1170 results about "Dumbbell" patented technology

An adjustable dumbbell includes a number of weights each having a slot to receive end portions of a bar, and a number of latch rods slidably engaged in the weights and each having an inner end engageable into the slots of the weights and engageable with the bar, to anchor and latch a selected number of the weights to the bar, and to allow the selected weights to be moved in concert with the bar. The weights each has a spring member to bias and force the inner end of the latch rod to engage with and to latch the weights to the bar. The weights each includes a panel having an orifice to slidably receive the latch rod, and to anchor the latch rod to the panel when the catch of the knob is rotated relative to the panel.

A dumbbell is described including a handle having a grip and at least one end, an inner plate mounted on the handle adjacent the grip, in a fixed rotational orientation, a support plate rotationally mounted on the handle adjacent the inner plate, at least one collar rotationally mounted on the handle adjacent the support plate, and rotationally fixed with the support plate, a selector knob rotationally mounted on the handle adjacent the at least one collar, and rotationally fixed with the collar, a weight plate removably mounted on the handle adjacent the at least one collar, and a means for selectively securing the support plate to the inner plate to resist the rotation of the support plate, collar and selector knob with respect to the inner plate and handle.

An adjustable dumbbell featuring a handle containing an internal selection mechanism within series of nested weight units. The selection device is operated by a single action, in this case by turning a knob, which extends or retracts bars contained in the handle to attach a desired number of weight units to the handle.

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.