US20150052668A1 - Helmet suspension system - Google Patents
Helmet suspension system Download PDFInfo
- Publication number
- US20150052668A1 US20150052668A1 US14/528,761 US201414528761A US2015052668A1 US 20150052668 A1 US20150052668 A1 US 20150052668A1 US 201414528761 A US201414528761 A US 201414528761A US 2015052668 A1 US2015052668 A1 US 2015052668A1
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- US
- United States
- Prior art keywords
- damper
- arm
- track
- end portion
- relative
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
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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
- A42B3/0406—Accessories for helmets
- A42B3/0473—Neck restraints
-
- 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
- A42B3/0406—Accessories for helmets
-
- 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
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/08—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions
- A63B71/10—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the head
Definitions
- the present invention relates generally to a suspension system and more specifically to a suspension system for a helmet to restrict quick and rapid movements thereof.
- Motor sports have developed over the years to achieve worldwide interest.
- Motor sports may generally refer to that genus of sports which utilizes motorized vehicles, typically for racing competition.
- Exemplary motor sports include, but are not limited to, motorcycle racing, auto racing, boat racing, air racing, and snowmobile racing.
- individuals typically operate the motorized vehicles at high rates of speed, which is thrilling for the participants, as well as for spectators.
- the helmet typically includes a hard outer surface and a padded inner surface to soften the impact on a driver's head.
- the restraint and helmet systems offer significant safety benefits to a driver, the helmet typically remains susceptible to significant accelerations/decelerations in the event of an accident.
- a helmet suspension system which is configured to mitigate rapid movements, i.e., acceleration and deceleration, of a user's head.
- the helmet suspension system connects to a base and a helmet worn by a wearer and allows for slow, safe movements of the helmet relative to the base, but restricts rapid and generally unsafe movements of the helmet relative to the base.
- the helmet suspension system includes a track housing connectable to the helmet and defining a track channel.
- a first track insert is disposed within and moveable within the track channel.
- the helmet suspension system further includes a first arm having a first end portion and a second end portion. The first end portion is connected to the first track insert and the first arm being moveable relative to the track housing as the first track insert moves within the track channel.
- a first damper is moveably connected to the second end portion of the first arm and is configured to define an acceleration threshold of the second end portion relative to the first damper. The first damper allows movement of the first arm relative to the first damper when the motion of the first arm is below the acceleration threshold and restricts movement of the first arm relative to the first damper when the motion is above the acceleration threshold.
- the first damper may include a damper housing defining an inner chamber and a flapper disposed within and moveable within the inner chamber.
- the flapper may divide the inner chamber into a first chamber portion and a second chamber portion.
- the flapper may further define a flapper opening through which the first and second chamber portions are fluidly connectable.
- the first damper may additionally include a valve connected to the flapper to control fluid communication between the first and second chamber portions via the flapper opening.
- the valve may be moveable relative to the flapper between an open position, wherein the valve is positioned to allow fluid flow through the flapper opening between the first and second chambers and a closed position wherein the valve substantially blocks fluid flow through the flapper opening between the first and second chamber portions.
- the valve may be biased toward the open position.
- the helmet suspension system may additionally include a second arm connected to a second damper and a second track insert, a third arm connected to a third damper and a third track insert, and a fourth arm connected to a fourth damper and a fourth track insert.
- FIG. 1 is an upper perspective view of an embodiment of a helmet suspension system connected to a helmet;
- FIG. 2 is an upper perspective view of the helmet suspension system shown in FIG. 1 , wherein the helmet suspension system has been inverted relative to its orientation in FIG. 1 and the helmet is shown in phantom;
- FIG. 3 is an exploded upper perspective view of the helmet suspension system shown in FIG. 2 ;
- FIG. 4 is a partial lower perspective view of a guide which is connectable adjacent a lower rim of the helmet;
- FIG. 5 is a partial upper perspective view of a support arm connected to a motion restriction member which is insertable within the guide;
- FIG. 6 is an upper perspective view of a first damping element and a first support arm pivotally connected to each other, and a second damping element shown in phantom;
- FIG. 7 is an exploded view of a damping element
- FIG. 8 side sectional view of the damping element wherein the first and second valves are both in the open position to allow pivotal movement of the flapper within the housing;
- FIG. 9 is a side sectional view of a damping element wherein a first valve is closed to restrict movement of a flapper in a first direction;
- FIG. 10 is a side sectional view of the damping element wherein a second valve is closed to restrict movement of the flapper in a second direction;
- FIG. 11 is a lower perspective view of a flapper element
- FIG. 12 is a lower perspective view of the flapper element encased in a seal.
- FIG. 13 is a partial upper perspective view of the flapper element and a seal.
- the helmet suspension system 10 employs an innovative motion dampening mechanism configured to protect a wearer's head from violent movements. More specifically, the innovative motion dampening mechanism allows the wearer to slowly move the helmet 12 in safe, controlled movements up and down, as well as side-to-side. However, the motion dampening mechanism is configured to substantially restrict rapid movements of the helmet 12 (i.e., prevent rapid accelerations of the helmet 12 ).
- the track housing 14 may be attached to the helmet 12 via nails, rivets, adhesives or other mechanical fasteners known in the art, or alternatively, the track housing may be integrally formed into the body of the helmet 12 . In this regard, the track housing 14 may be retro-fit onto an existing helmet 12 or integrated into the design of a newly manufactured helmet 12 .
- the track housing 14 is generally C-shaped and defines an inner track channel 16 .
- a track insert 18 is disposed within the track channel 16 and is configured to move within the channel 16 as the wearer moves his head while wearing the helmet 12 .
- the track housing 14 serves as a “guide” which allows for movement of the first track insert 18 along a fixed track.
- the track insert 18 may translate, pivot, or rotate within the channel 16 .
- the track insert 18 is preferably captured within the channel 16 to remain within the channel 16 during use of the helmet 12 .
- the channel 16 and first track insert 18 are sized and configured to withstand large forces which may be generated during usage of the helmet 12 , as described in more detail below.
- the track insert 18 is connected to an arm 20 which includes a first end portion 22 and a second end portion 24 , with the first end portion 22 being connected to the track insert 18 .
