Communications: electrical – Continuously variable indicating – Using a particular modulation
Patent
1981-08-19
1983-09-06
Groody, James J.
Communications: electrical
Continuously variable indicating
Using a particular modulation
200 80R, 34087017, 34087031, 34087038, 34087039, 374154, G08C 1916, G08C 1906, G08C 1912
Patent
active
044032188
ABSTRACT:
A shaft mountable, portable, low frequency FM transmission device for comicating rotating shaft mounted sensor information to a stationary platform. It includes a generally cylindrical, dynamically balanced sending unit attached to and encircling the shaft and a remote stationary receiver having a preamplifier and pickup loop encircling but not touching the sending unit. Information from shaft mounted transducers is transmitted from the shaft to the receiver using low frequency FM techniques. Low frequency FM operates at low power which permits use of small batteries containable in a reduced volume, requires minimal receiver electronics, allows undistorted signal transmission at high RPM's and is relatively insensitive to axial and radial shaft movement.
REFERENCES:
patent: 3668673 (1972-06-01), Adler
patent: 3824857 (1974-07-01), Smith
patent: 4043076 (1977-08-01), Potrozuski et al.
patent: 4052884 (1977-10-01), Milberger
patent: 4182952 (1980-01-01), Moore
patent: 4225851 (1980-09-01), Reschovsky et al.
patent: 4253192 (1981-02-01), Donnally et al.
Beal Terrence E.
Boeglin Richard W.
Beers Robert F.
Groody James J.
Lall Prithvi C.
McGill Arthur A.
The United States of America as represented by the Secretary of
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