Dumbbell

1. A dumbbell with a selectable number of weight disks and comprising:

a base assembly in which a first and second set of separate weight disks standing upright are insertable, the weight disks having openings which lie in alignment with one another when the weight disks stand in the base assembly, a handle with in members axially projectable in opposing directions for insertion in the openings of the weight disks, the projection lengths of the pin members from the handle being selectable in order thereby to permit a selection of the number of weight disks accommodated on the handle, and neighbouring weight disks and the handle having mutually cooperating connecting means which are disposed, in the axial direction of the dumbbell, to interconnect neighbouring weight disks with one another and the handle, but, in a radial direction, to permit separation of one weight disk from a neighbouring weight disk and the handle, respectively, wherein the handle has locking means for directly engaging with and thereby locking the in members in selected projection positions on lifting of the dumbbell up out of the base assembly.

2. The dumbbell as claimed in claim 1 , wherein the handle at opposing ends has housings which may be accommodated in corresponding seats in the base assembly at least one housing and at least one seat have alignment means for alignment of the handle in the direction of rotation about the longitudinal axis of the handle; and the seats have blocking means which are disposed to block the locking means of the handle when the handle is located in the base assembly.

3. The dumbbell as claimed in claim 2 , wherein the pin members each have a first series of recesses which are turned to face upwards when the handle is located in the base assembly; there is provided, in each housing, a sliding portion which, under spring action, is movable to locking engagement in one of the recesses, but which, when the handle is located in the base assembly, is moved away from engagement against the spring action.

4. The dumbbell as claimed in claim 3 , wherein the housings have openings through which the blocking means extend into cooperation with the sliding portions when the handle is located in the base assembly.

5. The dumbbell as claimed in claim 3 , wherein the distance between neighbouring recesses substantially corresponds to the thickness of a weight disk.

6. The dumbbell as claimed in claim 1 , wherein the pin members each have a first series of recesses which are turned to face upwards when the handle is located in the base assembly , and there is provided, in each housing a sliding portion which, under spring action is movable to locking engagement in one of the recesses but which, when the handle is located in the base assembly, is moved away from engagement against the spring action.

7. The dumbbell as claimed in claim 6 , wherein the housings have openings through which the blocking means extend into cooperation with the sliding portions when the handle is located in the base assembly.

8. The dumbbell as claimed in claim 7 , wherein the distance between neighbouring recesses substantially corresponds to the thickness of a weight disk.

9. The dumbbell as claimed in claim 6 , wherein the distance between neighbouring recesses substantially corresponds to the thickness of a weight disk.

10. A dumbbell with a selectable number of weight disks and comprising:

a base assembly in which a first and second set of separate weight disks standing upright are insertable, the weight disks having openings which lie in alignment with one another when the weight disks stand in the base assembly, a handle with in members axially projectable in opposing directions for insertion in the openings of the weight disks, the projection lengths of the pin members from the handle being selectable in order thereby to permit a selection of the number of weight disks accommodated on the handle, and neighbouring weight disks and the handle having mutually cooperating connecting means which are disposed, in the axial direction of the dumbbell, to interconnect neighbouring weight disks with one another and the handle, but, in a radial direction, to permit separation of one weight disk from a neighbouring weight disk and the handle, respectively, wherein the handle has locking means for locking the pin members in selected projection positions on lifting of the dumbbell up out of the base assembly , wherein the pin members each have a first series of recesses which are turned to face upwards when the handle is located in the base assembly, and there is provided, in each housing a sliding portion which, under spring action is movable to locking engagement in one of the recesses but which, when the handle is located in the base assembly, is moved away from engagement against the spring action, the distance between neighbouring recesses substantially corresponds to the thickness of a weight disk, and the pin members are each provided with a second series of recesses ; the housings have spring-biased snap devices which may be snapped into the recesses in order thereby to define to a number of steps the projection lengths of the pin members, where the difference between two neighbouring projection lengths corresponds to the thickness of one weight disk and where, in these steps, the locking means of the handle are actuable.

11. A dumbbell with a selectable number of weight disks and comprising: a base assembly in which a first and second set of separate weight disks standing upright are insertable, the weight disks having openings which lie in alignment with one another when the weight disks stand in the base assembly, a handle with pin members axially projectable in opposing directions for insertion in the openings of the weight disks, the projection lengths of the pin members from the handle being selectable in order thereby to permit a selection of the number of weight disks accommodated on the handle, and neighbouring weight disks and the handle having mutually cooperating connecting means which are disposed, in the axial direction of the dumbbell, to interconnect neighbouring weight disks with one another and the handle, but, in a radial direction, to permit separation of one weight disk from a neighbouring weight disk and the handle, respectively, wherein the handle has locking means for locking the pin members in selected projection positions on lifting of the dumbbell up out of the base assembly, wherein the handle at opposing ends has housings which may be accommodated in corresponding seats in the base assembly at least one housing and at least one seat have alignment means for alignment of the handle in the direction of rotation about the longitudinal axis of the handle; and the seats have blocking means which are disposed to block the locking means of the handle when the handle is located in the base assembly, wherein the pin members each have a first series of recesses which are turned to face upwards when the handle is located in the base assembly; there is provided, in each housing, a sliding portion which, under spring action, is movable to locking engagement in one of the recesses, but which, when the handle is located in the base assembly, is moved away from engagement against the spring action, wherein the distance between neighbouring recesses substantially corresponds to the thickness of a weight disk, and the pin members are each provided with a second series of recesses; the housings have spring-biased snap devices which may be snapped into the recesses in order thereby to define to a number of steps the projection lengths of the pin members, where the difference, between two neighbouring projection lengths corresponds to the thickness of one weight disk and where, in these steps, the locking means of the handle are actuable.

12. A dumbbell with a selectable number of weight disks and comprising:

a base assembly in which a first and second set of separate weight disks standing upright are insertable, the weight disks having openings which lie in alignment with one another when the weight disks stand in the base assembly, a handle with pin members axially projectable in opposing directions for insertion in the openings of the weight disks, the projection lengths of the pin members from the handle being selectable in order thereby to permit a selection of the number of weight disks accommodated on the handle, and neighbouring weight disks and the handle having mutually cooperating connecting means which are disposed, in the axial direction of the dumbbell, to interconnect neighbouring weight disks with one another and the handle, but, in a radial direction, to permit separation of one weight disk from a neighbouring weight disk and the handle, respectively, wherein the handle has locking means for locking the pin members in selected projection positions on lifting of the dumbbell up out of the base assembly, wherein the pin members each have a first series of recesses which are turned to fine upwards when the handle is located in the base assembly, and there is provided in each housing a sliding portion which under spring action is movable to locking engagement in one of the recesses but which, when the handle is located in the base assembly, is moved away from engagement against the spring action, the housings have openings through which the blocking means extend into cooperation with the sliding portions when the handle is located in the base assembly, wherein the distance between neighbouring recesses substantially corresponds to the thickness of a weight disk, and the pin members are each provided with a second series of recesses; the housings have spring-biased snap devices which may be snapped into the recesses in order thereby to define to a number of steps the projection lengths of the pin members, where the difference between two neighbouring projection lengths corresponds to the thickness of one weight disk and where, in these steps, the locking means of the handle are actuable.