- the first end portion 22 defines a rounded segment having an aperture 21 extending therethrough to facilitate connection to the track insert 18 (see FIG. 3 ).
- the track insert 18 may also be comprised of two insert portions 18 a, 18 b, which collectively define the track insert 18 .
- Each insert portion 18 a, 18 b includes a respective aperture 23 a, 23 b which are coaxially aligned with the aperture 21 formed within the arm 20 and a mechanical fastener 25 may be inserted through the apertures 21 , 23 a, 23 b to connect the arm 20 to the insert portions 18 a, 18 b.
- the channel 16 may be configured to define an opening width, “O”(see FIG. 4 ) and a maximum inner width, “M” to allow the insert 18 to easily move within the channel 16 , while at the same time maintaining the insert 18 therein.
- the insert 18 may define a diameter or outer dimension that is larger than the opening width O and smaller than the maximum inner width M to allow the insert 18 to remain in the channel 16 .
- the axle 26 may define a length that is also longer than the opening width O and smaller than the maximum inner width M to capture the axle 26 within the channel 16 .
- the insert 18 and first end portion 22 of the arm 20 may be placed within the channel 16 during construction or assembly of the system 10 .
- the track housing 14 may be comprised of several pieces or sections which are connected to each other during assembly.
- the insert 18 and arm 20 may be disposed within the channel 16 during the assembly of the track housing 14 .
- the second end portion 24 of the arm 20 may be connected to a substantially stationary surface. Therefore, as the helmet 12 is moved in response to movements of the wearer's head, arm 20 pivots and the insert 18 moves along the track channel 16 .
- a damper assembly 27 which includes the arm 20 and a damping mechanism 28 connected to the second end portion 24 of the arm 20 .
- the second end portion 24 of the first arm 20 is connected to a shaft 30 (see FIGS. 7-10 ) that is rotatable within the damping mechanism 28 as the arm 20 pivots during movement of the insert 18 within the channel 16 .
- the damping mechanism 28 is configured to restrict quick rotational of the shaft 30 , while allowing slow rotations of the shaft 30 .
- the damping mechanism 28 includes a damper housing 32 and a damper cap 35 collectively defining an inner chamber 34 .
- a flapper 36 is connected to the shaft 30 and is moveable within the inner chamber 34 .
- the flapper 36 may be of two-piece construction and include a first flapper body 38 and a second flapper body 40 that are connected to each other and the shaft 30 , as shown in FIG. 11 .
- the first and second flapper bodies 38 , 40 may be connected to the shaft 30 by a pair of mechanical fasteners 42 which are inserted through holes formed within the first and second flapper bodies 38 , 40 and the shaft 30 .
- the flapper 36 divides the inner chamber 34 into first and second chamber portions 44 a, 44 b.
- the outer periphery of the flapper 36 is substantially complimentary to the cross-sectional shape of the damper housing 32 .
- the outer periphery of the flapper 36 also includes a seal 46 to create fluid-tight engagement between the flapper 36 and the damper housing 32 .
- the flapper 36 may be molded within a sealing material, such as rubber, to form the seal 46 about the flapper 36 .
- the flapper 36 additionally includes an opening 48 (see FIGS. 11 and 12 ) extending therethrough to allow for fluid communication between the first and second chamber portions 44 a, 44 b.
- the opening 48 may be collectively formed by separate openings formed within each of the flapper bodies 38 , 40 which become aligned when the bodies 38 , 40 are connected to each other.
- a valve 50 may be connected to the flapper 36 to control fluid communication through the opening 48 between the first and second chamber portions 44 a, 44 b.
- the valve 50 is moveable relative to the flapper 36 between an open position, wherein fluid may flow through the opening 48 between the first and second chamber portions 44 a, 44 b, and a closed position wherein the valve 50 effectively closes the opening 48 to substantially restrict or prevent fluid from communication between the first and second chamber portions 44 a, 44 b through the opening 48 .
- the valve 50 includes a first valve body 50 a and a second valve body 50 b disposed on opposed sides of the flapper 36 .
- the first valve body 50 a is disposed adjacent the first flapper body 38
- the second valve body 50 b is disposed adjacent the second flapper body 40 .
- a valve seal 52 (see FIGS. 12 and 13 ) is disposed within the opening 48 and the valve bodies 50 a, 50 b engage with the valve seal 52 when they are in the closed position to prevent fluid communication through the opening 48 .
- FIG. 13 only shows the second valve body 50 b to illustrate the inside of the valve 50 , although it is understood that in a preferred embodiment, the valve 50 includes both first and second valve bodies 50 a, 50 b, as shown in FIGS. 8-10 .
- each damping mechanism 28 is filled with a damping fluid, which may be a liquid or gas.
- the damper cap 35 may include an opening 37 through which the damping fluid may be inserted into the inner chamber 34 .
- a plug 39 and seal 41 may be used to fluidly close the opening 37 once the fluid is inserted within the inner chamber 34 .
- the plug 39 may define external threads which cooperate with internal threads formed within the opening 37 to effectuate engagement between the plug 39 and the damper cap 35 .
- the engagement between the plug 39 and damper cap 35 must also be tight enough to maintain the fluid seal and to withstand the hydraulic forces discussed in more detail below.
- the movement of the flapper 36 within the inner chamber 34 creates a hydraulic force within the inner chamber 34 , which is critical to the function of restricting sudden movements of the helmet 12 , while allowing slow and safe movements of the helmet 12 .
- the size of the first and second chamber portions 44 a, 44 b varies. For instance, when the flapper 36 moves in the direction identified by arrow 56 in FIG. 9 , the size of the first chamber portion 44 a decreases and the size of the second chamber portion 44 b increases. Thus, the fluid flows from the first chamber portion 44 a to the second chamber portion 44 b when the flapper 36 moves in direction 56 . Conversely, when the flapper 36 moves in the direction identified by arrow 58 in FIG. 10 , the fluid flows from the second chamber portion 44 b to the first chamber portion 44 a.
