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Publication numberUS1996195 A
Publication typeGrant
Publication dateApr 2, 1935
Filing dateMay 5, 1933
Priority dateMay 5, 1933
Publication numberUS 1996195 A, US 1996195A, US-A-1996195, US1996195 A, US1996195A
InventorsFerguson Julian K
Original AssigneeFerguson Julian K
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric fan
US 1996195 A
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Description  (OCR text may contain errors)

April 2, 1935. J. U N 1,996,195

ELECTRIC FAN Filed May 5, 1933 Patented Apr. 2, 1935 y UNITED V i. f1996195 ,II M

KELECTRIQIFANT; A d p I I Julian K. Fergusn, "1 ampa,' c Applic tion May 5, 1933, Serial N6. 69,613 f Y 4ci ms.j o1.23o 2is w This invention relates 'in'genera'l to ventilating fans, and more particularly to portable fans of the radial blade type adapted for use in households;

As well known this art, ventilating fans in 5 common use are of the type including abasef on which a standard rises to support ahorizontal' shaft about which the fan blade structure is mounted to rotate. Thesefans'are ordinarily rotated by a rather bulky motor placed "to one side of the center of the fan assembly; and supported by the standard. Fans; of this'character'are usually ill balanced, and awkward; to move from one location to another. Furtherythe compare; tively large motor unnecessarily" increases'gthe dead air space at the 'centerof the fan, and there,- by decreases the efiici en'cyof the fan for ventilating purposes. I

It is the main object of the present invention to overcome the defects of the fans heretofore in common use, by eliminating the clumsy motor at the center of the fan structure, and by substituting therefor an annular field winding concentric with the fan; the blades of which are provided with an armature cooperating with this winding to effect rotation of the fan when the winding is energized.

Another object of the invention is toprovide a fan of the type described which can be manufactured very cheaply as by stamping out the several elements thereof of sheet metal.

A further object of the invention is to provide a fan of this type with a guard frame having its parts symmetrically arranged on opposite sides of the fan blade structure.

Other objects of the invention will become apparent as the detailed description thereof proceeds.

In the drawing: 7

. Figure 1 is a front elevation of the fan constructed according .to the present invention, parts,

casing 2 with plate I forms the base of the instrument and is provided at itslower end with me turned flanges 3 to seat onthe base plate I, and

at its upper end is cut away to form a seat adapted to receive the lower end of a skeleton guard frame designated generally by the reference numeral 4.

The frame 4 comprises two spiders 5 and 6,

ticn to another. 1

each stamped out of sheet metal, and simila each other in every respect. The spiders 5 and 6 are annular and-havetheir outeredges shapedto form parallel circular flanges; T and*8', respec-" tively, which are adapted to be clamped against oppositesides of an annular laminatedfiled'plate 9. I To hold thefianges l and 8 againsttheoppm; s'idesid'es" of the field plate 9, a circular 'bandflfl of springymaterial is mounted'to' engage' the' v The band In issplit and is provided at its o positeends with lugs ;l3 and I4. These'lugs are suitably bored to receive the shank l5 of a bolt adapted to be operated to draw the ends of the band I 0 toward each other and thereby clamp the flanges I and 8 of the spiders 5 and 6 securely 7 against the opposite sides of the plate 9.

The plate 9 is slotted across its inner periphery to receive the coils I 6 of electric wiring having its ends connected to the socket I! of a fittmg l8 acter detachably to asource of electrical energy.

, commonly used to connect devices of this char- The spiders 5 and 6 at their centers are shaped to provide solid supporting walls l9 and 20 for the shaft 2] on which the hub 22 of the fan 23 is suitably mounted to rotate.

The outer ends of the blades 24 of the fan 23 are rigidly connected to the annular armature 25 which has its outer periphery concentric with and slightly spaced from the inner periphery'of the field plate 9. Itv will be evident from the dising its field secured between plates which form a guard for the fan 23. The band It! may be'provided with a handle 26 adapted to facilitate the movement of the fan as a whole from one loca- The fan is intended to be rotated at various speeds. For this purpose, the windings of the motor are'connected attheir lower ends to condensers 21 which may be connected by means of a closure so far that the ran 23 with armature 25 3 constitutes the rotor of an induction motor havpivoted switch 28 to the motor winding to vary the speed thereof. The invention is-not cony cerned with any particular type of switch, or any particular type of winding. .It is primarilycon y cemed with the mounting of the fanblade structure so that both sides of the fan blade assembly present substantially the same appearance, and

so that the assembly .is properly balanced, with the parts thereof symmetrical with respect to a plane perpendicular to the axes of rotation of the fan, to facilitate carrying the same from one location to another.

