Hilti Aktiengesellschaft

Hilti Aktiengellschaft

Oliver Ohlendorf

Rolf Spangenberg

Helmut Burger

Rainer Ontl

Ralf Meixner

Jochen Bleicher

Hans Rupprecht

Rudolf Reitberger

Xaver Hanslmeier

Axel Fischer

Frank Kohlschmied

Georg Holzmeier

Matthias Keith

Adrian Steingruber

Ralf Greitmann

Georg Braml

Christoph Dieing

Frank Fritsch

Damir Cehajic

Helmut Specht

Josef Nussbaumer

Diep Chau-Ngoc

Frank Despineux

Roman Podhorny

Sarah Harder

Gabriele Fugger

Jörg Martin

A filter cassette for a vacuum cleaner appliance positionable in the vacuum cleaner appliance in an airflow drawn in by the vacuum cleaner appliance, wherein the filter cassette contains substantially a lateral surface, an upper opening, and a lower opening, such that the drawn-in airflow, in order to filter out dirt particles, can flow into the filter cassette through the lower opening and out of the filter cassette through the upper opening. A first sealing element extends in a first plane and the a second sealing element extends in a second plane, and wherein the first and second planes are arranged at an acute angle to one another, such that the second sealing element is oriented substantially horizontally when the filter cassette is positioned in a filter cassette receptacle accessible from outside the vacuum cleaner appliance. A vacuum cleaner appliance having a filter cassette receptacle for receiving a filter cassette. The filter cassette receptacle extends substantially in a center plane that is positioned at an acute angle to a parting plane.

Filter cassette

A filter device for a vacuum cleaner. The filter device has two chambers, of which in each case at least one participates in suction operation of the vacuum cleaner, while a filter element of the other chamber can be dedusted. As a result, while one filter element is being dedusted, suction operation can be maintained through the other chamber of the vacuum cleaner. This advantage is allowed by an elastic membrane, which can change shape and/or move when the chamber to be dedusted is ventilated. The ventilation is effected by a pressure equalizing stream which can pass through a ventilation channel and a ventilation opening into the chamber to be dedusted. As a result of the movement and/or change in shape of the elastic membrane, a dedusting pulse is applied to the filter element, which can ensure, for example, that a solid filter cake is detached and drops into the dust collecting tank of the vacuum cleaner. A method for dedusting a filter device in a vacuum cleaner is also provided.

Filter device for a vacuum cleaner and filter dedusting method

A filter device for a vacuum cleaner having a turbine device for generating at least one first and one second main air flow through at least a portion of the vacuum cleaner having and a control unit. The filter device has a first chamber including a first filter element, a first outflow opening, a first inlet opening and a first pressure surge element dividing the first chamber into a first chamber first space and a first chamber second space and reversibly movable between a first pressure surge element first position and a first pressure surge element second position, and a second chamber including a second filter element, a second outflow opening, a second inlet opening and a second pressure surge element dividing the second chamber into a second chamber first space and a second chamber second space reversibly movable between a second pressure surge element first position and a second pressure surge element second position.

Filter cleaning

A separating device that is connectable to a vacuuming device for separating dirt particles from an air stream drawn in by the vacuuming device, containing at least one separator. The at least one separator contains an inlet opening for the air stream and a first and second outlet opening, wherein the first outlet opening serves for the exit of drawn-in dirt particles from the separator and the second outlet opening serves for the exit of the drawn-in air stream and of the drawn-in dirt particles from the separator, and wherein a first and second collection vessel for collecting the dirt particles separated from the separator is contained, and wherein the first collection vessel is positioned in a direction beneath the first outlet opening and the second collection vessel is positioned in a direction beneath the second outlet opening.

Separating device for a vacuuming device

A filter device for a vacuum cleaner, including a turbine device, for generating at least one first and one second main air flow through at least a portion of the vacuum cleaner, and a control unit. The filter device includes a first chamber including a first filter element, a first outflow opening, a first inlet opening and a first pressure surge element, which divides the first chamber into a first and a second space and is reversibly movable between a first and a second position, the first main air flow being able to flow into the first space of the first chamber through the first filter element and to flow back out through the first outflow opening, a second chamber including a second filter element, a second outflow opening, a second inlet opening and a second pressure surge element, which divides the second chamber into a first and a second space and is reversibly movable between a first and a second position, the second main air flow being able to flow into the first space of the second chamber through the second filter element and to flow back out through the second outflow opening. The first pressure surge element and the second pressure surge element alternately are reversibly movable to alternately clean the first and second filters.

A hand-held power tool transmission closure having a base body for closing a transmission housing opening of a transmission housing of a hand-held power tool, in particular a hammer drill or a combi-hammer, wherein the hand-held power tool transmission closure includes a tube protruding from the base body, which extends in the transmission housing when the base body closes the transmission housing opening. The hand-held power tool transmission closure includes an air channel which extends in a first air channel section through the base body and in a second air channel section through the tube so that an air mass can flow through the air channel into and out of the transmission housing.

