Title:
PASSIVE RADIATOR WITH MASS ELEMENTS
Document Type and Number:
WIPO Patent Application WO2000076031
Kind Code:
A3
Abstract:
A passive radiator comprising a frame (1) and a radiator body (3) which is connected to the frame and which is movable relative to the frame along a translation axis (T). The radiator is suitable for the displacement of comparatively large air volumes. The radiator body comprises a central mass element (3a) and at least one mass element (3b, 3c, 3d) which is concentrically arranged with respect to the central mass element. The radiator further comprises connection units (5a, 5b, 5c, 5d) for the movable interconnection of each pair of adjoining mass elements and for the movable fastening of one of the mass elements to the frame. Each of said connection units comprises at least a resilient annular connection element (5a1, 5a2; 5b1, 5b2; 5c1, 5c2; 5d1, 5d2), such that the central mass element with its adjoining connection unit forms a mass spring system, as does each concentrically arranged mass element with its adjoining connection element, while all mass spring systems thus defined have at least substantially the same resonance frequency.
Inventors:
D HOOGH GUIDO O M
Application Number:
PCT/EP2000/004930
Publication Date:
August 09, 2001
Filing Date:
May 29, 2000
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
International Classes:
H01R3/00; H04R1/24; H04R1/28; (IPC1-7): H04R1/28
Domestic Patent References:
| WO1991019405A1 | 1991-12-12 | |||
| WO1997046046A1 | 1997-12-04 | |||
| WO1997046047A1 | 1997-12-04 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 006, no. 047 (E - 099) 26 March 1982 (1982-03-26)
Download PDF: