Back exercise apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 1, 1992
Issued Date -
N/A
app pub date -
Sep 10, 1991
filing date -
Mar 8, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Back exercise apparatus has a seat and a footrest, with a first backrest pivotable about a horizontal first axis for biasing the upper portion of a person on the seat about the first axis, and a second backrest pivotable about a vertical second axis for biasing the upper portion of the person about the second axis. A gearbox selectively connects a drive to either backrest and has an input shaft connected to the drive, a pair of output shafts parallel to the input shaft and a selector for connecting the input shaft to a selected one of the output shafts for rotating the selected output shaft in either direction of rotation.
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