The peculiar construction of the spiders 5 and 6 and their connection by the band H) to the plate 1 8 which forms the field of the motor, form a very rigid assembly adapted to receive many kinds of attachments. The circular field plate 9 serves as ve tion; l

What l-elaimisz- 1 ,lnienslee ieri ani basei twesimilerrdished sp des R etes-Qs d iasRa eQ ana tirer lationsh atmsaid base aend xtendlns roundaedwfixedi tewbev uter ne inheri sioi sa d-plates to: term ,aniannular: channeb atshait fixed to he. centers; on said: l tes, a hub otatable 3911 said. sba ts e we a-z aid. plates fan: blade xtend adisl x mm sa d=hub a-.r. ns ermatur se ured to-tbewoutem ds Qfzfiflid blades; ania nular fle di w ndinsiior seidlarmature ecu e saidwchan: n hend-e teo insiwithou breakaround;saidar: maturefand meansn: s id baseit mnt el energization of said field.

2; Inan electrician; aabesestwe smiles pid plates dished toward their centers and provided with flanges at their peripheries, a flexible band extending around the peripheries of said plates and having parallel grooves receiving said flanges to form an annular channel, means at the ends of said band for clamping the band to said plates, a shaft fixed to the centers of said plates, a hub rotatable on said shaft, fan blades extending radially from said hub, a ring armaturesecuredto the outer ends of said blades, an annular field winding fixed in said channel and extending without break around said armature, and means in said base to control energization of said field, said spiders being fixed to said base withithe clamping means concealed therein.

3, Inan electric fan, a base, two similar spider plates spaced apart and mounted on said base to .forma skeleton guard frame, a band extending around and fixed to the outer peripheries of said'plates to form an annular channel, a shaft fixedtothe center of said plates, a hub rotatable n aidsha tbetw n said plat fanblades ex tending, radially. from said hub, cooperating electrioalimeanson the endsof said fan blades and, in said: channel to, cause rotation of. said blades, anda-switch controlling the operation of,

fan, and means for, controlling the operation of.

said fantrotat nemeans, th parts aid frame being., ,ymmetrical withrespect toaplane perpendicularv to ,the-aXis of, rotation of said fan.

K. FERGUSON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2441737 *Jan 3, 1944May 18, 1948Weich William WPlastic ventilator fan
US2544281 *Jul 16, 1949Mar 6, 1951Cory CorpHousing for electric fans and the like
US2633293 *Dec 2, 1948Mar 31, 1953Charles E Jones And AssociatesElectric fan
US4459087 *Jun 2, 1982Jul 10, 1984Aciers Et Outillage PeugeotFan unit for an internal combustion engine of automobile vehicle
US4553075 *Aug 4, 1983Nov 12, 1985Rotron IncorporatedSimple brushless DC fan motor with reversing field
US4563622 *Jan 10, 1985Jan 7, 1986Rotron IncorporatedSimple brushless DC fan motor
US4564793 *Sep 28, 1983Jan 14, 1986Rotron, IncorporatedBrushless DC motor with improved starting
US4618806 *Feb 11, 1985Oct 21, 1986Rotron, Inc.Ironless, brushless DC motor with wave-winding
US4962734 *Mar 14, 1990Oct 16, 1990Paccar Inc.Electrically driven, circumferentially supported fan
US5185545 *Aug 23, 1990Feb 9, 1993Westinghouse Electric Corp.Dual propeller shock resistant submersible propulsor unit
US5205653 *May 1, 1991Apr 27, 1993Westinghouse Electric Corp.Bearing assembly and submersible propulsor unit incorporating the same
US5220231 *Aug 23, 1990Jun 15, 1993Westinghouse Electric Corp.Integral motor propulsor unit for water vehicles
US5252875 *Mar 28, 1991Oct 12, 1993Westinghouse Electric Corp.Integral motor propulsor unit for water vehicles with plural electric motors driving a single propeller
US5289068 *Aug 23, 1990Feb 22, 1994Westinghouse Electric Corp.Two-stage submersible propulsor unit for water vehicles
US6393208 *Aug 14, 2000May 21, 2002Daniel M. NosenchuckCompressor with integrated impeller and motor
US6740994 *Dec 22, 2000May 25, 2004Square D CompanyElectrical bus powered cooling fan
US20110088867 *Jul 19, 2010Apr 21, 2011Airxchange, Inc.System for and Method of Rotating Wheels in Rotary Air-to-Air Energy and Moisture Transfer Systems
DE3332659A1 *Sep 9, 1983Mar 15, 1984Rotron IncBrushless DC fan motor
EP0093817A1May 10, 1982Nov 16, 1983ACIERS ET OUTILLAGE PEUGEOT Société dite:Ventilator unit for internal-combustion engines of automotive vehicles
WO1996019669A1 *Dec 20, 1995Jun 27, 1996Augustinus Wilhelmus M BertelsFan
WO1996019670A2 *Dec 20, 1995Jun 27, 1996Augustinus Wilhelmus M BertelsDomestic fan
WO2002013652A1 *Aug 13, 2001Feb 21, 2002Nosenchuck Daniel MMotorless compressor
WO2014056692A1 *Sep 19, 2013Apr 17, 2014GEA Küba GmbHVentilator device
Classifications
U.S. Classification417/356
International ClassificationF04D25/02, F04D25/06
Cooperative ClassificationF04D25/066
European ClassificationF04D25/06B4