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Publication numberUS3325824 A
Publication typeGrant
Publication dateJun 20, 1967
Filing dateOct 23, 1965
Priority dateOct 23, 1965
Publication numberUS 3325824 A, US 3325824A, US-A-3325824, US3325824 A, US3325824A
InventorsDonegan William J
Original AssigneeDonegan Optical Co Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Adjustable head band
US 3325824 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

June 20, 1967 w. J. DONEGAN ADJUSTABLE HEAD BAND Filed Oct. 23, 1965 INVENTOR. DWI/127m J image/1 BYZ 4. W A frarmgy.

United States Patent 3,325,824 ADJUSTABLE HEAD BAND William J. Donegan, Kansas City, Mo., assignor t0 Donegau Optical 01., Inc, Kansas City, Mo., a corporation of Missouri Filed (Pct. 23, 1965, Ser. No. 503,310 3 Claims. (Cl. 2-8) This invention relates to new and useful improvements in head bands, and has particular reference to head bands of the type commonly used in mounting magnifying viewers, welding masks, and the like on the users heads.

The principal object of the present invention is the provision of a head band having novel means for adjusting it to the size of each individual users head, and for clamping it as tightly as may be desired about the head, in order to support the weight of whatever apparatus may be supported by said head band.

Another object is the provision of a head band of the character described having a single control member constituting a rotatable knob, and operable both to adjust the circumference of the head band, and also to hold it firmly but releasably at any desired position in its adjustment.

Other objects are simplicity and economy of construction, efiiciency and dependability of operation, and adaptability for use with head bands utilized for many different purposes.

With these objects in view, as well as other objects which will appear in the course of the specification, reference will be had to the accompanying drawing wherein:

FIG. 1 is a side elevational view of a binocular magnifier including an adjustable head band embodying the present invention,

FIG. 2 is a top plan view of the parts as shown in FIG. 1,

FIG. 3 is an enlarged, fragmentary sectional View taken on line IIIIII of FIG. 2,

FIG. 4 is a fragmentary sectional view taken on line IVIV of FIG. 3,

FIG. 5 is a fragmentary rear elevational View of the head band, showing the control knob and related parts thereof, and

FIG. 6 is a reduced fragmentary sectional View taken on line VI-VI of FIG. 3, the plane of said section being curved with the horizontal contour of the head band.

Like reference numerals apply to similar parts throughout the several views, and the numeral 2 applies generally to the head band forming the subject matter of this invention, said head band comprising a fiat strap 4 of flexible material such as plastic, the respective end portions 6 and 8 thereof being telescoped slidably into the opposite ends of a sleeve 10 of fiat rectangular cross-sectional contour, and being disposed in overlapping relation in said sleeve. Said sleeve is also formed of a flexible material. The end portions 6 and 8 of the strap are secured adjustably in sleeve 10 by means which will presently be described. The head band is adapted to be worn horizontally about a persons head substantially at forehead level, and the flexibility of the strap and sleeve permit them to conform readily to the contour of the head.

Purely as an example of apparatus which may be carried by the head hand, there is illustrated an eye shade member 12 adapted to be disposed in the line of sight of the wearer, there being mounted in the front wall thereof a lens holder 14 in which are fixed a pair of magnifying lenses 16. The eye shade is provided with a pair of rearwardly extending temple pieces 18 which are pivoted respectively to the strap 4 at opposite sides of the wearers head, as by friction bolts 20, whereby the eye shade may be raised or lowered as desired. It will be apparent, however,

that many other types of apparatus, such as welders masks, physicians circular mirrors, and the like, could also be mounted on the head band.

A pair of longitudinally elongated slots 22 and 24 are formed respectively in end portions 6 and 8 of strap 4, within sleeve 10. The upper edge of slot 22 is toothed as at 26 to form a straight gear rack, said teeth being reinforced by a thin, flexible metal plate 28 laid flat against end strap portion 6 and secured by fiat head rivets 30, said plate having teeth corresponding to and overlying teeth 26. Similarly, the lower edge of slot 24 is toothed as at 32 to form a straight gear rack, and said teeth are reinforced by a flexible metal plate 34 secured to end strap portion 8 by rivets 36.

A toothed pinion 38 extends horizontally through strap slots 22 and 24, so as to mesh with racks 26 and 32 respectively at its top and bottom. Rigidly aflixed to the forward end of said pinion, concentrically therewith, is a fiat, circular plate 40 of greater diameter than said pinion, said plate abutting the forward surface of end strap section 6, but within sleeve 19. A short square or otherwise non-circular shaft 42 is disposed axially of pinion 38, being engaged non-rotatably in a correspondingly shaped socket 44 formed in said pinion, and secured therein by a screw 46 inserted from the forward side of the pinion. Said shaft extends rearwardly through a hole 48 formed in the rear wall of sleeve 10, said hole being large enough to permit rotation of said shaft therein. The parts thus far described may 'be assembled by first inserting strap 4 through sleeve 10, then overlapping end portions 6 and 8 thereof, and inserting pinion 38, then sliding the sleeve over the overlapping end portions 6 and 8 and finally inserting shaft 42 through sleeve hole 48 into pinion socket 44 and inserting screw 46, the forward wall of the sleeve being provided with an access hole 50 l for admitting said screw.

