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Jack having safety effect

September 27, 2006
Jack having safety effect. Check it out:
(U.S. Patents Via Thomson Dialog NewsEdge) Pub. Number US7108245
Appl. Data 11 20050114
Applicant Kai Hsiang Enterprise Co., Ltd.
Inventor(s) Lin, Lai-Shun
Title Jack having safety effect
Abstract A jack includes a base provided with a plurality of
catch blocks, a lift arm pivotable relative to the base, and a safety member
pivotally mounted on the lift arm to move therewith. Thus, when the lift arm is
lifted, the first end of the safety member is locked on either one of the catch
blocks of the base, so that the safety member is fixed by the base during
upward movement of the lift arm so as to fix the lift arm, thereby preventing
the lift arm from being lowered too quickly when the power supplied to the lift
arm disappears accidentally due to malfunction so as to provide a safety
effect.

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