Abstract:
A foldable attachment clip assembly including a receiving body portion having a hollow interior and a slotted opening extending along the length which receives and retains a crossbar of a stirrup connection portion. The crossbar of the stirrup connection portion is adapted for press-fit insertion through the relatively narrow width slotted opening which opens into a wider diameter retention pocket at the interior of the receiving body portion. Following attachment, the receiving body portion and the stirrup connection portion can rotate relative to one another about an axis defined generally by the crossbar within the retention pocket. Upon application of a tensioning force, the clip is substantially straightened and the receiving body pulls tight against the crossbar in a secure relation.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This non-provisional application claims the benefit of, and priority from, U.S. Provisional Applications 61/256,555 filed Oct. 30, 2009 and 61/360,538 filed Jul. 1, 2010, each of which is hereby incorporated by reference in its entirety as if fully set forth herein. 
     
    
     TECHNICAL FIELD 
       [0002]    The present invention relates generally to snap-together clips for operatively joining straps or similar structures and more particularly to a clip having a stirrup portion and an engageable hook portion which snaps around the crossbar of the stirrup portion. In the snapped-together state, the hook portion is rotatable at least partially about the stirrup crossbar to adopt a folded structure. The hook portion and/or the stirrup portion may include one or more eyelets for acceptance and retention of strap members for tensioning adjustment. 
       BACKGROUND OF THE INVENTION 
       [0003]    Clips for connecting a strap to a second strap or other structure are well known to those of skill in the art. By way of example only, such clips may be used for fastening backpacks, luggage or other articles. 
         [0004]    One prior clip arrangement incorporates a male member with a pair of laterally disposed legs that snap in locking relation within a relatively flat female body. In such a construction portions of the snap legs typically project through openings in the lateral sides of the female body in locking relation. The locking relation is disengaged by a user pressing inwardly against the lateral sides of the body to force the snap legs to the interior while applying a separating tensioning force. This permits the legs to be pulled outwardly from the body. While such prior structures are suitable for many applications, one deficiency is that the clip cannot bend in the assembled condition. Thus, a user&#39;s movement may be restricted. Moreover, when substantial tension is applied, that tension must be carried by the snap legs and the female body, thereby requiring the use of materials of enhanced thickness and/or strength in those components. 
         [0005]    Another prior clip arrangement incorporates a relatively large diameter “J” hook with a leaf spring closure. The “J” hook can snap loosely through a connection eyelet. However, in the connected relation there can be substantial lateral relative movement between the “J” hook and the eyelet. Moreover, in the event that the leaf spring closure is damaged, the “J” hook will tend to become disengaged due to the large entrance opening which tends to be much larger than the connection eyelet. 
         [0006]    In light of the above, it would be desirable to provide an attachment clip which permits relative rotation of the components in the assembled condition and which also maintains the snapped-together relationship in tensioned and untensioned states. 
       SUMMARY OF THE INVENTION 
       [0007]    The present invention offers advantages and alternatives over the prior art by providing a foldable attachment clip assembly including a receiving body portion having a hollow interior and a slotted opening extending along the length which receives and retains a crossbar of a stirrup connection portion. The crossbar of the stirrup connection portion is adapted for press-fit insertion through the relatively narrow width slotted opening which opens into a wider diameter retention pocket at the interior of the body portion. Following attachment, the receiving body portion and the stirrup connection portion can rotate relative to one another about an axis defined generally by the crossbar within the retention pocket. Upon application of a tensioning force, the clip is substantially straightened and the receiving body pulls tight against the crossbar in a secure relation. 
         [0008]    In accordance with one exemplary aspect, the present invention provides a foldable attachment clip assembly including a stirrup member having a crossbar oriented between opposing lateral legs. The clip assembly further includes a hook member including a receiving body adapted to receive the crossbar and an eyelet extension adapted to receive a strap element extending away from the receiving body. The receiving body has a hollow interior with a slot opening extending along the length of the receiving body. The slot opening has a height dimension which is less than or equal to the height dimension of the crossbar. The slot opening defines an insertion path across a wall of the receiving body adapted for press-fit insertion of the crossbar to a portion of the hollow interior defining a retention pocket adapted to receive the crossbar. The retention pocket has an effective diameter which is greater than the effective diameter of the crossbar such that the hook member can rotate about the crossbar following insertion of the crossbar. 
