Drainage device

Abstract

The invention discloses a drainage device for surface drainage, in particular a drainage channel, comprising a, preferably elongate, basic element ( 12 ), a lid ( 22 ), preferably a cover grate, covering an opening ( 16 ) in the basic element ( 12 ), and comprising at least one locking engagement means ( 38, 40 ) for the locking engagement of the lid ( 22 ) to the basic element ( 12 ), the engagement means ( 38, 40 ) comprising at least one first element ( 42 ) for locking to the basic element ( 12 ) and at least one second locking element ( 44 ), which is integral with the lid ( 22 ) and may be brought into directly locking engagement with the first locking element ( 42 ). The unique feature of the invention is that at least one projection ( 34, 36 ), which protrudes in the direction of the base ( 18 ) of the basic element ( 12 ) and holds the second locking element ( 44 ), is substantially rigidly secured to the lid ( 22 ).

1 - 22 . (canceled)  
   
   
       23 . A drainage device for surface drainage, comprising: 
 an elongate basic element;    a lid configured to cover an opening in the basic element; and    an engagement arrangement configured to facilitate locking engagement of the lid to the basic element, the engagement arrangement comprising: 
 at least one first locking element being arranged on the basic element; and  
 at least one second locking element integral with the lid and configured to be brought into locking engagement with the first locking element, at least one projection, which protrudes in a direction of a base of the basic element, being integrally formed on the lid and the second locking element being arranged on a portion of the projection that is remote from the lid, wherein the portion of the projection that is remote from the lid is wider than a remaining portion of the projection and substantially has a shape of a rod extending substantially parallel to a plane of the lid.  
   
   
   
       24 . The device according to claim  1 , wherein one or both of a portion of the projection that holds the second locking element and at least a portion of the basic element that holds the first locking element is resilient in configuration at least in a direction at an angle to the plane of the lid.  
   
   
       25 . The device according to claim  1 , wherein one or both of at least a portion of the projection that holds the second locking element and at least a portion of the basic element that holds the first locking element is located in a direction at an angle transverse to a longitudinal extent of the basic element.  
   
   
       26 . The device according to claim  1 , wherein the projection is integrally formed on the lid.  
   
   
       27 . The device according to claim  1 , wherein the lid comprises ribs, and the projection is formed by at least one of the ribs or is formed integrally on at least one of the ribs.  
   
   
       28 . The device according to  claim 27 , wherein the ribs are configured, at least in part, as transverse ribs extending between longitudinal sides of the lid, wherein the projection is formed by at least one of the transverse ribs or is formed integrally on at least one of the transverse ribs.  
   
   
       29 . The device according to claim  1 , wherein the first and second locking elements comprise complementary recesses and projections configured to be brought into mutual engagement.  
   
   
       30 . The device according to  claim 29 , wherein the first locking element comprises a ridge and the second locking element comprises a complementary groove.  
   
   
       31 . The device according to claim  1 , wherein the first and second locking elements comprise locking noses configured to be brought into mutual engagement.  
   
   
       32 . The device according to claim  1 , wherein: 
 the basic element comprises at least one bearing surface for the lid;    an indentation is formed in a region of the bearing surface; and    the first locking element is arranged within the indentation.    
   
   
       33 . The device according to  claim 32 , wherein the projection is configured such that, in an assembled state of the drainage device, the second locking element protrudes into the indentation in the basic element and is in locking engagement with the first locking element.  
   
   
       34 . The device according to claim  1 , wherein the basic element comprises a skirt configured to receive the lid, and the first locking element is integrated into the skirt.  
   
   
       35 . The device according to claim  1 , wherein the lid comprises a cover grate.  
   
   
       36 . A drainage device for surface drainage, comprising: 
 an elongate basic element;    a lid configured to cover an opening in the basic element;    means for displaceably arranging the lid on the basic element; and    means for retentively engaging the lid and the basic element, the engaging means comprising at least one pair of engagement arrangements that may be brought into mutual engagement, of which a first engagement arrangement is provided on the lid and a second engagement arrangement is provided on the basic element.    
   
   
       37 . The device according to  claim 36 , wherein the first engagement arrangement comprises at least one nose and the second engagement arrangement comprises at least one recess for receiving the at least one nose.  
   
   
       38 . The device according to  claim 36 , wherein the second engagement arrangement comprises at least one nose and the first engagement arrangement comprises at least one recess for receiving the at least one nose.  
   
   
       39 . The device according to claims  38 , wherein the at least one nose rises from a bearing surface of the basic element and the at least one recess on a lower side of the lid forms a corresponding indentation.  
   
   
       40 . The device according to  claim 36 , wherein the basic element comprises at least one bearing surface for the lid, the first engagement arrangement is configured on a lower side of the lid, and the second engagement arrangement is configured on the bearing surface of the basic element.  
   
   
       41 . The device according to claims  40 , wherein the second engagement arrangement comprises at least one nose and the first engagement arrangement comprises at least one recess on the lower side of the lid for receiving the at least one nose, wherein the at least one nose rises from the bearing surface and the at least one recess forms a corresponding indentation.  
   
   
       42 . The device according to  claim 39 , wherein the lid comprises ribs, with edge portions of which the lid rests on the bearing surface on the basic element, and at least one recess is formed between two adjacent edge portions of the ribs.  
   
   
       43 . The device according to  claim 36 , wherein the basic element comprises at least one side wall portion, and the means for displaceably arranging the lid comprises at least one stop for abutment with the at least one side wall portion.  
   
   
       44 . The device according to  claim 43 , wherein the basic element comprises at least one bearing surface for the lid, below which the at least one side wall portion is located, and the stop is configured to form an extension arranged on a lower side of the lid.  
   
   
       45 . The device according to  claim 38 , wherein the basic element comprises a skirt, which serves for receiving the lid, and the second engagement arrangement is configured on the skirt.