Treadmill
Abstract
Abstract A FRAME HAS A PAIR OF END DRUMS OVER WHICH OPERATES AN ENDLESS BELT. ONE OF THE DRUMS IS DRIVEN BY A VARIABLE SPEED ELECTRIC MOTOR TO CAUSE TRAVELING MOVEMENT OF THE BELT WHEREBY A PERSON CAN EXERCISE BY RUNNING ON THE BELT. AN ODOMETER IS CONNECTED INTO THE DRIVE SYSTEM TO MEASURE THE DISTANCE TRAVELED BY THE BELT. THE ODOMETER HAS A DISTANCE INDICATING DIAL, PREFERABLY MILES AND FRACTIONS THEREOF, AND OPERATES A SWITCH IN THE CIRCUIT TO THE DRIVE MOTOR TO CONTROL OPERATION OF THE MOTOR. ALSO PROVIDED ARE VARIABLE SPEED CONTROL MEANS FOR THE MOTOR AND ALSO A TIME INDICATOR, THE SPEED CONTROL MEANS OPERATING A SWITCH IN THE CIRCUIT TO THE DRIVE MOTOR AND ARRANGED TO CONTROL OFF AND ON OPERATION OF THE MOTOR. A HAND RAIL IS PROVIDED ON THE FRAME, AND A HOUSING IS MOUNTED ON THE HANDRAIL FOR SUPPORTING THE ODOMETER, SPEED CONTROL MEANS AND TIME INDICATOR IN A CONVENIENTLY ACCESSIBLE AND VIEWABLE POSITION. THE BELT HAS A ROUGHENED SURFACE FOR CONDITIONING THE FEET. THE FRAME AND BELT HAVE A DISCONNECTABLE JOINT ALLOWING THEM TO BE FOLDED INTO A COMPACT PACKAGE FOR SHIPMENT AND STORAGE.
Inventors
- 👤 Curtis L Erwin Jr
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |