Spanning device for crossbows
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United States of America Patent
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May 2, 2017
Grant Date -
N/A
app pub date -
Nov 7, 2016
filing date -
Nov 7, 2016
priority date (Note) -
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Abstract
A spanning device of a crossbow includes a barrel, an action unit and an spanning unit. A space is defined in the barrel. A limb is connected close to the front end of the barrel. A string is connected between two ends of the limb. The action unit slidably located in the space and has a portion exposed from the space. The action unit has a slide, a restriction member, a safety member, a hook member and a trigger. The restriction member, the safety member, the hook member and the trigger are connected to the slide which is slidably engaged with the space. The spanning unit has a pull rod, a pivotal rod and a first link. The spanning unit drives the action unit to move in the space, so that when the hook member hooks the string, the string is easily pulled with less effort.
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