US7117573B1 | 寵物協尋網
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PublicationofUS7117573B1...Thepriorartisessentiallycomprisedofapuller7havingdisposedatitscenterathreadedrod8andoutwardlyextending ...
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(a) Field of the Invention
The present invention is related to a puller, and more particularly to one that allows easy replacement of jaws depending on the conditions of work environment.
(b) Description of the Prior Art
As illustrated in FIG. 5 of the accompanying drawings, a puller of the prior art is applied in the replacement or assembly operation of a work piece by holding the circumference of work piece to remove the work piece by pushing a cylindrical rod against it.
The prior art is essentially comprised of a puller 7 having disposed at its center a threaded rod 8 and outwardly extending from its center three fixed arms 71; a connection holder 9 is provided at where below the puller 7; a connecting arm 91 extending from each fixed arm 71; a jaw 92 is pivoted to the terminal of each connecting arm 91; a spring 82 of the ...
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