         [0009]    In accordance with another exemplary aspect, the present invention provides a foldable attachment clip assembly including a stirrup member having a crossbar extending between a pair of enhanced diameter end walls. The crossbar includes flattened upper and lower surfaces with a height dimension between the upper and lower surfaces. The stirrup member further includes a first eyelet extension having at least one eyelet disposed at a position remote from the crossbar between a rear cross member and a barrier element disposed in opposing relation to the crossbar. The clip assembly includes a hook member having a substantially cylindrical receiving body adapted to receive the crossbar and a second eyelet extension extending away from the receiving body. The receiving body has a hollow interior with a slot opening extending along the length of the receiving body. The slot opening has a pair of opposing planar boundary surfaces with the distance between the boundary surfaces defining the height dimension of the slot opening which is less than or equal to the height dimension of the crossbar. The slot opening defines an insertion path across a wall of the receiving body adapted for press-fit insertion of the crossbar to a portion of the hollow interior defining a retention pocket adapted to receive the crossbar. The retention pocket has an effective diameter which is greater than the effective diameter of the crossbar such that the hook member can rotate about the crossbar following insertion of the crossbar. The second eyelet extension includes at least one eyelet adapted to receive a strap element. 
         [0010]    In accordance with another exemplary aspect, the present invention provides a foldable attachment clip assembly including a stirrup member having a crossbar extending between opposing lateral legs of the stirrup member, the crossbar having flattened upper and lower surfaces with a height dimension between the upper and lower surfaces. The stirrup member further includes a first eyelet extension having at least one eyelet disposed at a position remote from the crossbar between a rear cross member and a curved barrier element disposed in opposing relation to the crossbar. The clip assembly includes a hook member having a substantially cylindrical receiving body adapted to receive the crossbar and a second eyelet extension extending away from the receiving body. The receiving body has a generally “C” shaped cross-sectional profile with a hollow interior and a slot opening extending along the length of the receiving body. The slot opening has a pair of opposing planar boundary surfaces with the distance between the boundary surfaces defining the height dimension of the slot opening which is less than or equal to the height dimension of the crossbar. The slot opening defines an insertion path across a wall of the receiving body adapted for press-fit insertion of the crossbar to a portion of the hollow interior defining a retention pocket adapted to receive the crossbar. The retention pocket has an effective diameter which is greater than the effective diameter of the crossbar such that the hook member can rotate about the crossbar following insertion of the crossbar. The length of the receiving body is substantially equivalent to the distance between the enhanced diameter end walls to block relative axial movement between the receiving body and the crossbar. The first eyelet extension and/or the second eyelet extension includes a first pass through opening and at least a second pass through opening adapted to receive an adjustment strap. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0011]      FIG. 1  is a schematic view of one embodiment of a foldable attachment clip assembly in accordance with the present invention; 
           [0012]      FIG. 2  is a cross-sectional view of the foldable attachment clip assembly of  FIG. 1  illustrating a male stirrup portion and a female hook portion in aligned relation for engagement; 
           [0013]      FIG. 3  is a cross-sectional view of the foldable attachment clip assembly of  FIG. 1  illustrating the male stirrup portion and the female hook portion in engaged relation with the components aligned for insertion and withdrawal; 
           [0014]      FIG. 4  is a cross-sectional view similar to  FIG. 3  illustrating the male stirrup portion and the female hook portion in engaged relation with the components rotated to a substantially straight condition consistent with tensioning; 
           [0015]      FIG. 5  is a schematic view of another embodiment of a foldable attachment clip assembly in accordance with the present invention; 
           [0016]      FIG. 6  is a cross-sectional view of the attachment clip assembly of  FIG. 5  illustrating the male stirrup portion and the female hook portion in engaged relation with attached strap elements and with the components rotated to a substantially straight condition consistent with tensioning; 
           [0017]      FIG. 7  is a cross-sectional view similar to  FIG. 3  illustrating the male stirrup portion and the female hook portion in engaged relation and rotated to a folded condition while maintaining engagement; 
           [0018]      FIG. 8  is a schematic view of another embodiment of a foldable attachment clip assembly in accordance with the present invention; 
