WO2009047795A2 - Bolt free helmet - Google Patents

Bolt free helmet Download PDF

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Publication number
WO2009047795A2
WO2009047795A2 PCT/IN2008/000638 IN2008000638W WO2009047795A2 WO 2009047795 A2 WO2009047795 A2 WO 2009047795A2 IN 2008000638 W IN2008000638 W IN 2008000638W WO 2009047795 A2 WO2009047795 A2 WO 2009047795A2
Authority
WO
WIPO (PCT)
Prior art keywords
helmet
bolt
forms
free
present
Prior art date
Application number
PCT/IN2008/000638
Other languages
French (fr)
Other versions
WO2009047795A3 (en
Inventor
Vaibhav Gupta
Original Assignee
Mku Pvt Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mku Pvt Ltd filed Critical Mku Pvt Ltd
Publication of WO2009047795A2 publication Critical patent/WO2009047795A2/en
Publication of WO2009047795A3 publication Critical patent/WO2009047795A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/08—Chin straps or similar retention devices
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
    • A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures

Definitions

  • the present invention relates generally to helmets, and, more particularly, to a bolt-free helmet capable of being used as a ballistic protection helmet.
  • Helmet is a protective gear worn on a head portion of a user to protect it from injuries.
  • the helmet includes a securement system, such as a chin strap, a nape strap and the like, for removably securing the helmet to a head portion of a user.
  • Helmets may be used for various purposes such as recreational activities, sports, construction, mining, police and military applications.
  • the police, military and other law enforcement agencies personnel wear the helmet to protect their head from hand held firearms and high velocity fragments. It is important that the helmet needs to be securely mounted on the wearer's head. Otherwise, the helmet may shift its position or even come off in the, case of sudden jerk such as windblast and the like.
  • the securement system is secured to the helmet by means of screws, bolts and like.
  • the screws and bolts are passed through plurality of holes configured in the shell portion of the helmet.
  • the plurality of holes configured in the shell portion of helmet reduces the degree of protection provided by the helmet. More specifically, any hole in the shell of helmet reduces strength of the helmet near the hole. Further, the overall strength of helmet gets reduced on account of the plurality of holes.
  • the general purpose of the present invention is to provide a bolt-free helmet configured to include all the advantages of the prior art, and to overcome the drawbacks inherent therein.
  • an object of the present invention is to provide a bolt-free helmet, which is capable of protecting a head portion of a user from injuries.
  • Another object of the present invention is to provide a bolt-free helmet, which is devoid of any holes on a shell portion thereof.
  • Yet another object of the present invention is to provide a bolt-free helmet, which is capable of being securely placed on a head portion of a user.
  • the present invention provides a bolt-free helmet.
  • the bolt- free helmet includes a plurality of helmet pre-forms and an elongated band. At least one outer pre-form of the plurality of pre-forms includes a plurality of slots.
  • the elongated band configured to be received in the plurality of slots of the at least one outer pre-form of the plurality of pre-forms to form a framework for securing a chin strap mechanism thereto.
  • the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
  • the bolt-free helmet includes a plurality of helmet pre-forms, a plurality of strips and an elongated band.
  • At least one outer preform of the plurality of pre-forms includes a plurality of slots.
  • Each of the plurality of strips is configured to be received in one of the plurality of slots to form a loop therein.
  • the elongated band is configured to be received in plurality of loops formed by the each of the plurality of strips.
  • the elongated band is configured to form a framework for securing a chin strap mechanism thereto. Further, the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
  • the bolt-free helmet includes a plurality of helmet pre-forms, a plurality of strips and an elongated band.
  • the plurality of strips is configured to form a plurality of loops.
  • the plurality of loops is configured to be secured to at least one outer pre-form of the plurality of pre-forms by means of an adhesive.
  • the elongated band is configured to be received in the plurality loops to form a framework for securing a chin strap mechanism thereto.
  • the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
  • the bolt-free helmet includes a plurality of helmet pre-forms, a plurality of fabric pieces and a plurality elongated strips.
  • Each of the plurality of fabric pieces includes a first face and a second face opposite to the first face.
  • Each of the plurality of elongated strips includes a first end portion and a second end portion. The first end portion of the each of the plurality elongated strip secured to an attachment means and the second end portion of the each of the plurality of elongated strips secured to the second face of the each of the plurality of fabric pieces.
  • each of the plurality of fabric pieces along with the second end portion of the each of the plurality of elongated strips is secured to at least one outer helmet pre-form of the plurality of helmet pre-forms by means of an adhesive.
  • the attaching means of the each of the plurality of elongated strips is configured to be secured to a chin strap mechanism; the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
  • FIG. 1 illustrates a perspective view of a bolt-free helmet, according to an embodiment of the present invention
  • FIG. 2 illustrates a top view of an outer pre-form of the plurality of preforms including a plurality of slots, according to an embodiment of the present invention
  • FIG. 3 illustrates a top view of an outer pre-form of the plurality of preforms including a plurality of slots, according to an another embodiment of the present invention
  • FIG. 4 illustrates a perspective view of a shell of the bolt-free helmet including a framework formed by an elongated band, according to an embodiment of the present invention
  • FIG. 5 illustrates a perspective view of a bolt-free helmet, acc6r ⁇ ing'R) "o another embodiment of the present invention
  • FIG. 6 illustrates a top view of an outer pre-form of the plurality of preforms including a plurality of slots, according to another embodiment of the present invention
  • FIG. 7 illustrates a top view of an outer pre-form of the plurality of preforms including a plurality of slots, according to an another embodiment of the present invention
  • FIG. 8 illustrates a front view of one strip of the plurality of strips configured ⁇ to form a loop, according to another embodiment of the present invention
  • FIG. 9 illustrates a perspective view illustrating the one strip of the plurality of strips received in one of the plurality of slots of the outer pre-form of the plurality of pre-forms to form a loop therein , according to another embodiment of the present invention
  • FIG. 10 illustrates a perspective view of the plurality of pre-forms including the outer pre-form along with a plurality of loops configured to form a shell of the bolt-free helmet of the FIG. 5, according to another embodiment of the present invention
  • FIG. 1 1 illustrates a perspective view of a shell of the bolt-free helmet of the FIG. 5 including a framework formed by an elongated band, according to another embodiment of the present invention
  • FIG. 12 illustrates a perspective view of a bolt-free helmet, according to yet another embodiment of the present invention.
  • FIG. 13 illustrates a top view of an outer pre-form of the plurality of preforms, according to yet another embodiment of the present invention
  • FIG. 14 illustrates a front view of one strip of the plurality of strips configured to form a loop, according to yet another embodiment of the present invention
  • FIG. 15 illustrates a perspective view of a bolt-free helmet, according to yet another embodiment of the present invention.
  • FIG. 16 illustrates a top view of an outer pre-form of the plurality of preforms, according to yet another embodiment of the present invention.
  • FIG. 17 illustrates a perspective view of a shell of the bolt-free helmet illustrating a plurality of fabric pieces and a plurality of elongated strips, according to yet another embodiment of the present invention
  • FIG. 18 illustrates a perspective view of the bolt-free helmet illustrating a plurality of cushion pads, according to yet another embodiment of the present invention
  • the present invention provides a bolt-free helmet for protecting a head portion of a user from injuries.
  • Helmets including the bolt-free helmet of the present invention include plurality of helmet pre-forms to form a shell portion of the helmets.
  • the number of the plurality of helmet pre-forms decides the degree of protection offered by a helmet.
  • the number of the plurality of helmet pre-forms used depends on a field where the helmet is used. For example, the helmet used in Police, military and other law enforcement agencies operations requires more number of the plurality of the helmet pre-forms then for the helmet used while driving a vehicle.
  • the bolt-free helmet 100 includes a plurality of helmet pre-forms, such as an at least one outer pre-form 102 (shown in FIG. 2 and FIG.3) and an elongated band 104 (shown in FIG. 4).
  • the plurality of helmet pre-forms such as the at least one outer pre-form
