US 11,478,675 C1 (12,493rd)
Weight adjustable dumbbell
Jianxin Chen, Hangzhou (CN)
Filed by Jianxin Chen, Hangzhou (CN)
Reexamination Request No. 90/019,174, Mar. 15, 2023.
Reexamination Certificate for Patent 11,478,675, issued Oct. 25, 2022, Appl. No. 17/114,400, Dec. 7, 2020.
Ex Parte Reexamination Certificate issued on Jan. 26, 2024.
Int. Cl. A63B 21/075 (2006.01); A63B 21/072 (2006.01)
CPC A63B 21/075 (2013.01) [A63B 21/0728 (2013.01)]
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
Claims 1-6 are cancelled.
1. A weight adjustable dumbbell, comprising a dumbbell bar assembly, a dumbbell base and a plurality of dumbbell plates placed on two sides of the dumbbell base, wherein the dumbbell bar assembly comprises a plurality of synchronously rotatable hanging plates arranged adjacently, an end of each of the hanging plates is provided with an extruded hanging block; an end of each of the dumbbell plates is defined with a U-shaped groove where the hanging block is radially slidable, a bump is provided in the U-shaped groove, and the bump and a wall of the U-shaped groove define a limiting area therebetween, the hanging block is capable of sliding into the limiting area and being latched with the bump during the hanging block rotating in the U-shaped groove;
the dumbbell bar assembly further comprises a dumbbell bar successively extending through the hanging plates and a handle tube sleeved on the dumbbell bar and rotatable relative to the dumbbell bar, the hanging plates are located on two sides of the handle tube in equal quantities, respectively; and the handle tube is synchronously rotatable with the hanging plates;
the dumbbell bar assembly further comprising a stop mechanism connected to one side of the handle tube, the stop mechanism comprising a first cap sleeved on the dumbbell bar and connected to the dumbbell bar, a stop plate received in one side of the first cap and rotatable relative to the first cap, and a stop component received in the first cap slidable along a radial direction of the first cap; the stop plate comprises a plurality of limiting latches evenly arranged along a periphery of the first cap, and the limiting latches are extruding to one side of the first cap, two adjacent limiting latches form a limiting notch therebetween, and the handle tube is locked while the stop component slides into the limiting notch; and an elastic component biasing the stop component away from an axis of the first cap is provided inside of the first cap;
a middle of the stop plate is defined with a through hole with the dumbbell bar extending through, a periphery of the through hole is defined with four first connecting recesses in communication with the through hole, the four first connecting recesses are evenly arranged in a crossed shape, one side of the handle tube is provided with two first limiting blocks;
a middle of the first cap is provided with a mounting groove, the stop plate is received in the mounting groove; a ring groove is located in the mounting groove, the limiting latches are latched into the ring groove;
a dial is embedded in the mounting groove of the first cap; the dial is a dish-shaped dial and is coaxial with the stop plate; a middle of the dial is provided with two second connecting recesses; the first limiting blocks are able to be synchronously latched into two of the first connecting recesses and the second connecting recesses, such that the handle tube synchronously rotates with the dial and the stop plate; the dial further comprises two second limiting blocks alternately distributed with the two second connecting recesses; the second limiting blocks are able to be latched into other two first connecting recesses of the stop plate, such that the stop plate is connected to the dial;
a regular polygonal groove is defined on a side of each hanging plate, and another side of each hanging plate is provided with a regular polygonal block corresponding to the regular polygonal groove; one regular polygonal block is also disposed on each side of the handle tube; each regular polygonal block is latched into an adjacent regular polygonal groove, such that all of the hanging plates are synchronously driven by the handle tube to rotate;
the stop component comprises a latching block and a button block connected to each other; a middle area of the latching block is provided with an avoiding recess; the limiting latches are able to pass through the avoiding recess when the elastic component is compressed; the latching block has a connecting post, and the button block has a connecting hole, the latching block and the button block are connected by latching the connecting post into the connecting hole.