- first and second valve bodies 50 a, 50 b must both be in the open position. If one of the first and second valve bodies 50 a, 50 b moves toward the closed position, fluid cannot flow between the first and second chamber portions 44 a, 44 b, which effectively locks the flapper 36 in place. When the flapper 36 is locked in place, movement of the helmet 12 is restricted to protect against dangerously quick movements.
- both valve bodies 50 a, 50 b are biased toward an open position.
- a force must be applied to one of the valve bodies 50 a, 50 b, which overcomes the biasing force and causes the valve body 50 a, 50 b to move to the closed position.
- the biasing forces applied to the valve bodies 50 a, 50 b define the “acceleration threshold” which must be overcome in order to “lock” the suspension system 10 . If one of the biasing forces is not overcome, then the acceleration threshold has not been met (i.e., the motion of the user is safe). However, if the movement of the user's head causes the biasing force to be overcome (as described below), then the acceleration threshold has been exceeded, and the system 10 effectively restricts further movement of the user's head.
- FIG. 9 shows the first valve body 50 a in the closed position and the second valve body 50 b in the open position.
- the flapper 36 is being urged quickly in a first direction 56 , which creates a hydraulic pressure in the first chamber portion 44 a that is greater than the biasing force urging the first valve body 50 a toward the open position, which causes the first valve body 50 a to move into the closed position.
- the hydraulic pressure exceeds the acceleration threshold.
- fluid communication between the first and second chamber portions 44 a, 44 b is substantially restricted, thereby “locking” the flapper 36 in place until the hydraulic force is reduced to a point below the acceleration threshold which allows the first valve body 50 a to move from the closed position toward the open position to effectuate fluid communication between the first and second chamber portions 44 a, 44 b.
- the flapper 36 is being urged in a second direction 58 which generates a hydraulic force in the second chamber portion 44 b, which is greater in magnitude than the biasing force applied to the second valve body 50 b (i.e., greater than the acceleration threshold). Therefore, the hydraulic force causes the second valve body 50 b to move into the closed position to restrict fluid flow from the second chamber portion 44 b to the first chamber portion 44 a to effectively “lock” the flapper 36 in place.
- the flapper 36 remains locked until the hydraulic force created by the flapper 36 decreases below the acceleration threshold to allow the second valve body 50 b to move from the closed position toward the open position, which thereby allows fluid to flow from the second chamber portion 44 b to the first chamber portion 44 a.
- the acceleration threshold is directly correlated to the biasing force created by the springs 54 connected to the valve bodies 50 a, 50 b and to the hydraulic pressure created by the fluid within the damper 28 .
- the exemplary embodiment is a hydraulic-type regulation system.
- the system may by an electro-mechanical regulation system, which may employ a series of pressure sensors and mechanical suspension devices, which may be “locked” if the pressure sensors detect movement of the helmet above or below the acceleration threshold.
- the acceleration threshold may be adjusted or modified if desired by the user.
- the acceleration threshold may be adjusted by modifying the biasing force applied by the spring 54 .
- a damping mechanism 28 having a stronger spring 54 may be swapped out for a damping mechanism 28 having a weaker spring 54 in order to increase the acceleration threshold.
- the acceleration threshold may be programmed into the unit, such that the mechanical suspension devices may lock up only in response to a higher force.
- the movement of the flapper 36 is correlated to the movement of the helmet 12 via the interconnection of the flapper 36 to the helmet 12 .
- the flapper is connected to the helmet 12 via the shaft 30 , a coupler 60 and a screw 62 which connects the coupler 60 to the first arm 20 .
- the shaft 30 is sized and configured to seat within a recess 64 formed within the coupler 60 .
- An adhesive may be disposed within the recess to enhance the engagement between the coupler 60 and the shaft 30 .
- the shaft 30 and recess 64 may be sized to enhance engagement therebetween, particularly in view of the rotational forces applied to the shaft 30 and recess 64 .
- the exemplary shaft 30 and recess 64 define complimentary hexagonal configurations, which facilitate the transfer of rotational force between the shaft 30 and coupler 60 .
- the coupler 60 is additionally secured to the first arm 20 by inserting an end portion 66 of the coupler 60 through an opening 68 formed within the first arm 20 .
- the end portion 66 and the opening 68 define complimentary quadrangular configurations, which facilitate communication of rotational forces between the first arm 20 and the coupler 60 .
- the screw 62 further connects the coupler 60 to the first arm 20 .
- the screw 62 includes a head portion 70 having a recess 72 formed therein that is sized and configured to be complimentary to the end portion 66 of the coupler 60 .
- the end portion 66 is at least partially received within the recess 72 .
- the end portion 66 includes an internally threaded aperture (not shown) which engages with the externally threaded shaft 74 to tighten the screw 62 to the coupler 60 .
- the helmet suspension system 10 may include a plurality of damper assemblies 27 , each having a damping mechanism 28 , arm 20 and track insert 18 .
- the helmet 12 may be effectively “locked” (i.e., movement of the helmet relative to the damper assemblies 27 is substantially restricted). If only one damper assembly 27 is used, it may be possible for the helmet 12 to pivot or move about the track insert 18 when the damping mechanism 28 is locked. Thus, by employing a plurality of damper assemblies 27 , movement of the helmet 12 is effectively restricted when the damper assemblies 27 are locked.
- the helmet suspension system 10 includes four damper assemblies 27 .
- Each damper assembly 27 includes a track insert 18 disposed within the track channel 16 and a respective arm 20 connected to the track insert 18 .
- Each damper assembly 27 further includes a damping mechanism 28 , as described in more detail above, connected to a respective arm 20 .
- a pair of damping mechanisms 28 are connected to a common base member 76 .
- the base member 76 may be mounted to a shoulder pad of a driver suit, or to a surface of the vehicle. For instance, in auto racing, the cars may be outfitted with protective structures near the head, neck or shoulders of the driver to which the base member 76 may be mounted. If the suspension system 12 is being used in connection with a football helmet or hockey helmet, the base member 76 may be mounted to a shoulder pad or other protective article worn by the wearer.
- Each damping mechanism 28 may include a mounting aperture 78 through which a mechanical fastener 80 , such as a screw, rivet, or the like, may be inserted.
