Plug for closing box-like bodies

Abstract

A plug for closing box-like bodies, which comprises a head that has a circular perimeter and from which at least two substantially flat stems protrude substantially tangentially, the plug entering, by means of the stems, the box-like body through an opening provided in a wall of the box-like body, each stem having snap-acting elements for quick engagement with a portion for accommodating the box-like body and at least one elastically deformable portion designed to be compressed during insertion.

What is claimed is: 
     
         1 . A plug for closing box-like bodies, comprising a head that has a circular perimeter and from which at least two substantially flat stems protrude substantially tangentially, said plug entering, by means of said stems, said box-like body through an opening provided in a wall of said box-like body, said head engaging, by means of its rim, the rim of said opening and each stem having snap-acting means for quick engagement with a portion for accommodating said box-like body and being provided with at least one elastically deformable portion which has substantially the shape of a leaf spring provided in one piece with the rest of the stem and designed to be compressed during insertion. 
     
     
         2 . The plug according to  claim 1 , wherein said snap-acting quick engagement means comprise a tooth for snap connection to said accommodation portion, which has a corresponding insertion seat for said tooth. 
     
     
         3 . The plug according to  claims 1 , wherein that said substantially flat stem has, on one side, said elastically deformable portion and, on the opposite side, said tooth. 
     
     
         4 . The plug according to  claim 3 , wherein said two stems face each other and are diametrically mutually opposite, the tooth of one of them being substantially opposite with respect to the elastically deformable portion of the other one of said stems. 
     
     
         5 . The plug according to  claim 4 , wherein said head has a substantially annular shape, with a larger annular portion and a smaller annular portion that forms, with the preceding one, a resting step for said head, which is associated with abutment with the seat of said opening, said stems protruding from diametrically opposite regions of said smaller annular portion. 
     
     
         6 . The plug according to  claim 3 , wherein said stem has a recess which, by protruding from its end inwardly, on the rear of said elastically deformable portion, increases the limit of elastic deformation of said stem. 
     
     
         7 . The plug according to  claim 3 , wherein said tooth protrudes proximate to the end of said stem and is defined by a contoured recess for the release of the tooth by means of the lateral insertion of tools such as a flat screwdriver and the like. 
     
     
         8 . The plug according to  claim 5 , wherein it is provided with a circular closure having dimensions that are compatible with the part of said head that is surrounded by said smaller annular portion and by said larger annular portion, and in which the closure is inserted. 
     
     
         9 . Use of a plug according to  claim 1  to close a box-like body that contains a hydraulic pumping device, said plug being insertable with the stems around a delivery or suction duct of said hydraulic pumping device, and said head being closable by means of said closure, to be inserted with one of its stems in the mouth of said duct.