US Patent 7190804 Speaker apparatus

Patent 7190804 was granted and assigned to Pioneer Corporation on March, 2007 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

All edits

Edits on 6 Sep, 2023

"Add patent inventor(s)"

Golden AI

edited on 6 Sep, 2023

Edits made to:

Infobox (+2 properties)

Infobox

Patent Inventor Names

Tohru Nakamura0

Tomohiro Suenaga0

Edits on 1 Sep, 2023

"Add patent abstract"

Golden AI

edited on 1 Sep, 2023

Edits made to:

Article (+514 characters)

Article

Patent abstract

This invention provides a speaker apparatus that outputs sound having smooth frequency characteristics. To solve the inconvenience with the prior art, this invention is a speaker apparatus comprising a diaphragm and a cylindrical-shaped coil bobbin, and not comprising a center cap that covers the coil bobbin, and where the diaphragm is located such that it rests on the coil bobbin, and the coil bobbin and diaphragm are located such that sound from the coil bobbin and diaphragm is not reflected.

Edits on 18 May, 2023

"Remove website redirecting to Patent Public Search front page"

Golden AI

edited on 18 May, 2023

Edits made to:

Infobox (-1 properties)

Infobox

Official Website

https://pdfpiw.uspto.gov/.piw?Docid=071908040

"Remove leading 0 from patent number"

Golden AI

edited on 18 May, 2023