Abstract: A protective helmet includes: a rigid shell including a generally domed-shaped section, a force attenuating liner within the dome-shaped section shell and operatively connected to the rigid shell; and a visor mount in operative connection with the force attenuating liner, the visor mount be adapted to have a visor mounted thereto.

Abstract: There is disclosed a protective head gear comprising a helmet having a brim positioned above the eyes of the wearer, a face protector covering at least a portion of the face of the wearer, and an adapter comprising an elongate cross member for securing the face protector to the helmet along the brim. There is also disclosed an adapter for attaching a face protector having a pair of strap receiving slots molded therein to a helmet, comprising a cross member secured to the helmet, and a pair of support arms for insertion into the strap receiving slots. Additionally, there is disclosed face protective gear for use with a helmet having a brim positioned above the eyes of the wearer, comprising a cross member comprising a lip molded along an upper edge, and a pair of goggles depending from the cross member When the cross member is secured to the helmet, the lip overlaps the brim.

Abstract: A face shield assembly that includes a protective element including an edge and a frame including a top portion, a bottom portion and a side portion, the frame further including: a) an opening sized to fit the protective element, the opening defined by an upper inner edge, a lower inner edge, and side inner edges of the frame; b) a lip spaced from the upper, lower and side inner edges so as to form a channel constructed and arrange to receive a portion of the edge of the protective element.

Abstract: A gradient tinted shield may include one or more areas of gradient opacity, varying vertically from a user's eyeline. In one implementation, two areas of gradient opacity are located on the gradient tinted shield, one above the user's eyeline and one below the user's eyeline. Further, an area of constant opacity may be located at the user's eyeline.

Abstract: An apparatus for protective body armor to protect the head, neck, and spine from impaction, lateral extension, hyperflexion, hyperextension, while allowing for normal physiologic movement and range of head and neck motion is disclosed. In at least one embodiment a protective body armor includes: a shell adapted to couple to at least one upper body plate, to cover the head and neck, to allow normal physiologic movement and range of the head and the neck within the shell, and to prevent movement beyond the normal movement and range, wherein the shell does not move relative to the at least one upper body plate once rigidly coupled and the farthest distance the head can move upon an impact to the user is within a boundary of the shell; and a skull pad for wear by the user directly upon the head within the shell and for coverage of the skull area.

Abstract: A helmet having a shell configured to fit about a head of a wearer of the helmet. The shell includes a top portion that defines a front edge and a bottom portion adjoining the top portion. The bottom portion defines a first side edge integral with a first end of the front edge and a second side edge integral with a second end of the front edge. The front edge, first side edge, and second side edge define a segment of a circumference of the shell. The helmet includes a faceguard comprising a faceguard assembly formed in a substantially closed loop. A top portion of the faceguard assembly overlies the top portion of the shell and substantially overlies and coincides with an entire shape of the front edge. At least a segment of a top portion of the faceguard assembly makes direct contact with the top portion of the shell.

Abstract: The helmet visor with wiper apparatus provides a visor that can wipe inclement weather products off of the visor center section with a pendulum action wiper blade that is replaceable. The visor removably fits most existing helmets. The center section of the visor provides for less curvature than do the left section and right section, thereby providing for most efficient cleaning. The center section outward flares provide best all around visibility from the center section. Also, the wiper mechanism removably fastens to the visor, providing for inexpensive wiper mechanism replacement without having to replace the entire apparatus and further providing for the various components of the wiper mechanism to be serviced and replaced easily, without great expense. The flexible blade is replaceable.

Abstract: A protective jaw pad for equipment having a shell includes a first resilient shock absorbing member having a sheet portion with a plurality of hollow protrusions, tapering side walls of the protrusions being compressible for absorbing shocks applied to the shell. The pad includes a second resilient shock absorbing member that is either a monolithic block of foam or is made up of a second sheet portion with a plurality of hollow protrusions that are interleaved with the first protrusion. A cover covers either the first or the second shock absorbing member and a plurality of fasteners removably connect the jaw pad to the shell.

Abstract: A visor locking assembly alone or in combination with a helmet shell and visor. The visor locking assembly is attached to said shell and is used to mount the visor in a manner that allows the visor to be locked in a desired position. The visor locking assembly is configured to prevent the visor from being moved from a fully lowered position to a raised position unless the visor is displaced laterally forward away from the face of the wearer of the helmet. The locking assembly further comprises a body and a rotatable hub, wherein the body comprises a cavity, and wherein the cavity further comprises a protrusion on the wall of the cavity, and wherein the rotatable hub comprises a recess formed along the circumference of the hub. The hub is positioned to rotate within the cavity, and the hub is prevented from rotational movement when the protrusion is positioned within (engaged with) the recess. When the hub is displaced laterally within the cavity away from the protrusion, the hub becomes rotatable.

