Explosive powder driven setting gun with silencing device

Claim 2

An explosive power driven setting gun for driving anchoring members, such as bolts, studs, nails and the like, into a target material, comprising an axially elongated barrel forming a bore and having a forward muzzle end and an oppositely disposed rearward end, a sleeve extending in the axial direction of said barrel and secured to and laterally enclosing said barrel for a portion of its axial length forwardly of the rearward end of its bore, an axially extending portion of the outer surface of said barrel disposed in spaced relationship to the inner surface of said sleeve and forming therebetween an axially extending ringshaped slot about said barrel radially outwardly from said bore, at least one connecting passage extending through said barrel between the bore therein and said ring-shaped slot, at least one gas outlet passage located in said barrel radially inwardly of said ring-shaped slot and communicating between said ring-shaped slot and the bore in said barrel, said gas outlet passage located closer to the forward end of said bore than said connecting passage, Said bore having a larger diameter adjacent the rearward end of said barrel than the portion of said bore which extends rearwardly from said forward end toward said rearward end, said ring-shaped slot located laterally about the smaller diameter end of said bore extending rearwardly from the forward end of said barrel, and said connecting passage extending from the larger diameter portion of said bore to said ring-shaped slot.

Claim 3

An explosive powder driven setting gun for driving anchoring members, such as bolts, studs, nails and the like, into a target material, comprising an axially elongated barrel forming a bore and having a forward muzzle end and an oppositely directed rearward end, a sleeve extending in the axial direction of said barrel and secured to and laterally enclosing said barrel for a portion of its axial length forwardly of the rearward end of said bore, an axially extending portion of the outer surface of said barrel disposed in spaced relationship to the inner surface of said sleeve and forming therebetween an axially extending ring-shaped slot about said barrel radially outwardly from said bore, a plurality of connecting passages extending through said barrel between the bore therein and said ring-shaped slot, a plurality of gas outlet passages located in said barrel radially inwardly of said ring-shaped slot and communicating between said ring-shaped slot and the bore in said barrel, said gas outlet passages spaced from said connecting passages toward the forward end of said bore, the plurality of said gas outlet passages are spaced angularly apart, said connecting passages are located in radial planes extending through the axis of said barrel, said gas outlet passages are located in radial planes extending through the axis of said barrel and the radial planes containing said connecting passages are spaced angularly apart from the radial planes containing said gas outlet passages, and at least one outlet opening formed in said barrel and opening from said bore into the forward end of said barrel so that gas within the bore can flow outwardly therefrom through said outlet opening and out of the forward end of said barrel.

Claim 4

An explosive powder driven setting gun for driving anchoring members, such as bolts, studs, nails and the like, into a target material, comprising an axially elongated barrel forming a bore and having a forward muzzle end and an oppositely directed rearward end, a sleeve extending in the axial direction of said barrel and secured to and laterally enclosing said barrel for a portion of its axial length forwardly of the rearward end of said bore, an axially extending portion of the outer surface of said barrel disposed in spaced relationship to the inner surface of said sleeve and forming therebetween an axially extending ring-shaped slot about said barrel radially outwardly from said bore, a plurality of connecting passages extending through said barrel between the bore therein and said ring-shaped slot, a plurality of gas outlet passages located in said barrel radially inwardly of said ring-shaped slot and communicating between said ring-shaped slot and the bore in said barrel, said gas outlet passages spaced from said connecting passages toward the forward end of said bore, the plurality of said gas outlet passages are spaced angularly apart, said connecting passages are located in radial planes extending through the axis of said barrel, said gas outlet passages are located in radial planes extending through the axis of said barrel and the radial planes containing said connecting passages are spaced angularly apart from the radial planes containing said gas outlet passages, and at least one outlet opening formed in said barrel and opening from said bore into the forward end of said barrel so that gas within the bore can flow outwardly therefrom through said outlet opening and out of the forward end of said barrel.

Claim 5

An explosive powder driven setting gun, as set forth in claim 2, wherein a plurality of said outlet openings are provided in said barrel corresponding to the number of said gas outlet passages and each said outlet opening is aligned with a different one of said gas outlet passages.

Claim 6

An explosive powder driven setting gun, as set forth in claim 3, wherein said outlet openings are formed as axially extending grooves in the surface of the bore in said barrel and extend from the ends of said gas outlet passages closer to the forward end of said barrel to the forward end of said barrel.

