Abstract: A handle has enlargements between a central gripping section and cylindrically shaped opposed end sections. The opposed end sections have free ends formed with male screw threads for the minority of their axial extents. A pair of weights are similarly configured. Each weight includes an inner center, coated outer layer, and a central cylindrical bore, and bushings in the bore. A locking nut is coupled to each free end of the handle. The diameter of the free ends of the handle is less than the diameter of the bushings for the rotatable coupling there between. An end cap is secured with respect to each weight. Screws extend through each end cap and outer layer. The screws extend into the inner center to join the end caps with respect to the weights.

Abstract: A dumbbell system is provided including a base weight member and a handle rotatably attached to the base weight member. A plurality of added weights are adapted to be removably mounted to the base weight member in order to provide a compact dumbbell system which has the capability of providing several weight increments in a compact assembly. The dumbbell system is ideal for use in areas where space is limited.

Abstract: A handle has opposed ends and a central extent. A grip rotationally receives the central extent of the handle. An adjustment wheel is secured to each end of the handle. A side cover is fixedly secured to each end of the grip. A dowel disk is on the handle adjacent to one side cover with fingers and spaces. A plurality of cam bits are supported on the handle. A safety lock is within the side cover adjacent to the dowel disk. The safety lock has a first end extent and a second end extent with a radial recess and a central extent with an axial projection. A coil spring within the radial recess urges the safety lock radially outwardly.

Abstract: A weightlifting device includes a handle member, an adjustable member, a set of weight plates, and a restricting unit. The handle member has a tubular end portion. The adjustable member extends into the end portion of the handle member, and is movable axially relative to the handle member. The weight plates are attached removably to the adjustable member. The restricting unit is operable so as to arrest and permit axial movement of the adjustable member relative to the handle member.

Abstract: A kinesthetic Chi rope employs a pair of handles, each handle formed as a cylindrical rod with a resonating chamber attached to one end, the chamber having a first coil spring secured as by welding to the internal surface of the chamber and a ball bearing surrounded by the coils which causes an audible vibration when the handle is shaken. A magnet having cylindrical polarity is housed within the cylindrical rod and a second coil spring is compressed between the outer surface of the resonating chamber and the cylindrical magnet, serving as a conductor of the vibratory forces.

Abstract: Dumbbell assemblies and methods of making and using dumbbell assemblies are disclosed. The dumbbell assembly includes a dumbbell and a strap. The dumbbell includes a handle, a first end weight, and a second end weight. The strap includes a central band, a first coupling portion, and a second coupling portion. The first coupling portion is elastically secured about the first end weight and the second coupling portion is elastically secured about the second end weight.

Abstract: A multifunctional dumbbell assembly is provided, which comprises a dumbbell body and a handle strap which is detachably connected to the dumbbell body. The dumbbell body includes a handle, a first head and a second head. The heads are fixed to the opposite ends of the handle respectively. The handle strap includes a strap and two connectors which are connected to the ends of the strap respectively. Each of the first head and the second head includes: an end cover covering an end of the dumbbell body; a first coupling member having a central through hole and a cavity, an arc groove being formed in the cavity; and a second coupling member having clutch block (151) at one end, the shape of which is complementary to that of the cavity in the first coupling member, further having connector attachment portions, the second coupling member being also provided with a through hole. The dumbbell assembly is convenient and safe for use. In addition, it provides an additional exercise function.

Abstract: A plurality of weights is provided. Each weight has a central primary aperture and primary slot. Each weight has a major section and an axially offset secondary minor section. The minor section is formed with a secondary aperture and a secondary slot. A weight-lifting shaft has a plurality of cam plates. An adjustment knob is provided at each end of the shaft. Each cam plate is an irregularly shaped polygon with radially enlarged sections. In this manner cam surfaces are provided at maximum radii greater than the radii of the remainder of the cam plate. The radially enlarged sections are adapted to releasably couple selectively with the secondary aperture of the weights.

Abstract: A weight plate for use with physical fitness equipment comprising a plate body with at least a main throughbore and, possibly, other throughbores passing therethrough. The body additionally has an internal bore within the thickness of the plate body which intersects the main central throughbore. A spring loaded selector pin is movably mounted within the internal bore to selectively engage and disengage the plate body to a post positioned in the main throughbore. A handle is mounted to the selector pin externally to the plate to selectively position the selector pin.