Abstract: Disclosed is a hinge coupling structure usable with a welding mask, a face shield or a safety helmet, which serves to connect either side of a protective mask, configured to cover a welder's face along with a viewing window, to a corresponding end of a head band used to assist a welder in wearing the protective mask. The hinge coupling structure includes a rail longitudinally provided at the head band, a slider coupled to the rail so as to be moved forward or rearward in a longitudinal direction of the rail, and a hinge unit coupled to the protective mask while being coupled to the slider interposed therebetween. The hinge coupling structures enables distance adjustment between the protective mask and the welder's face in a state in which the head band is worn on the head, which provides more convenient wearing of the protective mask.

Abstract: A head gear assembly for protecting a user's head, the assembly having an upper head portion; a facial protector connectively attached to the upper head portion; and a movable armature for movable engagement to at least a portion of the facial protector, wherein engagement between the movable armature and the least a portion of the facial protector forms at least one gap a gap further comprising a gap size, and wherein the gap size is adjustable from a first size to a plurality of other sizes.

Abstract: An impact sensing device including a plurality of accelerometers orthogonally oriented with respect to each other and attachable at a body location, each capable of producing a signal indicative of an impact. An integrated circuit is configured to determine the magnitude and direction of the impact based on the signals and operative to activate an indicator when the magnitude exceeds a selected threshold based on the direction of the impact. A head injury coefficient is determined based on the magnitude and a duration of the impact, and the threshold level of acceleration is expressed in terms of a head injury coefficient value. The head injury coefficient value is determined by empirically correlating a head injury coefficient measured at the body location and a head injury coefficient measured at the center of mass of a human head resulting from an impact.

Abstract: There is provided a helmet including a shield having inner coupling holes at both ends thereof and fitted and coupled to an assembly coupling hole of a shield coupling assembly provided at a helmet main body and a front opening configured to be opened and closed by the shield. The helmet includes: a lock supporting member fixed to the helmet main body; and a locker including a shield mounting portion fixed to the shield, a coupling shaft coupled to be rotated with the shield mounting portion at an end of the locker, and a locker hooking part coupled to or decoupled from the lock supporting member at the other end of the locker.

Abstract: A helmet assembly including a mandible bracket configured to connect a mandible to a helmet, at least one strap connected to the mandible bracket and configured to extend from the mandible bracket to a rear portion of a helmet. The assembly includes at least one strap guide having a strap engaging portion connected to the strap along a length of the strap for connecting the strap to a helmet, and a fastener engaging portion configured to connect to a fastener attached to a helmet.

Abstract: In a shield for a helmet according to this invention, an air introducing mechanism portion disposed at a region including a lower end portion of a shield main body portion and its vicinity includes a large number of vent holes extending substantially in a vertical direction so that a traveling wind can flow substantially upward from substantially below substantially along the inner surface of the shield main body portion. This invention can provide a shield for a helmet which, despite that raindrops and the like will enter inside the shield main body portion at a low possibility, can introduce the traveling wind inside the shield main body portion well, and in which the shield main body portion can be worked comparatively well and the strength of the shield main body portion is not particularly impaired.

Abstract: Described herein are various protective helmets, including helmets designed for equestrian use. In one embodiment, an equestrian helmet (1) includes a front shell (2) and a rear shell (3). Shell (3) is moveable with respect to shell (1) to provide the helmet with two configurations. The first of these is an open configuration where the helmet is configured for receiving within the helmet or removing from the helmet a human head (4). The second configuration is a closed where shell (3) is releasably lockingly engaged to shell (2) for securely containing head (4) within helmet (1).

Abstract: Provided is a helmet including a half helmet-shaped helmet main body including a main body through hole at each side thereof; a shield that is rotated vertically at a front side of the helmet main body and inserted into the helmet main body and has a through hole at each end thereof so as to be detachably connected to the helmet main body; and a holder having a penetrating connection shaft at its lower surface, the penetrating connection shaft capable of being inserted through the main body through hole and the shield through hole from the outside of the helmet main body and connecting the shield to the helmet main body so as to be rotated vertically.

