About 49 results
https://drivepatents.com/patents/1006931 · 21 Dec 2011
A power tool includes a housing coupled to an electrical power source, a motor contained in the housing, and a motor control circuit that controls output speed of the motor. A light unit is coupled to the housing to illuminate a work surface. A light unit ...
https://drivepatents.com/patents/1008053 · 2 Nov 2011
An improved laser line generating device is provided for use in construction layout tasks. The laser line generating device is comprised of a first laser light generator operable to emit from a housing a first plane of light having a fan angle greater than...
https://drivepatents.com/patents/1008662 · 12 Oct 2011
A power tool system comprising: a tool assembly having a motor; a battery pack that selectively couples to the tool assembly and operates to provide power to the motor; and a discharge control module arranged to monitor a parameter indicative of tool opera...
https://drivepatents.com/patents/1009558 · 14 Sep 2011
A battery pack charger detects whether a terminal of the charger is disconnected from a first node between cells of a battery pack docked in the charger. The charger comprises a first resistor connected to the terminal, a second resistor connected in serie...
https://drivepatents.com/patents/1012575 · 1 Jun 2011
A power cutter comprising: a housing 2; a two stroke internal combustion engine 24 mounted within the housing 2; a throttle switch by which the engine can be accelerated when the engine is running; a support arm 7 mounted on the housing and which projects ...
https://drivepatents.com/patents/1015006 · 16 Mar 2011
A portable power driven system has a manually movable frame. In one example, an internal combustion engine and a generator device that generates AC power are supported on the frame. The internal combustion engine drives the generator device. An electricall...
https://drivepatents.com/patents/1067252 · 24 May 2006
A measuring and leveling tool has a distance encoder which is movable along a surface. The tool determines a distance traveled by the measuring device. The distance traveled is displayed in a digital display. The tool includes a laser leveling device which...
https://drivepatents.com/patents/1069164 · 22 Mar 2006
Method of determining the identity of a battery pack (62) comprising the steps of discharging a capacitive component (82) of a battery pack circuit of the battery pack; initiating recharging of the capacitive component after the capacitive component is sub...
https://drivepatents.com/patents/1071317 · 4 Jan 2006
A trigger switch suitable for use in a power tool is described, comprising a trigger having first and second elongate switching members displaced against a resilient biasing force and into engagement with two respective switching elements. Displacing the t...
https://drivepatents.com/patents/1074963 · 17 Aug 2005
A laser calibration device includes a housing and a pendulum pivotally coupled to the housing and suspending downwards therefrom. A laser deck is mounted to the pendulum. At least one laser for emitting a laser line is mounted to the laser deck. The laser ...