Underwater treadmill device
First Claim
Patent Images
1. A treadmill device comprising:
- a frame;
an endless treadmill belt;
a drive roller and an idler roller coupled to said frame and engaging opposite ends of said endless treadmill belt, said drive roller comprising a first outer portion terminating in a first edge and a second outer portion terminating in a second edge, said first outer portion having a diameter of increasing cross-section in a direction of said first edge and said second outer portion having a diameter of increasing cross-section in a direction of said second edge; and
a fluid-powered motor directly coupled to said drive roller, said fluid-powered motor imparting rotary motion to said drive roller.
2 Assignments
0 Petitions
Accused Products
Abstract
An underwater treadmill device is provided and includes a drive roller and an idler roller engaging opposite ends of a treadmill belt. A hydraulic motor is directly coupled to the drive roller for imparting rotary motion to the drive roller and the treadmill belt. The hydraulic motor is driven by a remotely located pump and electrical motor. The electrical motor drives the pump and thereby controls the speed of the hydraulic motor. The speed of the electrical motor may be controlled by a remote control unit which transmits signals in the electromagnetic spectrum. The idler roller does not include any bearings as a substantially frictionless portion rotates about another portion.
127 Citations
27 Claims
-
1. A treadmill device comprising:
-
a frame; an endless treadmill belt; a drive roller and an idler roller coupled to said frame and engaging opposite ends of said endless treadmill belt, said drive roller comprising a first outer portion terminating in a first edge and a second outer portion terminating in a second edge, said first outer portion having a diameter of increasing cross-section in a direction of said first edge and said second outer portion having a diameter of increasing cross-section in a direction of said second edge; and a fluid-powered motor directly coupled to said drive roller, said fluid-powered motor imparting rotary motion to said drive roller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A treadmill device comprising:
-
a frame; an endless treadmill belt; a drive roller and an idler roller coupled to said frame and engaging opposite ends of said endless treadmill belt, said idler roller does not comprise bearings; and a motor coupled to said drive roller, said motor imparting rotary motion to said drive roller. - View Dependent Claims (19, 20, 21, 22, 23)
-
-
24. A treadmill device comprising:
-
a frame; an endless treadmill belt; a drive roller and an idler roller coupled to said frame and engaging opposite ends of said endless treadmill belt; a fluid-powered motor coupled to said drive roller, said fluid-powered motor imparting rotary motion to said drive roller; a fluid pump driving said fluid-powered motor; a variable speed drive motor driving said fluid pump; and a remote control unit transmitting a signal in the electromagnetic spectrum to control a speed of said variable speed motor. - View Dependent Claims (25)
-
-
26. A treadmill device comprising:
-
a frame; an endless treadmill belt; a flexible platform extending between an upper and lower course of said treadmill belt, said flexible platform providing support for said upper course of said treadmill belt and a cushion for each step taken on said treadmill belt; a drive roller and an idler roller coupled to said frame and engaging opposite ends of said endless treadmill belt, said idler roller comprising a substantially frictionless first roller superposed over a second roller; a fluid-powered motor coupled to said drive roller, said fluid-powered motor imparting rotary motion to said drive roller; a fluid pump driving said fluid-powered motor; a variable speed drive motor driving said fluid pump; a remote control unit transmitting a signal in the electromagnetic spectrum to control a speed of said variable speed motor; and at least one negative pressure fastening device coupled to said frame for securing said frame to a surface.
-
-
27. A treadmill device comprising:
-
a frame; an endless treadmill belt; a drive roller and an idler roller coupled to said frame and engaging opposite ends of said endless treadmill belt, said drive roller comprising a crowned inner portion; and a fluid-powered motor directly coupled to said drive roller, said fluid-powered motor imparting rotary motion to said drive roller.
-
Specification