Power trowel fastening assembly

Abstract

This disclosure provides a power-trowel fastening apparatus comprising an arm, a resurfacing tool, and a fastening system. The resurfacing tool is positioned underneath the arm and is connected to the first arm. The resurfacing tool also has a surface side and a fastening side. The fastening system sits between the first arm and the resurfacing tool and includes a peg, an aperture, a magnet, and a magnet recess. Both the peg and the magnet extend from the fastening side of the resurfacing tool. Both the aperture and the magnet recess reside along the bottom of the first arm and are configured to the dimensions and locations of the peg and the magnet on the resurfacing tool. The magnet and the peg fit within the aperture and the magnet recess, respectively, when the resurfacing tool is positioned underneath the first arm.

What is claimed is: 
     
         1 . A power trowel comprising:
 a handle;   a housing assembly coupled to, and extending from, the handle;   a motor positioned above the housing assembly, the motor including a drive mechanism, the drive mechanism configured to provide rotational motion;   an arm coupled to, and extending radially from, the drive mechanism;   a resurfacing tool positioned underneath the arm, the resurfacing tool being connected to the arm and having a surface side and a fastening side; and   a fastening system between the arm and the resurfacing tool, the fastening system including:
 a peg extending from the fastening side of the resurfacing tool; 
 an aperture along the bottom of the arm, the aperture configured to the dimensions and location of the peg on the resurfacing tool; 
 a magnet extending from the fastening side of the resurfacing tool; and 
 a magnet recess along the bottom of the arm, the magnet recess configured to the dimensions and location of the magnet on the resurfacing tool, wherein the magnet and the peg fit within the aperture and the magnet recess, respectively, when the resurfacing tool is positioned underneath the arm. 
   
     
     
         2 . A power-trowel fastening apparatus comprising:
 a first arm;   a resurfacing tool positioned underneath the first arm, the resurfacing tool being connected to the first arm and having a surface side and a fastening side; and   a fastening system between the arm and the resurfacing tool, the fastening system including:
 a peg extending from the fastening side of the resurfacing tool; 
 an aperture along the bottom of the arm, the aperture configured to the dimensions and location of the peg on the resurfacing tool; 
 a magnet extending from the fastening side of the resurfacing tool; and 
 a magnet recess along the bottom of the arm, the magnet recess configured to the dimensions and location of the magnet on the resurfacing tool, wherein the magnet and the pin fit within the aperture and the recess, respectively, when the resurfacing tool is positioned underneath the first arm. 
   
     
     
         3 . The fastening apparatus of  claim 2 , wherein the first arm is parallel to a working surface. 
     
     
         4 . The fastening apparatus of  claim 2 , the first arm further having a cavity extending vertically through the first arm and exposing a portion of the fastening side of the resurfacing tool. 
     
     
         5 . The fastening apparatus of  claim 2 , the first arm further having a second arm, the second arm being perpendicular to the first arm and located at the distal end of the first arm, the second arm having an aperture along the bottom of the second arm and a magnet recess along the bottom of the second arm and wherein the magnet and the peg fit within the aperture and the recess, respectively, when the resurfacing tool is positioned underneath the second arm. 
     
     
         6 . The fastening apparatus of  claim 5 , the resurfacing tool further having a support edge parallel to the second arm, the support edge extending from the fastening surface of the resurfacing tool and having a peg and a magnet extend from the support edge parallel to the fastening surface, the second arm having an aperture along the back of the second arm and a magnet recess along the back of second and wherein the peg and the magnet fit into the aperture and magnet recess, respectively, when the resurfacing tool is positioned underneath the first arm and behind the second arm. 
     
     
         7 . The fastening apparatus of  claim 2 , the apparatus further including a second arm attached to the fastening side of the resurfacing tool, wherein the peg and the magnet extend from the second arm. 
     
     
         8 . A resurfacing tool for use with an arm, the arm having an aperture along the bottom of the arm and a magnet recess along the bottom of the arm, the resurfacing tool comprising:
 a surface side;   a fastening side;   a peg extending from the fastening side of the resurfacing tool, the peg configured to the dimensions and location of the aperture along the bottom of the arm; and   a magnet extending from the fastening side f the resurfacing tool, the magnet configured to the dimensions and location of the magnet recess along the bottom of the arm, wherein the magnet and the peg fit within the aperture and magnet recess, respectively when the resurfacing tool is positioned underneath the arm.