Paper making and fiber liberation – Processes and products – Article forming processes
Reexamination Certificate
2006-10-10
2006-10-10
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Processes and products
Article forming processes
C162S218000, C162S226000, C162S382000, C162S387000, C181S169000, C249S141000
Reexamination Certificate
active
07118649
ABSTRACT:
A loudspeaker diaphragm manufacturing apparatus of the present invention comprises; a paper tank, a pulp dispersion reservoir tank connected to the paper tank, a stirring means provided in the paper tank, a water inlet unit connected to the paper tank, a drain unit disposed under the paper tank, and a paper mold disposed at the bottom of the paper tank or in the drain unit, wherein a sectional area of the drain unit is larger than the plane area of the paper mold. The drain unit may be further provided with a water flow control plate in a draining direction of the paper mold. According to the manufacturing apparatus and the manufacturing method of the present invention, diaphragms with very uniform internal composition and diaphragms with intentionally varied internal composition in accordance with required sound characteristics can be mass-produced with good reproducibility.
REFERENCES:
patent: 1984019 (1934-12-01), Hawley
patent: 2460129 (1949-01-01), Ista
patent: 2624417 (1953-01-01), Brennan
patent: 2705442 (1955-04-01), Kyle et al.
patent: 4323426 (1982-04-01), Cowan et al.
patent: 5817216 (1998-10-01), Tomita et al.
patent: 55-124396 (1980-09-01), None
patent: 58-133096 (1983-08-01), None
patent: 61-177100 (1986-08-01), None
patent: 5-22791 (1993-01-01), None
Mizone Shinya
Morohoshi Yukinori
Nakamura Kazuto
Nakamura Nobuo
Hug Eric
Matsushita Electric - Industrial Co., Ltd.
Wenderoth , Lind & Ponack, L.L.P.
LandOfFree
Device and method for manufacturing speaker diaphragm, the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device and method for manufacturing speaker diaphragm, the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for manufacturing speaker diaphragm, the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3708272