Power tool with spindle lock
First Claim
1. A power tool comprising:
- a housing assembly;
a motor including a rotating armature shaft disposed within said housing assembly;
a spindle carried externally with said housing assembly for relative rotation about a drive axis;
a drivetrain interconnecting said motor armature shaft and spindle for the application of torque therebetween upon the electrical energization of said motor;
a lock member carried with said housing assembly, said lock member selectively displaceable along a fixed axis between a locked position in which a first end portion of said lock member engages a rotating element of said drivetrain to prevent rotation of said spindle and a released position in which said first end portion of said lock member is spaced from said rotating element to permit rotation of said spindle;
means operative to continuously resiliently urge said lock member toward said released position; and
a lever carried externally of said housing assembly and engaging said lock member, said lever manually operable to displace said lock member from said released position to said locked position.
0 Assignments
0 Petitions
Accused Products
Abstract
A spindle lock equipped hand-held power tool, such as a grinder or circular saw, includes a housing assembly, a motor including a rotating armature shaft, a spindle carried externally of the housing adapted for selectively affixing and releasing a rotating cutting tool and a drive train which drivingly interconnects the motor armature shaft and spindle for the application of torque to the tool upon electrical energization of the motor. A lock member carried in the housing is selectively displaceable along a fixed axis between a locked position wherein it engages a rotating element of the drive train to prevent rotation of the spindle, and a released position. A spring continuously urges the lock member toward the released position. A manually operable lever selectively displaces the lock member between the released and locked positions.
50 Citations
17 Claims
-
1. A power tool comprising:
-
a housing assembly; a motor including a rotating armature shaft disposed within said housing assembly; a spindle carried externally with said housing assembly for relative rotation about a drive axis; a drivetrain interconnecting said motor armature shaft and spindle for the application of torque therebetween upon the electrical energization of said motor; a lock member carried with said housing assembly, said lock member selectively displaceable along a fixed axis between a locked position in which a first end portion of said lock member engages a rotating element of said drivetrain to prevent rotation of said spindle and a released position in which said first end portion of said lock member is spaced from said rotating element to permit rotation of said spindle; means operative to continuously resiliently urge said lock member toward said released position; and a lever carried externally of said housing assembly and engaging said lock member, said lever manually operable to displace said lock member from said released position to said locked position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification