US 11,766,589 B2
Manual treadmill which can be set to an exercise speed
Hung-Mao Liao, Taichung (TW); and Joe Chen, Taichung (TW)
Assigned to Johnson Health Tech Co., Ltd., Taichung (TW)
Filed by Johnson Health Tech. Co., Ltd., Taichung (TW)
Filed on May 24, 2021, as Appl. No. 17/329,108.
Application 17/329,108 is a continuation of application No. 16/423,121, filed on May 27, 2019, granted, now 11,027,168.
Prior Publication US 2021/0275861 A1, Sep. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A63B 22/02 (2006.01); A63B 21/00 (2006.01); A63B 21/005 (2006.01); A63B 24/00 (2006.01); A63B 71/06 (2006.01)
CPC A63B 22/02 (2013.01) [A63B 21/0058 (2013.01); A63B 21/00192 (2013.01); A63B 24/0062 (2013.01); A63B 2024/0093 (2013.01); A63B 2071/0658 (2013.01); A63B 2220/30 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A treadmill, comprising:
a frame having a front end and a rear end;
a front roller rotatably coupled to the frame at the front end;
a rear roller rotatably coupled to the frame at the rear end;
a continuous belt rotatably mounted about the front roller and the rear roller, having a top surface that is movable between the front end and the rear end of the frame for allowing a user to perform walking, jogging or running thereon and movement of the user driving the continuous belt to rotate with respect to the frame;
a sensor configured to detect a rotation speed of the continuous belt; and
a control unit configured to control a resistance of the continuous belt and an elevation angle of the top surface of the continuous belt for adjusting the rotation speed of the continuous belt;
wherein when the rotation speed of the continuous belt is slower than a predetermined speed, the control unit is operable to decrease the resistance of the continuous belt; when the rotation speed of the continuous belt is faster than the predetermined speed, the control unit is operable to increase the resistance of the continuous belt; and wherein when the rotation speed of the continuous belt is slower than the predetermined speed and when the resistance of the continuous belt has reached a lower limit of available resistance settings, the control unit is operable to increase the elevation angle of the top surface of the continuous belt to further increase the rotation speed of the continuous belt.