Exercise resistance device with magnets
AssigneeKurt Manufacturing Company, Inc.
InventorDuane G. Schroeder
Life of this patent
Estimating the term…
Abstract
An exercise resistance device for use in an exercise apparatus includes a rotatable shaft and an impeller rotatable within a fluid filled sealed chamber. A rotating member is joined for rotation with the rotatable shaft. The rotating member is external to the sealed chamber and is magnetically coupled to the impeller.
Claims29
An exercise resistance device for use in an exercise apparatus, the resistance device comprising:
- a rotatable shaft;
- an impeller rotatable within a fluid filled sealed chamber;
- a rotating member joined for rotation with the rotatable shaft, the rotating member being external to the sealed chamber and magnetically coupled to the impeller;
- at least one first magnet provided on the impeller and at least one second magnet provided on the rotating member;
- and
- a housing forming the sealed chamber, the housing including a bowl portion joined to a thin plate member that faces the rotating member and is disposed between the first and second magnets, the bowl portion and the thin plate member being separable and having a stationary seal formed therebetween.
A bicycle exercise resistance device comprising:
- a support member;
- a roller rotatable on the support member, the roller being adapted to engage a tire of a bicycle;
- an impeller rotatable within a fluid filled sealed chamber;
- a rotating member joined for rotation with the roller, the rotating member being external to the sealed chamber and magnetically coupled to the impeller;
- at least one first magnet provided on the impeller and at least one second magnet provided on the rotating member;
- and
- a housing forming the sealed chamber, the housing including a bowl portion joined to a thin plate member that faces the rotating member and is disposed between the first and second magnets, the bowl portion and the thin plate member having a stationary seal formed therebetween.
An exercise resistance device for use in an exercise apparatus, the resistance device comprising:
- a rotatable shaft;
- an impeller rotatable within a fluid filled sealed chamber;
- a rotating member joined for rotation with the rotatable shaft, the rotating member being external to the sealed chamber;
- and
- means for magnetically coupling the rotating member to the impeller, said means including an impeller with a high-permeability magnetic material portion and at least one magnet.
An exercise resistance device for use in an exercise apparatus, the resistance device comprising:
- a rotatable shaft;
- an impeller rotatable within a fluid filled sealed chamber, wherein the impeller includes a high-permeability magnetic material portion and at least one magnet;
- and
- a rotating member joined for rotation with the rotatable shaft, the rotating member being external to the sealed chamber and magnetically coupled to the impeller.
A bicycle exercise resistance device comprising:
- a support member;
- a roller rotatable on the support member, the roller being adapted to engage a tire of a bicycle;
- an impeller rotatable within a fluid filled sealed chamber, wherein the impeller includes a high-permeability magnetic material and at least one magnet;
- and
- a rotating member joined for rotation with the rotatable shaft, the rotating member being external to the sealed chamber and magnetically coupled to the impeller.
Dependencies are inferred from the claim text.