Patent application number | Description | Published |
20080196915 | Vehicle control system - A vibration reduction apparatus for use with a hammer tool having a hammer piston is disclosed. The hammer piston is caused to reciprocate in the cylinder by rotation of a gear wheel and crank drive. A cam is mounted around the gear wheel, a counterweight surrounds the piston cylinder, and a cam follower is provided on the counterweight. The cam follower on the counterweight is urged into contact with the cam by a biasing element. The external profile of the cam is such that rotation of the gear wheel causes oscillation of the counterweight in antiphase to motion of the hammer piston to counteract vibrations produced by operation of the hammer action of the tool. A mechanism is provided to deactivate the vibration reduction apparatus when the hammer action of the tool is deactivated. | 08-21-2008 |
20090056967 | HAMMER - A hammer comprising a housing | 03-05-2009 |
20090188689 | HAMMER DRILL - A hammer drill having an outer housing defining a handle is disclosed. The tool includes transmission housing including a drive mechanism and a motor, wherein the transmission housing is moveably mounted in the outer housing by means of arms for movement relative to the outer housing along a non-linear path between a first position, corresponding to no force being applied by a user to the outer housing of the tool, and a second position, corresponding to the user applying a force to the outer housing when the working member of the tool engages a workpiece. Springs bias the transmission housing towards the first position. The direction of travel of the drive mechanism relative to the outer housing at a particular point on the non-linear path is arranged to coincide with the direction of the dominant vibration occurring in the drive mechanism relative to the outer housing when a particular force is applied to the outer housing to move the drive mechanism relative to the outer housing to that point on the non-linear path against the biasing force of the biasing means. | 07-30-2009 |
20090188692 | MOUNTING ASSEMBLY FOR HANDLE FOR POWER TOOL - A mounting assembly for moveably mounting a handle of a power tool to a housing of the power tool is disclosed. The mounting assembly has a metal bar ( | 07-30-2009 |
20100200380 | Switch Assembly for a Power Tool - A switch assembly for a power tool comprises a switch member and a fixing part. The switch member comprises a finger grip part, a retaining part for retaining the switch member on a power tool, and an opening extending at least partially through the switch member, the retaining part arranged to project laterally with respect to an axis of the opening. The fixing part is arranged to be located in the opening. The switch assembly is arranged such that when the fixing part is at a first location in the opening, the retaining part adopts a retention configuration in which it projects laterally to a predetermined extent. When the fixing part is removed or at a second location in the opening, the retaining part adopts an insertion configuration in which it does not project laterally or projects less than the predetermined extent. | 08-12-2010 |