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:
Mar. 26, 1985
Filed:
Jan. 06, 1982
Michael L Kelly, Boston, MA (US);
Analog & Digital Systems, Inc., Wilmington, MA (US);
Abstract
A loudspeaker in which a permanent magnet and associated yoke are encapsulated in a plastic housing. The voice coil and diaphragm are cemented to the top piece of the yoke to fix the position of the voice coil within the air gap defined by the yoke. The housing includes a quick bayonet type locking mechanism for locking the housing to a mounting plate, a circumferential groove which provides a receptacle for the loudspeaker grill, and a conduit through which conductors can pass to provide an electrical signal to the voice coil. The electrical signals are conducted through the housing by spring contacts which are biased against the conductive portion of a printed circuit board associated with the mounting plate to provide for a quick, sure electrical connection simultaneously with the mechanical connection.