Title:
BALL JOINT
Document Type and Number:
WIPO Patent Application WO/2008/028403
Kind Code:
A1
Abstract:
A ball joint (5) includes a ball head with upper and lower spherical parts of different diameter (1, 4). The lower spherical part (1) is greater than the upper spherical part (4). A shoulder (2) is formed between the upper and lower spherical parts (1, 4). The surface of the shoulder (2) is perpendicular to the axis of the ball joint (5). Said surface is 1-2mm lower than the center of the upper spherical part (3). The head is prevented from escaping from the ball seat even if the ball joint (5) is worn or drawn greatly.
Inventors:
LI FUGEN (CN)
ZHANG SHENGLIANG (CN)
LIU YOUYU (CN)
ZHANG SHENGLIANG (CN)
LIU YOUYU (CN)
Application Number:
PCT/CN2007/002517
Publication Date:
March 13, 2008
Filing Date:
August 20, 2007
Export Citation:
Assignee:
FENGRI ELECTRIC GROUP CO LTD (CN)
LI FUGEN (CN)
ZHANG SHENGLIANG (CN)
LIU YOUYU (CN)
LI FUGEN (CN)
ZHANG SHENGLIANG (CN)
LIU YOUYU (CN)
International Classes:
F16C11/06
Foreign References:
| US4974985A | 1990-12-04 | |||
| JPH01312218A | 1989-12-18 | |||
| CN2700184Y | 2005-05-18 | |||
| CN2700184Y | 2005-05-18 |
Attorney, Agent or Firm:
CHANGSHA RONGZHI PATENT AGENCY (Changsha, Hunan 1, CN)
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