  • each of the plurality of helmet pre-forms may be configured to have a variety of shapes, in one embodiment of the present invention as shown in FIG. 2 and 3, each of the plurality of pre-forms is configured to have a shape of a flower.
  • each of the plurality of pre-forms of the flower shape includes a plurality of petals, such as a petal 106a, a petal 106b, a petal 106c, a petal 106d, a petal 106e and a petal 106f (hereinafter collectively referred to as "plurality of petals 106").
  • the plurality of helmet pre-forms may be composed from various materials known for making helmets.
  • the plurality of helmet pre-forms may be composed of a composite fabric material.
  • the plurality of helmet pre-forms may be composed of an Aramid or a para-Aramid fabric.
  • the plurality of helmet preforms may be composed of a polyethylene fabric.
  • the at least one outer pre-form 102 of the plurality of helmet pre-forms includes a plurality of slots such as, a slot 108a, a slot 108b, and a slot 108c (hereinafter collectively referred to as "plurality of slots 108")- More specifically, as shown in FIG. 2 and FIG. 3, each alternate petal of the plurality of petals 106 includes the plurality of slots 108 such as the slot 108a, the slot 108b, and the slot 108c. In one embodiment of the present invention, each petal of the plurality of petals 106 includes at least one slot. Each slot of the plurality of slots 108 includes two parallel cuts, such as a cut 1 10a and a cut 1 10b (hereinafter referred to as "two parallel cuts 110"), prepared on the at least one outer pre-form 102.
  • two parallel cuts 110 such as a cut 1 10a and a cut 1 10b
  • the plurality of slots 108 is disposed perpendicular to a radius 112 of the at least one outer pre-form 102.
  • the two parallel cuts 110 of the plurality of slots 108 disposed perpendicular to the radius 112 are spaced at approximately 20-30 mm away from each other. Further, in one embodiment of the present invention, the length of each cut of the two parallel cuts 110 is about 15 to 25 mm.
  • the plurality of slots 108 is disposed parallel to the radius 1 12 of the at least one outer pre-form 102.
  • the two parallel cuts 1 10 of the plurality of slots 108 disposed parallel to the radius 112 are spaced at about 20 to 30 mm away from each other. Further, in one embodiment of the present invention, the length of each cut of the two parallel cuts 110 is about 15 to 25 mm.
  • the plurality of helmet pre-forms including the at least one outer pre-form 102 is then molded to form a shell 1 14 (shown in FIG. 4) of the bolt- free helmet 100 by conventional helmet shell molding process known in the art. So as to preclude sticking of the plurality of slots 108 to the shell 114 of the bolt-free helmet 100, non stick paper or other suitable material is inserted between the plurality of slots 108 and the plurality of pre-forms before applying heat and pressure required for molding. The plurality of slots 108 is configured to receive the elongated band 104 therein. [0042] As shown in FIG.
  • the elongated band 104 is configured to be received in the plurality of slots of the at least one outer pre-form 102 of the plurality of helmet pre-forms to form a framework for securing a chin strap mechanism 116 thereto.
  • the two end portions of the elongated band 104 may be securely disposed over each other in the slot 108a for forming a sturdy structure of the framework.
  • the chin strap mechanism 116 may be secured to the framework formed by the elongated band 104 by various means and methods known in the art. Further, the chin strap mechanism 116 is configured to removably secure the bo It- free helmet to a head portion of a user.
  • the chin strap mechanism 116 may be selected from any of the chin strap mechanism known in the art.
  • the chin strap mechanism 1 16 may include a nape strap for securing the bolt- free helmet 100 to a nape portion of the user.
  • the bolt-free helmet 200 includes a plurality of helmet pre-forms, such as at least one outer helmet pre-form 202 (shown in FIG. 6 and FIG. 7); a plurality of strips, such as a strip 204a (shown in FIG. 8); and an elongated band 206 (shown in FIG. 11).
  • a plurality of helmet pre-forms such as at least one outer helmet pre-form 202 (shown in FIG. 6 and FIG. 7); a plurality of strips, such as a strip 204a (shown in FIG. 8); and an elongated band 206 (shown in FIG. 11).
  • the plurality of helmet pre-forms such as the at least one outer pre-form
  • each of the plurality of helmet pre-forms may be configured to have a variety of shapes, in one embodiment of the present invention as shown in FIG. 6 and 7, each of the plurality of pre-forms is configured to have a shape of a flower.
  • each of the plurality of pre-forms of the flower shape includes a plurality of petals, such as a petal 208a, a petal 208b, a petal 208c, a petal 208d, a petal 208e and a petal 208f (hereinafter collectively referred to as "plurality of petals 208").
  • the plurality of helmet pre-forms may be composed from various materials known for making ballistic helmets.
  • the plurality of helmet pre-forms is composed of a composite fabric material.
  • the plurality of helmet pre-forms may be composed of an Aramid or a para-Aramid fabric.
  • the plurality of helmet preforms may be composed of a polyethylene fabric.
  • the at least one outer pre-form 202 of the plurality of helmet pre-forms includes a plurality of slots such as, a slot 210a, a slot 210b, and a slot 210c (hereinafter collectively referred to as "plurality of slots 210").
  • each alternate petal of the plurality of petals 208 includes the plurality of slots 210 such as the slot 210a, the slot 210b, and the slot 210c.
  • each petal of the plurality of petals 208 includes at least one slot.
  • Each slot of the plurality of slots 210 includes two parallel cuts, such as a cut 212a and a cut 212b (hereinafter referred to as "two parallel cuts 212"), prepared on the at least one outer pre-form 202.
  • the plurality of slots 210 is disposed perpendicular to a radius 214 of the at least one outer pre-form 202.
  • the two parallel cuts 212 of the plurality of slots 210 disposed perpendicular to the radius 214 are spaced at approximately 20-30 mm away from each other. Further, in one embodiment of the present invention, the length of each cut of the two parallel cuts 212 is about 15 to 25 mm.
  • the plurality of slots 210 is disposed parallel to the radius 214 of the at least one outer pre-form 202.
  • the two parallel cuts 212 of the plurality of slots 210 disposed parallel to the radius 214 are spaced at about 20 to 30 mm away from each other. Further, in one embodiment of the present invention, the length of each cut of the two parallel cuts 212 is about 15 to 25 mm.
  • Each of the plurality of slots 210 is configured to receive one of the plurality of strips, such as the strip 204a (shown in FIG. 8), therein.
  • each of the plurality of strips is about 115 to 125 mm in length and 20 to 40 mm in width.
  • the strip 204a includes two dashed lines, such as a dashed line 216a and a dashed line 216b, spaced apart from longitudinal edges, such as a longitudinal edge 218a and longitudinal edge 218b, of the strip 204a.
  • the dashed line 216a and the dashed line 216b are spaced apart at about 5 to 15 mm respectively from the longitudinal edge 218a and the longitudinal edge 218b of the strip 204a.
  • the strip 204a is folded on both sides along the dashed line 216a and the dashed line 216b to facilitate the strip 204a be used as a loop 220 (shown in FIGS 9-11).
  • the plurality of strips may be composed of a composite fabric material.
  • the plurality of strips may be composed of an Aramid or a para-Aramid fabric.
  • the plurality of strips such as the strip 204a is configured to be received in one of the plurality of slots 210, such as the slot 210a, to form the loop 220 therein.
  • the strip is pulled on both the ends so that it falls flat on the pre-form.
  • the plurality of helmet pre-forms including the at least one outer pre-form 202 is then molded to form a shell 222 (shown in FIG. 5 and FIG. 11) of the bolt-free helmet 200 by conventional helmet shell molding process known in the art.
  • non stick paper or other suitable material is inserted between the plurality of loops and the plurality of pre-forms before applying heat and pressure required for molding.
  • the plurality of loops is configured to receive the elongated band 206 therein.
  • the elongated band 206 is configured to be received in the plurality of loops to form a framework for securing a chin strap mechanism 224 (shown in FIG. 5) thereto.
  • the two end portions of the elongated band 206 may be securely disposed over each other in the loop 220 for forming a sturdy structure of the framework.
  • the chin strap mechanism 224 may be secured to the framework formed by the elongated band 206 by various means and methods known in the art. Further, the chin strap mechanism 224 is configured to removably secure the bolt-free helmet 200 to a head portion of a user.
  • the chin strap mechanism 224 may be selected from any of the chin strap mechanism known in the art.
  • the chin strap mechanism 224 may include a nape strap for securing the bolt-free helmet 200 to a nape portion of the user.
  • the elongated band 206 is composed of a plastic material. But the elongated band 206 may also be composed of any other material such as lather, a composite fabric and the like. [0050] Now referring to FIG. 12 to FIG. 14, in yet another embodiment of the present invention, disclosed is a bolt-free helmet 300.
  • the bolt-free helmet 300 includes a plurality of helmet pre-forms, such as an at least one outer helmet pre-form 302 (shown in FIG.13); a plurality of strips, such as a strip 304a (shown in FIG. 14); and an elongated band (not shown).
