Firearm barrel

Abstract

A semiautomatic pistol having a barrel with an exterior surface that has a plurality of indentations and dimples to dissipate heat and reduce frictional engagement between the barrel and the slide. The barrel component includes a crown portion that is recessed to protect the crown portion by a pocket.

What is claimed is: 
     
         1 . A firearm barrel component for a semiautomatic pistol, the barrel component comprising:
 a barrel member defining an interior path and an outer surface, the barrel member having a first and a second end;   a firing chamber attached to the first end of the barrel member;   a pivoting assembly coupled to the firing chamber to permit the barrel component to pivot in a frame when the firearm is fired;   wherein the outer surface of the barrel member includes a plurality of indentations that increase the surface area to dissipate heat.   
     
     
         2 . The component of  claim 1 , wherein the dimples have a depth of approximately 0.015 inches and the diameters are approximately 0.375 inches with the center of the dimples being in these examples 0.250 inches apart. 
     
     
         3 . The component of  claim 2 , wherein the barrel has a length of approximately 4.00 inches. 
     
     
         4 . The component of  claim 1 , wherein the barrel member has a crown portion that is positioned adjacent the outer end of the barrel. 
     
     
         5 . The component of  claim 4 , wherein the barrel member is rifled and the crown portion is interposed between the outer end of the barrel. 
     
     
         6 . The component of  claim 5 , wherein the crown portion includes an angled portion and a recessed portion wherein the recessed portion defines a pocket that recesses the angled portion from the outer end of the barrel. 
     
     
         7 . The component of  claim 6 , wherein the angled portion defines an angle of approximately 45 degrees and is approximately 0.027 inches in depth. 
     
     
         8 . The component of  claim 7 , wherein the recessed portion is parallel to the axis of the barrel path and has a depth of 0.018 inches. 
     
     
         9 . A semiautomatic pistol, comprising:
 a frame;   a trigger assembly mounted on the frame;   a slide mounted on the frame;   a barrel member defining an interior path and an outer surface, the barrel member having a first and a second end and being positioned within the trigger assembly;   a firing chamber attached to the first end of the barrel member;   a pivoting assembly coupled to the firing chamber to permit the barrel component to pivot in a frame when the firearm is fired;   wherein the outer surface of the barrel member includes a plurality of indentations that increase the surface area to dissipate heat and to reduce frictional engagement between the slide and the outer surface of the barrel member.   
     
     
         10 . The component of  claim 9 , wherein the dimples have a depth of approximately 0.015 inches and the diameters are approximately 0.375 inches with the center of the dimples being in these examples 0.250 inches apart. 
     
     
         11 . The component of  claim 10 , wherein the barrel has a length of approximately 4.00 inches. 
     
     
         12 . The component of  claim 11 , wherein the barrel member has a crown portion that is positioned adjacent the outer end of the barrel. 
     
     
         13 . The component of  claim 13 , wherein the barrel member is rifled and the crown portion is interposed between the outer end of the barrel. 
     
     
         14 . The component of  claim 14 , wherein the crown portion includes an angled portion and a recessed portion wherein the recessed portion defines a pocket that recesses the angled portion from the outer end of the barrel. 
     
     
         15 . The component of  claim 15 , wherein the angled portion defines an angle of approximately 45 degrees and is approximately 0.027 inches in depth. 
     
     
         16 . The component of  claim 16 , wherein the recessed portion is parallel to the axis of the barrel path and has a depth of 0.018 inches. 
     
     
         17 . A firearm barrel component for a semiautomatic pistol, the barrel component comprising:
 a barrel member defining an interior path and an outer surface, the barrel member having a first and a second end;   a firing chamber attached to the first end of the barrel member;   a pivoting assembly coupled to the firing chamber to permit the barrel component to pivot in a frame when the firearm is fired; and   a crown portion formed adjacent an outer end of the barrel member wherein the crown portion includes an angled portion to dissipate gasses and a recessed portion that recesses the angled portion.   
     
     
         18 . The component of  claim 17 , wherein the outer surface of the barrel member includes a plurality of indentations that increase the surface area to dissipate heat. 
     
     
         19 . The component of  claim 18 , wherein the dimples have a depth of approximately 0.015 inches and the diameters are approximately 0.375 inches with the center of the dimples being in these examples 0.250 inches apart. 
     
     
         20 . The component of  claim 19 , wherein the barrel has a length of approximately 4.00 inches. 
     
     
         21 . The component of  claim 17 , wherein the barrel member is rifled and the crown portion is interposed between the outer end of the barrel. 
     
     
         22 . The component of  claim 21 , wherein the crown portion includes an angled portion and a recessed portion wherein the recessed portion defines a pocket that recesses the angled portion from the outer end of the barrel. 
     
     
         23 . The component of  claim 22 , wherein the angled portion defines an angle of approximately 45 degrees and is approximately 0.027 inches in depth. 
     
     
         24 . The component of  claim 23 , wherein the recessed portion is parallel to the axis of the barrel path and has a depth of 0.018 inches. 
     
     
         25 . A firearm comprising:
 a frame;   a trigger assembly mounted on the frame;   a slide mounted on the frame;   a barrel member defining an interior path and an outer surface, the barrel member having a first and a second end;   a firing chamber attached to the first end of the barrel member;   a pivoting assembly coupled to the firing chamber to permit the barrel component to pivot in the frame when the firearm is fired; and   a crown portion formed adjacent an outer end of the barrel member wherein the crown portion includes an angled portion to dissipate gasses and a recessed portion that recesses the angled portion.   
     
     
         26 . The component of  claim 25 , wherein the outer surface of the barrel member includes a plurality of indentations that increase the surface area to dissipate heat. 
     
     
         27 . The component of  claim 26 , wherein the dimples have a depth of approximately 0.015 inches and the diameters are approximately 0.375 inches with the center of the dimples being in these examples 0.250 inches apart. 
     
     
         28 . The component of  claim 27 , wherein the barrel has a length of approximately 4.00 inches. 
     
     
         29 . The component of  claim 25 , wherein the barrel member is rifled and the crown portion is interposed between the outer end of the barrel. 
     
     
         30 . The component of  claim 29 , wherein the crown portion includes an angled portion and a recessed portion wherein the recessed portion defines a pocket that recesses the angled portion from the outer end of the barrel. 
     
     
         31 . The component of  claim 30 , wherein the angled portion defines an angle of approximately 45 degrees and is approximately 0.027 inches in depth. 
     
     
         32 . The component of  claim 31 , wherein the recessed portion is parallel to the axis of the barrel path and has a depth of 0.018 inches.