. a central hole Mounted on the portion of shaft 42 extending outwardly to the rear of sleeve 10 are, successively, an anchor plate 52, a detent plate 54, and a retainer plate 56. Anchor plate 52 is circular, essentially, planar, and has 58 through which shaft 42 passes, said anchor plate being both rotatable and longitudinally movable with respect to said shaft. Portions of said anchor plate are offset forwardly to form a series of sharppointed forward projections 60 arranged in a ring concentric with shaft 42, and a series of corresponding sockets 62 at the rearward face of said anchor plate. Detent plate 54 is also essentially flat and circular, having a square central aperture 64 in which shaft 42 is slidably but nonrotatably engaged. Said detent plate is provided at its forward face with a series of rounded detent projections 66 which are also arranged in a ring concentric to shaft 42 and which engage sockets 62 of the anchor plate. Retainer plate 56 is also flat and circular, and is rigidly afiixed to the rearward end of shaft 42 by a screw 68. Disposed between detent plate 54 and retainer plate 56 is a spring washer 70, which functions to urge said plates away from each other. As best shown in FIG. 3, it will be seen that detent plate 54 is provided at its periphery with a lip 72 which is turned rearwardly and then forwardly. Retainer plate 56 and spring washer 70 are enclosed in the rearwardly opening socket formed by said lip for the protection thereof, and the outer periphery of said lip is knurled, as indicated in FIGS. 1 and 2, to provide a good finger grip whereby said detent plate may be manually rotated. Anchor plate 52 is provided at its periphery with a rearwardly turned lip 74 which projects within the lip 72 of detent plate 54 to inhibit the entry of dirt and the like between said plates.

Spring washer 70 serves to urge detent plate 54 firmly against anchor plate 52 to hold detent projections 66 of the former in operative engagement with sockets 62 of the latter, and also to urge anchor plate 52 tightly against the outer surface of the rear wall of sleeve whereby sharp points 60 of the former are caused to indent sleeve 10 sharply, as shown in FIG. 3, whereby to secure said anchor plate against rotation relative to the sleeve. The plastic material of which the sleeve is formed is sufficiently soft to be indented in this manner. A full ring of points 60 is provided on the anchor plate, in order that regardless of the angular position of the anchor plate and regardless of the degree of curvature to which sleeve 10 may be formed, there will always be two or more points engaging said sleeve. Thus rotation of shaft 42 and pinion 38 is resisted yieldably by whatever rotative force is required to dislodge the rounded projections 66 of the detent plate from the sockets 62 of the anchor plate. This resistance to rotation of the pinion is sufliciently great that strap 4 may be drawn tightly enough about the wearers head to support any reasonable load imposed thereon by the eye shade 12 or other apparatus to be carried thereby, and will retain this degree of tightness. However, suflicient additional torque may be applied manually to detent plate 54, which may be termed a knob, to cam detent projections 66 out of sockets 62, whereby shaft 42 and pinion 38 may be rotated to adjust the effective circumference of the head band.

While I have shown and described a specific embodiment of my invention, it will be readily apparent that many minor changes of structure and operation could be made without departing from the spirit of the invention as defined by the scope of the appended claims.

What I claim as new and desire to protect by Letters Patent is:

1. An adjustable head band comprising:

(a) a flexible strap adapted to encircle the wearers head with the end portions thereof disposed in overlapping relation and having a pair of cooperating longitudinally elongated slots formed respectively in said end potrions, relatively opposite edges of said slots being toothed to form straight gear racks extending longitudinally of said strap,

(b) a flexible sleeve enclosing the overlapping end portions of said strap, said strap end portions being longitudinally slidable in said sleeve,

(0) a gear pinion carried rotatably by said sleeve and disposed therein, the axis of said pinion being disposed generally radially to the loop of said strap, said pinion being meshed at opposite sides thereof with the respective gear racks of said slots,

((1) a shaft aflixed to said pinion and extending axially therefrom to a point external to said sleeve,

(e) an anchor plate carried for rotation and axial sliding movement on said shaft externally to said sleeve and normally to said shaft, said anchor plate having a series of outwardly opening sockets formed therein and arranged in a ring concentric with said shaft,

(f) means preventing rotation of said anchor plate relative to said sleeve,

(g) a detent plate carried on said shaft outwardly from said anchor plate, said detent plate being axially slidable on said shaft but secured against rotation thereon, and having a series of rounded inward projections formed thereon in coinciding relation to the sockets of said anchor plate, said detent plate constituting a manually rotatable knob, and

(h) resilient means urging said detent plate toward and against said anchor plate, whereby the projections of the former are engaged in the sockets of the latter to resist yieldably any relative rotation of said plates.