- the mechanical fastener 80 may also be inserted through an aperture formed within the base member 76 for connecting the base member 76 to the damping mechanism 28 .
- a double-washer 82 may also be used to join a pair of damping mechanisms 28 . More specifically, the double-washer 82 may include a pair of apertures which are aligned with the mounting apertures 78 of a pair of damping mechanisms 28 such that the mechanical fasteners 80 may be advanced through the double-washer 82 before insertion into the mounting apertures 78 .
- the suspension system 10 may be used to protect the helmet 12 from rapid acceleration/deceleration.
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Abstract
Provided is a helmet suspension system which is configured to mitigate rapid movements, i.e., acceleration and deceleration, of a user's head. The helmet suspension system connects to a base and a helmet worn by a wearer and allows for slow, safe movements of the helmet relative to the base, but restricts rapid and generally unsafe movements of the helmet relative to the base.
Description
- (Not Applicable)
- (Not Applicable)
- 1. Field of the Invention
- The present invention relates generally to a suspension system and more specifically to a suspension system for a helmet to restrict quick and rapid movements thereof.
- 2. Description of the Related Art
- It is well known that motor sports have developed over the years to achieve worldwide interest. Motor sports may generally refer to that genus of sports which utilizes motorized vehicles, typically for racing competition. Exemplary motor sports include, but are not limited to, motorcycle racing, auto racing, boat racing, air racing, and snowmobile racing. During racing competition, individuals typically operate the motorized vehicles at high rates of speed, which is thrilling for the participants, as well as for spectators.
- The high speeds associated with most motor sports, which accounts for much of the thrill connected with motor sports, also present safety concerns for the drivers. Along these lines, during an accident, the motorized vehicle may impact a barrier, wall or another vehicle, which may cause rapid deceleration. During the rapid deceleration, the participant's body is susceptible to injury. Therefore, restraint systems have been developed to restrain the participant's body in the event of a crash.
- It is also well-known for drivers to wear protective helmets when operating motorized vehicles to protect their heads in the event of a crash. The helmet typically includes a hard outer surface and a padded inner surface to soften the impact on a driver's head. Although the restraint and helmet systems offer significant safety benefits to a driver, the helmet typically remains susceptible to significant accelerations/decelerations in the event of an accident.
- Therefore, there is a need in the art for a safety device which mitigates the rapid movement of a protective helmet. The present invention addresses this particular need, as will be discussed in more detail below.
- According to an aspect of the present invention, there is provided a helmet suspension system which is configured to mitigate rapid movements, i.e., acceleration and deceleration, of a user's head. The helmet suspension system connects to a base and a helmet worn by a wearer and allows for slow, safe movements of the helmet relative to the base, but restricts rapid and generally unsafe movements of the helmet relative to the base.
- According to one embodiment, the helmet suspension system includes a track housing connectable to the helmet and defining a track channel. A first track insert is disposed within and moveable within the track channel. The helmet suspension system further includes a first arm having a first end portion and a second end portion. The first end portion is connected to the first track insert and the first arm being moveable relative to the track housing as the first track insert moves within the track channel. A first damper is moveably connected to the second end portion of the first arm and is configured to define an acceleration threshold of the second end portion relative to the first damper. The first damper allows movement of the first arm relative to the first damper when the motion of the first arm is below the acceleration threshold and restricts movement of the first arm relative to the first damper when the motion is above the acceleration threshold.
- The first damper may include a damper housing defining an inner chamber and a flapper disposed within and moveable within the inner chamber. The flapper may divide the inner chamber into a first chamber portion and a second chamber portion. The flapper may further define a flapper opening through which the first and second chamber portions are fluidly connectable. The first damper may additionally include a valve connected to the flapper to control fluid communication between the first and second chamber portions via the flapper opening. The valve may be moveable relative to the flapper between an open position, wherein the valve is positioned to allow fluid flow through the flapper opening between the first and second chambers and a closed position wherein the valve substantially blocks fluid flow through the flapper opening between the first and second chamber portions. The valve may be biased toward the open position.
- The helmet suspension system may additionally include a second arm connected to a second damper and a second track insert, a third arm connected to a third damper and a third track insert, and a fourth arm connected to a fourth damper and a fourth track insert.
- The present invention is best understood by reference to the following detailed description when read in conjunction with the accompanying drawings.
- These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings in which like numbers refer to like parts throughout and in which:
-
FIG. 1 is an upper perspective view of an embodiment of a helmet suspension system connected to a helmet; -
FIG. 2 is an upper perspective view of the helmet suspension system shown inFIG. 1 , wherein the helmet suspension system has been inverted relative to its orientation inFIG. 1 and the helmet is shown in phantom; -
FIG. 3 is an exploded upper perspective view of the helmet suspension system shown inFIG. 2 ; -
FIG. 4 is a partial lower perspective view of a guide which is connectable adjacent a lower rim of the helmet; -
FIG. 5 is a partial upper perspective view of a support arm connected to a motion restriction member which is insertable within the guide; -
FIG. 6 is an upper perspective view of a first damping element and a first support arm pivotally connected to each other, and a second damping element shown in phantom; -
FIG. 7 is an exploded view of a damping element; -
FIG. 8 side sectional view of the damping element wherein the first and second valves are both in the open position to allow pivotal movement of the flapper within the housing; -
FIG. 9 is a side sectional view of a damping element wherein a first valve is closed to restrict movement of a flapper in a first direction; -
FIG. 10 is a side sectional view of the damping element wherein a second valve is closed to restrict movement of the flapper in a second direction; -
FIG. 11 is a lower perspective view of a flapper element; -
FIG. 12 is a lower perspective view of the flapper element encased in a seal; and -
FIG. 13 is a partial upper perspective view of the flapper element and a seal. - Common reference numerals are used throughout the drawings and detailed description to indicate like elements.
- The detailed description set forth below is intended as a description of the presently preferred embodiment of the invention, and is not intended to represent the only form in which the present invention may be constructed or utilized. The description sets forth the functions and sequences of steps for constructing and operating the invention. It is to be understood, however, that the same or equivalent functions and sequences may be accomplished by different embodiments and that they are also intended to be encompassed within the scope of the invention.
