| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 279000000 | Self-grasping | 18 |
| 279000000 | Yielding grasping jaws | 5 |
| 279022000 | Ball or roller | 5 |
| 20090045593 | Connection between two tool parts - The invention relates to a connecting point ( | 02-19-2009 |
| 20090212507 | DEVICE AND METHOD FOR HOLDING A TOOL BIT - A device for holding a bit for a tool, the bit to be disassembled and/or re-assembled when held, includes a housing to be secured to a stationary base and a clamping mechanism for releasably clamping the bit to the housing so that it may be disassembled and/or re-assembled, the clamping mechanism including a recess provided in the housing, a movable gripping element arranged inside the recess and having a first gripping area for engaging the bit part, and a stationary gripping element, the gripping element having a second gripping area for engaging a bit part, wherein the movable gripping element is configured to be moved between an open position wherein the stationary gripping element and the movable gripping element are spaced to allow to receive or to remove the bit part and a clamping position wherein the bit part is clamped between first and second gripping areas of the gripping elements. | 08-27-2009 |
| 20100207335 | Tool with a Chuck - A tool includes a handle and a chuck. The chuck includes a socket, a sleeve located on the socket. The socket includes a recess, an aperture in communication with the recess, chutes in communication with the recess, and a groove in an external side. The sleeve includes front, middle and rear shoulders on an internal side. A C-clip is located within the groove. A first stopping ring is abutted against the front shoulder. The C-clip is located between second and third stopping rings. A small ball is located in the aperture of the socket and restrained with the front shoulder. Large balls are movably located in the chutes. A pushing ring is located against the large balls. A first elastic element is compressed between the second stopping ring and the pushing ring. A second elastic element is compressed between the third stopping ring and the rear shoulder. | 08-19-2010 |
| 20110140376 | Dual Size Tool-Bit Holder - A tool-bit holder ( | 06-16-2011 |
| 20140312577 | Quick-Change System For A Tool Holder - A quick-change system for a tool holder comprises a machine-side receiving fixture having a hollow-cylindrical extension on which a switching sleeve is displaceably held. Automatic angular alignment of the tool holder upon introduction into the hollow-cylindrical extension of the receiving fixture is enabled by an alignment of the points of the star-shaped end face on the cylindrical holding portion of the tool holder, upon impact against a first set of three balls angularly spaced 120° apart. Once the tool holder has aligned itself in this way, then the first balls make their way into the longitudinal grooves of the cylindrical holding portion, whereby a rotationally fixed coupling is achieved. Upon the further insertion into the hollow-cylindrical extension, an axial securement finally occurs when a second set of three balls are displaced radially inward into associated depressions on the cylindrical holding portion. | 10-23-2014 |
| 279024000 | Yielding detent | 1 |
| 20140070498 | END ALIGNED FLEXIBLE CONNECTION SLEEVES - A latch and catch arrangement is disclosed, whereby a sleeve supporting a flexible hinge is oriented over a bearing in guide. An asymmetrical alignment via a latch and catch between the sleeve and tool collar orients a flexible hinge, which may be of reduced thickness, over a bearing in a guide. The bearing moves upward when a tool is inserted into a tool socket, and the flexible hinge, properly oriented by the alignment catch/latch, keeps the bearing in the tool socket while allowing necessary movement to insert and remove a tool. | 03-13-2014 |
| 279000000 | One-way-clutch type | 12 |
| 279028000 | Wedge | 3 |
| 20090256318 | Device for Detachably Coupling Two Parts - A device for coupling two parts includes a first part having a cylindrical adapting journal and a radial flat surface which limits the adapting journal by the base thereof and being radially protruded, and a second part having a receiving sleeve with a cylindrical internal surface. A clamping device, during clamping, enables the adapting journal to be inserted into the receiving sleeve and to be pressed thereto between the flat surface and a front surface. In order to guarantee an exact centering of the parts with the aid of simple means, the inventive receiving sleeve is provided with a lower conical part diverging from the internal cylindrical surface towards the front surface and the adapting journal is provided with an elastically deformable centering ring which is arranged at the level of the base and is provided with an external conical part complementary to the lower conical part. | 10-15-2009 |
| 20090273145 | CLAMPING DEVICE - The invention relates to a clamping device with a base body ( | 11-05-2009 |
| 20140265162 | Self-Tightening Rotary Tool Holding System - A tool holding system for a rotary power tool is configured to clamp around a working tool when the working tool is inserted in the tool holding system. The tool holding system includes a sleeve having a frustroconical inner surface portion, a collet having frustoconical outer surface portion complementary to the inner surface portion, a spring mount operably connected to a motor for rotation by the motor, and a spring. The spring includes a first end portion operably connected to the collet to bias the collet toward a first position whereat the outer surface portion engages the inner surface portion, and a second end portion rotationally fixed with respect to the spring mount. | 09-18-2014 |
| 279029000 | Side detent | 9 |
| 20140312578 | BIT RETENTION DEVICE - A bit retention device includes a shaft having a sidewall defining a hexagonal cavity extending from a first end thereof and a ball groove extending through the sidewall and communicating with the hexagonal cavity. A ball is disposed in the ball groove and a ball spring engages the ball and biases the ball toward the first end. An actuator sleeve surrounding the shaft includes an internal ramp engaging the ball. A spring biased plunger assembly is disposed in the bore for biasing a bit received in the bore in a direction toward the insertion end. | 10-23-2014 |
