Title:
【発明の名称】共鳴振動子
Document Type and Number:
Japanese Patent JP3023420
Kind Code:
B2
Abstract:
PCT No. PCT/EP90/01882 Sec. 371 Date Jun. 1, 1992 Sec. 102(e) Date Jun. 1, 1992 PCT Filed Nov. 9, 1990 PCT Pub. No. WO91/07741 PCT Pub. Date May 30, 1991.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.
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Inventors:
Prossou, Jorgen
Application Number:
JP50062691A
Publication Date:
March 21, 2000
Filing Date:
November 09, 1990
Export Citation:
Assignee:
LONZA LIMITED
International Classes:
B06B1/06; G10K11/02; G10K11/04; H04R17/10; (IPC1-7): H04R17/10; B06B1/06; G10K11/02
Other References:
【文献】米国特許4671379(US,A)
【文献】米国特許852647(US,A)
【文献】米国特許852647(US,A)
Attorney, Agent or Firm:
Morizaburo Suzuki