Explosive charge feed arrangement for a setting gun
AssigneeHilti Aktiengesellschaft
InventorsPeter Jochum, Hans Dieter Seghezzi
Life of this patent
Estimating the term…
Abstract
In an explosive charge setting gun used for driving fastening elements into a hard target material, caseless charges are positioned in a magazine duct and are separated by spacers. A movable element in the gun picks up a caseless charge from the magazine and moves it into position to be fired. The movable member includes an ejector which displaces the spacer following the charge, from the magazine. The movable element can be a slidable barrel or a separate slide member. The ejector can be formed as recesses or cams on the movable element. The spacers are shaped so that they are not picked up by the movable element when a charge is moved into the firing position.
Claims17
Explosive charge driven setting gun for driving fastening elements into a hard target material, comprising a gun housing including a handle, a firing mechanism within said housing, a magazine duct within said housing arranged to receive a plurality of alternating caseless charges and spacers and having an outlet opening spaced from said firing mechanism through which caseless charges can be removed from said magazine duct, means movably displaceable within said gun housing and including a receiving recess displaceable between a first position in alignment with the outlet opening from said magazine duct and a second position juxtaposed to said firing mechanism so that a caseless charge can be received from said magazine duct in the first position of said receiving recess and then moved to the second position for ignition by said firing mechanism, wherein the improvement comprises that said means include ejector means for displacing a spacer from the outlet opening from said magazine duct after the caseless charge immediately preceding the spacer has been displaced into said receiving recess from said first position, into a position for displacing said spacer out of said gun housing as said means moves from the second position to the first position.
Dependencies are inferred from the claim text.