Chamber of a peristaltic pump for tire pressure adjustment

Abstract

A chamber ( 1 ) that works as a peristaltic pump for the pressure correction in the tire ( 4 ), which is a part of the tire ( 4 ) or of an ancillary structure ( 6 ) placed between the rim ( 7 ) and the tire bead ( 4 ) and is connected with the tire ( 4 ) internal space at one end and with the external environment at the other end. The chamber ( 1 ) is in the shape of a curved hollow channel, where at least one enclosing wall is at least partially formed by at least a pair of surfaces ( 10 ) coplanar with the longitudinal direction of the chamber ( 1 ). When the tire is mounted on the rim, the pair of surfaces ( 10 ) are pressed together thus hermetically closing the chamber ( 1 ). When the chamber ( 1 ) is closed during rotation of the wheel, the surfaces ( 10 ) can slightly slide on one another taking internal wall tensions onto themselves thus decreasing the possibility of wall damage through ripping. A method of producing the chamber ( 1 ) is also disclosed.

1 . A chamber with shape memory for pressure correction in a tire, the chamber being a part of the tire or adjacent to a tire wall and being connected with an interior of the tire on one end of the chamber and with an external environment on another end of the chamber, the chamber having a shape of a curved hollow channel, the chamber having at least one enclosing wall formed at least partially by a pair of surfaces that form an angle α=0 to 120° with each other. 
   
   
       2 . The chamber according to  claim 1 , wherein the chamber is at least partially ring-shaped, or at least partially helix-shaped. 
   
   
       3 . The chamber according to  claim 1 , wherein the chamber is placed in an area of a side wall of the tire at its bead. 
   
   
       4 . The chamber according to  claim 1 , wherein the chamber is placed in an ancillary structure inserted between a side wall of the tire and at least one of a rim, a hubcap, or a support connected to the rim or hubcap. 
   
   
       5 . The chamber according to  claim 4 , wherein the ancillary structure with the chamber is connected to the rim or hubcap or tire side wall. 
   
   
       6 . The chamber according to  claim 4 , wherein the shape of the ancillary structure with the chamber is adapted for a connection to the side wall of the tire from one side and the shape of the ancillary structure is adapted for a connection to a rim from another side. 
   
   
       7 . The chamber according to  claim 1 , wherein the chamber is terminated by a member at least at one end. 
   
   
       8 . The chamber according to  claim 1 , wherein the chamber is interconnected with at least one of a tire, a rim, a support, or a hubcap. 
   
   
       9 . A chamber manufacturing process for providing a chamber in a tire, the chamber having shape memory for pressure correction in the tire, the chamber being a part of the tire or adjacent to a tire wall and being connected with an interior of the tire on one end of the chamber and with an external environment on another end of the chamber, wherein the chamber has a shape of a curved hollow channel, the chamber having at least one enclosing wall formed at least partially by a pair of surfaces that form an angle α=0 to 120° with each other, comprising placing a matrix with a width of 0.1 mm to 200 mm and thickness of 0.01 to 100 mm between layers forming a side wall of the tire or an ancillary structure, performing vulcanization, and extracting the inserted matrix as a whole or at length corresponding to the length of the chamber, whole or in parts. 
   
   
       10 . The manufacturing method according to  claim 9 , wherein a thickness of the matrix changes at least in part of a width of the matrix in a direction of a center axis of the matrix. 
   
   
       11 . The manufacturing method according to the  claim 9 , wherein the matrix is extracted and a member with a cross-section at least at one point identical with a cross-section of the chamber at a place of location of the member in the chamber is inserted into a formed slot. 
   
   
       12 . The manufacturing method according to  claim 9 , wherein the matrix is divided into at least two parts, the first part corresponding to a length of the chamber and being extracted after vulcanization and a supplementary part of the matrix remaining in the tire or in the ancillary structure. 
   
   
       13 . The manufacturing method according to  claim 11 , wherein the member is at least at one end fitted with a channel that opens at a face of the another end of the chamber and then leads into the external environment. 
   
   
       14 . The manufacturing method according to  claim 9 , wherein at least a part of the chamber is pressed, extruded, ground out, milled out, machined, cut out, melted off, or burned out. 
   
   
       15 . The manufacturing method according to  claim 9  wherein a hose containing the chamber is inserted into the slot and/or it is fitted with a solid section with the hose cross-section with a smaller area than the area of the cross-section of the unloaded chamber. 
   
   
       16 . The manufacturing method according to  claim 9 , wherein forces applied on at least a part of the chamber wall are generally of perpendicular direction. 
   
   
       17 . A tire having a chamber, the chamber having shape memory for pressure correction in the tire, the chamber being adjacent to a tire wall and being connected with an interior of the tire on one end of the chamber and with an external environment on another end of the chamber, wherein the chamber has a shape of a curved hollow channel, the chamber having at least one enclosing wall formed at least partially by a pair of surfaces that form an angle α=0 to 120° with each other, wherein the wall is fitted with a profile for ancillary structure including the chamber to fit. 
   
   
       18 . A wheel rim for a tire having a chamber, the chamber having shape memory for pressure correction in the tire, the chamber being connected with an interior of the tire on one end of the chamber and with an external environment on another end of the chamber, wherein the chamber has a shape of a curved hollow channel, the chamber having at least one enclosing wall formed at least partially by a pair of surfaces that form an angle α=0 to 120° with each other, wherein at least one wall of the rim is fitted with a profile for ancillary structure including the chamber to fit. 
   
   
       19 . The chamber according to  claim 1 , wherein the angle α>0° and the chamber is at a connecting edge of the surfaces.