- Referring now to the drawings, wherein the showings are for purposes of illustrating preferred embodiments of the present invention, and are not for purposes of limiting the same, there is depicted a
helmet suspension system 10 constructed in accordance with an embodiment of the present invention. Thehelmet suspension system 10 employs an innovative motion dampening mechanism configured to protect a wearer's head from violent movements. More specifically, the innovative motion dampening mechanism allows the wearer to slowly move thehelmet 12 in safe, controlled movements up and down, as well as side-to-side. However, the motion dampening mechanism is configured to substantially restrict rapid movements of the helmet 12 (i.e., prevent rapid accelerations of the helmet 12). -
FIG. 1 is an upper perspective view showing thesuspension system 10 integrated with thehelmet 12. Thehelmet 12 may be anyhelmet 12 or protective device used for protecting a wearer's head, particularly during motorsports, such as auto-racing, motorcycle racing, snowmobile racing, boat racing, piloting, etc., although it is contemplated that thesuspension system 10 may be integrated into helmets used in football, hockey, lacrosse, bicycling, and other sports known by those skilled in the art. Atrack housing 14 is connected to thehelmet 12 and preferably conforms to the external contour of thehelmet 12 and extends around the periphery of a lower end portion of the helmet 12 (i.e., adjacent the opening of thehelmet 12 through which the user inserts his head to wear the helmet 12). Thetrack housing 14 may be attached to thehelmet 12 via nails, rivets, adhesives or other mechanical fasteners known in the art, or alternatively, the track housing may be integrally formed into the body of thehelmet 12. In this regard, thetrack housing 14 may be retro-fit onto an existinghelmet 12 or integrated into the design of a newly manufacturedhelmet 12. - According to one embodiment, the
track housing 14 is generally C-shaped and defines aninner track channel 16. Atrack insert 18 is disposed within thetrack channel 16 and is configured to move within thechannel 16 as the wearer moves his head while wearing thehelmet 12. Thetrack housing 14 serves as a “guide” which allows for movement of thefirst track insert 18 along a fixed track. In this regard, thetrack insert 18 may translate, pivot, or rotate within thechannel 16. - The
track insert 18 is preferably captured within thechannel 16 to remain within thechannel 16 during use of thehelmet 12. Thus, thechannel 16 andfirst track insert 18 are sized and configured to withstand large forces which may be generated during usage of thehelmet 12, as described in more detail below. - The
track insert 18 is connected to anarm 20 which includes afirst end portion 22 and asecond end portion 24, with thefirst end portion 22 being connected to thetrack insert 18. According to one embodiment, thefirst end portion 22 defines a rounded segment having anaperture 21 extending therethrough to facilitate connection to the track insert 18 (seeFIG. 3 ). Thetrack insert 18 may also be comprised of twoinsert portions track insert 18. Eachinsert portion respective aperture aperture 21 formed within thearm 20 and amechanical fastener 25 may be inserted through theapertures arm 20 to theinsert portions - According to one embodiment, the
track insert 18 is connected to a restriction member orstopper 15, which may be rigid and include one ormore restriction channels 17 formed therein to restrict the freedom of movement of thetrack insert 18 within thetrack channel 16. Thetrack insert 18 may be connected to therestriction member 15 by aligning theapertures restriction channel 17 and inserting themechanical fastener 25 therethrough. Those skilled in the art will appreciate that althoughFIGS. 2-3 show only onerestriction member 15, it is contemplated that more than onerestriction member 15 may be employed to connect with all of the track inserts 18 of ahelmet suspension system 10. - The
channel 16 may be configured to define an opening width, “O”(seeFIG. 4 ) and a maximum inner width, “M” to allow theinsert 18 to easily move within thechannel 16, while at the same time maintaining theinsert 18 therein. Theinsert 18 may define a diameter or outer dimension that is larger than the opening width O and smaller than the maximum inner width M to allow theinsert 18 to remain in thechannel 16. Furthermore, the axle 26 may define a length that is also longer than the opening width O and smaller than the maximum inner width M to capture the axle 26 within thechannel 16. - The
insert 18 andfirst end portion 22 of thearm 20 may be placed within thechannel 16 during construction or assembly of thesystem 10. Along these lines, thetrack housing 14 may be comprised of several pieces or sections which are connected to each other during assembly. Theinsert 18 andarm 20 may be disposed within thechannel 16 during the assembly of thetrack housing 14. - As will be described in more detail below, the
second end portion 24 of thearm 20 may be connected to a substantially stationary surface. Therefore, as thehelmet 12 is moved in response to movements of the wearer's head,arm 20 pivots and theinsert 18 moves along thetrack channel 16. - Referring now to
FIG. 7 , there is shown adamper assembly 27, which includes thearm 20 and a dampingmechanism 28 connected to thesecond end portion 24 of thearm 20. Thesecond end portion 24 of thefirst arm 20 is connected to a shaft 30 (seeFIGS. 7-10 ) that is rotatable within the dampingmechanism 28 as thearm 20 pivots during movement of theinsert 18 within thechannel 16. The dampingmechanism 28 is configured to restrict quick rotational of theshaft 30, while allowing slow rotations of theshaft 30. - The damping
mechanism 28 includes adamper housing 32 and adamper cap 35 collectively defining aninner chamber 34. Aflapper 36 is connected to theshaft 30 and is moveable within theinner chamber 34. Theflapper 36 may be of two-piece construction and include afirst flapper body 38 and asecond flapper body 40 that are connected to each other and theshaft 30, as shown inFIG. 11 . The first andsecond flapper bodies shaft 30 by a pair ofmechanical fasteners 42 which are inserted through holes formed within the first andsecond flapper bodies shaft 30. - Referring now specifically to
FIGS. 8-10 , theflapper 36 divides theinner chamber 34 into first andsecond chamber portions flapper 36 is substantially complimentary to the cross-sectional shape of thedamper housing 32. The outer periphery of theflapper 36 also includes aseal 46 to create fluid-tight engagement between theflapper 36 and thedamper housing 32. In this regard, theflapper 36 may be molded within a sealing material, such as rubber, to form theseal 46 about theflapper 36. - The
flapper 36 additionally includes an opening 48 (seeFIGS. 11 and 12 ) extending therethrough to allow for fluid communication between the first andsecond chamber portions opening 48 may be collectively formed by separate openings formed within each of theflapper bodies bodies - Referring now to
