Vibration transducer with improved viscous damping

Details Vibration transducer with improved viscous damping Vibration transducer with improved viscous damping

1976-12-30

1978-08-29

Wilbur, Maynard R.

Communications: electrical

Selective

Interrogation response

340 8LF, G01V 116

Patent

active

041107314

ABSTRACT:
A vibration transducer has a cylinder for enclosing a viscous damping medium. A seismic mass in the form of a piston is mounted in the cylinder for axial oscillation with the aid of a spring suspension which is flexible in an axial direction and has its maximum stiffness at right angles to that axial direction to retain the piston against radial movement relative to the cylinder. A mounting post extends through a bore in the piston and the spring suspension includes a bridge extending from one side to the opposite side of the piston. The axial oscillation of the piston is damped with the aid of floating seals between the piston and cylinder, between the piston and the mounting post and between the piston and the spring suspension bridge. These floating seals impede the flow of the viscous damping medium past the piston while at the same time avoiding static friction between the moving parts and the piston of the vibration transducer.

REFERENCES:
patent: 2311079 (1943-02-01), Parr, Jr.
patent: 3103603 (1963-09-01), Reutter
patent: 3274538 (1966-09-01), Snavely
patent: 3328752 (1967-06-01), Sims
patent: 3582874 (1971-06-01), Fedoseenko

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