Exercise devices – Having specific electrical feature – Equipment control
Patent
1998-07-03
1999-08-17
Richman, Glenn E.
Exercise devices
Having specific electrical feature
Equipment control
482 6, 482 55, 434247, A63B 6912
Patent
active
059385650
ABSTRACT:
An instructional, training, and assessment apparatus is provided for use in the activity of swimming. The apparatus includes a cable having a proximal end and a distal end, and a harness for coupling the distal end of the cable to a swimmer. The distal end of the cable is formed to include a short length of increased diameter. A motorized drum mechanism is coupled to the proximal end of the cable for winding and unwinding the cable to apply forces to the swimmer as the swimmer swims laps in a body of water. A pressure roller applies pressure to the cable as it is wound and unwound in single layer upon the drum. A bailer sheave and idler roller engaged with the sheave and mounted on shafts transverse to the drum guide the cable loops in even rows onto the drum. A cable diameter limit sensor coupled to the bailer sheave and the motorized drum senses the increased diameter of the distal end of the cable and produces a corresponding output signal. Cable speed and force sensors are provided for generating output signals responsive to the speed of and force exerted on the cable. The apparatus also includes a controller responsive to the output signal from the force sensor and the speed sensor and to an external speed parameter represented by a reference signal for controlling the forces applied by the winding and unwinding mechanism to the swimmer while the swimmer is swimming in a body of water. The controller additionally receives the output signal from the cable diameter sensor and when the output signal becomes true, the controller halts the winding action of the motorized drum thereby halting the cable.
REFERENCES:
patent: 4114874 (1978-09-01), Mattilla
patent: 5391080 (1995-02-01), Bernacki et al.
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