FIG. 13 , avalve 50 may be connected to theflapper 36 to control fluid communication through theopening 48 between the first andsecond chamber portions valve 50 is moveable relative to theflapper 36 between an open position, wherein fluid may flow through theopening 48 between the first andsecond chamber portions valve 50 effectively closes theopening 48 to substantially restrict or prevent fluid from communication between the first andsecond chamber portions opening 48. - In the embodiment depicted in the drawings, the
valve 50 includes afirst valve body 50 a and asecond valve body 50 b disposed on opposed sides of theflapper 36. Thefirst valve body 50 a is disposed adjacent thefirst flapper body 38, while thesecond valve body 50 b is disposed adjacent thesecond flapper body 40. A valve seal 52 (seeFIGS. 12 and 13 ) is disposed within theopening 48 and thevalve bodies valve seal 52 when they are in the closed position to prevent fluid communication through theopening 48. -
FIG. 13 only shows thesecond valve body 50 b to illustrate the inside of thevalve 50, although it is understood that in a preferred embodiment, thevalve 50 includes both first andsecond valve bodies FIGS. 8-10 . - According to one embodiment, the
valve bodies valve 50 may include a pair ofsprings 54 connected to respective ones of thevalve bodies valve bodies - The
inner chamber 34 of each dampingmechanism 28 is filled with a damping fluid, which may be a liquid or gas. Along these lines, thedamper cap 35 may include anopening 37 through which the damping fluid may be inserted into theinner chamber 34. Aplug 39 andseal 41 may be used to fluidly close theopening 37 once the fluid is inserted within theinner chamber 34. Theplug 39 may define external threads which cooperate with internal threads formed within theopening 37 to effectuate engagement between theplug 39 and thedamper cap 35. Along these lines, the engagement between theplug 39 anddamper cap 35 must also be tight enough to maintain the fluid seal and to withstand the hydraulic forces discussed in more detail below. In general, the movement of theflapper 36 within theinner chamber 34 creates a hydraulic force within theinner chamber 34, which is critical to the function of restricting sudden movements of thehelmet 12, while allowing slow and safe movements of thehelmet 12. - Referring now specifically to
FIGS. 8-10 , the movement of theflapper 36 within thedamper housing 32 will be described. As theflapper 36 moves within thedamper housing 32, the size of the first andsecond chamber portions flapper 36 moves in the direction identified byarrow 56 inFIG. 9 , the size of thefirst chamber portion 44 a decreases and the size of thesecond chamber portion 44 b increases. Thus, the fluid flows from thefirst chamber portion 44 a to thesecond chamber portion 44 b when theflapper 36 moves indirection 56. Conversely, when theflapper 36 moves in the direction identified byarrow 58 inFIG. 10 , the fluid flows from thesecond chamber portion 44 b to thefirst chamber portion 44 a. - However, in order for the fluid communication between the first and
second chamber portions second valve bodies second valve bodies second chamber portions flapper 36 in place. When theflapper 36 is locked in place, movement of thehelmet 12 is restricted to protect against dangerously quick movements. - As indicated above, both
valve bodies valve bodies valve bodies valve body valve bodies suspension system 10. If one of the biasing forces is not overcome, then the acceleration threshold has not been met (i.e., the motion of the user is safe). However, if the movement of the user's head causes the biasing force to be overcome (as described below), then the acceleration threshold has been exceeded, and thesystem 10 effectively restricts further movement of the user's head. -
FIG. 9 shows thefirst valve body 50 a in the closed position and thesecond valve body 50 b in the open position. In the configuration shown inFIG. 9 , theflapper 36 is being urged quickly in afirst direction 56, which creates a hydraulic pressure in thefirst chamber portion 44 a that is greater than the biasing force urging thefirst valve body 50 a toward the open position, which causes thefirst valve body 50 a to move into the closed position. In this regard, the hydraulic pressure exceeds the acceleration threshold. Therefore, fluid communication between the first andsecond chamber portions flapper 36 in place until the hydraulic force is reduced to a point below the acceleration threshold which allows thefirst valve body 50 a to move from the closed position toward the open position to effectuate fluid communication between the first andsecond chamber portions - Referring now to
FIG. 10 , theflapper 36 is being urged in asecond direction 58 which generates a hydraulic force in thesecond chamber portion 44 b, which is greater in magnitude than the biasing force applied to thesecond valve body 50 b (i.e., greater than the acceleration threshold). Therefore, the hydraulic force causes thesecond valve body 50 b to move into the closed position to restrict fluid flow from thesecond chamber portion 44 b to thefirst chamber portion 44 a to effectively “lock” theflapper 36 in place. Theflapper 36 remains locked until the hydraulic force created by theflapper 36 decreases below the acceleration threshold to allow thesecond valve body 50 b to move from the closed position toward the open position, which thereby allows fluid to flow from thesecond chamber portion 44 b to thefirst chamber portion 44 a. - Thus, in the exemplary embodiment, the acceleration threshold is directly correlated to the biasing force created by the
springs 54 connected to thevalve bodies damper 28. In this regard, the exemplary embodiment is a hydraulic-type regulation system. However, it is contemplated that other regulation systems may be implemented into thesuspension system 10 without departing from the spirit and scope of the present invention. For instance, the system may by an electro-mechanical regulation system, which may employ a series of pressure sensors and mechanical suspension devices, which may be “locked” if the pressure sensors detect movement of the helmet above or below the acceleration threshold. - It is also contemplated that the acceleration threshold may be adjusted or modified if desired by the user. For instance, with regard to the exemplary embodiment, the acceleration threshold may be adjusted by modifying the biasing force applied by the
spring 54. For instance, a dampingmechanism 28 having astronger spring 54 may be swapped out for a dampingmechanism 28 having aweaker spring 54 in order to increase the acceleration threshold. Furthermore, with regard to the electro-mechanical regulation system mentioned above, the acceleration threshold may be programmed into the unit, such that the mechanical suspension devices may lock up only in response to a higher force. - Referring now back to
