends of the locating pins 81 at the top walls 62 are respectively received in the recesses 83 of the locating pins 81 at the top walls 63; the bottom ends of the locating pins 81 at the top walls 63-67 are respectively received in the recesses 83 of the locating pins 81 at the top walls 64-68; the; the bottom ends of the locating pins 81 at the top walls 68 are respectively received in respective holes 84 at the connecting rod 39. Therefore, the weights 21-29 are secured together by means of the locating pins 81. Continue reading... Full patent description for Weight-adjustable dumbbell Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Weight-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 Weight-adjustable dumbbell or other areas of interest. ### Previous Patent Application: Measuring device Next Patent Application: Abdominal exercise device Industry Class: Exercise devices ### FreshPatents.com Support Thank you for viewing the Weight-adjustable dumbbell patent info. IP-related news and info Results in 0.63731 seconds Other interesting Feshpatents.com categories: Qualcomm , Schering-Plough , Schlumberger , Seagate , Siemens , Texas Instruments , |
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