Measuring and testing – Hydraulic altimeter
Patent
1994-01-04
1996-05-21
Chilcot, Richard
Measuring and testing
Hydraulic altimeter
G01C 500
Patent
active
055178693
ABSTRACT:
A device for providing one or more signals that are functions of a sensor module's altitude relative to a reference body of liquid. The sensor module has one or two hydrostatic pressure transducers, which transducers are linked to the bodies of liquid by respective liquid-filled elongated flexible conduits. The first two embodiments have only single transducers each connected by a single conduit to a single body of liquid. In each case, the body of liquid is under ambient atmospheric pressure plus added pressure to maintain a positive pressure with respect to ambient atmospheric pressure to prevent dissolved gases from coming out of solution and creating bubbles in the conduits. In a third embodiment, a differential transducer has one port linked to the body of liquid and a second port linked to a pressurized gas which also applies pressure to the body of liquid, again to maintain positive pressure within the operational limits of the device. In a fourth embodiment, a second body of liquid is contained within but not mixed with the first body of liquid which is also under atmospheric pressure and subjected to additional pressure. Each body of liquid is linked to a separate input port of the differential transducer. A fifth embodiment is similar in form to the fourth embodiment with the addition of a second pressure transducer linked to the first body of liquid only.
REFERENCES:
patent: 3815423 (1974-06-01), Gearhart
patent: 3842513 (1974-10-01), Clark
patent: 4003263 (1977-01-01), O'Rourke
patent: 4026156 (1977-05-01), Bowditch et al.
patent: 4087920 (1978-05-01), Huggett et al.
patent: 4379367 (1983-04-01), Legris
Biegel Ronald L.
Chilcot Richard
The Stanley Works
Tighe Thomas J.
LandOfFree
Hydrostatic altimeter error compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrostatic altimeter error compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrostatic altimeter error compensation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2030684