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Publication numberUS3925821 A
Publication typeGrant
Publication dateDec 16, 1975
Filing dateJul 5, 1974
Priority dateJul 5, 1974
Publication numberUS 3925821 A, US 3925821A, US-A-3925821, US3925821 A, US3925821A
InventorsLester R Lewicki
Original AssigneeBell Helmets Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Air cooled helmet
US 3925821 A
Abstract
A helmet adapted especially for bicyclist wear comprising an outer shell or lamination adhered to an insulative or shock absorptive liner spaced, as worn, from the head of the wearer, the helmet having distributed air intake openings extending through the liner and from which entering air streams are directed rearwardly in cooling contact with the helmet and wearer by baffles formed as inward deflections of the outer shell.
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Description  (OCR text may contain errors)

[4 Dec. 16, 1975 United States Patent [191 Lewicki 3,344,433 10/1967 Stapenhill...............................

2/3 R 2/3 R OConnor............................... 2/3 R AIR COOLED HELMET 3,496,854 2/l970 Feldman et al. [75] Inventor. Eestter R. Lewickl, Woodland Hills, $783,450 H1974 Primary Examjrler Andrew V. Kundrat [73] Assignee:

Assistant Examiner-Pete'r Nerbun Attorney, Agent, or Firm-White and Haefliger Bell Helmets Inc., Long Beach, Calif; 1

[22] Filed:

ABSTRACT -A helmet adapted especially for bicyclist wear comprising an outer shell or'larnination adhered to an insulative or shock absorptive liner spaced, as worn, from the head of the wearer, the helmet having distributed air intake openings extending through the liner and from which entering air streams are directed rearwardly in cooling'contact with the helmet and wearer by' baffles formed as inward deflections of the 'outer shell.

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2mm x 2/3 R 15 (Plans, 6 Drawing Figures McDonough US. Patent Dec. 16,1975 Sheet 1 of2 3,925,821

U.S. Patent Dec. 16,1975 Sheet 2of2 3,925,821

.1! AIR COOLED HELMET BACKGROUND OF THE INVENTION Protective helmets of the types .worn for various safety' useages as in group or individual sports events have been known to present heat problems of discomfort to the wearers. Being constructed for safety, such helmets usually have liners which are shock absorptive but also thermally insulative, and even if spaced from the head of the wearer can cause discomfort as a result of either or both high body temperatures reached by' the wearer and highambient or atmospheric tempera tures."

V Particularly acute can be such disc'omforts experi- SUMMARY OF THE INVENTION The invention has forits generalobject to provide a novel helmet structure characterized by having distributed air intake openings in direct association with which,are,air guides or bafiles serving to positively deflect and direct-the entering air streams rearwardly.

within the helmet in cooling contact with the wearers head.

In keeping with its protective functions the invention contemplates a helmet construction comprising a shock absorptive liner spaced, as worn, from the users head and bonded to an outer shell, the liner and shell both containing the air intake openings with the air guides extending into the liner so that the entering air streams are directed angularly into the heat-liner spac- A particularly advantageous feature of the invention is utilization of the outer shell to form the air guides. By forming the shell as a rigid but deformable lamination it may be inwardly deflected at the intended air intake locations and cut to form the inlet openings. In .this manner a predetermined shell overall shape or contour may be preserved since the deflections are inwardly of the helmet.

These and additional features, objects and details of the invention will be more fully understood from the following description of an illustrative embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the helmet with an area broken away to expose a portion of the interior construction;

FIG. 2 is a side elevation of FIG. 1 with front and rear portions appearing in cross section;

FIG. 3 is a fragmentary enlarged section taken on line 3-3 of FIG. 1;

FIG. 4 is a fragmentary sectional enlargement taken on line 44 of FIG. 2;

FIG. 5 is an enlarged fragmentary section taken on line 55 of FIG. 2; and

FIG. 6 is a fragmentary sectional enlargement taken on line 66 of FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In general reference to the drawing the helmet is shown to comprise an outer essentially rigid but deformable shell 10 which may be made of suitable material such as laminated fiber glass or of molded plastic composition having the properties of protective rigidity and deformability to produce the later described air baffles and scoops. The shell 10 is bonded to a protective shock resistant liner 11 consisting typically of a rigid structural foam such as rigid polystyrene, rigid polyurethane or other semiflexible foams which desirably have open porosity to enhance evaporation of moisture received from the wearers'head.

