US 5,315,565 AGranted

Resonance oscillator

OwnerJorgen Brosowinventor

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Abstract

A resonance oscillator comprises an active, e.g. disk-shaped, oscillator part (2) which is brought into contact, forming a couple oscillator, with a passive, comparatively longer oscillator part. This oscillator part, which basically determines the resonant frequency, consists of a variable-length solid column or liquid column (11) the length of which can be varied continuously in the direction of the sound vector in order to change the resonant frequency. The active oscillator part (2) is mounted on the base of an elongated resonance container (6) which contains the liquid that forms the liquid column (11). The length of the liquid column is varied by sliding a piston (5). The resonance container (6) is bounded by a corrosion-resistant, high-strength covering disk (7) of minimal thickness and is connected to an equalizing container (9) which receives the liquid displaced by the piston from the resonance container and returns the liquid to the resonance container.

Claims16

Dependent claims

A resonance oscillator, comprising:

an active oscillator part;
a passive oscillator part for basically determining a resonant frequency, said passive oscillator part being connected to said active oscillator part and having a resonance container receiving a liquid column of a variable length greater than a length of said active oscillator part;
an equalizing container connected to said resonance container for receiving liquid from and returning liquid to said resonance container;
a piston sliding axially in said resonance container for displacing liquid from said resonance container into said equalizing container and for drawing liquid from said equalizing container into said resonance container, thereby varying the length of the liquid column in said resonance container and setting the resonant frequency;
and
a counterpressure diaphragm sealing said equalizing chamber with respect to the surroundings of said resonance oscillator and enabling a change in volume within said equalizing chamber corresponding to axial displacement of said piston.

3 more elements

Dependencies are inferred from the claim text.