초록 ▼

The specification discloses a self propelled stress testing apparatus for providing graded levels of exercise and for measuring human energy output. An adjustable frictional load calibrated in terms of patient weight and operatively coupled to a pair of translational platforms provides the exercisin

The specification discloses a self propelled stress testing apparatus for providing graded levels of exercise and for measuring human energy output. An adjustable frictional load calibrated in terms of patient weight and operatively coupled to a pair of translational platforms provides the exercising drag force to a flywheel against which the effort of the user is applied. Reciprocal exercising motion applied to the translational platforms is converted into rotary motion via a pair of unidirectional sprockets. Alternative embodiments employing bifilar and elastically centered slideable guide platform configurations are disclosed as well as special adaptions for use in a weightless space environment.

대표청구항 ▼

A stress testing device comprising: a base frame; a first pedal platform; first suspension means attached to said base frame and said first pedal platform for mounting said first pedal platform so as to permit said first pedal platform to translate at an inclined angle with respect to said base fram

A stress testing device comprising: a base frame; a first pedal platform; first suspension means attached to said base frame and said first pedal platform for mounting said first pedal platform so as to permit said first pedal platform to translate at an inclined angle with respect to said base frame; a second pedal platform; second suspension means attached to said base frame and said second pedal platform for mounting said second pedal platform so as to permit said second pedal platform to translate at an inclined angle with respect to said base frame; a flywheel journeled to rotate with respect to said base frame; linkage means for connecting said first and second pedal platforms together so as to produce a reciprocal translational motion between said first and second pedal platforms; energy transfer means coupled to said linkage means and said flywheel for converting the reciprocal translation motion of said first and second pedal platforms into a unidirectional rotary motion of said flywheel; wherein said linkage means comprises a first chain having one end attached to said first pedal platform and having the other end attached to said second pedal platform, and a second chain having one end attached to said first pedal platform and having the other end attached to said second pedal platform and wherein said energy transfer means comprises a first ratchet sprocket journaled to rotate in a plane parallel to the plane of rotation of said flywheel and a second ratchet sprocket journaled to rotate in a plane parallel to the plane of rotation of said flywheel and wherein said first ratchet sprocket is positioned to engage said first chain and wherein said second ratchet sprocket is positioned to engage said second chain and coupling means for summing the output motion of said first and second ratchet sprockets whereby said motion will be coupled to said flywheel so as to cause said flywheel to be driven in the same direction when a force is applied to either pedal platform.