The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1998
Filed:
Apr. 05, 1995
James Joseph Croft, Everett, WA (US);
Robert C Williamson, Mountlake Terrace, WA (US);
Carver Corporation, Lynnwood, WA (US);
Abstract
Disclosed is a loudspeaker apparatus having at least one support surface provided therein adjacent to a complaint surround for providing lateral support thereto, the surround mounting the diaphragm of the speaker to a speaker frame for permitting longitudinal movement of the diaphragm with respect to the frame. The support surface may be used with a variety of surrounds. A second support surface may also be provided. The support surfaces may be contoured to achieve a desired response from their engagement with the surround. A negative air spring is formed from a pair of opposed support surfaces contoured to form a necked region therebetween for deformingly engaging a surround formed as a resilient member. The negative air spring negatively balances, or counterbalances the diphragm against the box pressures with the enclosure. The resilient member is formed as a tube for containing a fluid such as air therein. The pressure within the resilient member is controlled in response to a variety of parameters.