Extending longitudinally of the helmet, i.e. from front to. rear, is a recess 01' groove 12 formed in the liner 11 to serve as a passage for a portion of the air admitted to the helmet interior. Spacer pads 13 positioned at opposite sides of the open recess 12 are mounted at 14 to the liner in a manner permitting their detachment and replacement by thicker or thinner pads as may be required to best fit the helmet to the head of the wearer.

As illustrated in FIG. 2 the helmet is provided at each side with buckle-like fasteners generally indicated at 15 from which straps 15a diverge to attachments at 16 inside the helmet, the fasteners 15 having extension 17 through which the straps extend adjustably to accommodate the helmet position and angle fore and aft of the wearer. Chin strap 18 adjustably terminates in the fasteners 15.

FIGS. 2 and 4 to 6 the shell is cut along edges 20, 21,

22 and 23 to pennit inward deflection of the shell to form concave forwardly tapering air baffles or deflectors 24, 25, 26 and rearwardly tapering scoops 27, the deflection inwardly from the edges 20 to 23 resulting in the formation of openings 28, 29, 30 and 31. As illustrated in FIG. 2 the side openings 24, 25 and 26 are progressively smaller toward the rear of the helmet as are the openings formed thereby, the sizes of the frontal baffles and openings being predetermined to prevent accidental penetration by a conventional bicycle handle bar. The rear baffles 27 with their inlets 31 are oppositely oriented to serve as air scoops for receiving the exhausting out of the helmet warm air that has passed over the wearers head.

At its top the helmet shell has similarly formed baffles 36, 37, 38 and 39, the frontal baffle 36 being relatively enlarged. These baflles direct the air streams entering through openings 40, 41 and 42 into the recess channel 12 rearwardly within the helmet toward the reversly oriented scoops 39 which receive and exhaust the air from the helmet. As shown in FIGS. 5 and 6 the liner is cut at 43, 44 and 45, 46 at the air inlet and exhaust locations, cuts 45 and 46 being angular, as illustrated, in the directions of the entering and exhaust air streams. Thus the baffles serve as aerodynamic scoops and internal air directors to trap, direct and force air inside the helmet producing a continuous air flow and exhaust at the rear .of the helmet.

In further reference to manufacture of the outer shell 10, the latter may be formed as a single piece unit either by injection molding or preferably by die and 3 cavity molding a resin impregnated fiber glass or equivalent material. Either in the molding operation or prior thereto the material may be cut to form the air inlet and the material preheated to facilitate formation of the baffles which harden as rigid inward deflections of the shell.

I claim:

1. A protective helmet including an outer shell containing distributed openings through which air streams enter the helmet by virtue of advancing movements of the wearer, and baffles angularly positioned at said openings to direct the entering air streams rearwardly of the helmet in cooling relation with the interior, said baffles being one-piece with the outer shell and projecting inwardly toward and within the helmet interior, the bafiles forming edges of the openings offset inwardly into the helmet interior, at least one baffle located at the helmet forward facing portion and having its edge located at the rearwardmost extent of said one baffle.

2. Helmet according to claim 1 including means spacing the helmet from the head of the wearer allowing passage of the directed air.

3. Helmet according to claim 1 having a liner adhered to the shell and in which said baffles project into openings in the liner.

4. Helmet according to claim 3 in which said baffles are concave inwardly of the shell.

5. Helmet according to claim 4 in which the sides of said baffles converge toward the front of the helmet.

6. Helmet according to claim 5 in which said openings are generally alined in the top and sides of the shell 4 and the side openings progressively reduce in size rearwardly of the shell.

7. Helmet according to claim 3 in which said liner has an open top recess extending longitudinally of the he]- met and into which air enters through a series of said baffled openings.

