Motorized variable speed treadmill

Details Motorized variable speed treadmill Motorized variable speed treadmill

1982-09-21

1985-03-05

Hafer, Robert A.

Undertaking

188 67, 474 27, A63B 2306

Patent

active

045026793

ABSTRACT:
A motor driven treadmill having a speed control operated by the user and an elevation control operated by the user so that the user can vary the speed and the inclination of the treadmill as desired both at the start and during exercise. Spaced elevation units carried at one end of the treadmill frame with lead screws therein driven in synchronism by an electric motor, with limit controls for raising and lowering. A speed control with a pulley unit carried on a translating rod moved by the patient, and a brake mechanism for holding the translating rod in the position selected by the patient, thereby maintaining the desired speed.

REFERENCES:
patent: D231678 (1974-05-01), Trotter
patent: 1629323 (1927-05-01), Swartz
patent: 2219969 (1940-10-01), Vaughan
patent: 2267238 (1941-12-01), Irwin
patent: 2723776 (1955-11-01), Jacobson
patent: 2969768 (1961-01-01), Grant
patent: 3643943 (1972-02-01), Erwin, Jr. et al.
patent: 3731917 (1973-05-01), Townsend
patent: 3814417 (1974-06-01), Catlin
patent: 4344616 (1982-08-01), Ogden
patent: 4374587 (1983-02-01), Ogden
Trotter Treadmills Incorporated, Model C-22 Kit, Holliston, Mass. 01746.

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