Abstract: A protective headgear combination has a helmet and at least one ear defender secured on the helmet rotational position of the at least one ear defender relative to the helmet is adjustable about a first axis of rotation, wherein the first axis of rotation is positioned relative to the vertical at an angle of less than 45° for an upright head position of a user of the protective headgear combination.

Abstract: An opening/closing device for openably/closably supports an opening/closing part with regard to an opened/closed part, and the opening/closing device is characterized in that it comprises an attaching part attached to the opened/closed part so as to rotate around a rotation axis together with the opening/closing part, a rotation part rotatably attached to an attaching portion extending from a rotation center of the attaching part and engaged with the opened/closed part, and a friction torque generation means provided between the attaching portion of the attaching part and the rotation part, as well as in that the opening/closing device is so configured that it can bring the opening/closing part to stop using free-stop function, when the opening/closing part is opened and closed with regard to the opened/closed part.

Abstract: A helmet includes a shell, an eyeport formed in the shell, a shield having inwardly projecting hubs, and a pair of sockets on the shell. The sockets are positioned and configured to receive and rotatably capture the inwardly projecting hubs of the shield so that the shield is hingable about the hubs between a closed position covering the eyeport and an open position displaced from the eyeport. Each of the sockets is generally oblong to facilitate insertion of said hubs into the sockets to mount the shield to the helmet and to facilitate removal of the hubs from the sockets to detach the shield from the helmet.

Abstract: A protective sport helmet, such as for lacrosse, includes a hard shell portion, a lining portion, and an adjustment mechanism. The inner side of the adjustment mechanism includes an adjustment protective pad. Together, the lining portion and the inner surface of the adjustment protective pad define an interior region of the helmet wherein the user's head is introduced. The adjustment mechanism includes a lower rear shell portion having a clutching mechanism that allows the user to manually adjust the size of the interior region via a strapping system of the helmet to couple snugly around the user's head. The clutching mechanism also prevents the interior region from being easily altered in the absence of manual adjustment to the adjustment mechanism. The strap includes a hard end material that engages the adjustment mechanism and a flexible, durable and tough material that conforms to a wearer's head.

Abstract: An oral bib includes a thin sheet protective shield portion having resistance to the passage of a sexually transmitted disease microbe therethrough. The shield portion is configured to overlie a chin and mouth region of a wearer and has opposing sides. A strap is adapted to secure said shield portion to a wearer head.

Abstract: A quick release faceguard retainer for use with a protective headgear and faceguard. The headgear has a face opening and an outer surface with a selected curvature. The faceguard has at least one top substantially horizontal bar. The retainer includes a base portion with a front surface and a back surface. The back surface of the base is adapted to be fixedly attached to the outer surface of the headgear above the face opening and has a curvature matching the curvature of the outer surface of the headgear above the face opening. Two complementary retention arms protrude out from the front surface of the base to form two complementary retention channels. One channel has a downward opening and the other has an upward opening and both have an inner surface which together surround the top horizontal bar of the faceguard. Also provided is a faceguard engagement space between the two retention arms having a size for receiving the top bar.

Abstract: A helmet (1, 100, 200) for protecting a user's head (90), comprising a cap (2) for protecting the user's cranium (92) and a chin guard (3) for protecting the user's chin (93), wherein the chin guard (3) is adapted to move between a first protecting position (31) and a second protecting position (32) under the action of a force (50) acting in the direction of the chin (93) of a user wearing on said helmet (1), the chin guard (3) in said second protecting position (32) being nearer to the user's chin (93) with respect to the chin guard (3) in said first protecting position (31).

Abstract: There is disclosed a visor comprising at least one transparent plate, in which or on which a light-sensitive material is provided, which material has the property of transmitting less light as more light is incident thereon. In particular UV light-intensity-activated, UV light-blocking pigments, photochromatic pigments are used in the light-sensitive material. The light-sensitive material, which may be fixedly or detachably provided on the transparent plate, is transparent in the deactivated condition thereof.

Abstract: Protective structures, such as helmets, may have a shell including an outer shell and a tunnel element integral to the outer shell. The tunnel element may have a first opening at an outer surface side of the shell and a second opening at an inner surface side of the shell so that air flow may occur between the openings and wherein the tunnel element is fused to the outer shell. An impact liner may be directly in-molded to shells suitable for use in motorcycle helmets and other helmets that must meet certain standards. The impact liner may include one or more venting channels that are coupled to a tunnel integral to the shell structure.

