Power stairclimber

Details Power stairclimber Power stairclimber

1990-05-11

1991-08-13

Crow, Stephen R.

Undertaking

128 25R, A63B 2304

Patent

active

050390872

ABSTRACT:
This invention relates to a power stairclimber and in particular to one including a base on which there are mounted a pair of pedals and a handlebar, a gear pivoted on the base, two driving rods respectively mounted on two sides of the gear and arranged at opposite directions, two cranks rotatably connected at one end with the lugs of the base and at the other end with the driving rods and a worm gear meshed with the gear and having on the top a pulley which is in turn connected with a motor via a belt.

REFERENCES:
patent: 2042764 (1932-06-01), Birch
patent: 4830362 (1989-05-01), Ball
patent: 4848737 (1989-07-01), Ehrenfield

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