Hole saw

Abstract

A hole saw includes a base member configured to secure the hole saw to a drive device and a plurality of blade members extending orthogonally to the base member. The blade members are configured to cut into a structure to form a polygonal opening in the structure in response to rotational movement of the hole saw by the drive device. Each blade member is attached to the base member in a fixed position relative to the base member and has cutting teeth extending in a respective cutting direction. First and second blade members of the plurality are disposed parallel to each other and have I-shaped faces that face each other. Third and fourth blade members of the plurality are disposed parallel to each other and have I-shaped faces that face each other.

What is claimed is: 
     
         1 . A hole saw, comprising:
 a base member configured to secure the hole saw to a drive device; and   a plurality of blade members extending orthogonally to the base member, the plurality of blade members configured to cut into a structure to form a polygonal opening in the structure in response to rotational movement of the hole saw by the drive device relative to the structure, each blade member attached to the base member in a fixed position relative to the base member, each blade member having cutting teeth extending in a respective cutting direction, a first blade member of the plurality disposed parallel to a second blade member of the plurality wherein an I-shaped face of the first blade member faces an I-shaped face of the second blade member, a third blade member of the plurality disposed parallel to a fourth blade member of the plurality wherein an I-shaped face of the third blade member faces an I-shaped face of the fourth blade member.   
     
     
         2 . The hole saw of  claim 1 , wherein the I-shaped face of each of the first, second, third, and fourth blade members is formed by:
 a sawing portion having the respective cutting teeth extending in the respective cutting direction;   a stabilizer connected to the base member and extending in the respective cutting direction; and   an extender connecting the respective sawing portion to the respective stabilizer, wherein a dimension of the respective extender in the cutting direction is less than a dimension of the stabilizer in the cutting direction and less than a dimension of the sawing portion in the cutting direction.   
     
     
         3 . The hole saw of  claim 1 , wherein the base member comprises a planar base member. 
     
     
         4 . The hole saw of  claim 1 , wherein an upper edge of each blade member of the plurality has the cutting teeth arcuately-shaped. 
     
     
         5 . The hole saw of  claim 1 , wherein the cutting teeth of each blade member of the plurality located near a medial location of the respective blade member are located a greater distance from the base member than the cutting teeth located near a distal end of the respective blade member. 
     
     
         6 . A hole saw, comprising:
 a base member configured to secure the hole saw to a drive device; and   a plurality of blade members, each blade member connected to and disposed orthogonally to the base member via a respective stabilizer, each blade member having a sawing portion with respective cutting teeth extending in a respective cutting direction, and wherein distances between the cutting teeth and the base member vary along the respective cutting direction of the respective blade members, and wherein each base member has a respective extender extending between the respective stabilizer and the respective sawing portion of the respective blade member, and wherein a dimension of each respective extender in the respective cutting direction of the respective blade member is less than a dimension of the respective sawing portion and a dimension of the respective stabilizer of the respective blade member in the respective cutting direction.   
     
     
         7 . The hole saw of  claim 6  wherein an edge of each blade member having the respective cutting teeth is arcuately-shaped. 
     
     
         8 . The hole saw of  claim 6 , wherein the respective distances at a medial location of each blade member is greater than the respective distances at distal ends of the respective blade members. 
     
     
         9 . The hole saw of  claim 6 , wherein a first one of the blade members is located orthogonal to a second one of the blade members. 
     
     
         10 . The hole saw of  claim 6 , wherein each blade member extends contiguously from the base member.