2. An adjustable head band as recited in claim 1 wherein said sleeve is formed of relatively soft, indentable material, and wherein said means for preventing rotation of said anchor plate relative to said sleeve constitutes a plurality of sharp projections formed on the surface thereof adjacent said sleeve, said resilient means being operable to force said sharp points into indenting relationship to said sleeve.

3. An adjustable head band as recited in claim 2 with the addition of a retainer plate affixed to said shaft in outwardly spaced relation from said detent plate, said resilient means constiuting a compression spring interposed between said detent and retainer plates, whereby said detent plate is urged resiliently against saidanchor plate, and said anchor plate is urged against said sleeve.

References Cited UNITED STATES PATENTS 3/1960 Edwards et al. 28 X 5/1963 Bowers 2-8

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2926406 *Mar 27, 1959Mar 1, 1960George A LangfordLength adjustment mechanism
US3090046 *May 17, 1961May 21, 1963Fibre Metal Products CompanyAdjustable headband
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3729779 *Jun 7, 1971May 1, 1973Porth KSki boot buckle
US4115904 *Mar 18, 1977Sep 26, 1978Zwyro A.G.Lock for bracelets, belts and the like
US4422185 *Jun 11, 1980Dec 27, 1983Cook Reuben EWelding helmet
US4468045 *Jul 29, 1982Aug 28, 1984Sarazen Philip RAttachment system for detachable roller skates
US4783822 *Aug 8, 1986Nov 8, 1988The United States Of America As Represented By The Administrator Of The National Aeronautics And Space AdministrationMulti-adjustable headband
US5357654 *Mar 19, 1993Oct 25, 1994Hsing Chi HsiehRatchet diving mask strap
US5548841 *Jul 25, 1994Aug 27, 1996Mfd Enterprises, Inc.Apparatus for magnifying an image
US5727251 *Jul 24, 1996Mar 17, 1998Mfd Enterprises, Inc.Headband magnifier
US5949579 *Aug 1, 1997Sep 7, 1999Baker; Gary H.Flexible darkness adapting viewer
US5950245 *Apr 14, 1997Sep 14, 1999Mine Safety Appliances CompanyAdjustable headband with a ratchet mechanism having different resistances
US6012163 *Apr 17, 1998Jan 11, 2000Holloway; Michael GaryJeweler platinum welding eye-protection device
US6219851 *Aug 11, 1999Apr 24, 2001Kuo-Yun FangRing-band adjustment structure of crush helmet
US6230328Jan 3, 2000May 15, 2001Michael Gary HollowayJeweler platinum welding eye-protection device having a clip-on mount
US6298249 *Oct 8, 1998Oct 2, 2001Mine Safety Appliances CompanyRadio apparatus head-protective helmet
US6314588 *Apr 20, 2001Nov 13, 2001Kuo-Yun FangRing band adjustment structure of crash helmet
US6595635Oct 12, 2001Jul 22, 2003Mageyes, Inc.Apparatus for positioning a magnifying lens
US6708376 *Oct 1, 2002Mar 23, 2004North Safety Products Ltd.Length adjustment mechanism for a strap
US6817711May 20, 2003Nov 16, 2004Mageyes, Inc.Apparatus for positioning a lens
US8015625May 6, 2009Sep 13, 2011Specialized Bicycle ComponentsBicycle helmet adjustment mechanism
US8032993 *Jan 8, 2009Oct 11, 2011Bell Sports, Inc.Adjustment mechanism
US8056150 *Sep 30, 2008Nov 15, 2011Warrior Sports, Inc.Helmet adjustment system
US8116477 *Aug 13, 2007Feb 14, 2012Samsung Electronics Co., Ltd.Fit adjuster for a neckband type headset
US8156574Mar 12, 2008Apr 17, 2012Warrior Sports, Inc.Helmet adjustment system
US8160287 *May 22, 2009Apr 17, 2012Vocollect, Inc.Headset with adjustable headband
US8161576 *Feb 1, 2007Apr 24, 2012Sellstrom Manufacturing CompanyProtective headgear assembly
US8204267Jun 23, 2009Jun 19, 2012Sennheiser Electronic Gmbh & Co. KgEarphone and headset
US8249267Jun 29, 2009Aug 21, 2012Sennheiser Electronic Gmbh & Co. KgEarphone and headset
US20090211385 *Feb 24, 2009Aug 27, 2009DecathlonAdjusting device, especiall for a helmet
US20120167281 *Dec 30, 2010Jul 5, 2012Gennrich David JAdjustable and Vented Apparel Closure Assembly
EP0796568A1 *Mar 21, 1997Sep 24, 1997HTS Hans Torgersen & Sonn A/SAdjusting mechanism for bands, especially headbands
Classifications
U.S. Classification2/8.1, 24/68.00R, D29/109, 24/68.00B
International ClassificationA61F9/06, A61F9/04
Cooperative ClassificationA61F9/06
European ClassificationA61F9/06