           [0019]      FIG. 9  is a cross-sectional view of the attachment clip assembly of  FIG. 8  illustrating the male stirrup portion and the female hook portion in engaged relation with attached strap elements and with the components rotated to a substantially straight condition consistent with tensioning; and 
           [0020]      FIG. 10  is a cross-sectional view similar to  FIG. 7  illustrating the male stirrup portion and the female hook portion in engaged relation and rotated to a folded condition to effect disengagement of the male stirrup portion from the female hook portion; 
           [0021]      FIG. 11  is a schematic view of another embodiment of a foldable attachment clip assembly in accordance with the present invention; 
           [0022]      FIG. 12  is a cross-sectional view of the attachment clip assembly of  FIG. 11  illustrating the male stirrup portion and the female hook portion in engaged relation with attached strap elements and with the components rotated to a substantially straight condition consistent with tensioning; and 
           [0023]      FIG. 13  is a cross-sectional view similar to  FIG. 10  illustrating the male stirrup portion and the female hook portion in engaged relation and rotated to a folded condition to effect disengagement of the male stirrup portion from the female hook portion; 
       
    
    
       [0024]    Before the exemplary embodiments of the invention are explained in detail, it is to be understood that the invention is in no way limited in its application or construction to the details and the arrangements of the components set forth in the following description or illustrated in the drawings. Rather, the invention is capable of other embodiments and being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein are for purposes of description only and should not be regarded as limiting. The use herein of terms such as “including” and “comprising” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items and equivalents thereof. 
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0025]    Exemplary embodiments of the invention will now be described in reference to the drawings, wherein like reference numerals designate like elements in the various views. Referring now in particular to  FIGS. 1-4 , a clip assembly  100  is illustrated. As shown, the clip assembly  100  includes a hook member  110  and a cooperating stirrup member  120  which are adapted to fit in snap relation relative to one another in a manner as best seen in  FIG. 3 . Upon engagement, the hook member  110  and the stirrup member  120  may articulate in a hinging manner relative to one another while maintaining an engaged relation. Moreover, upon the application of tensioning forces as illustrated by force arrows in  FIG. 4 , the stirrup member  120  assumes a highly stable seated relation within the hook member  110 . 
         [0026]    In the illustrated exemplary embodiment, the hook member  110  includes a receiving body  122  having a generally hollow interior adapted to receive and retain a portion of the stirrup member  120  in a manner as will be described further hereinafter. In the illustrated exemplary construction, the receiving body  122  is generally cylindrical in the form of a circular barrel with an enhanced outer diameter at its center relative to its ends. However, other configurations including, without limitation, straight cylinders, elongate polygonal cylinder structures or the like may also be used. 
         [0027]    As best seen in  FIG. 2 , the receiving body  122  has a generally “C” shaped cross-section having a slot opening  124  including a pair of substantially flat boundary surfaces  126 ,  128  disposed in opposing relation to one another. The slot opening  124  opens into an enhanced diameter retention pocket  130 . While the retention pocket  130  is illustrated as having a generally semicircular profile, other configurations including ovals, polygonal surfaces and the like may be used if desired. In the illustrated exemplary arrangement, both the slot opening  124  and the retention pocket  130  extend substantially along the length of the receiving body  122  and the ends of the receiving body are open. 
         [0028]    As shown, in the exemplary arrangement, an eyelet extension  132  extends away from one edge of the slot opening  124  in a plane transverse to the slot opening  124 . The eyelet extension includes at least one pass through opening  134  ( FIG. 1 ) for threading a strap element  136  such as cord material, rope, webbing or the like. In the exemplary construction, the eyelet extension  132  is oriented transverse to the slot opening  124  such that the application of a tensioning force will cause the receiving body  122  to rotate away from the insertion condition ( FIG. 3 ) and to a locked condition ( FIG. 4 ). In the illustrated construction, the eyelet extension  132  is in a slightly forward angled orientation relative to the slot opening  124  such that the eyelet extension  132  projects generally away from the base of the retention pocket  130 . Thus, the combination of the receiving body  122  and the eyelet extension  132  defines a cross-sectional profile generally in the form of a shepherd&#39;s crook. By way of example only, and not limitation, the hook member  110  may be formed as a single piece from polymeric structural materials such as nylon, polyester, polypropylene, ABS or the like using injection molding or other suitable formation practices as may be known to those of skill in the art. 
