Adjustable dumbbell and system

Inactive Publication Date: 2012-01-26
RECREATION SUPPLY
View PDF0 Cites 70 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]To use the weight lifting device to exercise, a user extends the retention member through a desired number of plates on both ends of the device. Next the user rotates the retention bar into the retention groove of the selected weight plate. When the retention bar is placed in the retention groove the holes on the rod are aligned with the locking mechanisms. The user then engages the pin inside the locking mechanism with the aligned hole. This prevents the rod from rotating and moving longitudinally. The weight plate is prevented from slipping off the end of the rod by the retention bar nested in the retention groove.

Problems solved by technology

Although conventional dumbbells provide the freedom desired by weightlifters, conventional dumbbells have several drawbacks.
The fixed weight dumbbells prevent a user from adjusting the amount of weight used, thus decreasing the amount of exercise options available to the user.
Although allowing the weight to be adjusted, the attachment devices may be cumbersome and subject to failure potentially injuring the user or others.
These devices are often inconvenient to mount onto the bar and remove from the bar.
Another drawback of this type of weight lifting system is the expense of purchasing separate pieces of equipment for each different weight desired to be used by the weightlifter.
However, many of these devices interfere with the natural movement of the user during the lifting motion.
These devices force the user to insert a hand into a cage to lift the weight, severely limiting the movement of the user's wrist.
These devices may also be cumbersome to use.
Although the devices allow a user to select a desired amount of weight, the width of the dumbbell and barbell may be static making the device unstable during use.
In addition, these devices offer little in the way of safety.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Adjustable dumbbell and system
  • Adjustable dumbbell and system
  • Adjustable dumbbell and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

)

[0040]One exemplary embodiment of an adjustable dumbbell device 5 (adjustable dumbbell) of the present invention is illustrated in FIG. 1, and is depicted in more detail in the exploded view of FIG. 2 and in the component drawings of FIG. 3-7. As shown, the adjustable dumbbell 5 includes a handle 10 having opposing locking mechanisms 12 attached to the end portions thereof. A plurality of selectable weight plates 14 positioned adjacent to the locking mechanisms 12. A retention member 16 is disposed within each end of the handle 10 and extends from the handle 10 through the weight plates 14, the purpose of which is described in more detail below. A base 18 is also provided and includes a base plate 20, plate rests 22 and plate guides 24 extending upwardly from the top surface of the base plate 20.

[0041]As shown in FIG. 2, the plate rests 22 are affixed to the top surface of the base plate 20 and extend upwardly therefrom. The plate rests 22 are adapted to contact and support the wei...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An adjustable weightlifting device having selectable weights. The adjustable weightlifting device allows users to select a desired number of weight plates, and then couples the selected weight plates to retention members disposed in the handle of the device.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is a continuation-in-part of U.S. application Ser. No. 12 / 471,156 filed May, 22, 2009, now U.S. Pat. No. 8,007,415, which is hereby incorporated by reference, as if fully rewritten herein.TECHNICAL FIELD[0002]The present invention is directed to a weightlifting device. More particularly, exemplary embodiments of the present invention are directed to an adjustable weight dumbbell device and system having an internal plate retention mechanism.BACKGROUND OF THE INVENTIVE FIELD[0003]Many weightlifters perform a variety of exercises to build and develop muscle. These exercises can be performed through the use of free weights or the use of weightlifting machines. While both free weights and weightlifting machines provide a means to develop and build muscle, many weightlifters prefer the natural motion afforded by the use of free weights, such as dumbbells and barbells. The ability to move naturally allows the weightlifter a grea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A63B21/072
CPCA63B21/00065A63B21/075A63B21/0728
InventorLUNDQUIST, RANDAL L.LUEDEKE, JASON B.
OwnerRECREATION SUPPLY