Abstract: An adjustable weight lifting device (21) includes a tube (31), a pin (33) movably disposed inside the tube (31), the pin (33) comprising an external thread (35), and one or more driving knobs (51) extending radially inward relative to an inner wall of the tube (31) and engaging with the external thread. The external thread comprises at least one portion having a first helix angle and at least one portion having a second helix angle, the second helix angle being smaller than the first helix angle.

Abstract: An adjustable weight lifting device (21) includes a tube (31), a pin (33) movably disposed inside the tube (31), the pin (33) comprising an external thread (35), and one or more driving knobs (51) extending radially inward relative to an inner wall of the tube (31) and engaging with the external thread. The external thread comprises at least one portion having a first helix angle and at least one portion having a second helix angle, the second helix angle being smaller than the first helix angle.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing upright, and having through-going openings. Neighbouring weight disks have mutually cooperating connecting arrangements which axially interconnect the weight disks but which permit radial separation. The projection lengths of the pins are stepwise selectable in order thereby to permit selection of the number of weight disks carried on the handle. The handle has, in opposing ends, connecting arrangements for interconnecting with the connecting arrangements of the innermost weight disks in the base assembly. Further, the space between the connecting arrangements of the handle is free through 360° about the handle throughout its entire length, the openings of the weight disks being centrally located.

Abstract: A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing upright, and having through-going openings. Neighbouring weight disks have mutually cooperating connecting arrangements which axially interconnect the weight disks but which permit radial separation. The projection lengths of the pins are stepwise selectable in order thereby to permit selection of the number of weight disks carried on the handle. The handle has, in opposing ends, connecting arrangements for interconnecting with the connecting arrangements of the innermost weight disks in the base assembly. Further, the space between the connecting arrangements of the handle is free through 360° about the handle throughout its entire length, the openings of the weight disks being centrally located.

Abstract: A weight apparatus includes a bar including a handle rotatably attached to an anchorage. The anchorage includes a body and at least one radially extendable and retractable pin, the pin being movable relative to the body between an innermost position and an outermost position. An end of the pin extends radially beyond an external surface of the body when the pin is in the outermost position. The apparatus further includes a weight including a weight opening in which the anchorage is adapted to be received. The weight includes a radially extending pin opening adapted to receive the pin when the pin is in the outermost position to attach the weight to the anchorage. An arrangement is provided for driving the pin to the outermost position upon rotation of the handle relative to the anchorage.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A weight apparatus includes a bar including a handle rotatably attached to an anchorage. The anchorage includes a body and at least one radially extendable and retractable pin, the pin being movable relative to the body between an innermost position and an outermost position. An end of the pin extends radially beyond an external surface of the body when the pin is in the outermost position. The apparatus further includes a weight including a weight opening in which the anchorage is adapted to be received. The weight includes a radially extending pin opening adapted to receive the pin when the pin is in the outermost position to attach the weight to the anchorage. An arrangement is provided for driving the pin to the outermost position upon rotation of the handle relative to the anchorage.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A weight apparatus includes a bar including a handle rotatably attached to an anchorage. The anchorage includes a body and at least one radially extendable and retractable pin, the pin being movable relative to the body between an innermost position and an outermost position. An end of the pin extends radially beyond an external surface of the body when the pin is in the outermost position. The apparatus further includes a weight including a weight opening in which the anchorage is adapted to be received. The weight includes a radially extending pin opening adapted to receive the pin when the pin is in the outermost position to attach the weight to the anchorage. An arrangement is provided for driving the pin to the outermost position upon rotation of the handle relative to the anchorage.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

Abstract: A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing upright, and having through-going openings. Neighbouring weight disks have mutually cooperating connecting arrangements which axially interconnect the weight disks but which permit radial separation. The projection lengths of the pins are stepwise selectable in order thereby to permit selection of the number of weight disks carried on the handle. The handle has, in opposing ends, connecting arrangements for interconnecting with the connecting arrangements of the innermost weight disks in the base assembly. Further, the space between the connecting arrangements of the handle is free through 360° about the handle throughout its entire length, the openings of the weight disks being centrally located.

Abstract: A weight apparatus includes a bar including a handle, an anchorage rotatably mounted to an end of the handle, the handle and the anchorage having an axially extending opening, a pinion gear rotatably mounted in the axially extending opening, a rod slidably disposed inside the axially extending opening and having a rack arranged to be moved axially relative to the axially extending opening upon rotation of the pinion gear, and a gear drive arrangement for rotating the pinion gear upon rotation of the handle relative to the anchorage.

Abstract: A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing upright, and having through-going openings. Neighbouring weight disks have mutually cooperating connecting arrangements which axially interconnect the weight disks but which permit radial separation. The projection lengths of the pins are stepwise selectable in order thereby to permit selection of the number of weight disks carried on the handle. The handle has, in opposing ends, connecting arrangements for interconnecting with the connecting arrangements of the innermost weight disks in the base assembly. Further, the space between the connecting arrangements of the handle is free through 360° about the handle throughout its entire length, the openings of the weight disks being centrally located.

Abstract: A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing upright, and having through-going openings. Neighbouring weight disks have mutually cooperating connecting arrangements which axially interconnect the weight disks but which permit radial separation. The projection lengths of the pins are stepwise selectable in order thereby to permit selection of the number of weight disks carried on the handle. The handle has, in opposing ends, connecting arrangements for interconnecting with the connecting arrangements of the innermost weight disks in the base assembly. Further, the space between the connecting arrangements of the handle is free through 360° about the handle throughout its entire length, the openings of the weight disks being centrally located.