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US 6,551,220 B1Granted
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.
Claims18
An exercise resistance device for use in an exercise apparatus of an overall size and configuration appropriate for bicycling-type exercise, the resistance device comprising:
- a rotatable shaft;
- an impeller rotatable within a fluid filled sealed chamber;
- and
- a rotating member joined for rotation with the rotatable shaft, the rotating member being external to the fluid filled sealed chamber and magnetically coupled to the impeller;
- a housing forming the fluid filled sealed chamber, the housing including two joinable portions forming a stationary seal therebetween;
- and
- a third housing portion joined to one of the two housing portions, the third housing portion supporting the rotating member in position to rotate and be magnetically coupled to the impeller.
4 more elements
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;
- 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 fluid filled sealed chamber and magnetically coupled to the impeller;
- a housing forming the fluid filled sealed chamber, the housing including two joinable portions forming a stationary seal therebetween;
- and
- a third housing portion joined to one of the two housing portions, the third housing portion supporting the rotating member in position to rotate and be magnetically coupled to the impeller.
5 more elements
Dependencies are inferred from the claim text.