Dumbbell weight training device having detachable weight plates
First Claim
1. A weight training device comprising a gripping handle at which said weight training device is lifted, a first weight plate connected to said gripping handle and having a coupling body projecting therefrom, and at least one additional weight plate to be detachably connected to said first weight plate, said additional weight plate having an engagement pin moving between retracted and extended positions relative to said first weight plate, said engagement pin being moved to the extended position at which to be removably received by said first weight plate, whereby said additional weight plate is detachably connected to said first weight plate, and said engagement pin being moved to the retracted position at which to be removed from said first weight plate, whereby said additional weight plate is disconnected from said first weight plate, said additional weight plate including a coupling slot aligned for receipt of the coupling body of said first weight plate and an engagement pin receiving channel communicating with said coupling slot, said engagement pin moving to the extended position and riding through the engagement pin receiving channel of said additional weight plate and into engagement with the coupling body of said first weight plate at said coupling slot, whereby said additional weight plate is lifted together with said first weight plate.
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Accused Products
Abstract
Disclosed is a dumbbell of the type commonly found in a fitness center to be used as a weight training device during a weight training or exercise program. The dumbbell includes a gripping handle and a pair of collars fixedly connected to opposites ends of the handle. A series of weight plates having correspondingly different weights are adapted to be detachably connected to each other and to each one of the collars so as to enable a user to selectively and incrementally adjust the gross weight of the dumbbell to conform to his weight training program. Each weight plate carries a lock cartridge having an engagement pin moving therethrough between retracted and extended positions in response to a manual pushing force. In the extended position, the engagement pin of an additional weight plate is received within an engagement pin extension channel of an existing weight plate being carried by the dumbbell, whereby to prevent a disconnection of the additional weight plate from the existing weight plate.
111 Citations
12 Claims
- 1. A weight training device comprising a gripping handle at which said weight training device is lifted, a first weight plate connected to said gripping handle and having a coupling body projecting therefrom, and at least one additional weight plate to be detachably connected to said first weight plate, said additional weight plate having an engagement pin moving between retracted and extended positions relative to said first weight plate, said engagement pin being moved to the extended position at which to be removably received by said first weight plate, whereby said additional weight plate is detachably connected to said first weight plate, and said engagement pin being moved to the retracted position at which to be removed from said first weight plate, whereby said additional weight plate is disconnected from said first weight plate, said additional weight plate including a coupling slot aligned for receipt of the coupling body of said first weight plate and an engagement pin receiving channel communicating with said coupling slot, said engagement pin moving to the extended position and riding through the engagement pin receiving channel of said additional weight plate and into engagement with the coupling body of said first weight plate at said coupling slot, whereby said additional weight plate is lifted together with said first weight plate.
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6. A weight training device comprising:
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a gripping handle at which said weight training device is lifted; a collar fixedly connected to said gripping handle; a first weight plate connected to said collar; and a second weight plate to be coupled to said first weight plate and lifted therewith, said second weight plate having an engagement pin movable between a retracted position, at which said second weight plate is disconnected from said first weight plate, and an extended position, at which said second weight plate is detachably connected to said first weight plate, said engagement pin moving between said retracted and said extended positions in response to a pushing force applied to said engagement pin, said first weight plate having an engagement pin channel formed therein, the engagement pin of said second weight plate being moved to the extended position at which to be received within said engagement pin extension channel to thereby prevent a disconnection of said second weight plate from said first weight plate, and said second weight plate having a coupling slot formed therein and said first weight plate having a coupling body projecting therefrom and aligned for receipt within the coupling slot of said second weight plate, said engagement pin channel being formed in the coupling body of said first weight plate, the receipt of said engagement pin by said engagement pin channel in said coupling body preventing a removal of said coupling body from said coupling slot and correspondingly preventing the disconnection of said second weight plate from said first weight plate. - View Dependent Claims (7, 9, 10, 11)
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12. A weight training device comprising a gripping handle at which said weight training device is lifted, a first weight plate connected to said gripping handle and having a coupling body projecting therefrom, and an engagement pin channel located in said coupling body, and at least one additional weight plate to be detachably connected to said first weight plate, a lock cartridge, said additional weight plate having a cartridge cavity within which to removably receive said lock cartridge, and an engagement pin carried by and movable through said lock cartridge between retracted and extended positions relative to said first weight plate, said engagement pin being moved to the extended position at which to be removably attached to said first weight plate, whereby said additional weight plate is detachably connected to said first weight plate, and said engagement pin being moved to the retracted position at which to be removed from said first weight plate, whereby said additional weight plate is disconnected from said first weight plate, said additional weight plate including a coupling slot aligned for receipt of the coupling body of said first weight plate therewithin, said engagement pin moving to the extended position at which to be received by the engagement pin channel in the coupling body of said first weight plate at the coupling slot of said additional weight plate, whereby said additional weight plate is connected to and lifted with said first weight plate.
Specification