Exercise devices – Having specific electrical feature – Equipment control
Patent
1992-06-11
1994-05-24
Apley, Richard J.
Exercise devices
Having specific electrical feature
Equipment control
482 4, 482 54, 482900, 482901, 7337906, 340573, A63B 2400
Patent
active
053143914
ABSTRACT:
A motor-driven treadmill includes a stationary ultrasonic range finder which continuously measures the distance to the torso of a person walking or running on the moving tread of the treadmill. When the person approaches too closely to the front of the treadmill, the treadmill speed and/or the treadmill slope are increased; and when the person retreats too far away from the front of the treadmill, the treadmill speed and/or the treadmill slope are decreased. The response of the treadmill speed and/or slope control system may be improved by making the controller responsive to the rate of change of the distance between the person using the treadmill and the front of the treadmill, so as to provide anticipation of the distances which will be traversed by the user of the treadmill.
REFERENCES:
patent: 1919627 (1933-07-01), Fitz Gerald
patent: 3383678 (1968-05-01), Palmer
patent: 3602502 (1971-08-01), Hampl
patent: 4708337 (1987-11-01), Shyn
patent: 4919416 (1990-04-01), DeCloux
patent: 4958835 (1990-09-01), Tashiro et al.
patent: 5089960 (1992-02-01), Sweeney, Jr.
Burns Stephen K.
Jentges Carl J.
Potash Richard J.
Potash Robert L.
Apley Richard J.
Cheng Joe H.
Computer Sports Medicine, Inc.
Lessler Arthur L.
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