Electrical resistors – Mechanically variable – Movable contact electrically adjustable over length of...
Patent
1990-06-11
1991-09-24
Lateef, Marvin M.
Electrical resistors
Mechanically variable
Movable contact electrically adjustable over length of...
338195, 338309, 296101, H01C 1032
Patent
active
050517198
ABSTRACT:
A smooth resistance characteristic, a reduction in component cost, and high durability are achieved for a variable resistor card formed using thick-film silk screen deposition. An arcuate wiper track and radial extension areas are all formed of a resistance material deposited using silk screen techniques. Laser trimming of the extension areas provides a desired characteristic of resistance versus sweep angle for the variable resistor. The resistance characteristic is continuous and nonstepped, thereby avoiding the creation of spikes caused by small circuit breaks during sweeping movement of the wiper contact.
REFERENCES:
patent: 3564475 (1971-02-01), Fujii et al.
patent: 4243969 (1981-01-01), Steigerwald et al.
patent: 4293839 (1981-10-01), Asada et al.
patent: 4318075 (1982-03-01), Pudelko et al.
patent: 4345235 (1982-08-01), Riley et al.
patent: 4495524 (1985-01-01), Kakuhashi et al.
patent: 4500866 (1985-02-01), Romann et al.
patent: 4751492 (1988-06-01), Tsuzuki et al.
patent: 4873865 (1989-10-01), Gaston
patent: 4928526 (1990-05-01), Weaver
patent: 4947150 (1990-08-01), Wassertrom
Gaston Robert D.
Patel Daxesh K.
Ford Motor Company
Godwin Paul K.
Lateef Marvin M.
Mollon Mark
LandOfFree
Thick-film non-step resistor with accurate resistance characteri does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thick-film non-step resistor with accurate resistance characteri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thick-film non-step resistor with accurate resistance characteri will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1699569