Variable speed drill

Abstract

A variable speed drill includes a housing and a motor within the housing. The motor has (a) a motor field lamination diameter greater than 65 mm, (b) a motor current rating greater than 8 amps, (c) a motor power level greater than 600 Watts, (d) a maximum torque level at the chuck greater than 580 in-lbs, (e) a weight greater than 5.5 pounds or (f) a maximum speed less than 550 rpm. A mixing implement is rotationally coupled to the motor. A variable speed switch is mounted to the housing and is operable to vary a rotational speed of the motor and therefore of the mixing implement.

1 . A variable speed drill comprising: 
 a housing;    a motor within the housing having a lamination length of at least 30 millimeters and a lamination diameter of at least 65 millimeters;    a variable speed switch mounted to the housing and operable to vary a power output of the motor.    
   
   
       2 . The variable speed drill of  claim 1 , wherein the housing defines a handle, and the variable speed switch is mounted to the handle.  
   
   
       3 . The variable speed drill of  claim 1 , wherein the variable speed switch is operable in a first position and a second position.  
   
   
       4 . The variable speed drill of  claim 3 , wherein movement of the variable speed switch from the first position to the second position increases the power output of the motor.  
   
   
       5 . The variable speed drill of  claim 1 , further comprising a mixing implement rotationally coupled to the motor.  
   
   
       7 . A variable speed drill comprising: 
 a housing;    a motor within the housing having a motor current rating greater than 8 amps;    a variable speed switch mounted to the housing and operable to vary a power output of the motor.    
   
   
       8 . The variable speed drill of  claim 7 , wherein the housing defines a handle, and the variable speed switch is mounted to the handle.  
   
   
       9 . The variable speed drill of  claim 7 , wherein the variable speed switch is operable in a first position and a second position.  
   
   
       10 . The variable speed drill of  claim 9 , wherein movement of the variable speed switch from the first position to the second position increases the power output of the motor.  
   
   
       11 . The variable speed drill of  claim 7 , further comprising a mixing implement rotationally coupled to the motor.  
   
   
       12 . A variable speed drill comprising: 
 a housing;    a motor within the housing having a motor power level greater than 600 Watts;    a variable speed switch mounted to the housing and operable to vary a power output of the motor.    
   
   
       13 . The variable speed drill of  claim 12 , wherein the housing defines a handle, and the variable speed switch is mounted to the handle.  
   
   
       14 . The variable speed drill of  claim 12 , wherein the variable speed switch is operable in a first position and a second position.  
   
   
       15 . The variable speed drill of  claim 14 , wherein movement of the variable speed switch from the first position to the second position increases the power output of the motor.  
   
   
       16 . The variable speed drill of  claim 12 , further comprising a mixing implement rotationally coupled to the motor.  
   
   
       17 . A variable speed drill comprising: 
 a housing;    a motor within the housing having a maximum speed less than 550 rpm;    a variable speed switch mounted to the housing and operable to vary a power output of the motor.    
   
   
       18 . The variable speed drill of  claim 17 , wherein the housing defines a handle, and the variable speed switch is mounted to the handle.  
   
   
       19 . The variable speed drill of  claim 17 , wherein the variable speed switch is operable in a first position and a second position.  
   
   
       20 . The variable speed drill of  claim 19 , wherein movement of the variable speed switch from the first position to the second position increases the power output of the motor.  
   
   
       21 . The variable speed drill of  claim 17 , further comprising a mixing implement rotationally coupled to the motor.  
   
   
       22 . A variable speed drill comprising: 
 a housing;    a motor within the housing;    a gear reduction mechanism drivingly connected to said motor;    a chuck drivingly connected to said gear reduction mechanism, wherein said drill has a maximum torque level at the chuck greater than 580 in-lbs; and    a variable speed switch mounted to the housing and operable to vary a power output of the motor.    
   
   
       23 . The variable speed drill of  claim 22 , wherein the housing defines a handle, and the variable speed switch is mounted to the handle.  
   
   
       24 . The variable speed drill of  claim 22 , wherein the variable speed switch is operable in a first position and a second position.  
   
   
       25 . The variable speed drill of  claim 24 , wherein movement of the variable speed switch from the first position to the second position increases the power output of the motor.  
   
   
       26 . The variable speed drill of  claim 22 , further comprising a mixing implement rotationally coupled to the motor.  
   
   
       27 . A variable speed drill comprising: 
 a housing;    a motor within the housing having a lamination length of at least 30 millimeters and a lamination diameter of at least 65 millimeters and having a motor current rating greater than 8 amps and having a motor power level greater than 600 Watts;    a gear reduction mechanism drivingly connected to said motor;    a chuck drivingly connected to said gear reduction mechanism, wherein said drill has a maximum torque level at the chuck greater than 580 in-lbs    a variable speed switch mounted to the housing and operable to vary a power output of the motor; and    a mixing implement rotationally coupled to the chuck.    
   
   
       28 . The variable speed drill of  claim 27 , wherein said drill has a weight greater than 5.5 pounds.