Class 279/19.5 - Key retainer

Subclass of Class 279 - Chucks or sockets
Definition: Devices in which a single element is mounted for movement
No. of patents: 40
Last issue date: 08/19/2008

Number	Title	Issue Date
7413028	Ramming device to be assigned to a rock breaker The ramming device comprises a ramming element to be assigned to the end of a rock breaker. The inventive device receives the shocks generated by the rock breaker and transmits them to fragments to be compacted. The ramming device also has a frame comprising: positi...	08/19/2008
7364168	Device for assembling the casing and the body of a hydraulic rock-breaker The inventive device includes a casing, inside of which the body is accommodated that has the hydraulic striking mechanism, inside of which a bush is mounted for guiding a tool. Said tool is held in a manner that enables it to rotate in the guiding bush and its hori...	04/29/2008
7360606	Hand machine tool with a removeable tool holder A hand power tool has a striking element via which a tool (10) in a tool holder (12) can be driven in striking fashion, which the tool holder can be detachably secured—via its body (14)—to a drive part (16) via at least one locking el...	04/22/2008
7338051	Tool holder for a rotary hammer A tool holder (1) for a rotary hammer which has a tube like tool holder main body (10) having a side wall formed with through holes (11) for receiving corresponding locking bodies (12) and formed with additional through holes (40)....	03/04/2008
7258349	Hand power tool A hand power tool selected from the group consisting of a drill hammer and an impact hammer has an exchangeable tool holder, a guide pipe which receives the tool holder at its free end, a locking device arranged on the guide pipe and operative manually for fixing th...	08/21/2007
7160065	Chuck with quick change A chuck includes a generally cylindrical body and a plurality of jaws reciprocally disposed in the body in communication with a central bore in the body. A first detent extends radially into the central bore and is releasable in a radially outward direction. Upon in...	01/09/2007
7137457	Hand-held machine tool A hand power tool, in particular a drill hammer or jackhammer, is disclosed, which has a guide tube (11), a tool holder (24) that can be attached interchangeably to the guide tube (11), and a locking device (23) that locks the tool holder...	11/21/2006
7096972	Hammer drill attachment Power tools of the type under consideration include hammer drills, for example, which are electric or battery powered and includes two modes of operation: a rotation mode and a rotation-hammer mode. A manually operable selector lever enables the hammer drill to be s...	08/29/2006
7070008	Drill or chisel hammer The invention is based on a power tool having a beater mechanism (14) and a coupling device (12, 100), which can be engaged and disengaged in order to make and break a drive connection (16, 102) of the beater mechanism (14). It is ...	07/04/2006
7040630	Chuck with quick change A chuck includes a generally cylindrical body and a plurality of jaws reciprocally disposed in the body in communication with a central bore in the body. A first detent extends radially into the central bore and is releasable in a radially outward direction. Upon in...	05/09/2006
7028786	Hand machine tool A hand power tool has a housing (10), a hammer barrel (12), a tool receptacle (14) that is separated from the hammer barrel (12) at least one locking body (16) for fixing the tool receptacle (14) in a direction of rotation (...	04/18/2006
6935436	Double-headed tent stake driver and puller having twin release levers A double-headed tent stake driver and puller having twin release levers for inserting and removing tent stakes, nails and the like is described. The tent stake driver and puller includes a slide hammer and a coupler mounted on the distal end of the slide hammer shaf...	08/30/2005
6691799	Tool holder A tool holder for a power tool, such as a drill hammer, a chisel hammer, and both, includes a striking mechanism for strikingly driving a tool, a base body, a drive part on which the base body is releasably mounted, at least one locking body for releasabl...	02/17/2004
6527280	Hand held power tool A hand held power tool formed as a hammer drill has a strikingly drivable tool holder having a base body, at least one locking body with which the base body is form-lockingly connectable and through which the base body is fixable in a rotary direction in ...	03/04/2003
6241026	Rotary hammer A tool holder attachable to a spindle of a hammer and which can receive a bit, the bit having a shank with at least one retaining groove extending along part of the shank, the retaining groove having a defined length, a front end and a rear end that limit...	06/05/2001
6213230	Drilling tool especially for the rotary percussion drilling of preferably rock A drilling tool, especially for the rotary percussion drilling of preferably rock, has a drilling body equipped toward the drilling side preferably with cutting bits, and with an axially arranged bore for receiving an exchangeable centering drill. In orde...	04/10/2001
6089798	Device for coupling a tool to a hand-held tool-driving device A device on hand-held tool-driving machines for the coupling of pounding and/or drilling tools is proposed, wherein on the tool shank (11) and the tool holder (10) are located at least three couplings comprising grooves (17, 18, 22) that run axially to th...	07/18/2000
6073705	Power-driven striking tool having a mechanism for setting the circumferential angle of tool bits attached to the striking tool There is provided a power-driven striking tool including: a casing; a tool holder rotatably supported inside the casing and having a front end to which a tool bit is attached; and an operating member fitted around the tool holder and exposed to the outsid...	06/13/2000
5971403	Holding device for percussion tool A tool bit holding device for use in percussion apparatuses such as electrically operated hammers is provided. The device includes a tool bit carrier, a front hand-operated grip, and a rear hand-operated grip. The front hand-operated grip is supported by ...	10/26/1999
5878823	Hydraulic breaking hammer A hydraulic breaking hammer having a machine housing including a cylinder bore and an impact piston which is reciprocatingly movable in the cylinder bore in response to an alternating hydraulic pressure, and a tool part having: (i) a head portion fitted t...	03/09/1999