Abstract: A respirator mask has a removably mounted support frame that adjustably and removably mounts a corrective lens frame. The corrective lens frame further has a molded bridge with a biasing member embedded therein. A pivotal tab on the support frame is received in one of a plurality of detents on the lens frame for releasably securing the lens frame in the desired position on the support frame. Laterally disposed mounting lugs on the support frame are received in integrally molded pockets in the respirator mask.

Abstract: The present invention relates to a protective mask adapted to be worn by a person engaging in the game of paintball. The mask has a main body to cover the front, sides, mouth and ears of a user's face. It also has a removable flexible transparent lens that locks into a rigid support frame formed in the mask. The mask also has a strap to securely support the mask on a wearer's head, and a removable face engaging element provided to accommodate a face of the wearer. This face engagement element evenly engages around the wearer's face in a cushioned manner because its face engagement portion is made of foam that engages the user's face along the entire perimeter of the face engagement element. The face engagement element is securely locked onto the mask by locking clips that fit into openings on both sides of the face engagement element.

Abstract: There is provided a helmet with an improved cradling function and fitting comfort, while also making the helmet easier to put on or take off. The invention comprises an attaching member and a cushion member. The attaching member has a base member mounted in contact with a shell, and a form-maintaining member disposed at an inner lower section of the base member, there being a space left with respect to the base member. The form-maintaining member, while simultaneously keeping a surface corresponding to the cushion member in a profile following the cheek to the chin portion of a wearer, causes the space to contract as a result of being outwardly displaced in the thickness direction in response to greater-than-normal force applied when a helmet is put on and taken off; and, following the displacement that causes the space to contract, is restored so as to return to an original location under normal circumstances, and kept there.

Abstract: Clips for securing a face mask to an article of head gear, and for releasing the face mask without the need for any special tools or equipment. In certain embodiments, the clip may comprise a base and a retaining member that is pivotably coupled to the base. When the retaining member is engaged with the base, structure on the base prevents the retaining member from pivoting open, thus securing the face mask within the clip. To disengage the retaining member (and release the face mask from the clip), a user may squeeze or flex a portion of the base, which causes the retaining member to disengage and pivot open.

Abstract: A helmet is provided including an attachable and detachable shield plate by a simple structure. The helmet includes a helmet main body; a first plate positioned onto an outer surface of the helmet main body; a second plate structurally combined with the first plate and capable of sliding between a locking position and an unlocking position with respect to the first plate; a spring for pressurizing the second plate toward the locking position; and a shield plate capable of rotating with respect to the helmet main body and attachably and detachably installed on the first plate by the slide movement.

Abstract: A safety helmet designed to protect the head of motorcyclists/bicyclists, athletes, soldiers, law enforcement, and/or heavy machinery operators due to impact/trauma and to provide emergency removal after an accident. The safety helmet comprises a shell defined by a right portion and a left portion, an outer surface and inner surface, and a front section and rear section. An opening at the front section allows the user to see outside of the shell, and a face shield, attached at opposing sides of the opening by a hinge, covers a substantial portion of the user's face. A plurality of securing mechanisms extends between the right portion and the left portion and holds the right portion and left portions in a separable manner. A resilient protective layer includes a top surface and a bottom surface for contacting with the inner surface of the shell and to fit over the head of the passenger.

Abstract: The invention concerns a protective helmet comprising a shell (1) whereon are rotatably mounted a visor (2) and a chin strap (3), the lower portion of the visor (2) being urged to rest on a zone (4) of the chin strap (3) when they are lowered and the chin strap (3) capable of being raised about the visor (2). The invention is characterized in that the helmet is such that it comprises additional means for moving the visor (2) configured to bring its lower edge closer to or move it away from the raising trajectory of the support zone (4) on the chin strap (3).

Abstract: The position controlling mechanism is provided to be pivotally mounted on a side of a full-faced helmet for adjusting the positions of a chin guard and a visor plate of the helmet. The position controlling mechanism includes at least a chin guard, at least a spring, at least a rotor, at least a visor plate, at least an interaction gear, at least a transmission gear, at least a rotative element, at least an elastic ring and at least a visor plate base. After the position controlling mechanism being assembled, the rotor is capable of being rotated to transmit rotation to a gear chain, so as for the chin guard and the visor plate to be moved between activated and retracted positions.

