Measuring and testing – Dynamometers – Responsive to force
Patent
1983-04-04
1984-10-30
Ciarlante, Anthony V.
Measuring and testing
Dynamometers
Responsive to force
73DIG1, G01L 110
Patent
active
044793910
ABSTRACT:
A resonator force transducer assembly includes an elongate base element, a first arm disposed generally in parallel with a front portion of the base element, a first hinge joining the arm near a rear end thereof to the base element at about the middle thereof, an elongate resonator element such as a quartz crystal attached to the front ends of the arm and base element to extend therebetween, a second arm disposed generally in parallel with a rear portion of the base element, and a second hinge joining the second arm to the base element. A third hinge joins the front end of the second arm to the rear end of the first arm to form a type of compound lever arrangement so that when a force is applied to the second arm to urge it either toward or away from the base element, a portion of this force is transmitted via the third hinge to the first arm to urge it either away from or toward the base element to thereby stress the quartz resonator element. The force applied to the second arm can be measured by causing the quartz resonator element to vibrate and then taking measurements of the change in frequency with the application of force. To protect the quartz resonator element and the rest of the force transducer assembly from corrosive effects of the environment and from ambient perturbations which may introduce error in the force measurement, the entire assembly is disposed in a vacuum enclosure. The force to be measured is then transmitted to the second arm via a rod which is attached to the arm and which extends through an opening in the enclosure. A seal between the second arm and the opening in the enclosure is provided by bellows, and another bellows in opposing relationship is provided to compensate for the effect of atmospheric pressure on the second arm introduced through the first mentioned bellows.
REFERENCES:
patent: 3238789 (1966-03-01), Erdley
patent: 4215570 (1980-08-01), EerNisse
patent: 4221131 (1980-09-01), Albert
Banik Gary J.
EerNisse Errol
Kistler Walter P.
Paros Jerome
Ciarlante Anthony V.
Quartex, Inc.
LandOfFree
Resonator force transducer assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Resonator force transducer assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resonator force transducer assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1097690