Abstract: An auxiliary device for an electric nail gun header structure mainly inserts a head cover body adapted to position and lock a nail gun header with an extended locking frame; the end of the head cover body is used to cover the end of a gun body completely; the bottom of the head cover body is extend with two flange sheets opposite to each other to cover the two sides of a grip of the nail gun, forming particular, stable covering. Therefore, the head cover structure will not be displaced or rotated upon one-handed operation, thereby ensuring the convenience and safety of the operation of the nail gun.

Abstract: An electric nail gun structure is disclosed. A gun head seat body is formed into a structure with inner and outer cover layers, allowing a rotating rod and a slide piece moving a pull nail linearly to be configured inside it; the gun head seat body is formed completely by having a steel sleeve with equidistantly spaced slide chutes on the inside thereof covered with a plastic contact layer, where the slide chutes allows projecting ribs configured on the steel slide piece to be in engagement therewith so that a stable and safe nail pull operation can be obtained. Furthermore, a length extensible and width adjustable auxiliary handle rod is configured on the outside of the gun head seat body allowing nail gun seat bodies for all kinds of electric, pneumatic drills to be operated conveniently and safely with one single hand.

Abstract: A power tool combination includes a power driving device having a chuck device attached to a barrel for engaging with a driven tool member, a control ferrule engaged onto the barrel, and a non-circular member, and a tool device includes a housing having a bore for receiving the driven tool member, and having a compartment for receiving the barrel, and having a non-circular engaging member for engaging with the non-circular member and for allowing the housing to be rotated by the power driving device. The tool device includes a tool element attached to the housing, and a securing device for detachably attaching the tool element to the housing.

Abstract: A tool combination includes a shaft having a non-circular segment, a tool carrying head having a stud pivotally mounted to the shaft, and a sleeve slidably engaging onto the shaft and having a compartment formed in one end for receiving the end portion of the shaft and the stud of the tool carrying head and for retaining the stud of the tool carrying head in line with the shaft, and one end of the shaft is engageable with a power driving tool for being driven by the power driving tool automatically, and the non-circular segment of the shaft is engageable with a non-circular space of the sleeve for allowing the shaft to be selectively rotated by the sleeve manually.

Abstract: A tool retaining device includes a housing having an engaging hole and having a chamber for slidably receiving a tool stem, the tool stem includes a socket opening for receiving a tool member which is also slidably engaged in the engaging hole of the housing, for allowing the tool member to be rotated by either the tool stem or the housing. The tool member may also be moved relative to the housing for changeably coupling tool members or tool bits having different lengths, and may be selectively moved into the housing, for allowing another tool element to be selectively engaged with the engaging hole of the housing when the tool member is moved into the housing.

Abstract: A tool retaining device includes a tool stem having a compartment for receiving a tool member, and one or more apertures and one or more openings for receiving one or more detent and one or more locking balls, and a barrel engaged onto the tool stem and having one or more peripheral slots and peripheral recesses for selectively receiving the detents and the locking balls respectively, and the barrel includes a peripheral actuator for actuating the detent to engage with the tool member, and another actuator for actuating the locking ball to rotatably securing the tool member to the tool stem when the peripheral actuator is disengaged from the detent.

Abstract: A tool device includes a shaft having a noncircular socket opening for slidably and tiltably receiving a three-dimensional engaging member of a tool member for allowing the tool member to be tilted relative to the shaft to different angular position, and the shaft includes an engaging hole for receiving a driven member, a control ferrule may retain the shaft in line with the tool member, and a sleeve includes a non-circular opening for engaging with another driven member, the sleeve is rotatable in concert with the shaft for allowing the driven members of different diameters or dimensions to be selectively rotated or driven by the shaft and the sleeve.

Abstract: A driving tool includes a tool stem having a non-circular spatial engaging member and having one or more flat surfaces, a tool shank having a non-circular socket opening and having one or more curved surfaces for pivotally receiving the spatial engaging member of the tool stem and for allowing the tool shank to be selectively tilted relative to a longitudinal axis of the tool stem. A control ferrule is slidably engaged onto the tool shank and slidable and engageable onto the tool stem for retaining the tool shank in line with the longitudinal axis of the tool stem and for preventing the tool shank from being tilted relative to the tool stem to other angular position.

Abstract: A tool device includes a tool shank having a noncircular engaging hole for slidably receiving a socket member which includes a noncircular bore for engaging with various fasteners, a biasing device may bias the socket member outwardly relative to the engaging hole of the tool shank, and an anchoring device may detachably and slidably anchor the socket member to the tool shank. One or more socket members may be replaced with each other for driving various tool members of different sizes or diameters or dimensions. A control ferrule may be slidably engaged onto the tool shank and selectively engageable with the detent and for selectively forcing the detent to engage with the socket member.

Abstract: A tool device includes a tool shank having a noncircular engaging hole for slidably receiving a socket member which includes a noncircular bore for engaging with various fasteners, a biasing device may bias the socket member outwardly relative to the engaging hole of the tool shank, and an anchoring device may slidably anchor the socket member to the tool shank. One or more socket members may be replaced with each other and may be selectively engaged into the engaging hole of the tool shank, for receiving and driving various tool members of different sizes or diameters or dimensions.

Abstract: A driving tool includes a tool stem having a non-circular spatial engaging member and having one or more flat surfaces, a tool shank having a non-circular socket opening and having one or more curved surfaces for pivotally receiving the spatial engaging member of the tool stem and for allowing the tool shank to be selectively tilted relative to a longitudinal axis of the tool stem. A control ferrule is slidably engaged onto the tool shank and slidable and engageable onto the tool stem for retaining the tool shank in line with the longitudinal axis of the tool stem and for preventing the tool shank from being tilted relative to the tool stem to other angular position.

Abstract: A tool connecting device includes a shaft having a non-circular socket opening for receiving a non-circular rotatable member of a tool member to allow the tool member to be selectively tilted relative to the shaft to different angular position. A protrusion is extended from the tool member for engaging with the shaft to anchor the rotatable member to the shaft and to prevent the tool member from being tilted relative to the shaft. A control ferrule may be slidably engaged onto the shaft to selectively retain the tool member in line with the shaft and to prevent the tool member from being tilted relative to the shaft, or to allow the tool member to be slanted and tilted relative to the shaft to different angular position.

Abstract: A driving tool includes a driving shank having a handle for rotating the driving shank and having an engaging hole formed by two or more spring blades for receiving a fastener, and an actuating device for actuating the spring blades to move radially inward and to force and grasp the fastener to the driving shank, for preventing the fastener from being disengaged from the driving tool inadvertently. The actuating device may include a barrel slidably engaged onto the driving shank for moving the spring blades to grasp the fastener to the driving shank with such as an inclined engagement. A control ferrule may be used to move the barrel relative to the driving shank.