Various aspects of tape measures with one or more of a sensor, a motor, and a clutch, are shown. The sensors described herein detect, through various mechanisms, the position of the retraction system of a tape measure. The measurements by the sensors may be used to control a motor to adjust an amount of tension in the spiral spring of a tape measure. In various embodiments a motor interacts with the retraction system of the tape measure via a clutch, which moderates an amount of force that the motor can communicate to the retraction system.

Various aspects of tape measures with one or more of a sensor, a motor, and a clutch, are shown. The sensors described herein detect, through various mechanisms, the position of the retraction system of a tape measure. The measurements by the sensors may be used to control a motor to adjust an amount of tension in the spiral spring of a tape measure. In various embodiments a motor interacts with the retraction system of the tape measure via a clutch, which moderates an amount of force that the motor can communicate to the retraction system.

A tape measure comprises a housing containing a tape, spring, reel, and hub, with first seal(s) to seal between the reel cartridge and the hub and/or to seal between the reel and the housing and/or a part fixed to the housing. An outermost coil of the spring may extend out of an opening in the reel and be attached to an innermost coil of the tape, and a second seal may be provided on the reel, to seal between the spring and the reel where the spring extends from the reel. Alternatively, the spring may be contained within the reel, and an outermost coil of the spring may be attached to an interior of the reel. An exterior of the reel may include an attachment portion to which an innermost coil of the tape is attached. The housing may be openable to enable contaminants to be removed from the housing.

A tape measure comprises a housing containing a tape, spring, reel, and hub, with first seal(s) to seal between the reel cartridge and the hub and/or to seal between the reel and the housing and/or a part fixed to the housing. An outermost coil of the spring may extend out of an opening in the reel and be attached to an innermost coil of the tape, and a second seal may be provided on the reel, to seal between the spring and the reel where the spring extends from the reel. Alternatively, the spring may be contained within the reel, and an outermost coil of the spring may be attached to an interior of the reel. An exterior of the reel may include an attachment portion to which an innermost coil of the tape is attached. The housing may be openable to enable contaminants to be removed from the housing.

A tool, such as a tape measure, including a spring-based retraction system is shown. The tape measure includes a fluid-based retraction speed controller. The speed controller may be formed from a rotor/stator arrangement. The rotor is coupled to the reel and the stator is coupled to the housing opposing the rotor. The rotor converts some rotational energy from tape reel into movement of a fluid (e.g., movement of air, movement of oil, etc. through friction) which acts to slow or limit the retraction/rotational speed of the reel as the retraction spring expands driving the reel during tape blade retraction.

A tool, such as a tape measure, including a spring-based retraction system is shown. The tape measure includes a fluid-based retraction speed controller. The speed controller may be formed from a rotor/stator arrangement. The rotor is coupled to the reel and the stator is coupled to the housing opposing the rotor. The rotor converts some rotational energy from tape reel into movement of a fluid (e.g., movement of air, movement of oil, etc. through friction) which acts to slow or limit the retraction/rotational speed of the reel as the retraction spring expands driving the reel during tape blade retraction.

A deployable stabilizer cooperates with a tape of a tape measure to stabilize the tape measure with the tape extended therefrom to facilitate hands free stability of the tape measure. The stabilizer may be pivotally coupled with a body of the tape measure to facilitate pivoting between a deployed and a stowed position. The stabilizer may comprise an extendable member that is guided by channels defined by tape measure body. Locations or orientations of pivot holes or channel guides may result in contact of the bottom of the tape in an extended position with a top of the stabilizer in a deployed position to facilitate stability of the tape measure body.

A deployable stabilizer cooperates with a tape of a tape measure to stabilize the tape measure with the tape extended therefrom to facilitate hands free stability of the tape measure. The stabilizer may be pivotally coupled with a body of the tape measure to facilitate pivoting between a deployed and a stowed position. The stabilizer may comprise an extendable member that is guided by channels defined by tape measure body. Locations or orientations of pivot holes or channel guides may result in contact of the bottom of the tape in an extended position with a top of the stabilizer in a deployed position to facilitate stability of the tape measure body.

A tape measure may include a housing including an interior space and a brake opening in communication with the interior space, a reel rotatably supported within the interior space, a tape blade at least partially wound on the reel, and a finger brake positioned adjacent the brake opening. The finger brake may include a support frame attached to the housing and including a frame opening, and a flexible member attached to the support frame and extending over the frame opening. The flexible member may be configured to deflect or elastically deform from a released position in which the flexible member is spaced apart from the tape blade to an engaged position in which at least a portion of the flexible member contacts a portion of the tape blade.

A tool, such as a tape measure, including a spring-based retraction system is shown. The retraction system utilizes an epicyclic gear train coupled between the tape blade winding reel and a rotating arbor or axle within the tape measure. A spiral spring has an outer end coupled to the reel and an inner end coupled to the axle. The gear train may be a reduction gear train such that the axle rotates slower than the reel. By coupling the spiral spring between the gear train input and gear train output, high energy density springs may be used, which may allow for decrease in housing size, increase in tape length or thickness for a given housing size, and/or advantageous retraction speed control.