초록 ▼

An infinitely adjustable elevation system for a treadmill is disclosed. The treadmill has a frame having a pair of spaced side rails and a pair of spaced uprights extending upwardly from the front ends of the side rails. The elevation system comprises a pair of generally vertical, rigid, elongate me

An infinitely adjustable elevation system for a treadmill is disclosed. The treadmill has a frame having a pair of spaced side rails and a pair of spaced uprights extending upwardly from the front ends of the side rails. The elevation system comprises a pair of generally vertical, rigid, elongate members, each of which is carried by a respective side rail and which is movably mounted within a respective upright. Each of the elongate members is movable in a generally axial, vertical direction relative to its side rail between a retracted position in which the jogging surface of the treadmill is in substantially horizontal position, and an extended position in which the front of the treadmill (and the jogging surface) is inclined upwardly. The elevating system comprises a single power operated drive for positively moving both of the elongate members simultaneously in either axial direction between their stated retracted and extended positions and for positively holding them in any desired position with the elongate members supporting the front of the treadmill.

대표청구항 ▼

An infinitely adjustable elevation system for a treadmill, the latter comprising an elongate frame having a pair of spaced side rails extending from front to rear, a front and a rear horizontal roller interposed between said side rails, and an endless belt entrained around said rollers with the uppe

An infinitely adjustable elevation system for a treadmill, the latter comprising an elongate frame having a pair of spaced side rails extending from front to rear, a front and a rear horizontal roller interposed between said side rails, and an endless belt entrained around said rollers with the upper surface of the belt constituting a jogging or walking surface for supporting a user of the treadmill, the frame having fixed supporting foot pads at the rear thereof and having a pair of spaced uprights at the front thereof extending generally upwardly from said side rails, said elevation system comprising a pair of generally vertical rigid elongate members, each of which is carried by a respective side rail at the front thereof and is movably mounted within a respective upright, said elongate members each being movable in generally axial, vertical direction relative to therein respective said side rails between a retracted position in which said jogging surface of said treadmill is substantially horizontal, and an extended position in which the front of the jogging surface is inclined upwardly, said elevating system further comprising a guide surface disposed within each of said uprights which extends at an angle to said generally vertical rigid elongate members, a roller carried on the upper end of each of said elongate members and engageable with a respective angularly extending guide surface for maintaining said elongate members in substantially vertical position as said elongated members are driven between retracted and extended positions, and positive drive means for moving said elongate members between retracted and extended positions and including guide elements for engaging said elongate members at a distance spaced from each roller and cooperating guide surface, for assisting in maintaining said elongate members in substantially vertical position.