Abstract: A dumbbell includes: a hollow grip bar having a connecting end; a weight adjusting mechanism including a screw rod extending into the grip bar and operable to rotate relative to the grip bar about a rotation axis, and a weight carrier extending into the grip bar and engaging threadedly the screw rod so as to be movable axially upon rotation of the screw rod about the rotation axis, the weight carrier having a weight-supporting part extending outwardly through the connecting end of the grip bar; and a plurality of weights, each of which is formed with an elongate notch having an enlarged central portion for extension of the weight-supporting part of the weight carrier therethrough.

Abstract: Dumbbell assembly tends to break from its outer edge, despite having a cushioning coating. Present invention discloses and claims a “groove” structure that enhances the durability of the coating at minimal cost, reducing the frequency to re-coating dumbbell weight heads.

Abstract: An adjustable dumbbell includes a shaft provided with left- and right-handed threads, two tubes sleeved around and engaging threadedly and respectively the left- and right-handed threads, a hollow grip rod sleeved on the tubes, two support units each having upper and lower support seats disposed above and below one of the tubes, and a plurality of weights each having an engaging hole section engageable with a corresponding tube. Two adjustment knob units are respectively connected to two connecting ends of the shaft to turn the shaft and to thereby move the tubes in opposite directions towards or away from the connecting ends. Each tube is movable between the support seats to selectively engage one or more engaging hole sections of the weights.

Abstract: A weightlifting device includes a handle member, an elongated adjustable member, a set of weight plates, and an elongated limiting member. The handle member has a tubular end portion. The adjustable member extends into the end portion of the handle member and is movable axially relative to the handle member. Each of the weight plates is sleeved around the adjustable member. The limiting member extends through the weight plates to thereby prevent rotation of the weight plates relative to each other.

Abstract: A weightlifting device includes a handle member, an adjustable member, a set of weight plates, and a restricting unit. The handle member has a tubular end portion. The adjustable member extends into the end portion of the handle member, and is movable axially relative to the handle member. The weight plates are attached removably to the adjustable member. The restricting unit is operable so as to arrest and permit axial movement of the adjustable member relative to the handle member.

Abstract: This invention relates to a selectorized dumbbell having a handle that can be dropped down between nested left and right stacks of weight plates. The weight plates can comprise individual weights or a pair of weight plates, one from each stack, can be connected together to form a single weight. A selector is provided to allow the user to select a desired number of weight plates from each stack and couple such weight plates to the handle to provide an adjustable weight dumbbell. Each weight includes a weight frame having at least one carrier to which a commodity weight can be fastened. The dumbbell can be shipped by the manufacturer with empty weight frames to reduce shipping costs. When the dumbbell with empty weight frames reaches a destination, the dumbbell can be completed by securing commodity weights to the carriers on the respective weight frames.

Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship at opposite ends thereof. Knobs on the handle member have contoured bearing surfaces that bear against respective selector members to alternatively hold the selector members in weight engaging positions and disengaged positions.

Abstract: A dumbbell having a bar that is set non perpendicularly to the weights of the dumbbell and has added features such as indicias that a user can quickly see in order to know which direction the dumbbell is for appropriate grasping as well as footings which orient the dumbbell so as to make it easy to use. Since the bar reorients the weights so that they do not interfere with the body, a shorter bar can be used which brings each weight closer to the other.

Abstract: A dumbbell adjusting system method comprises an adjusting system, a stand, and a locking mechanism. The adjusting system includes two rods on the dumbbell's handle which move in and out of the handle to selectively engage the inner threaded through holes of the weights. The weights are configured to interlock with one another so as not to move independently. The locking mechanism unlocks the weights from the handle when the dumbbell is in the stand, allowing the user to select the desired weight, and locks the weights into the handle when the dumbbell is lifted out of the stand.

Abstract: A dumbbell clamp for a barbell and dumbbell safety spotting apparatus [30] utilizes two spaced-apart plates [162] each having a notch [166] for retaining the grip [28] of a dumbbell [26]. A spring-biased lock bar [170] locks the dumbbell grip in the notches during normal use. A clamp bore [178] is provided for secure the dumbbell clamp to a cable [72] by use of a hook [86]. A hand switch receptacle [82] provides an electrical connector from a hand switch [88] on the dumbbell clamp to the safety spotting apparatus.

