The invention provides a jack tool which comprises a first shaft and a second shaft. The first shaft comprises a first tail with a first protrusion connected to a first spring. The second shaft comprises a second head with a second hole. The second hole detachably contains the first protrusion of the first shaft by means of force which is converted by force acting on the first protrusion in different directions and acts on the first spring.
Stretchable jack tool and jack assembling using same
2015-06-17
Patent
Electronic Resource
English
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
Extendable jack tool and jack assembly employing the same
European Patent Office | 2016
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