US2007170016A1PendingUtilityA1

Brake drum and process for manufacturing the same

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Assignee: HONDA MOTOR CO LTDPriority: Feb 3, 2004Filed: Mar 9, 2007Published: Jul 26, 2007
Est. expiryFeb 3, 2024(expired)· nominal 20-yr term from priority
Inventors:Naoaki YamamotoTsuyoshi HaruharaSatoshi MatsuuraHiroto ShojiTakaharu EchigoMasashi HaraHiroki TakanoYusuke ToyodaTakahiro MizukamiKatsuhiro Shibata
F16D 2250/0023F16D 2200/0039F16D 65/125F16D 2065/1308Y10T29/49998F16D 2250/0092F16D 2200/0004F16D 2250/00F16D 65/12
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Claims

Abstract

A brake drum has its strength elevated in its disk portion. The brake drum is formed from a composition having ceramics dispersed in a matrix. The disk portion has a high ceramic content and thereby a high strength. Its cylindrical portion has a ceramic content decreasing gradually from the outer edge of the disk portion.

Claims

exact text as granted — not AI-modified
1 . A cup-shaped brake drum comprising: 
 a disk portion to which an axle is secured; and    a cylindrical portion protruding from the outer edge of the disk portion in parallel to the axle,    the brake drum being formed from a composition containing ceramics dispersed in a metal matrix, the disk portion having a high ceramic content and the cylindrical portion having a ceramic content decreasing gradually from the outer edge of the disk portion.    
   
   
       2 . A brake drum according to  claim 1 , wherein the disk portion preferably has along an outer edge thereof a conical part to which the cylindrical portion is connected.  
   
   
       3 - 5 . (canceled)  
   
   
       6 . A brake drum comprising: 
 a disk portion to which an axle is to be secured, the disk portion having an outer edge; and    a cylindrical portion protruding from the outer edge of the disk portion in parallel to the axle,    the disk portion and the cylindrical portion being formed from a composition containing ceramics dispersed in a metal matrix, the disk portion having a first ceramic content and the cylindrical portion having a second ceramic content, wherein the first ceramic content is greater than the second ceramic content.    
   
   
       7 . A brake drum according to  claim 6 , wherein the disk portion has along said outer edge thereof a conical part to which the cylindrical portion is connected.  
   
   
       8 . A brake drum according to  claim 1 , wherein the disk portion includes holes formed therethrough.  
   
   
       9 . A brake drum according to  claim 6 , wherein the disk portion includes holes formed therethrough.  
   
   
       10 . A brake drum according to  claim 1 , wherein the cylindrical portion is contiguous to the outer edge of the disk portion.  
   
   
       11 . A brake drum according to  claim 6 , wherein the cylindrical portion is contiguous to the outer edge of the disk portion.

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