Electrical resistors – Mechanically variable – With resistor cleaner
Patent
1992-03-16
1993-03-09
Lateef, Marvin M.
Electrical resistors
Mechanically variable
With resistor cleaner
338 67, 200242, H01C 1010, H01C 1300, H01H 160
Patent
active
051929392
ABSTRACT:
A device for cleaning the contacts of a potentiometer or the like. The potentiometer has an externally threaded cylinder extending outwardly from a panel of an electronic unit and has a concentric rotatable shaft extending therethrough. The shaft has at least one internal contact which rotates when the shaft is rotated and engages a stationary contact in the form of a slide wire or the like of the potentiometer. Contaminants prevent good electrical conduction between the contacts so that the potentiometer must be cleaned, heretofore, requiring partial disassembly of the electronic unit in which it is internally located. The cleaning device has a housing with an open end and a closed end, with the open end having internal threads connecting with the external threads of the cylinder protruding from the electronic unit panel. A small tube communicates with the closed end of the housing and with a pressurized container of contact cleaning fluid. Cleaning fluid under pressure is supplied through the tube, through a chamber formed in the housing, and through an annular space between the shaft and the threaded cylinder to clean the contacts of the potentiometer without the need for disassembly.
REFERENCES:
patent: 2085404 (1937-06-01), Vollenbroek
patent: 3652970 (1972-03-01), Hubert
patent: 3854113 (1974-12-01), Fletcher et al.
Kossow Alan L.
Palmer Alec W.
Gutchess, Jr. Allen D.
Lateef Marvin M.
LandOfFree
Cleaning device for rotary controls e.g. potentiometers and swit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cleaning device for rotary controls e.g. potentiometers and swit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cleaning device for rotary controls e.g. potentiometers and swit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-213082