         [0029]    As noted previously, the slot opening  124  is adapted to receive a portion of the stirrup member  120  to be held rotatably within the retention pocket  130 . In the illustrated exemplary embodiment the stirrup member  120  includes a crossbar designated generally as  140 . The crossbar  140  is oriented with its length dimension extending between opposing end walls  142  ( FIG. 1 ). As shown, the end walls  142  are of enhanced diameter relative to the crossbar  140 . In the illustrated exemplary construction, the crossbar  140  may incorporate generally flattened upper and lower surfaces. As shown, the crossbar  140  also may include a rounded leading edge  146  and a rounded trailing edge  148  ( FIG. 2 ) to facilitate insertion into the slot opening and subsequent rotation within the retention pocket  130  following assembly. In the illustrated exemplary construction the width dimension of the crossbar  140  extending between the leading edge  146  and the trailing edge  148  is greater than the height dimension extending between the flattened upper and lower surfaces. 
         [0030]    In the exemplary construction, the stirrup member  120  includes an eyelet extension  150  defining a tethering connection extending away from the crossbar  140  for retention of a strap element  152  such as webbing, cord material, rope or the like. In the illustrated embodiment, the eyelet extension  150  is substantially co-planar with the crossbar  140  and includes a pair of lateral legs  151  and a rear cross member  153  extending between the lateral legs  151 . However, other configurations may be used if desired. In practice, the strap element  152  may be secured to a base panel  154  such as a fabric substrate or the like such that the stirrup member  120  is anchored in a floating relation relative to the base panel  154 . The strap element  152  may be secured to the base panel  154  by techniques such as stitching, adhesive bonding or other techniques as may be desired t act as a tether. By way of example only, and not limitation, the base panel  154  may be a portion of a backpack, clothing article, or other structure to be closed by the clip assembly  100 . 
         [0031]    As shown, the eyelet extension  150  may include at least one tethering eyelet  160  disposed in spaced-apart relation from the crossbar  140  for acceptance of the strap element  152 . In the illustrated configuration, the tethering eyelet  160  is separated from the crossbar  140  by a barrier  162  which extends between the lateral legs  151  at a position between the crossbar  140  and the rear cross member  153 . As shown, the barrier  162  may be curved to substantially match the curvature at the outer surface of the receiving body  122  if desired such that the barrier  162  defines a concave profile opposing the crossbar and cradles the receiving body  122  during relative rotation. Of course, the barrier  162  may also be substantially straight if desired. By way of example only, and not limitation, the stirrup member  120  may be formed as a single piece from polymeric structural materials such as nylon, polyester, polypropylene, ABS or the like using injection molding or other suitable formation practices as may be known to those of skill in the art. 
         [0032]    In the exemplary construction, the height dimension of the crossbar  140  extending between the flattened upper and lower surfaces substantially matches or is slightly greater than the height dimension of the slot opening  124 . During assembly, a user may orient the stirrup member  120  relative to the slot opening  124  such that the upper and lower surfaces of the crossbar  140  are substantially parallel to the corresponding boundary surfaces  126 ,  128  of the slot opening  124 . In this orientation, the leading edge  146  of the crossbar  140  may then be pressed into the slot opening  124 . As insertion proceeds, the slot opening  124  may be forced to flex open to a further extent to permit complete insertion of the crossbar  140 . Upon achieving completed insertion, the slot opening  124  may then spring back to its original condition. In the inserted condition, the crossbar  140  is then held within the retention pocket  130  which has a diameter larger than the crossbar  140  such that the crossbar  140  may rotate relatively freely within the retention pocket. 
         [0033]    In the illustrated exemplary construction, the length of the receiving body  122  may closely approximate the distance between the end walls  142 . As will be appreciated, by matching the length of the receiving body  122  to the distance between the end walls  142 , lateral sliding of the hook member relative to the stirrup member  120  may be reduced or eliminated. However, in a low tension or untensioned state, the receiving body  122  nonetheless is able to rotate about the crossbar  140 . Of course, it is also contemplated that the length of the receiving body  122  may be shorter than the distance between the end walls  142  if a degree of lateral sliding is desired. 
