Dumbbell weight selection strcuture

• US 20090124470A1
• Filed: 11/08/2007
• Published: 05/14/2009
• Est. Priority Date: 11/08/2007
• Status: Active Grant

• Current Assignee: Yu-Chen Yu
• Original Assignee: Yu-Chen Yu
• Inventors: Yu, Yu-Chen
• Granted Patent: US 7,704,197 B2
• Time in Patent Office: Days
• US Class Current: 482/107
• CPC Class Codes: A63B 21/00065 by increasing or reducing the number of resistance units
• CPC Class Codes: A63B 21/063 Weight selecting means
• CPC Class Codes: A63B 21/075 with variable weights , e.g. weight systems with weight selecting means for bar-bells or dumb-bells

Abstract

A dumbbell weight selection structure includes an extension rod disposed at any end of a handle unit. The extension rod is disposed with a selection unit, which contains a selection mechanism and multiple weight plates are disposed thereon. The selection mechanism includes a slide plate linked to drive the selection plate set to travel. A locking hole to insert by the selection plate set is disposed at where appropriately on each weight plate. The slide plate is moved to change connection of the selection plate set corresponding to the locking holes of multiple weight plates to select quantity of weight plates to be attached to the dumbbell as desired for achieving discretional adjustment of the overall weight of the dumbbell.

Claims

1. A dumbbell weight selection structure comprising a handle unit, a selection mechanism, and one weight plate, wherein one end of the handle unit is connected to the selection mechanism;

the selection mechanism including a movable selection plate set; and

the weight plate being disposed with an opening and a locking hole for the locking hole to receive insertion by the selection plate set.

2. The dumbbell weight selection structure as claimed in claim 1, wherein an extension rod is disposed to an end edge of the handle unit;

the selection unit includes a casing;

a chute is disposed at where appropriately on the casing; and

the selection mechanism is disposed on the chute.

3. The dumbbell weight selection structure as claimed in claim 2, wherein a guide plate is further disposed to the selection mechanism;

two rails are respectively disposed on both sides of the guide plate;

a slip-on clip is externally disposed to the rails;

a slide plate is connected to the slip-on clip; and

the slip-on clip is further connected to a connection cord and a selection plate set.

4. The dumbbell weight selection structure as claimed in claim 1, wherein the selection plate set is comprised of multiple selection plates.

5. The dumbbell weight selection structure as claimed in claim 4, wherein an axis is disposed among each selection plate.

6. The dumbbell weight selection structure as claimed in claim 5, wherein the slide plate, the slip-on clip, the connection cord, and the selection plate set are linked to each other for traveling.

7. The dumbbell weight selection structure as claimed in claim 3, wherein a locating slot is disposed at where appropriately on the slide plate;

and the locating slot is externally inserted onto a locating plate.

8. The dumbbell weight selection structure as claimed in claim 3, wherein the connection rod and the selection plate set form a loop.

9. The dumbbell weight selection structure as claimed in claim 3, wherein the slide plate is exposed out of the chute.

10. The dumbbell weight selection structure as claimed in claim 9, wherein multiple ribs are disposed at where appropriately to the chute.

11. The dumbbell weight selection structure as claimed in claim 3, wherein a gap is disposed at where appropriately on the guide plate, and the gap accommodates and secure the connection cord in position.