发明名称 |
Composite piston assembly for automotive air conditioning compressor |
摘要 |
A composite piston for an automotive air conditioning compressor is provided having an aluminum shank or piston rod, a reinforced plastic piston head and a steel ball for engaging a socket plate or the like. The shank has a distal end that has a slight reverse taper and a knurled surface for providing attachment to the plastic head that is molded thereon. The proximal end of the shank has a barrel to which the steel ball is press fitted. The shank is provided with a first collar adjacent the knurled distal end of the shank and a second collar adjacent to and intermediate the first collar and the proximal end of the shank. The first collar provides a seal for the mold cavity into which plastic is injected to form the piston head over the knurled surface of the shank. The second collar provides a support for the press fit operation of the steel ball onto the distal end of the shank.
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申请公布号 |
US5022313(A) |
申请公布日期 |
1991.06.11 |
申请号 |
US19900461711 |
申请日期 |
1990.01.08 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
SHONTZ, KIMBALL C.;GAVLAK, MICHAEL A.;EBBING, DAVID M. |
分类号 |
B29C45/14;F04B39/00;F16J1/00;F16J1/12 |
主分类号 |
B29C45/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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