         [0034]    As illustrated through joint reference to  FIGS. 3 and 4 , upon the introduction of a tensioning force, the receiving body  122  may rotate about the crossbar  140  from the initial assembly position to a position wherein the boundary surfaces  126 ,  128  of the slot opening  124  become oriented substantially transverse to the flattened upper and lower surfaces of the crossbar  140 . In this orientation, the crossbar  140  is blocked against removal through the slot opening  124 . Moreover, the crossbar is pressed against the inner surface of the retention pocket in a stable manner. Upon the release of tension, free rotation may then be resumed. 
         [0035]    In the event that it is desired to disassemble the clip, the tensioning forces may be relieved and the receiving body  122  may be is rotated back to an orientation in which the boundary surfaces  126 ,  128  of the slot opening  124  are oriented substantially parallel to the flattened upper and lower surfaces of the crossbar. In this orientation, the crossbar may be pulled out of the receiving body  122  without undue force. 
         [0036]      FIGS. 5-7  illustrate a clip assembly  200  representing an alternative embodiment of the present invention wherein elements corresponding to those described previously are designated by like reference numerals within a 200 series. The exemplary clip assembly  200  may be formed from molded polymers or other materials as previously described. In the embodiment of  FIGS. 5-7 , the receiving body  222  of the hook member  210  engages the crossbar  240  of the stirrup member  220  in the same manner as previously described. In the engaged relation shown in  FIGS. 6 and 7 , the receiving body  222  is held between the end walls  242  and may rotate about the crossbar  240  relative to the eyelet extension  250 . 
         [0037]    In the illustrated exemplary construction, the eyelet extension  250  has a configuration substantially as described previously and may include at least one eyelet  260  disposed in spaced-apart relation from the crossbar  240  for acceptance of a strap element  252  which may be anchored to a base panel  254 . In the illustrated configuration, the eyelet  260  is separated from the crossbar  240  by the barrier  262  which extends between lateral legs  251  at a position between the crossbar  240  and the rear cross member  253 . As shown, the barrier  262  may be curved to substantially match the curvature at the outer surface of the receiving body  222  such that the barrier cradles the receiving body  222  during relative rotation. Of course, the barrier  262  may also be substantially straight if desired. 
         [0038]    As shown, in the exemplary embodiment of  FIGS. 5-7 , the hook member  210  includes an eyelet extension  232  having a forward pass through opening  234  and a rearward pass through opening  235 . A spacer  237  separates the forward pass through opening  234  and the rearward pass through opening  235 . As will be appreciated, the forward pass through opening  234  and the rearward pass through opening  235  are adapted to receive an adjustment strap  236  such as rope, cord, webbing or the like such that the adjustment strap is threaded around the spacer in a cinching arrangement such that the effective length of the strap element  236  may be lengthened or shortened as desired. As illustrated, in the exemplary configuration the eyelet extension  232  includes an upwardly angled distal wall  270  disposed in raised, sloped relation along a rear edge of the rearward pass through opening  235 . As will be appreciated, such an angled surface may facilitate threading and tensioning adjustment. Of course, virtually any other configuration for the eyelet extension which provides length adjustment may be used if desired. 
         [0039]    In practice, a user may orient the stirrup member  220  relative to the receiving body  222  such that the upper and lower surfaces of the crossbar  240  are substantially parallel to the corresponding boundary surfaces of the slot opening  224 . In this orientation, the leading edge of the crossbar  240  may then be pressed into the slot opening  224 . As insertion proceeds, the slot opening  224  may be forced to flex open to a further extent to permit complete insertion of the crossbar  240 . Upon achieving completed insertion, the slot opening  224  may then spring back to its original condition. The crossbar  240  is then held within the retention pocket  230  which has a diameter larger than the width dimension of the crossbar  240  such that the crossbar may rotate relatively freely within the retention pocket. 