  • the plurality of helmet pre-forms such as the at least one outer pre-form
  • each of the plurality of helmet pre-forms may be configured to have a variety of shapes, in one embodiment of the present invention as shown in FIG. 13, each of the plurality of pre-forms is configured to have a shape of a flower.
  • each of the plurality of pre-forms of the flower shape includes a plurality of petals, such as a petal 306a, a petal 306b, a petal 306c, a petal 306d, a petal 306e and a petal 306f (hereinafter collectively referred to as "plurality of petals 306").
  • the plurality of helmet pre-forms may be composed from various materials known for making ballistic helmets.
  • the plurality of helmet pre-forms is composed of a composite fabric material.
  • the plurality of helmet pre-forms may be composed of an Aramid or a para-Aramid fabric.
  • the plurality of helmet pre-forms may be composed of a polyethylene fabric.
  • each of the plurality of strips such as the strip 304a is configured to form a loop similar to the loop 220 illustrated in Figure 9 and Figure 10.
  • the plurality of loops formed from each of the plurality of strips is configured to be secured to the at least one outer pre-form 302 of the plurality of preforms by means of an adhesive.
  • the adhesive may be any engineering and structural epoxy, acrylic, and polyurethane adhesives.
  • the adhesive may be the adhesive developed by "Resinova Chemie Ltd.” that is sold under the trademark "PG 100".
  • the loop is incorporated in a rubberized base (not shown).
  • the rubberized base along with the loop is configured to be secured to the at least one outer pre-form 302 of the plurality of pre-forms by means of the adhesive. Further, the rubberized base is configured to provide cushion to the head of the wearer. Further, the plurality of helmet pre-forms including the at least one outer pre-form 302 is then molded to form a shell 308 of the bolt-free helmet 300 by conventional helmet shell molding process known in the art.
  • the plurality of loops is configured to receive the elongated band therein.
  • the elongated band is similar in structure and configuration to the elongated band 204a. Further, the elongated band is configured to be received in the plurality of loops, to form a framework for securing a chin strap mechanism 310 thereto.
  • the chin strap mechanism 310 may be secured to the framework formed by the elongated band by various means and methods known in the art. Further, the chin strap mechanism 310 (shown in FIG. 12) is configured to removably secure the bolt-free helmet to a head portion of a user.
  • the chin strap mechanism 310 may be selected from any of the chin strap mechanism known in the art.
  • the chin strap mechanism 310 may include a nape strap for securing the bolt-free helmet 300 to a nape portion of the user.
  • the elongated band is composed of a plastic material. But the elongated band may also be composed of any other material such as lather, a composite fabric and the like.
  • the bolt-free helmet 400 includes a plurality of helmet pre-forms, such as an at least one outer helmet pre-form 402 (shown in FIG.16); a plurality of fabric pieces (shown in FIG. 17), such as a fabric piece 404a, a fabric piece 404b and a fabric piece 404c (hereinafter collectively referred to as "plurality of fabric pieces 404") ; and a plurality elongated strips (shown in FIG. 17), such as an elongated strip 406a, an elongated strip 406b, an elongated strip 406c (hereinafter collectively referred to as "plurality of elongated strips 406").
  • helmet pre-forms such as an at least one outer helmet pre-form 402 (shown in FIG.16); a plurality of fabric pieces (shown in FIG. 17), such as a fabric piece 404a, a fabric piece 404b and a fabric piece 404c (hereinafter collectively referred to as "plu
  • the plurality of helmet pre-forms including the at least one outer helmet pre-form 402 is configured to be molded to form a shell 408 (shown in FIG. 15) of the bolt-free helmet 400 by conventional helmet shell molding process known in the art.
  • each ot the plurality of helmet pre-forms may be configured to have a variety of shapes, in one embodiment of the present invention as shown in FIG. 16, each of the plurality of pre-forms is configured to have a shape of a flower.
  • each of the plurality of pre-forms of the flower shape includes a plurality of petals, such as a petal 410a, a petal 410b, a petal 410c, a petal 41Od, a petal 41Oe and a petal 41Of (hereinafter collectively referred to as "plurality of petals 410").
  • the plurality of helmet pre-forms may be composed from various materials known for making ballistic helmets.
  • the plurality of helmet pre-forms is composed of a composite fabric material.
  • the plurality of helmet pre-forms may be composed of an Aramid or a para-Aramid fabric.
  • the plurality of helmet pre-forms may be composed of a polyethylene fabric.
  • the plurality of fabric pieces 404 is configured to be secured to the at least one outer helmet pre-form 402 of the plurality of helmet pre-forms.
  • Each of the plurality of fabric pieces 404 includes a first face 412 and a second face (not shown) opposite to the first face 412. The second face is configured be secured to the at least one outer helmet pre-form 402 of the plurality of helmet pre-forms.
  • the plurality of fabric pieces 404 may be composed from various fabric materials. In one embodiment of the present invention, the each of the plurality of fabric pieces 404 may be composed of an aramid fabric.
  • each of the plurality of elongated strips 406 includes a first end portion 414 and a second end portion 416.
  • the first end portion 414 of the each of the plurality elongated strips 406 is secured to an attachment means 418.
  • the attachment means 418 may be at least one of a D-ring, a hook, a buckle, and a loop.
  • the attachment means 418 may be composed of various non-corrosive materials such as but limited to a brass material.
  • the plurality of elongated strips 406 may be composed of various materials such as but not limited to a nylon material.
  • the attachment means 418 secured to the first end portion 414 may be different for each of the plurality of elongated strips 406.
  • the first end portion 414 of the elongated strip 406a includes a D-ring; the first end portion 414 of the elongated strip 406b may include a buckle; and the first end portion 414 of the elongated strip 406c may include a loop.
  • the 406 is secured to the second face of the each of the plurality of fabric pieces 404.
  • the second end portion 416 of the each of the plurality of elongated strips 406 may secured to the first face 412 of the each of the plurality of fabric pieces 404.
  • the each of the plurality of elongated strips 406 is stitched to the second face of the each of the plurality of fabric pieces 404.
  • the each of the plurality of elongated strips may be secured to the second face of the each of the plurality of fabric pieces 404 by means of an adhesive.
  • the each of the plurality of fabric pieces 404 along with the second end portion 416 of the each of the plurality of elongated strips 406 is secured to at least one outer pre-form 402 of the plurality of pre-forms by means of an adhesive.
  • the adhesive may be any engineering and structural epoxy, acrylic, and polyurethane adhesives.
  • the adhesive may be the adhesive developed by "Resinova Chemie Ltd.” that is sold under the trademark "PG 100".
  • a chin strap mechanism 420 (shown in FIG. 15 and FIG. 18) is secured to the attaching means 418 of the each of the plurality of elongated strips 406.
  • the chin strap mechanism 420 is secured to the attaching means 418 of the each of the plurality of elongated strips by various means and methods known in the art.
  • the chin strap mechanism 420 is configured to removably secure the bolt-free helmet to a head portion of a user.
  • the chin strap mechanism 420 may be selected from any of the chin strap mechanisms known in the art.
  • the chin strap mechanism 420 may include a nape strap for securing the bolt-free helmet 400 to a nape portion of the user. Further, as shown in FIG.
  • inner portion of the shell 408 of the bolt-free helmet 400 may be disposed with a plurality of cushion pads 422 (shown in FIG. 18).
  • the plurality of cushion pads 422 is configured to provide cushioning effect to the head portion of the user.
  • the plurality of cushion pads 422 may be composed of various materials known in the art for providing the cushioning effect, such as but not limited to cotton.
  • the bolt-free helmets 100, 200 and 300 may also include a plurality of cushion pads similar to the cushion pads 422, disposed on inner portion of the shell thereof.
  • the exemplary embodiments described herein describe the bolt-free helmet 100, 200, 300, and 400 particularly for ballistic protection helmets, the present invention is not intended to be exhaustive or to limit to a ballistic protection helmet. The principles of the present invention may be equally applied to helmets utilized in various fields such as recreational activities, sports, construction, mining and the like.
  • the bolt-free helmet as described herein, is capable of being protecting a head portion of a user from injuries. Further, the bolt-free helmet is devoid of any holes on a shell portion thereof for increasing the strength of the bolt-free helmet. Furthermore, the bolt-free helmet is simple in construction and easy to use. Still further, the bolt-free helmet is capable of being” securely placed on a head portion of a user. Furthermore, the bolt-free helmet is capable of providing a cushioning effect to a head portion of a user.

