US 7,320,352 B2 | ||
Split rim for pneumatic tire | ||
Yoshiaki Hirata, Kodaira (Japan); Keigo Kikuchi, Kodaira (Japan); and Akio Oobayashi, Kodaira (Japan) | ||
Assigned to Bridgestone Corporation, Tokyo (Japan) | ||
Appl. No. 10/504,574 PCT Filed Feb. 18, 2003, PCT No. PCT/JP03/01738 § 371(c)(1), (2), (4) Date Apr. 13, 2005, PCT Pub. No. WO03/071250, PCT Pub. Date Aug. 28, 2003. |
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Claims priority of application No. 2002-042631 (JP), filed on Feb. 20, 2002. | ||
Prior Publication US 2005/0173039 A1, Aug. 11, 2005 | ||
Int. Cl. B60C 25/00 (2006.01) |
U.S. Cl. 157—18 [157/1.35; 73/146] | 5 Claims |
1. A split rim for a pneumatic tire, comprising a disk part having a seat portion allowing one of bead portions of a pneumatic tire to be seated at an outer end in the radial direction, and first and second pieces having cylindrical parts coaxially connected to the disk part, respectively, wherein the cylindrical parts of the first and the second pieces can be inserted into each other, and a fastening means is further provided for fastening the cylindrical parts of the first and the second pieces overlapped in the inserted state to each other at their overlapped region, wherein the split rim for the pneumatic tire further comprises an expanding means for expanding the cylindrical part of the second piece in the overlapped region radially outward so that the cylindrical parts of the first piece and the second piece are brought into close contact with each other at the overlapped region, the expanding means including a guide shaft coaxial with the center shaft of the cylindrical part of the first piece, a slider fitted to the outside of the guide shaft movable in the axial direction of the guide shaft and having a tapered surface made of a part of a conical surface on the outer circumference, and an enlarging member with the inner circumference which can be engaged with the tapered surface of the slider and the outer circumference which can be engaged with the inner circumference of the cylindrical part of the second piece, respectively, the cylindrical part of the second piece at the overlapped region being expanded radially outward by moving the slider in the axial direction and by enlarging the enlarging member outward in the radial direction by a wedge action of the tapered surface. |