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:
Jun. 21, 1977
Filed:
Dec. 03, 1975
Abstract
A loudspeaker consisting of a driver or motor unit consisting of a cylindrical magnet structure, a voice coil and a domed diaphragm; an enclosure unit for receiving therein the driver or motor unit; and a horn unit attached mechanically to the opened end of the enclosure unit, the positioning or locating cylindrical section of the horn unit being snugly fitted into the enclosure unit. The assembly is much facilitated, and the driver or motor unit, the enclosure unit and the horn unit may be located and held in correctly mutually coaxially aligned relationship in a very simple manner. In one embodiment, a spring is loaded between the driver or motor unit and the enclosure unit so that the domed diaphragm may be restrained under the forces in excess of 1.5 kg/cm.sup.2 over which the lowest resonance frequency may be stabilized.