Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS1871625 A
Publication typeGrant
Publication dateAug 16, 1932
Filing dateMay 11, 1931
Priority dateMay 11, 1931
Publication numberUS 1871625 A, US 1871625A, US-A-1871625, US1871625 A, US1871625A
InventorsSeymore Luff Arthur
Original AssigneeSeymore Luff Arthur
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Support
US 1871625 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Aug 16, 1932. 5 LUFF 1,871,625

SUPPORT Filed May 11, 1931 Patented Aug. 16, 1932 UNITED STATES ARTHUR SEYMORE L UFF, OF NEW ORLEANS, LOUISIANA SUPPORT Application filed May 11, 1931. Serial No. 536,627.

This invention relates to supports of a type having special application upon electric fans and the like to retain the fan blade against accidental displacement.

One of the principalobjects of the invention consists of the provision and arrangement of supports of this character having yieldable portions for grippingly retainlng the rim of the guard.

More specifically stated, the yieldable portions are provided wit-h restricted entrance openings to obviate accidentaldisplacement and undue vibration of the guard.

With the above and other objects in view, the invention further consists of the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended claim.

In the drawing Figure 1 is'a front elevation of an electric fan disclosing the relative arrangement of the present invention thereon for supporting a blade guard in position for use.

Figure 2 is a front elevation of the present invention.

Figure 3 is a longitudinal sectional view taken on line 33 of Figure 2.

Referring to the drawing in detail wherein 0 like characters of reference denote corresponding parts, the reference character indicates generally the base of a form of an electric fan, 11 the motor housing and 12 the fan blades; all of the above being of the usual and well known construction followed in the manufacture of electric fans and which form no part of the present application for Letters Patent but are mentioned merely for purposes of illustration in bringing forward the novel advantages of the present invention.

The invention primarily resides in the provision of arm members 13 of strip-like formation having obliquely arranged attaching ends 14 disposed in the manner shown in Figure 3 of the drawing and secured to the outer side of the motor housing 11 in the manner suggested in Figure 1.

As generally known, fans of the character described require guards to prevent persons from being injured by the rapidly revolving guard fan blades. These guards are usually provided with an annular frame structure having connection with the ends of arm members constructed along the lines of the arm mem 'bers 13, by detachably secured forms of retaining elements. These retaining elements when improperly applied, either through negligence or faulty construction, permit the frame to vibrate, become loosened and sometimes allowed to come into direct contact with the fan blades.

In order to overcome the aforementioned difficulties, it is my intention to arrange novel forms of retaining means at the outer ends of the supporting arms devoid of any form of detachable securing means. In carrying out this phase of the invention, I provide plate members 15 rigidly secured, as at-16 and 17, at intervals upon the supporting arms and upon the rearmost sides thereof. The outermost extremities of the supporting arms 13 I and plate members 15 dispose flat portions 18 and semi-circular portions 19 in confronting relation and at right angles to the supporting arms 13, substantially as illustrated in Figure 3 of the drawing, to conveniently accommodate portions of the annular frame structure 20 therebetween. The terminals of the aforementioned extremities are oppositely flared to provide a restricted guide entrance by means of which the frame, when stressed, will force the yieldable ends of the supporting members and plate members apart. The resiliency of the aforementioned extremities will be sufficient to grippingly retain the frame guard against accidental displacement and undue vibration or buzzing.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within thescope of the appended claim.

Having described the invention, what is claimed is: 1

A fan guard comprising arm members positioned to dispose the outer terminals thereof in concentric alignment, plate members immovably positioned on the rear face of the arm adjacent the mentioned ends thereof, the adjacent extremities of the arm members,

the plate members having semi-circular portions yieldably disposed in confronting relation, said portions having the terminals thereof outwardly flared and extending at right 5 angles to the arm members to provide a guide entrance for the guard.

In testimony whereof I aflix my signature. ARTHUR SEYMORE LUFF. f

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2498968 *Mar 7, 1945Feb 28, 1950Viewegh John HFan guard mounting
US2617583 *Aug 19, 1949Nov 11, 1952Union Steel Prod CoFan guard
US2658666 *Dec 14, 1950Nov 10, 1953Singer Mfg CoFan guard
US2690296 *Dec 2, 1950Sep 28, 1954Silex CoElectric fan
US2829819 *Jun 11, 1952Apr 8, 1958Controls Co Of AmericaElectric fan blade guard
US6682251 *Nov 9, 2000Jan 27, 2004Koninklijke Philips Electronics N.V.System for snapping a periferal device to a circumferential edge of a pedestal
US7530783Oct 28, 2005May 12, 2009Vornado Air Circulation Systems, Inc.Grill mounting and retaining assembly
DE102004034587A1 *Jul 16, 2004Feb 16, 2006Stadtmüller, UweTragstrebe für Schutzgitter und Verfahren zu ihrer Herstellung
EP1617086A3 *Jul 8, 2005Jan 10, 2007Uwe StadtmüllerSupport strut for protection grid and fabricating method thereof
Classifications
U.S. Classification416/247.00R, 188/218.00R
International ClassificationF04D29/60, F04D29/64
Cooperative ClassificationF04D29/646
European ClassificationF04D29/64C2