         [0040]      FIGS. 8-10  illustrate a clip assembly  300  representing an alternative embodiment of the present invention wherein elements corresponding to those described previously are designated by like reference numerals within a 300 series. The exemplary clip assembly  300  may be formed from molded polymers or other materials as previously described. In the embodiment of  FIGS. 8-10 , the receiving body  322  is oriented such that the distal wall  370  projects generally in the same direction as the slot opening  324 . This may be contrasted to the embodiment illustrated in  FIGS. 5-7  wherein the distal wall projects generally in the opposite direction from the slot opening. As best seen in  FIG. 9 , in the illustrated embodiment, when the clip assembly  300  is in tension, the slot opening  324  normally projects outwardly away from the plane of the base panel  354 . Thus, when linear tension is applied, the crossbar  340  is seated against the side of the retention pocket  330 . 
         [0041]    Upon the application of an upward folding force away from the plane of the base panel  354 , the receiving body  322  rotates to a position in which the crossbar  340  is in alignment with the slot opening  324  ( FIG. 10 ). Such lifting rotation also causes the receiving body to be urged away from the crossbar  340  thereby increasing tension in the anchoring strap  352  holding the stirrup member in place relative to the base panel  354 . Accordingly, when the rotation progresses to the condition where the crossbar  340  is aligned with the slot opening  324 , the crossbar  340  will pop out of the receiving body  322  to relieve the applied forces thereby resulting in disengagement. As will be appreciated, such an arrangement permits a user to use a single hand to disengage the clip assembly  300  by lifting the distal wall  370  upwardly. Such one-handed disengagement may be desirable in some environments of use where a quick release is desired. 
         [0042]      FIGS. 11-13  illustrate a clip assembly  400  representing an alternative embodiment of the present invention wherein elements corresponding to those described previously are designated by like reference numerals within a 400 series. The exemplary clip assembly  400  may be formed from molded polymers or other materials as previously described. In the embodiment of  FIGS. 11-13 , the receiving body  422  is oriented such that the distal wall  470  projects generally in the same direction as the slot opening  424 . As best seen in  FIG. 12 , in the illustrated embodiment, when the clip assembly  400  is in tension, the slot opening  424  normally projects outwardly away from the plane of the base panel  454 . Thus, when linear tension is applied, the crossbar  440  is seated against the side of the retention pocket  430 . 
         [0043]    Upon the application of an upward folding force away from the plane of the base panel  454 , the receiving body  422  rotates to a position in which the crossbar  440  is in alignment with the slot opening  424  ( FIG. 13 ). Such lifting rotation also tensions the strap element  436  thereby introducing a force which urges the hook member  410  away from the stirrup member  420 . Accordingly, when the rotation progresses to the condition where the crossbar  440  is aligned with the slot opening  424 , the crossbar  440  will pop out of the receiving body  422  to relieve the applied forces thereby resulting in disengagement. As will be appreciated, such an arrangement permits a user to use a single hand to disengage the clip assembly  400  by lifting the distal wall  470  upwardly. Such one-handed disengagement may be desirable in some environments of use where a quick release is desired. 
         [0044]    As illustrated, in the exemplary embodiment of  FIGS. 11-13 , the stirrup member includes an eyelet extension  450  having a forward pass through opening  484  and a rearward pass through opening  485 . A spacer  487  separates the forward pass through opening and the rearward pass through opening. As will be appreciated, the forward pass through opening  484  and the rearward pass through opening  485  are adapted to receive an adjustment strap  452  such as rope, cord, webbing or the like such that the adjustment strap is threaded around the spacer in a cinching arrangement such that the effective length of the strap  452  may be lengthened or shortened as desired. As illustrated, in the exemplary configuration the eyelet extension  450  includes an upwardly angled distal wall  490  disposed in raised, sloped relation along a rear edge of the rearward pass through opening  485 . As will be appreciated, such an angled surface may facilitate threading and tensioning adjustment. Of course, virtually any other configuration for the eyelet extension which provides length adjustment may be used if desired. 
         [0045]    Of course, variations and modifications of the foregoing are within the scope of the present invention. Thus, it is to be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present invention. The embodiments described herein explain the best modes known for practicing the invention and will enable others skilled in the art to utilize the invention. The claims are to be construed to include alternative embodiments and equivalents to the extent permitted by the prior art. 
         [0046]    Various features of the invention are set forth in the following claims.