Abstract: Various embodiments of the present invention are directed to a multi-grip dumbbell. In one embodiment of the present invention, a multi-grip dumbbell includes a central handle, a first weighted head interconnected to the central handle in proximity to a first end of the central handle, and a second weighted head interconnected to the central handle in proximity to a second end of the central handle. The first weighted head is approximately evenly weighted with the second weighted head. The first weighted head includes a first weighted end handle and two weighted side handles. Similarly, the second weighted head includes a second weighted end handle and two weighted side handles.

Abstract: Various exercise systems include first and second selectorized dumbbell assemblies; and a frame having first and second weight supports to support respective dumbbell assemblies. Generally speaking, the systems assume multiple configurations to facilitate both use and storage of the dumbbell assemblies. Many of the systems include at least one body supporting platform that is movable between a first position that is suitable for exercise, and a second position that is suitable for transportation and/or storage.

Abstract: A weight bar for use with a dumbbell having an externally-threaded end is provided that includes a substantially cylindrical elongated bar having a longitudinal axis, first and second axial ends and an intermediate section extending between the axial ends. The first and second axial ends each comprise internally-threaded sections disposed substantially along the longitudinal axis of the weight bar for threadably receiving an externally-threaded end of a dumbbell. The internally-threaded sections of the first and second axial ends each comprise threads having substantially flat thread ends.

Abstract: A dumbbell includes: a hollow grip bar having a connecting end; a weight adjusting mechanism including a screw rod extending into the grip bar and operable to rotate relative to the grip bar about a rotation axis, and a weight carrier extending into the grip bar and engaging threadedly the screw rod so as to be movable axially upon rotation of the screw rod about the rotation axis, the weight carrier having a weight-supporting part extending outwardly through the connecting end of the grip bar; and a plurality of weights, each of which is formed with an elongate notch having an enlarged central portion for extension of the weight-supporting part of the weight carrier therethrough.

Abstract: An exercise device that comprises an elongated handle and a pair of wheels at each end thereof is disclosed. The handle is adapted to be held by the hand of a person and the device rolled along a surface. The handle includes a wheel attachment means at both ends thereof, such as a threaded axle. Each wheel includes a bearing means attached to the wheel proximate a center point of the wheel, and may further include a high-friction non-slip surface along an outer peripheral edge thereof. Each wheel may also further include a weighted mass such that each exercise device may be also used as a dumbbell. In use, the person grasps the handle of at least one exercise device and positions himself on the surface, holding himself above the surface by the at least one exercise device. The person may then perform exercises by rolling the at least one exercise device along the surface.

Abstract: This invention relates to a selectorized dumbbell having a handle that can be dropped down between nested left and right stacks of weight plates. The weight plates can comprise individual weights or a pair of weight plates, one from each stack, can be connected together to form a single weight. A selector is provided to allow the user to select a desired number of weight plates from each stack and couple such weight plates to the handle to provide an adjustable weight dumbbell. Each weight plate comprises a pair of thinner or partial thickness weight subplates that are abutted and welded together, e.g. a ½? weight plate is formed by a pair of ¼? weight subplates. This substantially decreases the cost of manufacturing the selectorized dumbbell.

Abstract: A dumbbell and incremental weight plate for same are disclosed herein comprising a bar that extends generally axially between opposing end regions, a weight plate mass mounted about the bar at each end region, and at least one incremental weight plate mountable on said weigh plate mass. One of the weight plate mass and incremental weight plate has at least a pair of such regions with a north magnetic pole and a south magnetic pole. The other of the weight plate mass and incremental weight plate has at least one magnetic region constituting a magnetic pole.

Abstract: A dumbbell having weight plates onto which magnetically coupled incremental weight plates can be securely mounted comprises a bar, weights at the end regions of the bar, means for retaining the weight plates at the respective ends to define a handle region therebetween, and a sleeve of generally annular cross-section securely mounted about the bar at least one end region axially outward from the weight plate, said sleeve member having (a) a hub portion for accommodating the through-opening of a weight plate, and (b) a flange portion of greater exterior dimension than the hub portion and having at least one magnetically-responsive region for magnetically securing an incremental weight to the dumbbell when said incremental weight plate is mounted about said hub region. In accordance with the invention, an adaptor to convert conventional dumbbells to utilize magnetically-coupled incremental weight plates comprises elements (a) and (b) above.

Abstract: Weight selecting members are movably mounted on a handle assembly and selectively rotatable into engagement with respective weight plates to provide adjustable resistance to exercise movement. The weight selecting members rotate into and out of notches associated with any combination of the weight plates.

Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship at opposite ends thereof. Weight selectors are rotatable into and out of engagement with different combinations of the weight plates to secure a desired amount of mass to the handle. The weight selectors occupy respective upwardly closed notches in the weights to secure the weights to the handle member. Different arrangements may be used to bias the weight selectors toward desired orientations relative to the weight plates, and/or to lock the weight selectors in desired orientations relative to the weight plates.

Abstract: Each of a plurality of weights has a central hole and a slot extending through the central hole. A shaft has a grip handle. A rotatable spindle extends through the grip handle with a plurality of cam plates adjacent to each end of the spindle and an adjustment knob at each end of the spindle. The cam plates each have an outer diameter adapted to fit the central hole of a weight. The weights include a set of weights positioned adjacent to each end of the rotatable spindle and adjacent to the cam plates. A holder is cooperable with the shaft with protrusion blocks adapted to cooperate with the shaft to form a self-locking mechanism.

Abstract: On some embodiments, a vertical stack of weights is disposed beneath a base member, and at least one selector rod is rotatably mounted on the base member and selectively rotated into engagement with a desired number of the vertically stacked weights. On other embodiments, a horizontal stack of weights is disposed on opposite sides of a base member, and at least one selector rod is movably mounted on the base member and selectively moved into engagement with the desired number of horizontally stacked weights. On still other embodiments, these two types of arrangements are implemented in combination. Various methods may be performed using various combinations of these arrangements to provide adjustable resistance to exercise. In one such method, a base member is lifted by grasping a handle that extends longitudinally between first and second weight engaging ends of the base member.

Abstract: 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.

Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship at opposite ends thereof. Knobs on the handle member have contoured bearing surfaces that bear against respective selector members to alternatively hold the selector members in weight engaging positions and disengaged positions.

Abstract: An exercise device providing an exterior sheath for a standard Olympic weight bearing bar that secures the bar and weight while providing access to the bar for gripping and also providing secure handles which are perpendicular to the bar and parallel to the torso, providing alternate gripping posture for alternate exercise paradigms.

Abstract: A hand-held exercise device exercise device incorporating a variable stability strength overload distribution system resulting from the even or uneven distribution of weight relative to a center of gravity thereof. The even or uneven distribution of weight providing the variable stability strength overload distribution system results from the attached of a selected number of weights along first, second and/or third planes, each generally parallel to a handle assembly thereof.

Abstract: A weight bench apparatus for to allow a user to lift weights without a spotter. The weight bench apparatus includes a bench assembly being designed for being positioned on a support surface and for supporting the user. A pair of support assemblies is pivotally coupled to the bench assembly for supporting a weight training member being used by the user. A foot assembly is operationally coupled to the bench assembly. The foot assembly is operationally coupled to the support assemblies whereby the foot assembly pivots the support assemblies from a vertical position to a substantially horizontal position to allow the user to freely use the weight training member when the foot assembly is actuated by feet of the user. The support assemblies are designed for receiving the weight training member when the support assemblies are actuated by the foot assembly and pivoted back to a vertical position.

Abstract: An adjustable dumbbell device includes a handle, a number of weights each having a channel to slidably receive an end portion of the handle, and a latch slidably engaged onto the end portion of the handle and engageable into the channels of a selected number of the weights, to secure the selected number of the weights to the end portion of the handle. A securing device may be used for securing the latch to the end portion of the handle, and includes one or more beams attached to the end portion of the handle, and a spring biasing catch may catch the latch to the beams or the end portion of the handle.

Abstract: This design is placed and or positioned in the periphery of weight creating a semi-protective and semi-recessed area for insertion of a hand or hand like device. The size and shape of the area reduces the potential for unattended and damaging interaction between the hand and its digits or the hand-like devices and the sides of the mass. The curvature of the area along with the width being of sufficient size to facilitate grasping during human interaction of the opening are purposefully designed to ergonomically fit the hand and or hand like device for a plurality of uses. The functionality of the device is to generally distribute the stress and forces applied to the point of interaction between the human user and the contact area of the heavy and or cumbersome object. Substantially increasing the controllability during mass manipulation by purposeful human interaction.

