Hubodometer adapted for selectable gear ratios

Details Hubodometer adapted for selectable gear ratios Hubodometer adapted for selectable gear ratios

1984-03-14

1985-03-19

Fuller, Benjamin R.

Registers

Odometers

235 96, 235131JA, 235133R, G01C 2200

Patent

active

045061475

ABSTRACT:
A hubodometer having a wide range of selectable gear ratios so that the same basic structure can be used to indicate distance traveled by wheels of greatly different wheel diameters in either miles or kilometers. The hubodometer has an elongated bore extending through a frame and centered on the axis of rotation of the hubodometer. An odometer helical drive gear and shaft is mounted on the frame transversely to the axis of rotation and removed from the bore in the frame. In assembly of the hubodometer, if a first gear ratio is desired, a support shaft carrying a gear is located within the bore and is fixed to rotate with the casing on its axis of rotation. This gear engages the odometer helical drive gear at a first locus so that the odometer reading is responsive to the rotation of the casing with a first gear ratio. If a second gear ratio is desired, a support shaft having no gear is located within the bore and is fixed to rotate with the hubodometer casing. The odometer helical drive gear is driven at a second locus, however, by a second gear train which includes a spur gear fixed to the hubodometer casing so as to rotate therewith. The range of gear ratios is further enhanced by a ratchet and pawl assembly which includes one compound ratchet wheel selected from a group of available compound ratchet wheels.

REFERENCES:
patent: 2977811 (1961-04-01), Roberts
patent: 3184982 (1965-05-01), Auer
patent: 3598309 (1971-08-01), Engler et al.
patent: 4101762 (1978-07-01), Borgstrom
patent: 4430561 (1984-02-01), Powell

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