Rigid packet with a hinged lid

Abstract

A rigid hinge-lid packet ( 1 ) of prismatic shape, appearing substantially-triangular in section, comprises a container ( 10 ) surmounted by a lid ( 12 ), attached to the container ( 10 ) by way of a hinge ( 19 ) and pivotable between a position in which the packet is open and a position in which the packet is closed. The lid ( 12 ) of the packet ( 1 ) is retained in the closed position by locking elements ( 27 ) fashioned as a tongue ( 29 ), associated with one of the container ( 10 ) or lid ( 12 ), and a notch ( 30 ) formed in the other one of the container ( 10 ) or lid ( 12 ), insertable positively one into the other.

1 ) A rigid packet with a hinged lid, comprising a container ( 10 ), also a lid ( 12 ) attached pivotably to the container ( 10 ) along a hinge ( 19 ) and pivotable thus between a position in which the container is open and a position in which the container is closed, the closed packet appearing prismatic in shape and substantially triangular in section, characterized in that it comprises locking means ( 27 ) by which the lid ( 12 ) is retained in the closed position. 
   
   
       2 ) A packet as in  claim 1 , wherein the locking means ( 27 ) are positioned to coincide with an area, remote from the hinge ( 19 ), along which two side faces of the prism are joined. 
   
   
       3 ) A packet as in  claim 2 , wherein the locking means ( 27 ) are positioned on a front corner edge ( 26 ), establishing the area along which two side faces of the prism are joined. 
   
   
       4 ) A packet as in  claim 3 , wherein locking means ( 27 ) comprise an engagement member or tongue ( 28 ) operating between the container ( 10 ) and the lid ( 12 ). 
   
   
       5 ) A packet as in  claim 4 , wherein the engagement member ( 28 ) comprises a shaped portion ( 29 ) of the front corner edge ( 26 ) associated with the container ( 10 ), extending toward the lid ( 12 ) and insertable in a recess ( 30 ) afforded by the lid ( 12 ). 
   
   
       6 ) A packet as in  claim 4 , wherein the engagement member ( 28 ) comprises a shaped portion ( 29 ) of the front corner edge ( 26 ) associated with the lid ( 12 ), extending toward the container ( 10 ) and insertable in a recess ( 30 ) afforded by the container ( 10 ). 
   
   
       7 ) A packet as in  claim 6 , wherein the shaped portion ( 29 ) presents an outline substantially matched to the internal contour of the recess ( 30 ). 
   
   
       8 ) A packet as in  claim 7 , wherein the shaped portion ( 29 ) presents an outline substantially of dovetail appearance. 
   
   
       9 ) A packet as in  claim 3 , further comprising a frame ( 22 ) associated internally with the container ( 10 ), serving to engage and retain the lid ( 12 ) when the selfsame lid is in the closed position. 
   
   
       10 ) A packet as in  claim 9 , wherein locking means ( 27 ) comprise an engagement member ( 28 ) operating between the frame ( 22 ) and the lid ( 12 ). 
   
   
       11 ) A packet as in  claim 10 , wherein the engagement member ( 28 ) comprises a shaped portion ( 29 ) of the front corner edge ( 26 ) associated with the frame ( 22 ), extending toward the lid ( 12 ) and insertable in a recess ( 30 ) afforded by the container ( 10 ). 
   
   
       12 ) A packet as in  claim 10 , wherein the engagement member ( 28 ) comprises a shaped portion ( 29 ) of the front corner edge ( 26 ) associated with an internal insert ( 31 ) of the lid ( 12 ), extending toward the frame ( 22 ) and insertable in a recess ( 30 ) afforded by the frame ( 22 ). 
   
   
       13 ) A packet as in  claim 12 , wherein the shaped portion ( 29 ) presents an outline substantially matched to the internal contour of the recess ( 30 ). 
   
   
       14 ) A packet as in  claim 13 , wherein the shaped portion ( 29 ) presents an outline substantially of dovetail appearance. 
   
   
       15 ) A packet as in  claim 6 , fashioned from a flat diecut blank ( 32 ) of wrapping material appearing substantially rectangular in outline and presenting:
 three precreased fold areas ( 33 ) disposed mutually parallel and delimiting two panels ( 34 ) coinciding with the front ( 18 ) of the packet, one panel ( 35 ) coinciding with the back ( 17 ) of the packet, and one connecting panel ( 36 );   a transverse Vee cut ( 37 ) intersecting the three precreased fold areas ( 33 ) and coinciding with the open top end ( 11 ) of the container ( 10 ), by which the front wall ( 14 ) of the container ( 10 ) on the one hand is separated from the front wall ( 16 ) of the lid ( 12 ) on the other,   two crease lines ( 39 ) extending one from each end of the Vee cut ( 37 ), disposed transversely to the precreased areas ( 33 ) and functioning as a hinge ( 19 ) for the lid ( 12 );   two substantially triangular wings ( 40 ,  41 ) joined along one side to the blank ( 37 ) by way of relative crease lines ( 42 ) and coinciding respectively with the top ( 8 ) and the bottom ( 9 ) of the packet ( 1 ).   
   
   
       16 ) A packet as in  claim 15 , wherein the blank ( 32 ) further comprises flaps ( 43 ) extending from opposite ends of the panels ( 34 ) providing the front walls ( 14 ,  16 ) of the container ( 10 ) and the lid ( 12 ), such as can be associated with the wings ( 40 ,  41 ) to make up the top ( 8 ) and the bottom ( 9 ) of the packet ( 1 ). 
   
   
       17 ) A packet as in  claim 15 , wherein the Vee cut ( 37 ) presents a substantially looped portion ( 44 ) generating the shaped portion ( 29 ) and the respective recess ( 30 ), extending across a central precreased fold area ( 33 ) that coincides with the front corner edge ( 26 ) of the packet. 
   
   
       18 ) A packet as in  claim 16 , wherein the frame ( 22 ) is fashioned from a flat leaf ( 45 ) of wrapping material substantially rectangular in outline and comprising three mutually parallel precreased fold areas ( 46 ) positioned to delimit two panels ( 47 ) providing a breast piece ( 24 ) of the frame ( 22 ), the panels ( 47 ) being secured to the inside surface presented by the two panels ( 34 ) of the blank ( 32 ) providing the front ( 18 ) of the packet, in such a way that the frame ( 22 ) will project partially from the container ( 10 ). 
   
   
       19 ) A packet as in  claim 18 , wherein a central precreased area ( 46 ) of the leaf ( 45 ), coinciding with the front corner edge ( 26 ) of the packet, is occupied by a transverse Vee cut ( 52 ) delimiting the panels ( 47 ) of the frame ( 22 ) on the one hand and the insert ( 31 ) of the lid ( 12 ) on the other. 
   
   
       20 ) A packet as in  claim 19 , wherein the insert ( 31 ) is attached permanently to the lid ( 12 ) and detached from the frame ( 22 ). 
   
   
       21 ) A packet as in  claim 19 , wherein the Vee cut ( 52 ) presents a substantially looped portion ( 53 ) extending across the central precreased area ( 46 ) coinciding with the front corner edge ( 26 ) of the packet, by which the shaped portion ( 29 ) and the respective recess ( 30 ) are generated. 
   
   
       22 ) A packet as in  claim 21 , wherein the flat leaf ( 45 ) presents two appendages ( 51 ), each associated with a respective panel ( 47 ) making up the breast piece ( 24 ) of the frame ( 22 ), and attachable to the flaps ( 43 ) making up the bottom ( 9 ) of the packet ( 1 ).