Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-05-17
1997-05-13
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
340540, 340545, 340621, 340436, 340437, 367908, 73290R, 324643, G08B 2100
Patent
active
056296819
ABSTRACT:
The displacement sensor of this invention comprises a tube combined with a sonic transmitter and receiver. The tube acts as a waveguide for the sonic waves and a processor determines whether the tube has changed in length or has been constricted which, in either case, changes the pattern of sonic waves traveling from the transmitter to the receiver. In some applications, the transmitter and receiver are at different ends of the tube. In these cases, the attenuation in sound energy reaching the receiver, caused by the tube being squeezed at at least one point, is measured and the amount of cross action area reduction is determined. In other applications, the transmitter and receiver are at the same end of the tube and, in some of these cases, the transmitter and receiver are the same transducer. When the transmitter and receiver are at the same end of the tube, the receiver receives sonic waves reflected from a constriction in the tube and the time between transmission and reception of the waves permits the processor to determine the location along the tube of the constriction. The measuring device of this invention can also be used to measure the change in length of the tube or effective length, such as when the tube is partially filled with a liquid.
REFERENCES:
patent: 4590803 (1986-05-01), Harrold
patent: 4935723 (1990-06-01), Vallance
patent: 5134386 (1992-07-01), Swanic
patent: 5261505 (1993-11-01), Holroyd et al.
patent: 5301549 (1994-04-01), Sinclair
patent: 5446446 (1995-08-01), Harman
Breed David S.
DuVall Wilbur E.
Johnson Wendell C.
Automotive Technologies International Inc.
Hofsass Jeffery
Lee Benjamin C.
Shipkovitz Samuel
LandOfFree
Tubular sonic displacement sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tubular sonic displacement sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tubular sonic displacement sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1388458