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  • Helmets And Other Head Coverings (AREA)

Abstract

Disclosed is a bolt-free helmet. In one embodiment of the present invention, the bolt-free helmet includes a plurality of helmet pre-forms and an elongated band. At least one outer pre-form of the plurality of pre-forms includes a plurality of slots. The elongated band configured to be received in the plurality of slots of the at least one outer pre-form of the plurality of pre-forms to form a framework for securing a chin strap mechanism thereto. Further, the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user. In another embodiment of the present invention, the bolt-free helmet includes a plurality of helmet pre-forms, a plurality of strips and an elongated band.

Description

BOLT-FREE HELMET
FIELD OF THE INVENTION
[0001] The present invention relates generally to helmets, and, more particularly, to a bolt-free helmet capable of being used as a ballistic protection helmet.
BACKGROUND OF THE INVENTION
[0002] Helmet is a protective gear worn on a head portion of a user to protect it from injuries. The helmet includes a securement system, such as a chin strap, a nape strap and the like, for removably securing the helmet to a head portion of a user. Helmets may be used for various purposes such as recreational activities, sports, construction, mining, police and military applications. The Police, military and other law enforcement agencies personnel wear the helmet to protect their head from hand held firearms and high velocity fragments. It is important that the helmet needs to be securely mounted on the wearer's head. Otherwise, the helmet may shift its position or even come off in the, case of sudden jerk such as windblast and the like.
[0003] Generally, the securement system is secured to the helmet by means of screws, bolts and like. The screws and bolts are passed through plurality of holes configured in the shell portion of the helmet. The plurality of holes configured in the shell portion of helmet reduces the degree of protection provided by the helmet. More specifically, any hole in the shell of helmet reduces strength of the helmet near the hole. Further, the overall strength of helmet gets reduced on account of the plurality of holes.
[0004] Accordingly, based on the foregoing, there exists a need for a bolt-free helmet which is capable of being protecting a head portion of a user from injuries. Further, there is a need for a bolt-free helmet, which is devoid of any hole on a shell portion thereof! Still^ ' further, there is a need for a bolt-free helmet, which is capable of being securely placed on a head portion of a user.
SUMMARY OF THE INVENTION
[0005] In view of the foregoing disadvantages inherent in the prior art, the general purpose of the present invention is to provide a bolt-free helmet configured to include all the advantages of the prior art, and to overcome the drawbacks inherent therein.
[0006] Accordingly, an object of the present invention is to provide a bolt-free helmet, which is capable of protecting a head portion of a user from injuries.
[0007] Another object of the present invention is to provide a bolt-free helmet, which is devoid of any holes on a shell portion thereof.
[0008] Yet another object of the present invention is to provide a bolt-free helmet, which is capable of being securely placed on a head portion of a user.
[0009] Accordingly, the present invention provides a bolt-free helmet. The bolt- free helmet includes a plurality of helmet pre-forms and an elongated band. At least one outer pre-form of the plurality of pre-forms includes a plurality of slots. The elongated band configured to be received in the plurality of slots of the at least one outer pre-form of the plurality of pre-forms to form a framework for securing a chin strap mechanism thereto. Further, the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user. [0010] In another aspect of the present invention, the bolt-free helmet includes a plurality of helmet pre-forms, a plurality of strips and an elongated band. At least one outer preform of the plurality of pre-forms includes a plurality of slots. Each of the plurality of strips is configured to be received in one of the plurality of slots to form a loop therein. The elongated band is configured to be received in plurality of loops formed by the each of the plurality of strips. The elongated band is configured to form a framework for securing a chin strap mechanism thereto. Further, the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
[001 1] In yet another aspect of the present invention, the bolt-free helmet includes a plurality of helmet pre-forms, a plurality of strips and an elongated band. The plurality of strips is configured to form a plurality of loops. The plurality of loops is configured to be secured to at least one outer pre-form of the plurality of pre-forms by means of an adhesive. The elongated band is configured to be received in the plurality loops to form a framework for securing a chin strap mechanism thereto. Further, the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
[0012] Further, in yet another embodiment of the present invention, the bolt-free helmet includes a plurality of helmet pre-forms, a plurality of fabric pieces and a plurality elongated strips. Each of the plurality of fabric pieces includes a first face and a second face opposite to the first face. Each of the plurality of elongated strips includes a first end portion and a second end portion. The first end portion of the each of the plurality elongated strip secured to an attachment means and the second end portion of the each of the plurality of elongated strips secured to the second face of the each of the plurality of fabric pieces. The each of the plurality of fabric pieces along with the second end portion of the each of the plurality of elongated strips is secured to at least one outer helmet pre-form of the plurality of helmet pre-forms by means of an adhesive. The attaching means of the each of the plurality of elongated strips is configured to be secured to a chin strap mechanism; the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user. [0013] These together with other aspects of the present invention, along with the various features of novelty that characterize the present invention, are pointed out with particularity in the claims annexed hereto and form a part of this present invention. For a better understanding of the present invention, its operating advantages, and the specific objects attained by its uses, reference should be made to the accompanying drawings and descriptive matter in which there are illustrated exemplary embodiments of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The advantages and features of the present invention will become better understood with reference to the following detailed description and claims taken in conjunction with the accompanying drawings, wherein like elements are identified with like symbols, and in which:
[0015] FIG. 1 illustrates a perspective view of a bolt-free helmet, according to an embodiment of the present invention;
[0016] FIG. 2 illustrates a top view of an outer pre-form of the plurality of preforms including a plurality of slots, according to an embodiment of the present invention;
[0017] FIG. 3 illustrates a top view of an outer pre-form of the plurality of preforms including a plurality of slots, according to an another embodiment of the present invention;
[0018] FIG. 4 illustrates a perspective view of a shell of the bolt-free helmet including a framework formed by an elongated band, according to an embodiment of the present invention; [0019] FIG. 5 illustrates a perspective view of a bolt-free helmet, acc6rαing'R) "o another embodiment of the present invention;
[0020] FIG. 6 illustrates a top view of an outer pre-form of the plurality of preforms including a plurality of slots, according to another embodiment of the present invention;
[0021] FIG. 7 illustrates a top view of an outer pre-form of the plurality of preforms including a plurality of slots, according to an another embodiment of the present invention;
[0022] _ FIG. 8 illustrates a front view of one strip of the plurality of strips configured^to form a loop, according to another embodiment of the present invention;
[0023] FIG. 9 illustrates a perspective view illustrating the one strip of the plurality of strips received in one of the plurality of slots of the outer pre-form of the plurality of pre-forms to form a loop therein , according to another embodiment of the present invention;