FIG. 7 , the movement of theflapper 36 is correlated to the movement of thehelmet 12 via the interconnection of theflapper 36 to thehelmet 12. According to one embodiment, the flapper is connected to thehelmet 12 via theshaft 30, acoupler 60 and ascrew 62 which connects thecoupler 60 to thefirst arm 20. Theshaft 30 is sized and configured to seat within arecess 64 formed within thecoupler 60. An adhesive may be disposed within the recess to enhance the engagement between thecoupler 60 and theshaft 30. Furthermore, theshaft 30 andrecess 64 may be sized to enhance engagement therebetween, particularly in view of the rotational forces applied to theshaft 30 andrecess 64. Along these lines, theexemplary shaft 30 andrecess 64 define complimentary hexagonal configurations, which facilitate the transfer of rotational force between theshaft 30 andcoupler 60. - The
coupler 60 is additionally secured to thefirst arm 20 by inserting anend portion 66 of thecoupler 60 through anopening 68 formed within thefirst arm 20. In the exemplary embodiment shown inFIG. 7 , theend portion 66 and theopening 68 define complimentary quadrangular configurations, which facilitate communication of rotational forces between thefirst arm 20 and thecoupler 60. Furthermore, thescrew 62 further connects thecoupler 60 to thefirst arm 20. Along theses lines, thescrew 62 includes ahead portion 70 having arecess 72 formed therein that is sized and configured to be complimentary to theend portion 66 of thecoupler 60. In this regard, theend portion 66 is at least partially received within therecess 72. In addition, theend portion 66 includes an internally threaded aperture (not shown) which engages with the externally threadedshaft 74 to tighten thescrew 62 to thecoupler 60. - Referring now back to
FIGS. 1 and 2 , it is contemplated that thehelmet suspension system 10 may include a plurality ofdamper assemblies 27, each having a dampingmechanism 28,arm 20 andtrack insert 18. By having a plurality ofassemblies 27, it is contemplated that thehelmet 12 may be effectively “locked” (i.e., movement of the helmet relative to thedamper assemblies 27 is substantially restricted). If only onedamper assembly 27 is used, it may be possible for thehelmet 12 to pivot or move about thetrack insert 18 when the dampingmechanism 28 is locked. Thus, by employing a plurality ofdamper assemblies 27, movement of thehelmet 12 is effectively restricted when thedamper assemblies 27 are locked. - In the exemplary embodiments depicted in
FIGS. 2 and 3 , thehelmet suspension system 10 includes fourdamper assemblies 27. Eachdamper assembly 27 includes atrack insert 18 disposed within thetrack channel 16 and arespective arm 20 connected to thetrack insert 18. Eachdamper assembly 27 further includes a dampingmechanism 28, as described in more detail above, connected to arespective arm 20. - According to one embodiment, a pair of damping
mechanisms 28 are connected to acommon base member 76. Thebase member 76 may be mounted to a shoulder pad of a driver suit, or to a surface of the vehicle. For instance, in auto racing, the cars may be outfitted with protective structures near the head, neck or shoulders of the driver to which thebase member 76 may be mounted. If thesuspension system 12 is being used in connection with a football helmet or hockey helmet, thebase member 76 may be mounted to a shoulder pad or other protective article worn by the wearer. - Each damping
mechanism 28 may include a mountingaperture 78 through which amechanical fastener 80, such as a screw, rivet, or the like, may be inserted. Themechanical fastener 80 may also be inserted through an aperture formed within thebase member 76 for connecting thebase member 76 to the dampingmechanism 28. A double-washer 82 may also be used to join a pair of dampingmechanisms 28. More specifically, the double-washer 82 may include a pair of apertures which are aligned with the mountingapertures 78 of a pair of dampingmechanisms 28 such that themechanical fasteners 80 may be advanced through the double-washer 82 before insertion into the mountingapertures 78. - In use, the
suspension system 10 may be used to protect thehelmet 12 from rapid acceleration/deceleration. - The above description is given by way of example, and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the invention disclosed herein. Further, the various features of the embodiments disclosed herein can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combinations described herein. Thus, the scope of the claims is not to be limited by the illustrated embodiments.
Claims (20)
1. A helmet suspension system configured for use with a helmet to mitigate large accelerations of the helmet relative to the wearer's body, the helmet suspension system comprising:
a track housing connectable to the helmet and defining a track channel;
a first track insert disposed within and moveable within the track channel;
a first arm having a first end portion and a second end portion, the first end portion being connected to the first track insert, the first arm being moveable relative to the track housing as the first track insert moves within the track channel; and
a first damper moveably connected to the second end portion of the first arm, the first damper being configured to define an acceleration threshold of the second end portion relative to the first damper and to allow movement of the first arm relative to the first damper when the motion of the first arm is below the acceleration threshold and restrict movement of the first arm relative to the first damper when the motion is above the acceleration threshold.
2. The helmet suspension system recited in claim 1 , wherein the track housing is configured to define a closed loop.
3. The helmet suspension system recited in claim 1 , wherein the first track insert is a roller configured to roll within the track channel.
4. The helmet suspension system recited in claim 3 , wherein the roller is formed from a rubber material.
5. The helmet suspension system recited in claim 1 further comprising a stopper disposed within the track channel and configured to limit movement of the first track insert within the track channel.
6. The helmet suspension system recited in claim 1 , further comprising:
a second track insert disposed within and moveable within the track channel;
a second arm having a first end portion and a second end portion, the first end portion being connected to the second track insert, the second arm being moveable relative to the track housing as the second track insert moves within the track channel; and
a second damper moveably connected to the second end portion of the second arm, the second damper being configured to define an acceleration threshold of the second end portion relative to the second damper and to allow movement of the second arm relative to the second damper when the motion of the second arm is below the acceleration threshold and restrict movement of the second arm relative to the second damper when the motion is above the acceleration threshold.