Abstract: A weight plate have integrally formed handles is provided. The weight plate has a weight plate body having an outer periphery, a first side, and a second side that is substantially flat. The weight plate also has a central bore extending through the body, a raised flange member forming a portion of the outer periphery on the first side, and at least one handle opening extending through the body and through ht least a portion of the outer periphery. The handle formed by each handle opening, the corresponding recess, and the raised flange member is sufficient for a human hand to grip. In one embodiment, the weight plate further includes an interlock for interlocking the weight plate with another weight plate when positioned together. In another embodiment, the weight plate further includes a pock defined in the weight plate. The pock allows the weight of the weight plate to be adjusted to a desired weight by allowing additional material to be added to the pock.

Abstract: Adjustable lifting apparatus, comprising, in combination, a base, multiple cords connected to the base, a mover to be moved along a slide path in response to force exertion by the user's arms or legs, a connection or connections between the mover and one or more of the cords.

Abstract: A kettlebell is disclosed herein having, in its preferred embodiment, a pair of oppositely-facing, generally frustum-shaped weightplates disposed about a first axis that is perpendicular to the axis of its handle. The frustum shape reduces the force of impact against the user's forearm during certain exercise movements. The preferred handle includes places which can be held between the user's thumb and remaining fingers for improved control during other exercise movements.

Abstract: A dumbbell including a tubular handle with a thread on the inside surface of the tube. A straight groove that cuts through the internal thread is also formed on the inside surface of the tubular handle. A stop plate is mounted on each end of the tubular handle. A pair of retainers are provided, each retainer being a shaft with a retainer plate on one end. Each shaft has a partial thread on its outside surface extending the length of the respective shaft. A weight plate stack is mounted on the shaft and the shaft is securely inserted into the tubular handle by aligning the partial thread with the groove, sliding the shaft through openings in the weight plates into the tubular handle, then rotating each shaft to where the partial thread on the shaft engages the interior thread of the tubular handle.

Abstract: 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.

Abstract: This invention relates to a selectorized dumbbell having a handle that can be dropped down between nested left and right stacks of weight plates. The weight plates can comprise individual weights or a pair of weight plates, one from each stack, can be connected together to form a single weight. A selector is provided to allow the user to select a desired number of weight plates from each stack and couple such weight plates to the handle to provide an adjustable weight dumbbell. Each weight includes a weight frame having at least one carrier to which a commodity weight can be fastened. The dumbbell can be shipped by the manufacturer with empty weight frames to reduce shipping costs. When the dumbbell with empty weight frames reaches a destination, the dumbbell can be completed by securing commodity weights to the carriers on the respective weight frames.

Abstract: Discrete weight selecting members are movably mounted on a handle assembly and selectively rotatable into engagement with respective weight plates to provide adjustable resistance to exercise movement. Adjustable resistance to exercise is provided by rotatably mounting individual weight selectors on a bar, moving the bar into alignment with a group of weights, and rotating respective weight selectors into engagement with desired weights.

Abstract: A weight lifting device includes a handle having two end segments, a number of weight members each having a slot to receive either of the end segments of the handle, and an anchor plate rotatably attached to each of the weight members and having an opening selectively aligned with the slot of the weight member, to selectively receive either of the end segments of the handle. The anchor plate is rotatable relative to the weight member to offset the opening of the anchor plate from the slot of the weight member, and to selectively anchor the weight member to the handle. The desired number of weight members may thus be selectively attached to the handle.

Abstract: A dumbbell adjusting system comprises an adjusting system, a stand, and a locking mechanism. The adjusting system includes two rods on the dumbbell's handle which move in and out of the handle to selectively engage the inner threaded through holes of the weights. The weights are configured to interlock with one another so as not to move independently. The locking mechanism unlocks the weights from the handle when the dumbbell is in the stand, allowing the user to select the desired weight, and locks the weights into the handle when the dumbbell is lifted out of the stand.

Abstract: Weight head assembly for dumbbells that eliminates a weak point on the handle bar, so as to increase the durability of a handle bar on dumbbells. Under present invention, the ‘stub’ portion, where the handlebar is inserted into the weight heads on the two ends of the bar, need not be machined down in size at the junction point between handle bar and weight head, and can thus withstand more wear and tear for regular usage in fitness training. The cost of manufacturing the handle bar, and as a result of the increase durability, will help the fitness industry greatly when making new dumbbells.

Abstract: Exercise dumbbells have pairs of weights disposed at opposite ends of a handle. Selector rods are selectively movable into engagement with various combinations of the weights.

Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship relative thereto. The handle member has a dedicated weight selector for each of the weight plates. Each weight selector is movable into and out of engagement with a respective weight plate. As a result, different combinations of the weight plates may be secured to the handle.