| 279030000 | Ball or roller | 8 |
| 20080197583 | Chuck mechanism of striking tool - Connection of a bit with two balls is enabled while high operability of attachment and detachment of the bit is maintained. A pressing ring | 08-21-2008 |
| 20090026718 | Toolless bitholder for spiral saws - A bit holder for a rotary tool is disclosed herein. In one embodiment, the bit holder comprises a drive shaft with an elongated bit channel configured to receive a tool bit for the rotary tool. A cavity is provided in a peripheral wall of the drive shaft. The cavity extends in a radial direction from the bit channel to an outer portion of the drive shaft. A moveable lock member is positioned in the cavity of the drive shaft. A collet is positioned in the bit channel apart from the cavity. The collet includes a collapsible end portion configured to clamp down on the tool bit. A collet nut rotatably engages the drive shaft and is moveable between a release position and a lock position. In the lock position the collet nut clamps the collapsible end portion of the collet while also forcing the lock member into the bit cavity. | 01-29-2009 |
| 20090079143 | ROTARY TOOL WITH MULTIPLE TOOL ATTACHMENT INTERFACES - A rotary tool has an output shaft having an axis of rotation and a distal neck portion which has at least three neck faces that do not intersect the axis of rotation, and a substantially U-shaped spring element having a base portion and two leg portions, wherein the spring element straddles the distal neck portion. | 03-26-2009 |
| 20090160138 | Tool holder for a machine tool, in particular for a hand-held power tool - A tool holder for a machine tool has a tool holder element in which an insertion tool is insertable and lockable, a locking device for locking the insertion tool in said tool holder element and including a locking element displaceable between a release position and a locking position in which the insertion tool is locked in the tool holder, a blocking element held in the tool holder element and displaceable by the insertion tool, the blocking element inhibiting a motion of the locking element in a locking position, a control element which displaces the blocking element and located on the tool holder, which in a first phase when the control element moves between the release position and the locking position in a control position in which it acts on the blocking element, and in a second phase the control element is in a non-operational position, the control element is configured so that it performs an axial motion in the control position and it performs a radial motion to move it into a non-operational position. | 06-25-2009 |
| 20100219593 | Bit Retention Device - A bit retention device includes a shaft having a sidewall defining a hexagonal cavity extending from a first end thereof and a ball groove extending through the sidewall and communicating with the hexagonal cavity. A ball is disposed in the ball groove and a ball spring engages the ball and biases the ball toward the first end. An actuator sleeve surrounding the shaft includes an internal ramp engaging the ball. The internal ramp includes a shallow ramp portion having a first angle of inclination with respect to a center axis and a steep ramp portion having a second angle of inclination with respect to said center axis of said shaft that is greater than the first angle of inclination. A spring biased plunger assembly is disposed in the bore for biasing a bit received in the bore in a direction toward the insertion end. | 09-02-2010 |
| 20110049816 | Quick connecting device structure - A quick connecting device structure comprises a shaft body defined by a proper-length external ring guiding section with two restricting surfaces for the abutment of front and rear movement rings to clamp a spring element there-between. The shaft body also includes a storing socket with an external assembly portion at one end, and an extensible bore drilled at the other end for the accommodation of a steel ball. A cylindrical sleeve has an end defined by an internal stepwise abutment ringed surface and a coupling cavity, and the other end having first and second annular insert grooves. A stop collar fitted to the coupling cavity provides another abutment ringed surface. The two abutment ringed surfaces can bi-directionally press at the front or rear movement ring with the spring element respectively, forming a two-way pressing-and-bouncing operation. Thus, a driver shank can be easily slid in/out for quick installment or replacement thereof. | 03-03-2011 |
| 20120025474 | Tool Bit Holder - A tool bit holder includes a sleeve, a hub, and a locking mechanism. The sleeve is moveably mounted on an outer periphery of the hub and includes a first notch, a second notch, and an abutting section. The abutting section is disposed between the first and second notches. The locking mechanism is disposed in a cavity defined in the outer periphery of the hub and is retained therein by the sleeve. Also, the locking mechanism includes a control member, a resilient member, and a detent. The control member is moveably disposed in the cavity and is biased by the resilient member. The detent is carried by the control member. | 02-02-2012 |
| 20140183827 | CHUCK TOOL AND BITS - A tool arrangement and chuck apparatus for quick change of a range of tools; particularly, a quick change chuck adapted to engage various diameter drill bits, tools and tool holders. The tools are rotatable in a chuck or adaptor and have at one end a centering shaft portion having a constant diameter for multiple tool end diameters and shapes, a drive shoulder portion and a lock portion. The chucks have a tool centering arrangement for accommodating the constant diameter centering shaft. The chucks are also described as having tool bit release mechanism operable to disengage the tool from a retention mechanism when a force is applied inwards of the body of the chuck by the user to allow the tool bit to be removed longitudinally from the chuck but also arrange to allow the tool bit to be inserted longitudinally into the chuck without requiring any other user operation. | 07-03-2014 |