Abstract: A performance enhancing and force absorbing mouthguard adapted to fit the upper teeth of the mouth of an athlete wherein the mouthguard is unobstructably tethered and of a composite material. The first internal layer is a nonsoftenable flexible framework which will permit the mouthguard to hold its shape during fitting as well as to absorb and dissipate significant impact conveyed to the upper teeth. A hard, durable bite plate wedge lowers the condyle from the temporomandibular joint in a fulcrum action to place the lower jaw in an optimum condition preventing impingement upon the nerves and arteries as well as spacing the upper and lower teeth apart. Elastomeric traction pads are on the bottom of the mouthguard and are grippingly engaged by the posterior teeth of the lower jaw.

Abstract: An article of clothing, comprising a coat assembly having a front side, a backside, and first and second sleeves. The front side and the backside define a shoulder area where they meet above the first and second sleeves. A hood assembly has a crown. Extending from the crown is a flap that terminates at an end. Also extending from the crown at a predetermined angle is a visor. The visor extends from the crown a first predetermined distance. The hood assembly comprises a first zipper tape. The first zipper tape comprises first zipper teeth. A shield assembly comprises a shield. The shield has a second zipper tape. The second zipper tape comprises second zipper teeth. The second zipper teeth have means to engage the first zipper teeth.

Abstract: A helmet shield attaching mechanism with which when raising a shield, the shield and/or an anti-fogging auxiliary shield will not catch on a window opening rim member for a head protecting body, in spite that the operation of raising the shield in a fully-closed state is comparatively simple and that the mechanism has a comparatively simple structure. The helmet shield attaching mechanism includes a stationary base member fixing to the head protecting body, a movable base member attaching to the stationary base member so as to be movable forward and backward with respect to the stationary base member, and the shield which is pivotally supported by the movable base member. When a substantially upward force acts on the shield which is in a fully-closed state, at least one cam follower provided to the shield or stationary base member relatively follows at least one cam surface formed on the stationary base member or shield, to move the shield forward substantially to the front side.

Abstract: The present invention provides a transparent, removable, biodegradable material for use on eyewear, computer screens, touch sensitive devices, mobile phones, and the like. Because the material is transparent, it can provide protection for eyewear or devices such as laptops and mobile phones without obscuring vision or display. Because the material is biodegradable, it can be safely discarded no matter the location, thereby reducing cleanup and disposal costs. The biodegradable nature of the material greatly extends its range of uses to include uses such as road motorcycling, search and rescue use, medical uses, mountain biking, vehicle windscreen protection such as for helicopters, skydiving, parasailing, sailing, laptops and mobile phone use, caving, potholing, spelunking, cave diving, a wide variety of military uses, protection in conditions such as sandstorms, and other activities where biodegradable, transparent, removable screens would be advantageous.

Abstract: In a shield member for covering a face of a wearer and a protective cap in which the shield member is provided, image distortion is made as small as possible even when he or she sees an object through its peripheral portions of the shield member. In a shield member 5 for covering a face of a wearer installed in a cap body 3 for protecting a hear of the wearer, it is a shield member 5 formed of a transparent body or a translucent body in a curved plate-like form and gradually becoming thinner as going from its central portion to its peripheral portion.

Abstract: A safety helmet includes a cap equipped with at least one visor, which is hinged to the sides of the front opening of the cap itself and can be rotated between a position of interception of the front opening and a raised position with respect to the opening. A shielding element is also hinged to the sides of the front opening of the cap and is rotatable both with respect to the cap and with respect to the visor. The relative rotary displacement of the shielding element with respect to the visor, and vice versa, is limited at a predefined angular interval, in both of the directions of rotation.

Abstract: A protective sport helmet, such as for lacrosse, includes a hard shell portion, a lining portion, and an adjustment mechanism. The inner side of the adjustment mechanism includes an adjustment protective pad. Together, the lining portion and the inner surface of the adjustment protective pad define an interior region of the helmet wherein the user's head is introduced. The adjustment mechanism includes a lower rear shell portion having a clutch mechanism that allows the user to manually adjust the size of the interior region via a strapping system of the helmet to couple snugly around the user's head. The clutching mechanism can prevent the interior region from being easily altered in the absence of manual adjustment to the adjustment mechanism. The strap includes a hard end material that engages the adjustment mechanism and a flexible, durable and tough material that conforms to a wearer's head.

Abstract: A pivot assembly for use with headgear that includes a headtop and a shield, and a method for coupling the headtop to the shield using the pivot assembly. The pivot assembly can include a housing, a socket dimensioned to be received in the housing and having a plurality of first engagement features, and a post having a plurality of second engagement features adapted to engage the first engagement features. The pivot assembly can further include a spring dimensioned to be received in the housing to bias the first engagement features and the second engagement features into engagement, while allowing relative rotation between the post and the socket. A method can include moving the socket in a first direction into the housing, moving the post in a second direction that is different from the first direction toward engagement with the socket, and moving the spring in the first direction into the housing.

