Undertaking
Patent
1987-06-03
1989-07-04
Apley, Richard J.
Undertaking
A63B 2306
Patent
active
048444499
ABSTRACT:
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.
REFERENCES:
patent: 1870244 (1932-08-01), Elston
patent: 2115632 (1938-04-01), Hanley
patent: 2233055 (1941-02-01), Kennedy
patent: 4286649 (1981-09-01), Rokop et al.
patent: 4426075 (1984-01-01), Otte
patent: 4601466 (1986-07-01), Lais
Quinton Instrument; 272/69; 1974; pp. 1, 2, 7, 27 and 31.
Apley Richard J.
Flaxman Howard
True & True
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