[0024] FIG. 10 illustrates a perspective view of the plurality of pre-forms including the outer pre-form along with a plurality of loops configured to form a shell of the bolt-free helmet of the FIG. 5, according to another embodiment of the present invention;
[0025] FIG. 1 1 illustrates a perspective view of a shell of the bolt-free helmet of the FIG. 5 including a framework formed by an elongated band, according to another embodiment of the present invention;
[0026] FIG. 12 illustrates a perspective view of a bolt-free helmet, according to yet another embodiment of the present invention;
[0027] FIG. 13 illustrates a top view of an outer pre-form of the plurality of preforms, according to yet another embodiment of the present invention; [0028] FIG. 14 illustrates a front view of one strip of the plurality of strips configured to form a loop, according to yet another embodiment of the present invention;
[0029] FIG. 15 illustrates a perspective view of a bolt-free helmet, according to yet another embodiment of the present invention;
[0030] FIG. 16 illustrates a top view of an outer pre-form of the plurality of preforms, according to yet another embodiment of the present invention;
[0031] FIG. 17 illustrates a perspective view of a shell of the bolt-free helmet illustrating a plurality of fabric pieces and a plurality of elongated strips, according to yet another embodiment of the present invention;
[0032] FIG. 18 illustrates a perspective view of the bolt-free helmet illustrating a plurality of cushion pads, according to yet another embodiment of the present invention;
[0033] Like reference numerals refer to like parts throughout the description of . several views of the drawings.
DETAILED DESCRIPTION OF THE INVENTION
[0034] The exemplary embodiments described herein detail for illustrative purposes are subject to many variations in structure and design. It should be emphasized, however, that the present invention is not limited to a particular bolt-free helmet, as" shown and described. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but these are intended to cover the application or implementation without departing from the spirit or scope of the claims of the present invention. [0035] The terms "first," "second," and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, and the terms "a" and "an" herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
[0036] The present invention provides a bolt-free helmet for protecting a head portion of a user from injuries. Helmets including the bolt-free helmet of the present invention include plurality of helmet pre-forms to form a shell portion of the helmets. The number of the plurality of helmet pre-forms decides the degree of protection offered by a helmet. The number of the plurality of helmet pre-forms used depends on a field where the helmet is used. For example, the helmet used in Police, military and other law enforcement agencies operations requires more number of the plurality of the helmet pre-forms then for the helmet used while driving a vehicle.
[0037] Referring to FIG.l to FIG. 4, a bolt-free helmet 100 is shown. The bolt- free helmet 100 includes a plurality of helmet pre-forms, such as an at least one outer pre-form 102 (shown in FIG. 2 and FIG.3) and an elongated band 104 (shown in FIG. 4).
[0038] The plurality of helmet pre-forms, such as the at least one outer pre-form
102, is configured to form the bolt-free helmet 100. Although, each of the plurality of helmet pre-forms may be configured to have a variety of shapes, in one embodiment of the present invention as shown in FIG. 2 and 3, each of the plurality of pre-forms is configured to have a shape of a flower. Further, in one embodiment of the present invention, each of the plurality of pre-forms of the flower shape includes a plurality of petals, such as a petal 106a, a petal 106b, a petal 106c, a petal 106d, a petal 106e and a petal 106f (hereinafter collectively referred to as "plurality of petals 106"). The plurality of helmet pre-forms may be composed from various materials known for making helmets. In one embodiment of the present invention, the plurality of helmet pre-forms may be composed of a composite fabric material. In another embodiment of the present invention, the plurality of helmet pre-forms may be composed of an Aramid or a para-Aramid fabric. In another embodiment of the present invention, the plurality of helmet preforms may be composed of a polyethylene fabric. [0039] The at least one outer pre-form 102 of the plurality of helmet pre-forms includes a plurality of slots such as, a slot 108a, a slot 108b, and a slot 108c (hereinafter collectively referred to as "plurality of slots 108")- More specifically, as shown in FIG. 2 and FIG. 3, each alternate petal of the plurality of petals 106 includes the plurality of slots 108 such as the slot 108a, the slot 108b, and the slot 108c. In one embodiment of the present invention, each petal of the plurality of petals 106 includes at least one slot. Each slot of the plurality of slots 108 includes two parallel cuts, such as a cut 1 10a and a cut 1 10b (hereinafter referred to as "two parallel cuts 110"), prepared on the at least one outer pre-form 102.
[0040] As shown in FIG. 2, in one embodiment of the present invention, the plurality of slots 108 is disposed perpendicular to a radius 112 of the at least one outer pre-form 102. In one embodiment of the present invention, the two parallel cuts 110 of the plurality of slots 108 disposed perpendicular to the radius 112 are spaced at approximately 20-30 mm away from each other. Further, in one embodiment of the present invention, the length of each cut of the two parallel cuts 110 is about 15 to 25 mm. As shown in FIG. 3, in another embodiment of the present invention, the plurality of slots 108 is disposed parallel to the radius 1 12 of the at least one outer pre-form 102. In one embodiment of the present invention, the two parallel cuts 1 10 of the plurality of slots 108 disposed parallel to the radius 112 are spaced at about 20 to 30 mm away from each other. Further, in one embodiment of the present invention, the length of each cut of the two parallel cuts 110 is about 15 to 25 mm.
[0041] Further, the plurality of helmet pre-forms including the at least one outer pre-form 102 is then molded to form a shell 1 14 (shown in FIG. 4) of the bolt- free helmet 100 by conventional helmet shell molding process known in the art. So as to preclude sticking of the plurality of slots 108 to the shell 114 of the bolt-free helmet 100, non stick paper or other suitable material is inserted between the plurality of slots 108 and the plurality of pre-forms before applying heat and pressure required for molding. The plurality of slots 108 is configured to receive the elongated band 104 therein. [0042] As shown in FIG. 4, the elongated band 104 is configured to be received in the plurality of slots of the at least one outer pre-form 102 of the plurality of helmet pre-forms to form a framework for securing a chin strap mechanism 116 thereto. The two end portions of the elongated band 104 may be securely disposed over each other in the slot 108a for forming a sturdy structure of the framework. The chin strap mechanism 116 may be secured to the framework formed by the elongated band 104 by various means and methods known in the art. Further, the chin strap mechanism 116 is configured to removably secure the bo It- free helmet to a head portion of a user. The chin strap mechanism 116 may be selected from any of the chin strap mechanism known in the art. In one embodiment of the present invention, the chin strap mechanism 1 16 may include a nape strap for securing the bolt- free helmet 100 to a nape portion of the user.
[0043] Now referring to FIG. 5 to FIG. 11, in another embodiment of the present invention, disclosed is a bolt-free helmet 200. The bolt-free helmet 200 includes a plurality of helmet pre-forms, such as at least one outer helmet pre-form 202 (shown in FIG. 6 and FIG. 7); a plurality of strips, such as a strip 204a (shown in FIG. 8); and an elongated band 206 (shown in FIG. 11).
[0044] The plurality of helmet pre-forms, such as the at least one outer pre-form
202, is configured to form the bolt-free helmet 200. Although, each of the plurality of helmet pre-forms may be configured to have a variety of shapes, in one embodiment of the present invention as shown in FIG. 6 and 7, each of the plurality of pre-forms is configured to have a shape of a flower. Further, in one embodiment of the present invention, each of the plurality of pre-forms of the flower shape includes a plurality of petals, such as a petal 208a, a petal 208b, a petal 208c, a petal 208d, a petal 208e and a petal 208f (hereinafter collectively referred to as "plurality of petals 208"). The plurality of helmet pre-forms may be composed from various materials known for making ballistic helmets. In one embodiment of the present invention, the plurality of helmet pre-forms is composed of a composite fabric material. In another embodiment of the present invention, the plurality of helmet pre-forms may be composed of an Aramid or a para-Aramid fabric. In another embodiment of the present invention, the plurality of helmet preforms may be composed of a polyethylene fabric. [0045] The at least one outer pre-form 202 of the plurality of helmet pre-forms includes a plurality of slots such as, a slot 210a, a slot 210b, and a slot 210c (hereinafter collectively referred to as "plurality of slots 210"). More specifically, as shown in FIG. 6 and FIG. 7, each alternate petal of the plurality of petals 208 includes the plurality of slots 210 such as the slot 210a, the slot 210b, and the slot 210c. In one embodiment of the present invention, each petal of the plurality of petals 208 includes at least one slot. Each slot of the plurality of slots 210 includes two parallel cuts, such as a cut 212a and a cut 212b (hereinafter referred to as "two parallel cuts 212"), prepared on the at least one outer pre-form 202.
[0046] As shown in FIG. 6, in one embodiment of the present invention, the plurality of slots 210 is disposed perpendicular to a radius 214 of the at least one outer pre-form 202. In one embodiment of the present invention, the two parallel cuts 212 of the plurality of slots 210 disposed perpendicular to the radius 214 are spaced at approximately 20-30 mm away from each other. Further, in one embodiment of the present invention, the length of each cut of the two parallel cuts 212 is about 15 to 25 mm. As shown in FIG. 7, in another embodiment of the present invention, the plurality of slots 210 is disposed parallel to the radius 214 of the at least one outer pre-form 202. In one embodiment of the present invention, the two parallel cuts 212 of the plurality of slots 210 disposed parallel to the radius 214 are spaced at about 20 to 30 mm away from each other. Further, in one embodiment of the present invention, the length of each cut of the two parallel cuts 212 is about 15 to 25 mm. Each of the plurality of slots 210 is configured to receive one of the plurality of strips, such as the strip 204a (shown in FIG. 8), therein.
[0047] In one embodiment of the present invention, as shown in FIG.8, each of the plurality of strips, such as the strip 204a, is about 115 to 125 mm in length and 20 to 40 mm in width. Further, in one embodiment of the present invention, the strip 204a includes two dashed lines, such as a dashed line 216a and a dashed line 216b, spaced apart from longitudinal edges, such as a longitudinal edge 218a and longitudinal edge 218b, of the strip 204a. Still further, in one embodiment of the present invention, the dashed line 216a and the dashed line 216b are spaced apart at about 5 to 15 mm respectively from the longitudinal edge 218a and the longitudinal edge 218b of the strip 204a. Moreover, in one embodiment of the present invention, the strip 204a is folded on both sides along the dashed line 216a and the dashed line 216b to facilitate the strip 204a be used as a loop 220 (shown in FIGS 9-11). In one embodiment of the present invention, the plurality of strips may be composed of a composite fabric material. In another embodiment of the present invention, the plurality of strips may be composed of an Aramid or a para-Aramid fabric.
[0048] Further, as shown in FIG.9, the plurality of strips, such as the strip 204a is configured to be received in one of the plurality of slots 210, such as the slot 210a, to form the loop 220 therein. In one embodiment of the present invention, the strip is pulled on both the ends so that it falls flat on the pre-form. Further, the plurality of helmet pre-forms including the at least one outer pre-form 202 is then molded to form a shell 222 (shown in FIG. 5 and FIG. 11) of the bolt-free helmet 200 by conventional helmet shell molding process known in the art. For precluding sticking of plurality of loops, formed from the each of the plurality of strips, such as the strip 204a, to the shell 222 of the bolt-free helmet 200, non stick paper or other suitable material is inserted between the plurality of loops and the plurality of pre-forms before applying heat and pressure required for molding. The plurality of loops is configured to receive the elongated band 206 therein.
[0049] As shown in FIG. 11 , the elongated band 206 is configured to be received in the plurality of loops to form a framework for securing a chin strap mechanism 224 (shown in FIG. 5) thereto. The two end portions of the elongated band 206 may be securely disposed over each other in the loop 220 for forming a sturdy structure of the framework. The chin strap mechanism 224 may be secured to the framework formed by the elongated band 206 by various means and methods known in the art. Further, the chin strap mechanism 224 is configured to removably secure the bolt-free helmet 200 to a head portion of a user. The chin strap mechanism 224 may be selected from any of the chin strap mechanism known in the art. In one embodiment of the present invention, the chin strap mechanism 224 may include a nape strap for securing the bolt-free helmet 200 to a nape portion of the user. In one embodiment of the present invention, the elongated band 206 is composed of a plastic material. But the elongated band 206 may also be composed of any other material such as lather, a composite fabric and the like. [0050] Now referring to FIG. 12 to FIG. 14, in yet another embodiment of the present invention, disclosed is a bolt-free helmet 300. The bolt-free helmet 300 includes a plurality of helmet pre-forms, such as an at least one outer helmet pre-form 302 (shown in FIG.13); a plurality of strips, such as a strip 304a (shown in FIG. 14); and an elongated band (not shown).
[0051] The plurality of helmet pre-forms, such as the at least one outer pre-form
302, is configured to form the bolt-free helmet 300. Although, each of the plurality of helmet pre-forms may be configured to have a variety of shapes, in one embodiment of the present invention as shown in FIG. 13, each of the plurality of pre-forms is configured to have a shape of a flower. Further, in one embodiment of the present invention, each of the plurality of pre-forms of the flower shape includes a plurality of petals, such as a petal 306a, a petal 306b, a petal 306c, a petal 306d, a petal 306e and a petal 306f (hereinafter collectively referred to as "plurality of petals 306"). The plurality of helmet pre-forms may be composed from various materials known for making ballistic helmets. In one embodiment of the present invention, the plurality of helmet pre-forms is composed of a composite fabric material. In another embodiment of the present invention, the plurality of helmet pre-forms may be composed of an Aramid or a para-Aramid fabric. In another embodiment of the present invention, the plurality of helmet pre-forms may be composed of a polyethylene fabric.
[0052] Further, as shown in FIG. 14, each of the plurality of strips, such as the strip
304a, is structurally similar to the strip 204a (shown in the FIG. 8). Accordingly, for brevity of the present document, structure of the strip 304a is not explained in detail. Further, each of the plurality of strips, such as the strip 304a is configured to form a loop similar to the loop 220 illustrated in Figure 9 and Figure 10. The plurality of loops formed from each of the plurality of strips is configured to be secured to the at least one outer pre-form 302 of the plurality of preforms by means of an adhesive. In one embodiment of the present invention, the adhesive may be any engineering and structural epoxy, acrylic, and polyurethane adhesives. In another embodiment of the present invention, the adhesive may be the adhesive developed by "Resinova Chemie Ltd." that is sold under the trademark "PG 100". In one embodiment of the present invention, the loop is incorporated in a rubberized base (not shown). The rubberized base along with the loop is configured to be secured to the at least one outer pre-form 302 of the plurality of pre-forms by means of the adhesive. Further, the rubberized base is configured to provide cushion to the head of the wearer. Further, the plurality of helmet pre-forms including the at least one outer pre-form 302 is then molded to form a shell 308 of the bolt-free helmet 300 by conventional helmet shell molding process known in the art. The plurality of loops is configured to receive the elongated band therein.