Abstract: In a protective cap housing a shield member for covering almost all of a face of a wearer in the interior of a cap body, the protective cap capable of retracting the shield member in the interior of the cap body is provided. It is a protective cap 1 having a cap body 3 formed in a semi-spherical-shell-like form for protecting a head of a wearer, a shield member 5 for protecting almost all of a face of the wearer, and guide means 7 for guiding the shield member 5 to move along a curved surface of the cap body 3 between a housing position P1 to be housed in the cap body 3 and a shielding position P3 for covering almost all of the face of the wearer.

Abstract: A safety helmet visor setting mechanism includes a shell having a shaft base inside at each side, with one side provided with a shell base provided with an internal lodging space and with an external wall. A control mechanism, located at the right side of the shell, has a knob for turning and driving an actuating element that again links a handle to rotate a displacement. The knob and the actuating element are provided with a fixed dish in between and provided with corresponding oblique chunks and sliders in between. The fixed dish and the handle are provided with corresponding clasp segments and lumps. A joint mechanism, set up on the shaft base of both sides of the shell, includes a first visor joint and a second visor joint each provided with hollows. The first visor joint and the handle of the control mechanism are linked by a rod. A visor has a clasp slice at each of both sides for insertion into the hollow of the visor joint.

Abstract: A safety helmet visor setting mechanism includes a shell having an indent at each side and a long opening behind the indent at one side. An anchored unit fits in the long opening and has two grooves. A hold plate has two push chunks placed in the two grooves respectively. A link bar, fixed in the anchored unit and jostled with the hold plate, can be moved by the drive of the push chunk. A cover, capping the anchored unit, jostles with the link bar and the hold plate for a lockup. A first visor joint, positioned inside the shell in one side, has a bottom end pinned joined with the top end of the link bar, and has a top end provided with a cave. A second visor joint, positioned inside the shell in the other side has a springy slice forming an accommodation space with the shell. A visor has a clasp slice at each side penetrating the caves and the accommodation spaces of both the first visor joint and the second visor joint for assembly.

Abstract: The invention provides a shield structure which is compatible for a plurality of helmets in spite that an auxiliary shield mounting mechanism has a comparatively simple structure, is less expensive, and provides a good appearance as a whole. According to one aspect of the invention, each of left and right auxiliary shield mounting mechanisms which are disposed on a main shield includes an inner auxiliary shield mounting portion and outer auxiliary shield mounting portion in common.

Abstract: Protective flexible eyewear for, inter alia, providing for increased comfort and fit among a variety of users having different facial shapes.

Abstract: A method of enhancing health through the generation in close proximity of a surface of a subject, nitric oxide and nitric oxide precursors using bacteria adapted to oxidize ammonia and urea derived from perspiration is described. Local and systemic effects are described including reduction in vascular disease, enhancement of sexual function, improved skin health, and reduced transmission of sexually transmitted diseases.

Abstract: A helmet has shell with a front opening covered by a faceguard of elongated wire segments. Loopstraps engage around wire segments at sides and a crown of the shell and fasteners connect the loopstraps to the shell. The fasteners each have a nut extending from an inside of the helmet shell out into a hole of the shell and an aperture of the loopstrap, and a stud removably connected to the nut by pushing and turning the stud by about a quarter turn to lock the stud to the nut. A tension spring between a head of the stud and the loopstrap urges the stud away from the nut when the stud is rotated to unlock the stud for facilitating a quick removal of the stud from the nut and a quick disconnection of the loopstrap and faceguard from the helmet shell.

Abstract: The present invention is to provide a multifunctional safety helmet which comprises: a shell, having a concavity at each side that forms a protection lump at its front; a chin shield, positioned in the front of the shell where each of the top sides has an ear cover, where the chin shield is pivoted on both sides of the shell with a fixing by a lift adjusting device; a clasp device, located in the interior of the front bottom of the chin shield and the interior of the protection lump of the shell, comprising: a button, linked by a spring for automatic bounce back; a link pole, with one end connecting to the end of the button; a slide, embedded in the seat, and connected to the other end of the link pole; a clasp chunk, positioned under the slide; and a movable clasp body, located inside the protection lump of the shell, and fastened by a cover, where an opening is devised for accommodating the slide, and an elastic element is placed between the clasp body and the cover, while the clasp body further comprises a