Back exercise apparatus
AssigneeBaltimore Therapeutic Equipment Co.
InventorsJames A. McArthur, David C. Short
Life of this patent
Estimating the term…
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.
Claims10
Back exercise apparatus for applying forces to a human body to exercise the back, comprising:
- a seat for supporting a person, said seat having a longitudinal centerline;
- footrest means for supporting the feet of the person;
- knee countersupport means spaced from said footrest means for overlying engagement with the patient's knees to retain the patient's legs against displacement upwardly from said footrest means,
- first force applying means pivotable about a horizontal first axis for biasing the upper portion of the person about said first axis;
- second force applying means pivotable about a vertical second axis for biasing the upper portion of the person about said second axis;
- the vertical plane containing the longitudinal centerline of said seat passing through at least a portion of said second force applying means;
- and
- motor driven drive means for supplying biasing forces to said first and second force applying means to bias said first and second force applying means for movement about said first and second axes, respectively.
Back exercise apparatus for applying forces to a human body to exercise the back, comprising:
- a seat for supporting a person;
- footrest means for supporting the feet of the person;
- means for restraining the person in position relative to said seat and said footrest means;
- first force applying means pivotable about a horizontal first axis for biasing the upper portion of the person about said first axis;
- second force applying means pivotable about a vertical second axis for biasing the upper portion of the person about said second axis;
- drive means for supplying biasing forces to said first and second force applying means to bias said first and second force applying means for movement about said first and second axes, respectively;
- and
- gearbox means for selectively connecting said drive means to either of said first and second force applying means,
- said gearbox means comprising:
- an input shaft connected to said drive means;
- a pair of mutually axially aligned output shafts parallel to said input shaft;
- means for selectively connecting said input shaft to a selected one of said output shafts for rotating said selected output shaft in either direction of rotation;
- and
- means for transmitting rotations of said first and second output shafts to said first and second force applying means, respectively.
Back exercise apparatus back exercise apparatus for applying forces to a human body to exercise the back, comprising:
- a seat for supporting a person;
- footrest means for supporting the feet of the person;
- knee countersupport means spaced from said footrest means for overlying engagement with the patient's knees to retain the patient's legs against displacement upwardly from said footrest means,
- first force applying means pivotable about a horizontal first axis for biasing the upper portion of the person about said first axis;
- second force applying means pivotable about a vertical second axis for biasing the upper portion of the person about said second axis;
- drive means for supplying biasing forces to said first and second force applying means to bias said first and second force applying means for movement about said first and second axes, respectively;
- gearbox means for selectively connecting said drive means to either of said first and second force applying means,
- said gearbox means comprising:
- an input shaft connected to said drive means;
- a pair of mutually axially aligned output shafts parallel to said input shaft;
- means for selectively connecting said input shaft to a selected one of said output shafts for rotating said selected output shaft in either direction of rotation;
- and
- means for transmitting rotations of said first and second output shafts to said first and second force applying means, respectively.
Dependencies are inferred from the claim text.