[0053] The elongated band is similar in structure and configuration to the elongated band 204a. Further, the elongated band is configured to be received in the plurality of loops, to form a framework for securing a chin strap mechanism 310 thereto. The chin strap mechanism 310 may be secured to the framework formed by the elongated band by various means and methods known in the art. Further, the chin strap mechanism 310 (shown in FIG. 12) is configured to removably secure the bolt-free helmet to a head portion of a user. The chin strap mechanism 310 may be selected from any of the chin strap mechanism known in the art. In one embodiment of the present invention, the chin strap mechanism 310 may include a nape strap for securing the bolt-free helmet 300 to a nape portion of the user. In one embodiment of the present invention, the elongated band is composed of a plastic material. But the elongated band may also be composed of any other material such as lather, a composite fabric and the like.
[0054] Now referring to FIG. 15 to FIG. 18, in yet another embodiment of the present invention, disclosed is a bolt-free helmet 400. The bolt-free helmet 400 includes a plurality of helmet pre-forms, such as an at least one outer helmet pre-form 402 (shown in FIG.16); a plurality of fabric pieces (shown in FIG. 17), such as a fabric piece 404a, a fabric piece 404b and a fabric piece 404c (hereinafter collectively referred to as "plurality of fabric pieces 404") ; and a plurality elongated strips (shown in FIG. 17), such as an elongated strip 406a, an elongated strip 406b, an elongated strip 406c (hereinafter collectively referred to as "plurality of elongated strips 406").
[0055] The plurality of helmet pre-forms including the at least one outer helmet pre-form 402, is configured to be molded to form a shell 408 (shown in FIG. 15) of the bolt-free helmet 400 by conventional helmet shell molding process known in the art. Although, each ot the plurality of helmet pre-forms may be configured to have a variety of shapes, in one embodiment of the present invention as shown in FIG. 16, each of the plurality of pre-forms is configured to have a shape of a flower. Further, in one embodiment of the present invention, each of the plurality of pre-forms of the flower shape includes a plurality of petals, such as a petal 410a, a petal 410b, a petal 410c, a petal 41Od, a petal 41Oe and a petal 41Of (hereinafter collectively referred to as "plurality of petals 410"). The plurality of helmet pre-forms may be composed from various materials known for making ballistic helmets. In one embodiment of the present invention, the plurality of helmet pre-forms is composed of a composite fabric material. In another embodiment of the present invention, the plurality of helmet pre-forms may be composed of an Aramid or a para-Aramid fabric. In another embodiment of the present invention, the plurality of helmet pre-forms may be composed of a polyethylene fabric.
[0056] As shown in FIG. 17, the plurality of fabric pieces 404 is configured to be secured to the at least one outer helmet pre-form 402 of the plurality of helmet pre-forms. Each of the plurality of fabric pieces 404 includes a first face 412 and a second face (not shown) opposite to the first face 412. The second face is configured be secured to the at least one outer helmet pre-form 402 of the plurality of helmet pre-forms. The plurality of fabric pieces 404 may be composed from various fabric materials. In one embodiment of the present invention, the each of the plurality of fabric pieces 404 may be composed of an aramid fabric.
[0057] Further, each of the plurality of elongated strips 406 includes a first end portion 414 and a second end portion 416. The first end portion 414 of the each of the plurality elongated strips 406 is secured to an attachment means 418. The attachment means 418 may be at least one of a D-ring, a hook, a buckle, and a loop. The attachment means 418 may be composed of various non-corrosive materials such as but limited to a brass material. Similarly, the plurality of elongated strips 406 may be composed of various materials such as but not limited to a nylon material. Further, in one embodiment of the present invention, the attachment means 418 secured to the first end portion 414 may be different for each of the plurality of elongated strips 406. For example, the first end portion 414 of the elongated strip 406a includes a D-ring; the first end portion 414 of the elongated strip 406b may include a buckle; and the first end portion 414 of the elongated strip 406c may include a loop.
[0058] The second end portion 416 of the each of the plurality of elongated strips
406 is secured to the second face of the each of the plurality of fabric pieces 404. In one embodiment of the present invention, the second end portion 416 of the each of the plurality of elongated strips 406 may secured to the first face 412 of the each of the plurality of fabric pieces 404. Further, in one embodiment of the present invention, the each of the plurality of elongated strips 406 is stitched to the second face of the each of the plurality of fabric pieces 404. In another embodiment of the present invention, the each of the plurality of elongated strips may be secured to the second face of the each of the plurality of fabric pieces 404 by means of an adhesive.
[0059] Further, the each of the plurality of fabric pieces 404 along with the second end portion 416 of the each of the plurality of elongated strips 406 is secured to at least one outer pre-form 402 of the plurality of pre-forms by means of an adhesive. In one embodiment of the present invention, the adhesive may be any engineering and structural epoxy, acrylic, and polyurethane adhesives. In another embodiment of the present invention, the adhesive may be the adhesive developed by "Resinova Chemie Ltd." that is sold under the trademark "PG 100".
[0060] Further, a chin strap mechanism 420 (shown in FIG. 15 and FIG. 18) is secured to the attaching means 418 of the each of the plurality of elongated strips 406. The chin strap mechanism 420 is secured to the attaching means 418 of the each of the plurality of elongated strips by various means and methods known in the art. The chin strap mechanism 420 is configured to removably secure the bolt-free helmet to a head portion of a user. The chin strap mechanism 420 may be selected from any of the chin strap mechanisms known in the art. In one embodiment of the present invention, the chin strap mechanism 420 may include a nape strap for securing the bolt-free helmet 400 to a nape portion of the user. Further, as shown in FIG. 18, inner portion of the shell 408 of the bolt-free helmet 400 may be disposed with a plurality of cushion pads 422 (shown in FIG. 18). The plurality of cushion pads 422 is configured to provide cushioning effect to the head portion of the user. The plurality of cushion pads 422 may be composed of various materials known in the art for providing the cushioning effect, such as but not limited to cotton.
[0061] Further, similar to the bolt-free helmet 400, the bolt-free helmets 100, 200 and 300 may also include a plurality of cushion pads similar to the cushion pads 422, disposed on inner portion of the shell thereof. Although the exemplary embodiments described herein describe the bolt-free helmet 100, 200, 300, and 400 particularly for ballistic protection helmets, the present invention is not intended to be exhaustive or to limit to a ballistic protection helmet. The principles of the present invention may be equally applied to helmets utilized in various fields such as recreational activities, sports, construction, mining and the like.
[0062] Various embodiments of the present invention offer following advantages.
The bolt-free helmet, as described herein, is capable of being protecting a head portion of a user from injuries. Further, the bolt-free helmet is devoid of any holes on a shell portion thereof for increasing the strength of the bolt-free helmet. Furthermore, the bolt-free helmet is simple in construction and easy to use. Still further, the bolt-free helmet is capable of being" securely placed on a head portion of a user. Furthermore, the bolt-free helmet is capable of providing a cushioning effect to a head portion of a user.
[0063] The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, and to thereby enable others skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but such omissions and substitutions are intended to cover the application or implementation without departing from the spirit or scope of the claims of the present invention.

