Title:
CAP AND CENTER POLE APPARATUS AND METHOD OF COUPLING
Document Type and Number:
WIPO Patent Application WO2000059262
Kind Code:
A3
Abstract:
The present invention consists of an improved distortion reduction cap and center pole speaker assembly and an improved method of coupling the cap to a speaker center pole. The cap includes an axial flare which is stretched over and pressed into a corresponding axial gripping surface to provide a permanent coupling of the cap to a speaker center pole that does not vibrate or come loose and that eliminates air gaps between the cap and the center pole. The method of coupling the cap to the speaker center pole consists of forming the caps through known die cut stamping and forming a slightly raised corresponding axial gripping surface on the center pole of a speaker pole yoke assembly. The cap is placed over the center pole and then forced into a molding applicator tool. The mold stretches the cap vertically over the axial gripping surface while also forcing the cap against the axial gripping surface in a horizontal fashion such that the cap contacts the center pole, both above and below the axial gripping surface, to provide a secure, air tight seal.
Inventors:
WONG CHING TONG
Application Number:
PCT/IB2000/000347
Publication Date:
December 28, 2000
Filing Date:
March 24, 2000
Export Citation:
Assignee:
HONG LONG IND CO LTD (CN)
International Classes:
H04R1/00; H04R9/02; H04R9/06; H04R11/02; H04R25/00; H04R31/00; H04R; (IPC1-7): H04R9/06
Foreign References:
| EP0486254A2 | 1992-05-20 | |||
| US5408533A | 1995-04-18 | |||
| CN1140969A | 1997-01-22 | |||
| EP0624048A1 | 1994-11-09 |
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