8. Helmet according to claim 1 including means spacing the helmet from the head of the wearer allowing passage of the directed air.

9. Helmet according to claim 1 in which the shell is bonded to a shock resistant liner and the baffles project into openings in the liner.

l0. Helmet according to claim 9 in which said shell forms concave baffles as continuations of the shell frontally thereof and discontinuances rearwardly of the shell to allow air entry past the baffles.

11. Helmet according to claim 10 in which the sides of the baffles converge toward the front of the shell.

12. Helmet according to claim 1 l in which said openings are generally alined in the top and sides of the shell and the side opening progressively reduce in size rearwardly of the shell.

13. Helmet according to claim 9 in which said liner has an open top recess extending longitudinally of the helmet and into which air enters through a series of said baffled openings.

14. Helmet according to claim 11 including also air scoops in the rear of the helmet to gather and exhaust air therefrom.

l5. Helmet according to claim 14 in which said air scoops also are inward deflections of the shell.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US935556 *May 18, 1909Sep 28, 1909Charles A H SmithHat-ventilating attachment.
US1347046 *Jan 16, 1920Jul 20, 1920Mcdonough Martin TMiner's cap
US3344433 *Aug 30, 1965Oct 3, 1967Sierra Eng CoCrash helmet
US3496854 *Mar 5, 1968Feb 24, 1970Ilc Ind IncVentilated helmet
US3783450 *Feb 5, 1973Jan 8, 1974Connor W OHockey helmet
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4054953 *Aug 30, 1976Oct 25, 1977Philippe De BarsyCrash helmet
US4075714 *Nov 15, 1976Feb 28, 1978Sierra Engineering Co.Helmet characterized by negative lift
US4081865 *Jul 8, 1977Apr 4, 1978Bergee Mark AProtective helmet and ventilating system therefor
US4101981 *Apr 15, 1977Jul 25, 1978Boden Ogden WVentilated hat or cap
US4114201 *May 12, 1977Sep 19, 1978Garrison Harold KVentilated head cover
US4115874 *Sep 15, 1977Sep 26, 1978Masahiro HasegawaHelmet for use in riding vehicles
US4124904 *Oct 17, 1977Nov 14, 1978Matthes John AProtective head gear
US4141085 *Sep 22, 1977Feb 27, 1979Adams Sr JohnVented helmet and face shield
US4271537 *May 14, 1979Jun 9, 1981Wichita Pro-Tech Inc.Protective helmet with releasable face guard apparatus
US4274157 *Apr 27, 1978Jun 23, 1981Boden Ogden WHat or cap with adjustable band
US4404690 *Aug 21, 1981Sep 20, 1983Amer Sport International Inc.Hockey helmet
US4461044 *Jun 4, 1982Jul 24, 1984Bell Helmets Inc.Bicycle helmet retention system with quick disconnect
US4476589 *Nov 16, 1981Oct 16, 1984Dadant & Sons Inc.In a unitary helmet made entirely of plastic
US4519099 *Aug 31, 1983May 28, 1985Honda Giken Kogyo Kabushiki KaishaHelmet
US4538303 *Jul 29, 1983Sep 3, 1985Romer GmbhProtective helmet
US4550445 *May 4, 1984Nov 5, 1985Fender David AVentilated athletic cap
US4555816 *Jan 23, 1984Dec 3, 1985Bell Helmets Inc.Ventilated helmet
US4586200 *Mar 26, 1984May 6, 1986Poon Melvyn CProtective crash helmet
US4612675 *Mar 7, 1985Sep 23, 1986Bell Helmets Inc.Motorcyclist or bicyclist