7. The helmet suspension system recited in claim 6 , further comprising a damper base connected to the first damper and the second damper
8. The helmet suspension system recited in claim 6 , further comprising:
a third track insert disposed within and moveable within the track channel;
a third arm having a first end portion and a second end portion, the first end portion being connected to the third track insert, the third arm being moveable relative to the track housing as the third track insert moves within the track channel;
a third damper moveably connected to the second end portion of the third arm, the third damper being configured to define an acceleration threshold of the second end portion relative to the third damper and to allow movement of the third arm relative to the third damper when the motion of the third arm is below the acceleration threshold and restrict movement of the third arm relative to the third damper when the motion is above the acceleration threshold;
a fourth track insert disposed within and moveable within the track channel;
a fourth arm having a first end portion and a second end portion, the first end portion being connected to the fourth track insert, the fourth arm being moveable relative to the track housing as the first track insert moves within the track channel;
a fourth damper moveably connected to the second end portion of the fourth arm, the fourth damper being configured to define an acceleration threshold of the second end portion relative to the fourth damper and to allow movement of the fourth arm relative to the fourth damper when the motion of the fourth arm is below the acceleration threshold and restrict movement of the fourth arm relative to the fourth damper when the motion is above the acceleration threshold.
9. The helmet suspension system recited in claim 1 , wherein the first damper includes:
a damper housing defining an inner chamber;
a flapper disposed within and moveable within the inner chamber, the flapper dividing the inner chamber into a first chamber portion and a second chamber portion, the flapper further defining a flapper opening through which the first and second chamber portions are fluidly connectable; and
a valve connected to the flapper to control fluid communication between the first and second chamber portions via the flapper opening.
10. The helmet suspension system recited in claim 9 , wherein the valve is moveable relative to the flapper between an open position wherein the valve is positioned to allow fluid flow through the flapper opening between the first and second chambers and a closed position wherein the valve substantially blocks fluid flow through the flapper opening between the first and second chamber portions.
11. The helmet suspension system recited in claim 10 , wherein the valve is biased toward the open position.
12. A helmet suspension system comprising:
a helmet wearable on a user's head;
a track housing connectable to the helmet and defining a track channel;
a first track insert disposed within and moveable within the track channel;
a first arm having a first end portion and a second end portion, the first end portion being connected to the first track insert, the first arm being moveable relative to the track housing as the first track insert moves within the track channel; and
a first damper moveably connected to the second end portion of the first arm, the first damper being configured to define an acceleration threshold of the second end portion relative to the first damper and to allow movement of the first arm relative to the first damper when the motion of the first arm is below the acceleration threshold and restrict movement of the first arm relative to the first damper when the motion is above the acceleration threshold.
13. The helmet suspension system recited in claim 12 , wherein the first damper includes:
a damper housing defining an inner chamber;
a flapper disposed within and moveable within the inner chamber, the flapper dividing the inner chamber into a first chamber portion and a second chamber portion, the flapper further defining a flapper opening through which the first and second chamber portions are fluidly connectable; and
a valve connected to the flapper to control fluid communication between the first and second chamber portions via the flapper opening.
14. The helmet suspension system recited in claim 13 , wherein the valve is moveable relative to the flapper between an open position wherein the valve is positioned to allow fluid flow through the flapper opening between the first and second chambers and a closed position wherein the valve substantially blocks fluid flow through the flapper opening between the first and second chamber portions.
15. The helmet suspension system recited in claim 14 , wherein the valve is biased toward the open position.
16. The helmet suspension system recited in claim 12 , further comprising:
a second track insert disposed within and moveable within the track channel;
a second arm having a first end portion and a second end portion, the first end portion being connected to the second track insert, the second arm being moveable relative to the track housing as the second track insert moves within the track channel; and
a second damper moveably connected to the second end portion of the second arm, the second damper being configured to define an acceleration threshold of the second end portion relative to the second damper and to allow movement of the second arm relative to the second damper when the motion of the second arm is below the acceleration threshold and restrict movement of the second arm relative to the second damper when the motion is above the acceleration threshold.
17. The helmet suspension system recited in claim 16 , further comprising a damper base connected to the first damper and the second damper
18. The helmet suspension system recited in claim 16 , further comprising:
a third track insert disposed within and moveable within the track channel;
a third arm having a first end portion and a second end portion, the first end portion being connected to the third track insert, the third arm being moveable relative to the track housing as the third track insert moves within the track channel;
a third damper moveably connected to the second end portion of the third arm, the third damper being configured to define an acceleration threshold of the second end portion relative to the third damper and to allow movement of the third arm relative to the third damper when the motion of the third arm is below the acceleration threshold and restrict movement of the third arm relative to the third damper when the motion is above the acceleration threshold;
a fourth track insert disposed within and moveable within the track channel;
a fourth arm having a first end portion and a second end portion, the first end portion being connected to the fourth track insert, the fourth arm being moveable relative to the track housing as the first track insert moves within the track channel;
a fourth damper moveably connected to the second end portion of the fourth arm, the fourth damper being configured to define an acceleration threshold of the second end portion relative to the fourth damper and to allow movement of the fourth arm relative to the fourth damper when the motion of the fourth arm is below the acceleration threshold and restrict movement of the fourth arm relative to the fourth damper when the motion is above the acceleration threshold.
19. The helmet suspension system recited in claim 12 , wherein the track housing is configured to define a closed loop.
20. The helmet suspension system recited in claim 12 , wherein the first track insert is a roller configured to roll within the track channel.
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US15/231,416 US20160345650A1 (en) | 2012-05-17 | 2016-08-08 | Helmet suspension system |
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Also Published As
Publication number | Publication date |
---|---|
US8590064B1 (en) | 2013-11-26 |
EP2849595A1 (en) | 2015-03-25 |
EP2849595A4 (en) | 2015-07-08 |
US20160345650A1 (en) | 2016-12-01 |
CN104519764B (en) | 2017-07-04 |
CN104519764A (en) | 2015-04-15 |
US20140047622A1 (en) | 2014-02-20 |
US20130305436A1 (en) | 2013-11-21 |
US8914916B2 (en) | 2014-12-23 |
WO2013173225A1 (en) | 2013-11-21 |
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