Title:
Centrifugal fan
United States Patent D754835
Inventors:
Uehara, Akimasa (Aichi, JP)
Ousaka, Satoshi (Aichi, JP)
Application Number:
29/502922
Publication Date:
04/26/2016
Filing Date:
09/22/2014
Assignee:
Panasonic Corporation (Kadoma-shi, Osaka, JP)
Primary Class:
Other Classes:
D23/383
International Classes:
(IPC1-7): 2304
Field of Search:
D23/370-379, D23/381-385, D23/388, D23/212, D23/213, D23/223, D23/325, D23/229, D23/380, D23/324, D23/330, D23/332, D23/335, D23/353-369, D23/499, 416/5, 392/364, 392/365, 415/204, 415/205
View Patent Images:
US Patent References:
20150316070Quieter centrifugal blower with suppressed BPF toneNovember, 2015Hayashi415/204
9194603Heating and ventilating fanNovember, 2015Yuan
9103104Bath fan and heater with cover having adjustable luver or depressible fastener and depressible releaseAugust, 2015Tom
909726550/60 CFM bath exhaust fans with flaps/ears that allow housings to be mounted to joistsAugust, 2015Tom
20150086348SINGLE SUCTION TYPE CENTRIFUGAL FANMarch, 2015Uehara415/204
20140248041VENTILATING FAN FOR HEATINGSeptember, 2014Yuan392/364
8814513Ceiling mounted ventilation fan with illuminationAugust, 2014Yang415/213.1
20140169771HEATING AND VENTILATING FANJune, 2014Yuan392/365
D703302Electric fanApril, 2014RuckD23/370
20130315731CELING MOUNTED VENTILATION FAN WITH ILLUMINATIONNovember, 2013Yang416/5
20130266443CEILING MOUNTED VENTILATION FAN WITH ILLUMINATIONOctober, 2013Yang416/5
20130203336VENTILATION SYSTEM AND METHODAugust, 2013Karst454/249
20130143481CEILING-EMBEDDED VENTILATION FANJune, 2013Kagawa454/354
20130143479HEATING VENTILATOR FOR BATHROOMJune, 2013Weng454/233
D675723Device for recovering waste heat from flue gasesFebruary, 2013GarciaD23/393
D674474Air cleanerJanuary, 2013RentschlerD23/364
D663828Combination manifold and filterJuly, 2012PortilloD23/371
20100197216VENTILATOR WITH ILLUMINATING UNIT AND HUMAN SENSORAugust, 2010Liang454/256
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D443054Centrifugal electric fan with a fan wheel contained in a spiral housing, equipped with one lateral gridMay, 2001SpaggiariD23/370
D440295Air filterApril, 2001HonmaD23/365
D392730Pneumatic flow control housingMarch, 1998KozoraD23/355
D387859Ventilating fanDecember, 1997UkaiD23/370
D342782Duct close elbowDecember, 1993AndersonD23/393
4867640Exhaust fan for bathrooms and the likeSeptember, 1989Penlesky415/204
D234203N/AJanuary, 1975WrobelD23/383
2850228BlowerSeptember, 1958Rowley126/25B
D174005N/AFebruary, 1955ShompheD13/112
Other References:
Ducted Centrifugal Exhaust Fans . lifcow.com (online)9 pgs. Published Jun. 2, 2015 [retrieved on Nov. 24, 2015]. Retrieved from Internet: .
Primary Examiner:
Hattan, Susan Bennett
Assistant Examiner:
Horse, Marie Fast
Attorney, Agent or Firm:
Mots Law, PLLC
Claims:
CLAIM

1. The ornamental design for a centrifugal fan, as shown and described.

Description:

FIG. 1 is a front perspective view of a centrifugal fan;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a rear perspective view thereof.

The broken lines in the drawing disclosure depict interior parts of the centrifugal fan that form no part of the claimed design.