Abstract

A dust suction device for detachable attachment to a hand-held drilling machine includes a housing, a telescoping suction pipe coupled to the housing, an electric motor positioned in the housing, a suction fan driven by the electric motor and operable to generate a vacuum in the suction pipe, a dust collection container coupled to the housing and positioned upstream of the suction fan, and a support frame. The support frame includes a first portion coupled to the housing, a second portion coupled to a neck of the drilling machine, and an auxiliary handle extending from one of the first and second portions of the support frame. The support frame supports the drilling machine in a side-by-side relationship with the dust suction device.

IPC Classes  ?

• B23B 47/34 - Arrangements for removing chips out of the holes made; Chip-breaking arrangements attached to the tool

Abstract

A manually operated hammer drill (1) includes a spindle (3) that drives a chuck (5) in a rotary manner about an axis of rotation (6) in a drilling mode, and includes a pneumatic hammer mechanism (4), that hammers against a tool inserted in the chuck (5) in a hammer mode. The hammer mechanism (4) has a piston (10) which performs reciprocating movements (12) parallel to the axis of rotation (6) in a cylinder (11) conformed inside the spindle (3) when hammer mode is activated. The piston (10) has at least one radial groove (21) in which an annular seal (22) is arranged.

IPC Classes  ?

• E02D 7/06 - Power-driven drivers

Abstract

A hand-operated power tool, particularly a hammer drill (1), includes a drive motor (2), a tool spindle (3) to drive a tool in rotary manner, a rotary drive transmission (4) to couple the drive motor (2) to the tool spindle (3), a hammer mechanism (5) to drive the tool in percussive manner, a hammer mechanism transmission (6) to couple the drive motor (2) to the hammer mechanism (5), and a switching device (7) to activate and deactivate the hammer mechanism (5). The switching device (7) has a clutch (9) that is integrated in a force path (10) of the hammer mechanism transmission (6) and has an actuation stroke (11) for advancing and withdrawing the clutch (6), which stroke extends perpendicularly to the axis of rotation (8) of the tool spindle (3), or parallel to an axis of rotation (37) of an actuating element (28) that is rotated manually to actuate the switching device (7) for advancing and withdrawing the clutch (6).

IPC Classes  ?

• E02D 7/06 - Power-driven drivers

Abstract

An electrical tool, in particular drill and chiselling hammer, including a drive shaft and two driven members. The drive shaft is operatively connectable with the driven members by a respective one of a pair of coupling sleeves. The coupling sleeves are actuatable by a rotatable and mechanical actuating element, in particular a mechanical rotary switch. The actuating element of the electrical tool includes transmission features or a transmission portion that is stationary with respect to the actuating element and which is contactable directly with the respective coupling sleeve for actuating the coupling sleeves.

IPC Classes  ?

• E02D 7/02 - Placing by driving
• B25C 5/02 - Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
• B25C 5/06 - Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor without provision for bending the ends of the staples on to the work

Abstract

A power tool, such as a hammer drill and/or a chiseling hammer, includes a lubricated transmission arranged in a sealed transmission box. The transmission box is in fluid connection with the atmosphere via a venting channel. A sealing element is arranged in the venting channel. The sealing element cooperates with the venting channel to create a meandering pathway for air to pass through the venting channel so that leakage of lubricant between the sealing element and the venting channel is at least substantially prevented.

IPC Classes  ?

• B25F 5/02 - Construction of casings, bodies or handles

Abstract

A damper for mounting between a power tool, having an axis of vibration, and a handle. The damper includes a damping arrangement for damping impacts and a spacer. The spacer is dimensioned so that, when the damper is mounted to the power tool, a ratio of a first distance between the axis of vibration and the handle to a second distance between the axis of vibration and the damping arrangement is at least 2:1. Further, a handle having such a damper for a power tool, as well as the corresponding power tool having such a handle, are described.

IPC Classes  ?

• B25D 17/24 - Damping the reaction force

Abstract

A spindle lock of a hand-held combination drill and chisel hammer has a gearbox housing and a countershaft rotatably supported in the gearbox housing about an axis of rotation. A locking plate is provided for selectively releasing and locking a rotational movement of the countershaft. Guide elements are disposed in the gearbox housing, wherein the locking plate is displaceably guided on the guide elements in the gearbox housing in a direction parallel to the axis of rotation of the countershaft. The guide elements have a guide rail arrangement wherein a part of the guide rail arrangement is provided on the gearbox housing and is integral with the gearbox housing.

IPC Classes  ?

• E02D 7/02 - Placing by driving

Abstract

A portable hand-guided power tool has a housing and a handle having a first leg and a second leg, wherein the handle is secured by the first and second legs to the housing such that the handle is pivotably connected by the first leg to the housing and the second leg is connected to the housing such that a pivoting movement between the handle and the housing is possible. A pressure spring is disposed between the second leg and the housing. A first pressure member is disposed at the handle and a second pressure member is disposed at the housing. The pressure spring is held with pretension between the first and second pressure members. The first pressure member has at least one hook element and, without the handle being mounted on the housing, the first pressure member is positive-lockingly hooked to the housing by engaging a receptacle of the housing so as to form a hook connection.

IPC Classes  ?

• B25D 17/04 - Handles; Handle mountings
• B23B 45/16 - Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor with superimposed percussive action

Abstract

A hammer drill has an electric drive motor having a motor shaft and a tool shaft driven in rotation by the electric drive motor. A hammer action is provided. The tool shaft is driven by a first single-stage gear unit directly by the motor shaft of the electric drive motor. The hammer action is driven by a second single-stage gear unit directly by the motor shaft of the electric drive motor.

IPC Classes  ?

• B25D 11/12 - Means for driving the impulse member comprising a crank mechanism

Abstract

The invention relates to a portable power tool having a motor housing (1) and a separate handle housing (3) fastened to the motor housing (1) by means of an elastic vibration damper (2) and secured thereon in a positive-locking manner. The vibration damper (2) is composed of a fastening sleeve (4) assigned to the motor housing (1), an elastic damping sleeve (5) coaxially enclosing the fastening sleeve (4) and a handle holder (6) likewise coaxially enclosing the fastening sleeve (4) and the damping sleeve (5) and assigned to the handle housing (3). The essentially rigid construction unit consisting of the handle holder (6) and the handle housing (3) is secured in a positive-locking manner, with play, directly to the essentially rigid construction unit consisting of the fastening sleeve (4) and the motor housing (1).

IPC Classes  ?

• B25F 5/00 - COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for