US4619003 *Nov 25, 1985Oct 28, 1986Bell Helmets Inc.Insulated helmet
US4622700 *Dec 9, 1985Nov 18, 1986Bell Helmets Inc.Suction ventilated helmet
US4698856 *Sep 22, 1986Oct 13, 1987Michio AraiVentilated helmet
US4766614 *Dec 31, 1986Aug 30, 1988Cantwell Jay SVentilated protective headgear
US4897888 *Dec 7, 1988Feb 6, 1990Bell Bicycles, Inc.Helmet strap clip, and assembly
US4903348 *Sep 26, 1988Feb 27, 1990Bell Bicycles, Inc.Helmet with strap holder
US4903350 *Jun 28, 1988Feb 27, 1990Giro Sport Design, Inc.Aerodynamically streamlined bicycle racing helmet
US4970729 *Feb 6, 1990Nov 20, 1990Honda Motor Co., Ltd.Helmet
US4995117 *Nov 16, 1989Feb 26, 1991James A. Mirage(Airlock) bicycle helment with adjustable ventilation systems and accessories
US5010598 *Feb 2, 1990Apr 30, 1991Britax Child-Care Products Pty. Ltd.Safety helmet
US5083320 *Dec 24, 1990Jan 28, 1992Athletic Helmet, Inc.Protective helmet with self-contained air pump
US5093936 *Nov 20, 1990Mar 10, 1992Itech Sport Products Inc.Protective headgear and detachable face protector
US5099523 *Jan 25, 1991Mar 31, 1992Bell Bicycles, Inc.Reinforced expanded plastic helmet construction
US5123121 *Mar 13, 1991Jun 23, 1992Bell Helmets, Inc.Helmet retention system with adjustable buckle
US5129108 *Dec 31, 1991Jul 14, 1992Itech Sport Products Inc.Protective headgear and detachable face protector
US5269025 *Oct 15, 1991Dec 14, 1993Bell Bicycles, Inc.Reinforced expanded plastic helmet construction
US5298208 *Nov 1, 1991Mar 29, 1994Athletic Helmet, Inc.Method for molding a protective helmet
US5337421 *Mar 8, 1993Aug 16, 1994Jeng Yen MingAir ventilation helmet
US5450631 *Sep 17, 1993Sep 19, 1995Specialized Bicycle Components, Inc.Bicycle helmet
US5477563 *Oct 21, 1993Dec 26, 1995Giro Sport Design, Inc.Helmet having a planar-molded infrastructure
US5651145 *Sep 11, 1995Jul 29, 1997Specialized Bicycle Components, Inc.Bicycle helmet
US5659900 *Jul 8, 1993Aug 26, 1997Bell Sports, Inc.Sizing and stabilizing apparatus for bicycle helmets
US5745924 *Jan 16, 1997May 5, 1998Specialized Bicycle Components, Inc.Bicycle helmet
US5765234 *Mar 24, 1997Jun 16, 1998ZedelProtective helmet with positioning knobs adjustable to the head size
US5774900 *Jun 24, 1996Jul 7, 1998Institute Of Occupational Safety And Health, Council Of Labor AffairsIndustrial safety helmet
US5774901 *Aug 15, 1996Jul 7, 1998Bell Sports, Inc.Sport helmet retention apparatus
US5829065 *Jun 24, 1996Nov 3, 1998Cahill; Kevin J.Industrial protective helmet
US5887288 *Oct 19, 1995Mar 30, 1999Bell Sports, Inc.Sizing and stabilizing apparatus for bicycle helmets
US6009561 *Aug 26, 1998Jan 4, 2000Bell Sports Inc.Helmet with rotatable accessory mount and method of making the same
US6009562 *Aug 26, 1998Jan 4, 2000Bell Sports, Inc.Helmet with accessory mounting apparatus and method of making the same
US6105176 *Sep 17, 1998Aug 22, 2000Specialized Bicycle Components, Inc.Bicycle helmet
US6305030 *May 7, 1999Oct 23, 2001Brico S.R.L.Crash helmet for sports, in particular cycling
US6339849May 13, 1999Jan 22, 2002Keith J. NelsonSoccer helmet
US6367084 *Mar 5, 1999Apr 9, 2002Simon J. KeastHeadwear
