A hand tool of a type where relative movement between operative elements is required. The hand tool includes a handpiece (C) and a separate fluid displacement device (P) which are coupled together by a flexible hose (H). The handpiece (C) has a fixed blade (36) and a movable blade (34). The displacement unit (P) has a handle (10) which can be moved relative to a ground engageable foot (18) thereby causing a piston (16) to displace fluid along the hose (H) and drive a piston (28) in handpiece (C)...

The flooring tool includes a slide hammer located in an elongate body. The body having a flat bottom for resting on the upper surface of the newly laid down tongue and groove flooring. The elongate body, in which the slide hammer is mounted, has at one end a depending hammer head which has an edge corresponding in shape to the edge of the tongue and groove flooring being laid. By manipulating the slide hammer, the hammer head sets the tongue and groove flooring being laid into place.

A handheld soldering tool has a fuel reservoir or tank (10), a tip (1) heated in use by a catalyst assembly (2), a valve assembly (9) for controlling flow of gaseous fuel from the reservoir (10) to the catalyst assembly (2), and a piezo-electric ignition device (7) for igniting gas released from tank (10) for combustion during an initial warm-up period to bring the catalyst to its operating temperature. A spring member (19) mounted on a rocker member (17) serving to transmit an actuating force f...

Tool arrays for biomedical surgery where the tools consist of layered polymer micromuscles arranged to induce geometrical changes and movements via an electrochemically induced change of volume in at least one polymer layer. The tool or tool arrays are mounted on a carrier having the form of a needle being inserted into a cannula/catheter through which the tools can be electrically actuated via external means to induce a mechanical movement to act upon biological structures.

An electrically powered hand tool is disclosed. The tool includes a motor, a power source, a work element and a controller. Various alternative features, embodiments and operative configurations are disclosed. The electrically powered hand tool may be a drill/driver configured to interrupt the rotation of the work element responsive to detection of a torque that exceeds a predetermined torque threshold.

An electrically powered hand tool is disclosed. The tool includes a motor, a power source, a work element and a controller. Various alternative features, embodiments and operative configurations are disclosed.

Power tools are taught that may include, for example, means for detecting impact sounds generated, e.g. by a hammer strikes an anvil or by oil pulse from an oil unit. The detecting means may include a receiver (30) adapted to selectively convert sound within a narrow frequency range into electric signals. Preferably, the impact sounds fall within the narrow frequency range of the receiver (30). A processor 38 may be utilized to control the motor (22) in order to stop the rotation of the hammer w...

A downhole shut-in tool includes in one aspect a pilot valve which when opened places a differential pressure across a piston which in turn operably engages a shut-in valve element to close the shut-in tool. An electronic timer assembly and electric drive motor are provided for controlling the action of the pilot valve. The drive motor is controlled by a load sensor which senses that the motor has stalled when an actuator engages a movement limiting abutment. In another aspect a pilot valve is p...

A drive shaft 40 extends through a ram 42. The ram can be driven up and down by rotating a screw shaft 35. The ram carries with it a motor 44 which drives a pulley 36 connected to the top of the shaft 40 for rotating that shaft 40. The ram 42 can be rotated upon operation of a motor 60 which drives a worm 62 to engage a worm wheel 64 which surrounds the ram 42 and is fast therewith.

An abrasive tool such as a drill bit has a body with a working face (10). Undercut recesses (12) are formed in the working face (10). Cutting inserts (16) which present working ends (20) are located in the recesses (12). Locking means (24) in the recesses engage between the undercuts (14) and formations (22) on the inserts (16). This locks the inserts (16) against withdrawal from the recesses (12).