5788430	Drilling tool for rotary percussion drilling A drilling tool for rotary percussion drilling including: a drilling body defining: a longitudinal centerline axis extending in a drilling direction; a bore extending in a direction of the centerline axis and having a bore bottom; and a recess extending i...	08/04/1998
5702112	Tool locking apparatus for machine hammers In the front head (11) of a machine hammer (10), transversely disposed wedges (18) are adapted to lock the working tool (12) so that the working tool (12) is axially movable by form-restricted cooperation with recesses (16) on the working tool (12). Each ...	12/30/1997
5603516	Drilling and/or chipping tool A drilling and/or chipping tool has a locking sleeve (9) axially displaceable through a first axial length (A1) and a second axial length (A2). When the locking sleeve (9) is axially displaced through the first length (A1) a rotationally fixed connection ...	02/18/1997
5558478	Device for transferring a torque to a tool in a hand tool apparatus The device for transferring torque to a tool member in a hand tool apparatus includes a plurality of catch grooves (23) and at least one elongated locking groove (25) spaced circumferentially from the catch grooves (23) provided in the tool shaft (11) of ...	09/24/1996
5397203	Tool and tool holder for hand-tool apparatus The tool for a tool holder of hand tools used for chiseling and/or percussion drilling has a chucking shank (9). This chucking shank (9) is provided with two rotary driving grooves (10) which are located diametrically opposite one another and open axially...	03/14/1995
5388842	Device for holding the tool of a hydraulic rock breaker This device is of the type in which the tool is mounted so as to slide, with interposition of upper and lower guide means, in a front guide. According to the invention, at least one of the guide means delimits a guide zone, the directrix of which comprise...	02/14/1995
5348430	Universal chuck for a machine for piercing a tap hole of a shaft furnace A universal chuck is presented which has the ability to either transmit a tensile or pulling force to the end of a piercing rod or transmit a rotational moment or force to a drill bit on a piercing machine for piercing a tap hole of a shaft furnace. The u...	09/20/1994
5174698	Tool bit and tool bit holder for hand held tools In a combination tool bit and tool bit holder or chuck, rotary entrainment members (6, 7) extending over different circular arcs are formed in the tool bit holder for transmitting torque to the tool bit shank (8). Corresponding rotary entrainment grooves ...	12/29/1992
4858701	Fluid-powered impact device and tool therefor A percussion tool usable as part of a single tool impact device or a multi-tool impact device. In each case, the tool is rotatably driven by a high-torque rotary actuator with the tool being longitudinally splined and received within a correspondingly lon...	08/22/1989
4775159	Chuck for a drilling tool A chuck for receiving and holding the shank of a drilling tool includes a chuck member with a central bore. An anvil for transmitting axially directed percussive force extends into a rear end of the central bore. Clamping jaws are movable in guide channel...	10/04/1988
4655651	Drill bit for hand-held drilling machines A drill bit with an axially elongated shank is suitable for use in all known conventional hand-held drilling machines. The shank is generally cylindrically shaped with axially extending first grooves open at the free rear end face of the shank. Axially ex...	04/07/1987
4621818	Hammer drill spindle and chuck assembly The drill chuck comprises a chuck body connected to a drive shaft of a drilling drive device so as to deliver hammer blows to the working tool (e.g. the drill) of a hammer drill and the like, a plurality of clamp jaws which axially guide and hold the dril...	11/11/1986
4565472	Drill for hand-held drilling devices A drill is secured in percussion drilling machines and in tool holders of hammer drills by locking elements. The locking elements fit into axially extending grooves formed in the axially extending circumferential surface of the shank of the drill. Webs lo...	01/21/1986
4512692	Tool shaft for a tool of the percussive and rotative type A tool shaft, especially for drills of the percussive type, such as hammer drills, is adapted to be mounted in a tool holder having fixed driving elements, and the shaft is therefore provided with guiding recesses driving recesses and interconnecting tran...	04/23/1985
4284284	Retainer arrangement for tools There is disclosed a tool retaining mechanism employing a nose piece including an axially extending, longitudinal bore which accepts the tool bit. The nose piece includes a first opening which is disposed so as to cut through a portion of the bore. Slidea...	08/18/1981
4202557	Drilling device A drilling device with an arrangement for the detachable connection of a drill, especially a rock drill, percussion drill, hammer drill, and the like, to a receiving device, e.g. a drive head, which has a longitudinal bore for receiving the shank of the d...	05/13/1980
4174848	Latching mechanism for reciprocating impact tools An improved latching mechanism for retaining bits, such as chisels, chippers or scalers in reciprocating impact tools. The improved latching mechanism includes a latch member that is located in the hollow nose of the tool and is rotatable between latched ...	11/20/1979
4146240	Combination of a tool holder and a tool shaft The disclosure relates to a combination of a tool holder having a socket member with a cylindrical axial bore, and a tool shaft releasably received therein. A driving element is displaceably mounted in the socket member so as to be movable between an exte...	03/27/1979
4123074	Tool shank and chuck combination for a hammer drill A hammer drill has a chuck forming a tool receptacle defining a chuck axis and provided with a tool-holding element radially displaceable into a position protruding into the tool receptacle. The tool has a shank defining a tool axis receivable axially in ...	10/31/1978
4047722	Hammer drilling devices In a drilling device, especially a hammer drill, a tool is coupled to a tool receiving means by co-operating male and female coupling elements which ensure uniform rotational motion of the tool in relation to the tool receiving means; additional transitio...	09/13/1977

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Class 279/19.5 - Key retainer