Claims

CLAIMSWhat is claimed is:
1. A bolt-free helmet, the bolt-free helmet comprising:
a plurality of helmet pre-forms, at least one outer pre-form of the plurality of pre-forms comprising a plurality of slots; and
an elongated band configured to be received in the plurality of slots of the at least one outer pre-form of the plurality of pre-forms to form a framework for securing a chin strap mechanism thereto,
wherein the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
2. The bolt-free helmet of claim 1, wherein the plurality of slots is disposed perpendicular to a radius of the plurality of helmet pre-forms.
3. The bolt- free helmet of claim 1, wherein the plurality of slots is disposed parallel to a radius of the plurality of helmet pre-forms.
4. The bolt-free helmet of claim 1, wherein each of the plurality of pre-forms is configured to have a shape of a flower.
5. The bolt-free helmet of claim 4, wherein each of the plurality of pre-forms of the flower shape comprises a plurality of petals.
6. The bolt-free helmet of claim 5, wherein each alternate petal of the plurality of petals comprises at least one slot of the plurality of slots.
7. A bolt-free helmet, the bolt-free helmet comprising:
a plurality of helmet pre-forms, at least one outer pre-form of the plurality of pre-forms comprising a plurality of slots;
a plurality of strips, wherein each of the plurality of strips is configured to be received in one of the plurality of slots to form a loop therein; and
an elongated band configured to be received in plurality of loops formed by each of the plurality of strips, the elongated band is configured to form a framework for securing a chin strap mechanism thereto,
wherein the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
8. The bolt-free helmet of claim 7, wherein the plurality of slots is disposed perpendicular to a radius of the plurality of helmet pre-forms.
9. The bolt-free helmet of claim 7, wherein the plurality of slots is disposed parallel to a radius of the plurality of helmet pre-forms.
10. The bolt- free helmet of claim 7, wherein each of the plurality of pre-forms is configured to have a shape of a flower.
11. The bolt-free helmet of claim 10, wherein each of the plurality of pre-forms comprises a plurality of petals.
12. The bolt-free helmet of claim 11, wherein each alternate petal of the plurality of petals comprises at least one slot of the plurality of slots.
13. A bolt-free helmet, the bolt- free helmet comprising:
a plurality of helmet pre-forms;
a plurality of strips, the plurality of strips configured to form a plurality of loops, wherein the plurality of loops is configured to be secured to at least one outer pre-form of the plurality of pre-forms by means of an adhesive; and
an elongated band configured to be received in the plurality of loops to form a framework for securing a chin strap mechanism thereto,
wherein the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
14. The bolt-free helmet of claim 13, wherein each of the plurality of pre-forms is configured to have a shape of a flower.
15. The bolt-free helmet of claim 14, wherein each of the plurality of pre-forms of the flower shape comprises a plurality of petals.
16. The bolt-free helmet of claim 13, wherein the loop is secured to a rubberized base.
17. A bolt-free helmet, the bolt-free helmet comprising:
a plurality of helmet pre-forms;
a plurality of fabric pieces, each of the plurality of fabric pieces comprising a first face and a second face opposite to the first face, and
a plurality elongated strips, each of the plurality of elongated strips comprising a first end portion and a second end portion, the first end portion of the each of the plurality elongated strip secured to an attachment means and the second end portion of the each of the plurality of elongated strips secured to the second face of the each of the plurality of fabric pieces,
wherein the each of the plurality of fabric pieces along with the second end portion of the each of the plurality of elongated strips is secured to at least one outer helmet pre-form of the plurality of helmet pre-forms by means of an adhesive; and
wherein the attaching means of the each of the plurality of elongated strips is configured to be secured to a chin strap mechanism, the chin strap mechanism is configured to removably secure the bolt-free helmet to a head portion of a user.
18. The bolt-free helmet of claim 17, wherein the attaching means is at least one of a D-ring, a hook, a buckle and a loop.
19. The bolt-free helmet of claim 18, wherein the attaching means is composed of a non-corrosive material.
20. The bolt-free helmet of claim 17, wherein the each of the plurality elongated strips is composed of a nylon material.
21. The bolt-free helmet of claim 17, wherein the each of the plurality of fabric pieces is composed of an aramid fabric.
PCT/IN2008/000638 2007-10-08 2008-10-06 Bolt free helmet WO2009047795A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2094/DEL/2007 2007-10-08
IN2094DE2007 2007-10-08

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WO2009047795A3 WO2009047795A3 (en) 2009-12-30

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EP2629044A1 (en) 2012-02-20 2013-08-21 Teijin Aramid B.V. Ballistic resistant article, semi-finished product for and method of making a shell for a ballistic resistant article

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EP0512193A1 (en) * 1991-05-09 1992-11-11 Arai Helmet Limited Helmet
US5638544A (en) * 1996-05-23 1997-06-17 Ranger Joe's Columbus Army Surplus Co. Military helmet with camouflage band retaining system and method for retaining a camouflage band on a military helmet
WO1997037553A1 (en) * 1996-04-04 1997-10-16 Rbr Armour Ltd. Helmets
US5996126A (en) * 1998-07-22 1999-12-07 Cairns & Brother Inc. Crown pad and head-protective helmet
US6374423B1 (en) * 2001-05-18 2002-04-23 Kris A. Anderson Sports helmet with full flexible brim
US20030070200A1 (en) * 2001-09-14 2003-04-17 Crye Caleb Clark Advanced combat helmet system

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EP0512193A1 (en) * 1991-05-09 1992-11-11 Arai Helmet Limited Helmet
WO1997037553A1 (en) * 1996-04-04 1997-10-16 Rbr Armour Ltd. Helmets
US5638544A (en) * 1996-05-23 1997-06-17 Ranger Joe's Columbus Army Surplus Co. Military helmet with camouflage band retaining system and method for retaining a camouflage band on a military helmet
US5996126A (en) * 1998-07-22 1999-12-07 Cairns & Brother Inc. Crown pad and head-protective helmet
US6374423B1 (en) * 2001-05-18 2002-04-23 Kris A. Anderson Sports helmet with full flexible brim
US20030070200A1 (en) * 2001-09-14 2003-04-17 Crye Caleb Clark Advanced combat helmet system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2629044A1 (en) 2012-02-20 2013-08-21 Teijin Aramid B.V. Ballistic resistant article, semi-finished product for and method of making a shell for a ballistic resistant article
WO2013124233A1 (en) 2012-02-20 2013-08-29 Teijin Aramid B.V. Ballistic resistant article, semi-finished product for and method of making a shell for a ballistic resistant article
US10066904B2 (en) 2012-02-20 2018-09-04 Teijin Aramid B.V. Ballistic resistant article, semi-finished product for and method of making a shell for a ballistic resistant article

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