Positioning cylinder, especially for subterranean mining

Details Positioning cylinder, especially for subterranean mining Positioning cylinder, especially for subterranean mining

1991-01-30

1992-09-01

Lateef, Marvin M.

Electrical resistors

With diverse nonelectrical device

338 39, 338151, 338180, 338196, 73453, H01C 1300

Patent

active

051442752

ABSTRACT:
A positioning cylinder assembly for subterranean mining applications has a rotary potentiometer connected through a friction wheel transmission with the spindle of the cylinder which is rotated when the piston is axially displaced therein. The friction wheel assembly comprises a pinion wheel connected to the spindle and a hollow wheel connected to the rotary potentiometer, that not only matches the pitch of the spindle to the rotary spring of the potentiometer but also functions as a slip clutch for zero setting of the potentionmeter and the piston.

REFERENCES:
patent: 1795707 (1931-03-01), Blymer
patent: 2203523 (1940-06-01), Cunningham

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