US6442765Mar 24, 2000Sep 3, 2002Vincent FallonSafety helmet
US6883183 *Feb 23, 2004Apr 26, 2005Stryke Lacrosse, Inc.Protective sport helmet
US7802319Jul 26, 2006Sep 28, 2010Sheila ShaverHelmet with rearward access aperture
US7904971May 19, 2005Mar 15, 2011Mine Safety Appliances CompanyProtective padding and protective padding systems
US7987525 *Jun 29, 2007Aug 2, 2011KlimHelmet
US8640264 *Jul 1, 2010Feb 4, 2014Jon RamerCap which utilizes an airfoil effect for inducing cooling
US20120000006 *Jul 1, 2010Jan 5, 2012Jon Vincent RamerUtilising an airfoil effect for inducing cooling in a baseball cap, A.K.A. "Air Cap"
USRE34699 *Feb 3, 1993Aug 23, 1994Itech Sport Products Inc.Protective headgear and detachable face protector
EP0096148A1 *Jun 10, 1982Dec 21, 1983Ab Akta BarnsäkerhetA helmet for use in recreational activity
EP0291308A1 *May 12, 1988Nov 17, 1988Honda Giken Kogyo Kabushiki KaishaSafety helmet
EP0394726A1 *Apr 6, 1990Oct 31, 1990Sportliner Diffusion S.A.Protective garment
EP0799581A1 *Apr 1, 1997Oct 8, 1997ZedelProtective helmet with positioning members adjustable to head size
WO1992021256A1 *Jun 3, 1992Dec 10, 1992Illbruck GmbhSports helmet
WO2000057739A1 *Mar 24, 2000Oct 5, 2000Skoot Int LtdSafety helmet
WO2004019717A2 *Aug 4, 2003Mar 11, 2004Cbm Distrib EurlProtective helmet comprising articulated front shell and rear shell
WO2007040604A2 *Mar 24, 2006Apr 12, 2007Mine Safety Appliances CoProtective padding and protective padding systems
Classifications
U.S. Classification2/425, 2/171.3, 2/903
International ClassificationA42B3/28, A42B3/12
Cooperative ClassificationY10S2/903, A42B3/281
European ClassificationA42B3/28B
Legal Events
DateCodeEventDescription
Apr 19, 2001ASAssignment
Owner name: FLEET NATIONAL BANK AS ADMINISTRATIVE AGENT, MASSA
Free format text: FIRST SUPPLEMENTAL PATENT COLLATERAL ASSIGNMENT AND SECURITY AGREEMENT, ATTACHED HERETO AS EXHIBIT 1.;ASSIGNOR:BELL SPORTS, INC;REEL/FRAME:011731/0001
Effective date: 20010321
Owner name: FLEET NATIONAL BANK AS ADMINISTRATIVE AGENT 100 FE
Free format text: FIRST SUPPLEMENTAL PATENT COLLATERAL ASSIGNMENT AND SECURITY AGREEMENT, ATTACHED HERETO AS EXHIBIT 1.;ASSIGNOR:BELL SPORTS, INC /AR;REEL/FRAME:011731/0001
Oct 20, 1992ASAssignment
Owner name: BELL SPORTS, INC., A CORP. OF CA
Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BARCLAYS BUSINESS CREDIT, INC.;REEL/FRAME:006318/0077
Effective date: 19920417
Mar 8, 1990ASAssignment
Owner name: BARCLAYS BUSINESS CREDIT, INC., A CT. CORP.
Free format text: SECURITY INTEREST;ASSIGNOR:BELL HELMETS INC.;REEL/FRAME:005277/0450
Effective date: 19891116
Mar 16, 1987AS02Assignment of assignor's interest
Owner name: BELL BICYCLE, INC., 15301 SHOEMAKER AVENE, NORWALK
Owner name: BELL HELMETS INC., A CA. CORP.
Effective date: 19860529
Mar 16, 1987ASAssignment
Owner name: BELL BICYCLE, INC., 15301 SHOEMAKER AVENE, NORWALK
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BELL HELMETS INC., A CA. CORP.;REEL/FRAME:004681/0369
Effective date: 19860529
Sep 5, 1980AS06Security interest
Owner name: BELL HELMETS, INC.
Owner name: NATIONAL ACCEPTANCE COMPANY OF CALIFORNIA, 10960 W
Effective date: 19800819