发明名称 |
METHOD AND APPARATUS FOR MAKING NIPPLE HOLES IN A DOUBLE-WALLED HOLLOW RIM OF A SPOKE WHEEL |
摘要 |
<p>PCT No. PCT/NL95/00337 Sec. 371 Date Apr. 3, 1997 Sec. 102(e) Date Apr. 3, 1997 PCT Filed Oct. 5, 1995 PCT Pub. No. WO96/11075 PCT Pub. Date Apr. 18, 1996The invention relates to a method of making nipple holes or similar holes in a double-walled wheel rim having an inner wall positioned radially inward and outside of that an outer wall. The holes are made by punching by means of a punching tool provided with a cutting edge whereby the cutting edge is moved successively through the outer wall and the inner wall of the wheel rim and a punch die supporting the inner wall. The invention encompasses also an apparatus for the application of this method.</p> |
申请公布号 |
EP0784520(B1) |
申请公布日期 |
1999.05.12 |
申请号 |
EP19950934889 |
申请日期 |
1995.10.05 |
申请人 |
HOLLAND MECHANICS B.V. |
发明人 |
WESSELS, JASPER, JOHANNES |
分类号 |
B21D28/30;B21D53/26;(IPC1-7):B21D28/30 |
主分类号 |
B21D28/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|