Machine for physical exercise
AssigneeGirotto Brevetti Srl
InventorsAdriano GIROTTO, Stefano CESA
Life of this patent
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Abstract
An improved machine (MC) for physical exercise is described. To simplify the structure it comprises an object (14) displaceable by a user through muscular effort and connected to a device (M1, M8) for generating a resistance force, wherein the device comprises a magnet (36; 92) and a piece (38; 90) responsive to the magnetic field of the magnet which have facing surfaces (U1, U2, U3, U4), each of which extend respectively along two parallel axes, and are mounted to slide relatively along one of said parallel axes overlapping progressively and, through mutual magnetic interaction, to develop a mutual attractive repulsive force (Fm).
Claims27
Machine (MC) for physical exercise comprising:
- an object (14) displaceable by a user through muscular effort and connected to a device (M1, . . . , M8) for generating a resistance force, wherein the device comprises a magnet (36;
- 92) and a piece (38;
- 90) responsive to the magnetic field of the magnet which
- (i) have facing surfaces (U1, U2, U3, U4), each of which extend respectively along an axis, such axes being parallel to each other, and
- (ii) are mounted to slide relatively along one of said parallel axes overlapping progressively and, through mutual magnetic interaction, to develop a mutual attractive or repulsive force (Fm),
- wherein the polar axes of the magnet and/or of the piece are oriented orthogonally to said parallel axes.
Machine according to any one of the preceding claims, wherein the magnet or the piece (62) comprises a shell (90) or two portions (62) delimiting a cavity inside which the other is movable, preferably through translation.
Machine according to any one of the preceding claims, wherein the facing surfaces (U1, 30 U2) are flat or curved, preferably complementary to each other.
Machine according to any one of the preceding claims, wherein the facing surfaces (U3, U4) are enclosed coaxially one inside the other.
Machine according to any one of the preceding claims, wherein the facing surfaces are shaped so that along said parallel axes their profile has a curved trend or variable distance from said parallel axes.
Machine according to any one of the preceding claims, comprising a positioning device (40) for varying the distance, measured perpendicularly to said parallel axes, between the magnet (36) and the piece (38);
- or the distance between said parallel axes.
Machine according to any one of the preceding claims, wherein the magnet and the piece are respectively comprised in:
- a first structure (24) comprising elements (26) which are arranged comb-like and comprise magnetic material,
- a second structure (40) comprising elements (42) which are arranged comb-like and comprise material responsive to the magnetic field of said magnetic material, wherein
- the elements of one structure delimit between one another channels (49) occupied by elements of the other structure and the two structures are relatively movable along a sliding direction (X), and
- the elements (26) comprising magnetic material comprise a polar axis that is substantially orthogonal to the sliding direction and is facing elements comprising material responsive to the magnetic field of the second structure.
Machine (MC2) according to any one of the preceding claims, comprising a coil mounted to enclose flux resulting from such polar axes.
Machine according to any one of the preceding claims, comprising a means or sensor for detecting the mutual, attractive or repulsive force that is developed with the machine in idle state.
Method for generating resistance force (Fm) in a machine (MC) for physical exercise, wherein the force is applied to an object (14) displaceable by a user (U) via muscular effort,
- wherein the force is derived from the mutual magnetic interaction between a magnet (36;
- 92) and a piece (38;
- 90), responsive to the magnetic field of the magnet, which have facing surfaces (U1, U2, U3, U4) each of which extend along an axis, such axes being parallel to each other, and are mounted for sliding relatively along one said axis for progressively overlapping;
- wherein the polar axes of the magnet and/or of the piece are oriented orthogonally to said parallel axes.
Dependencies are inferred from the claim text.