Claim 7

An explosive powder driven setting gun for driving anchoring members, such as bolts, studs, nails and the like, into a target material, comprising an axially elongated barrel forming a bore and having a forward muzzle end and an oppositely directed rearward end, a sleeve extending in the axial direction of said barrel and secured to and laterally enclosing said barrel for a portion of its axial length forwardly of the rearward end of its bore, an axially extending portion of the outer surface of said barrel disposed in spaced relationship to the inner surface of said sleeve and forming therebetween an axially extending ring-shaped slot about said barrel radially outwardly from said bore, a plurality of connecting passages extending through said barrel between the bore therein and said ring-shaped slot, a plurality of gas outlet passages located in said barrel radially inwardly of said ring-shaped slot and communicating between said ring-shaped slot and the bore in said barrel, said gas outlet passages spaced from said connecting passages toward the forward end of said bore, the plurality of said gas outlet passages are spaced angularly apart, said connecting passages are located in radial planes extending through the axis of said barrel, saiD gas outlet passages are located in radial planes extending through the axis of said barrel and the radial planes containing said connecting passages are spaced angularly apart from the radial planes containing said gas outlet passages, and a gas-permeable insulating material acoustically inert to the gases and temperatures generated in an explosive powder driven setting gun is located within said ring-shaped slot.

Claim 8

An explosive powder driven setting gun for driving anchoring members, such as bolts, studs, nails and the like, into a target material, comprising an axially elongated barrel forming a bore and having a forward muzzle end and an oppositely directed rearward end, a sleeve extending in the axial direction of said barrel and secured to and laterally enclosing said barrel for a portion of its axial length forwardly of the rearward end of its bore, an axially extending portion of the outer surface of said barrel disposed in spaced relationship to the inner surface of said sleeve and forming therebetween an axially extending ring-shaped slot about said barrel radially outwardly from said bore, a plurality of connecting passages extending through said barrel between the bore therein and said ring-shaped slot, a plurality of gas outlet passages located in said barrel radially inwardly of said ring-shaped slot and communicating between said ring-shaped slot and the bore in said barrel, said gas outlet passages spaced from said connecting passages toward the forward end of said bore, the plurality of said gas outlet passages are spaced angularly apart, said connecting passages are located in radial planes extending through the axis of said barrel, saiD gas outlet passages are located in radial planes extending through the axis of said barrel and the radial planes containing said connecting passages are spaced angularly apart from the radial planes containing said gas outlet passages, and a gas-permeable insulating material acoustically inert to the gases and temperatures generated in an explosive powder driven setting gun is located within said ring-shaped slot.

Claim 9

An explosive powder driven setting gun for driving anchoring members, such as bolts, studs, nails and the like, into a target material, comprising an axially elongated barrel forming a bore and having a forward muzzle end and an oppositely directed rearward end, a sleeve extending in the axial direction of said barrel and secured to and laterally enclosing said barrel for a portion of its axial length forwardly of the rearward end of its bore, an axially extending portion of the outer surface of said barrel disposed in spaced relationship to the inner surface of said sleeve and forming therebetween an axially extending ring-shaped slot about said barrel radially outwardly from said bore, a plurality of connecting passages extending through said barrel between the bore therein and said ring-shaped slot, a plurality of gas outlet passages located in said barrel radially inwardly of said ring-shaped slot and communicating between said ring-shaped slot and the bore in said barrel, said gas outlet passages spaced from said connecting passages toward the forward end of said bore, the plurality of said gas outlet passages are spaced angularly apart, said connecting passages are located in radial planes extending through the axis of said barrel, said gas outlet passages are located in radial planes extending through the axis of said barrel and the radial planes containing said connecting passages are spaced angularly apart from the radial planes containing said gas outlet passages, and means are arranged within said ring-shaped slot for dividing said ring-shaped slot into a plurality of individual interconnected compartments.

Claim 10

An explosive powder driven setting gun for driving anchoring members, such as bolts, studs, nails and the like, into a target material, comprising an axially elongated barrel forming a bore and having a forward muzzle end and an oppositely directed rearward end, a sleeve extending in the axial direction of said barrel and secured to and laterally enclosing said barrel for a portion of its axial length forwardly of the rearward end of its bore, an axially extending portion of the outer surface of said barrel disposed in spaced relationship to the inner surface of said sleeve and forming therebetween an axially extending ring-shaped slot about said barrel radially outwardly from said bore, a plurality of connecting passages extending through said barrel between the bore therein and said ring-shaped slot, a plurality of gas outlet passages located in said barrel radially inwardly of said ring-shaped slot and communicating between said ring-shaped slot and the bore in said barrel, said gas outlet passages spaced from said connecting passages toward the forward end of said bore, the plurality of said gas outlet passages are spaced angularly apart, said connecting passages are located in radial planes extending through the axis of said barrel, said gas outlet passages are located in radial planes extending through the axis of said barrel and the radial planes containing said connecting passages are spaced angularly apart from the radial planes containing said gas outlet passages, and means are arranged within said ring-shaped slot for dividing said ring-shaped slot into a plurality of individual interconnected compartments.

Claim 11

An explosive powder driven setting gun, as set forth in claim 6, wherein said means for dividing said ring-shaped slot are fins.