Hand-held power tool transmission closure and hand-held power tool

A side handle for a hand-operated power tool includes a handle rod disposed along a handle axis and a fastening mechanism, where the side handle is releasably fastenable to the hand-operated power tool by the fastening mechanism. The fastening mechanism includes a tensioning band that engages around a fastening axis and a tensioning mechanism. The tensioning mechanism has a pull rod that is anchored to the tensioning band and is displaceable along the handle axis and a tensioning wheel that is rotatable about the handle axis and engages in an external thread of the pull rod. A damper connects the handle rod to the fastening mechanism and includes a leaf spring with a longitudinal side oriented in an inclined manner to the fastening axis where the leaf spring has a slot. A splint is fastened to the pull rod and engages in the slot.

Side handle

A hand-held power tool includes a tool holder for holding a tool on a working axis, a pneumatic striking mechanism for striking the tool, and an absorber, which includes a bending spring, situated transversely to the working axis, and a mass body. A countershaft is driven by the motor around a rotation axis which runs in parallel to the working axis. A wobble drive for driving the pneumatic striking mechanism is situated on the countershaft. In addition, a cam disk is situated on the countershaft and includes a cam which projects in a start-up direction which runs in parallel to the working axis. The bending spring includes a counterpiece provided relative to the cam. The cam, which abuts the counterpiece, pretensions the bending spring in the start-up direction.

Handheld power tool

An auxiliary device for an electrical work machine is provided. The auxiliary device can be attached to the electrical work machine, and the electrical work machine can be equipped with a tool in a tool holder. The auxiliary device comprises a housing comprising a handle and an attaching device. The housing can be attached to the electrical work machine with the attaching device. The housing comprises a handling section, which is disposed next to the attaching device, and which comprises an opening, which allows at least the tool holder to be freely accessible from the sides. The handle is permanently connected to the handling section.

Auxiliary device and a system composed of an electrical work machine comprising an auxiliary device

A dust extraction device for a machine hand tool is provided. The dust extraction device includes an outer tube arranged about an axis, the outer tube being closed on the first axial end thereof by a wall. An opening is provided for a pump connection, the opening being arranged in a position neighboring the wall in a shell wall of the outer tube. An attachment feature is provided having a sheath-like shape and arranged on the side of the wall which lies opposite the outer tube in an axial extension of the outer tube. An inner tube is arranged inside the outer tube about the axis, and penetrates the wall. A length of the inner tube inside the outer tube is at least half of the length of the outer tube.

Dust extraction device

A coarse separator () for a power tool () is used for separating, at least partially, from an air flow (L), material particles (M) produced during operation of the power tool () and aspirated by a suction device (), and includes an inlet opening () connectable with the suction head () of a suction device () that aspirates the particles, an outlet opening () for letting a purified air flow (L) out, and a lamella separator arranged between the inlet opening () and the outlet opening ().

Coarse separator

A hand-held power tool includes a work spindle ()in which a chuck () for receiving an axially displaceable, within limits, percussion working tool (), is mounted on. The work spindle () having a coaxial die () located in its interior for imparting blows to the percussion working tool (). At least one cooling air channel () extends in an outer housing () radially outwardly of the work spindle and opens into a chuck free space () which adjoins the work spindle (). The at least one cooling air channel () communicates with the interior of the work spindle through an opening () formed in the work spindle. A seal () completely flowtight seals the free space () outwardly.

Hand-held power tool with a chuck for receiving a percussion working tool

A hand-held power tool () includes a drive () located in the power tool housing () for driving a working tool (), and a torsional pendulum () at least partially mounted on the housing () for compensating vibrations generated by the drive ().

Hand-held power tool with vibration compensator

An electric saw () includes a stroke arrangement () driven in a reciprocating manner and having a tool receptacle () for a saw blade (), a housing () which extends along a stroke axis (A) of the stroke arrangement () and which forms at a working tool-side end () a housing opening () from which the stroke arrangement () projects, and which forms a receiving space () in which is arranged a motion transforming device (), the stroke arrangement () being supported at the housing () by a bearing element () which forms a sliding bearing () and is arranged between the motion transforming device () and the housing opening (), with an air flow (L) being directed toward the housing opening () so that particles (P) can be prevented from entering the sliding bearing (), with the bearing element () limiting the receiving space () toward the housing opening (), and with a flow path () by which the air flow (L) is guided being provided at an outer side () of the bearing element () facing the housing opening ().

Electric jigsaw

A suction device for a pick power tool includes a securing device provided at the first axial end of the suction device for securing the suction device () on the pick power tool (), a connection element () for a vacuum source inclined to the longitudinal axis () of the suction device (), and a first baffle wall () and at least one further baffle wall () spaced from the first baffle wall (), with the first baffle wall being located between the connection element () and the first end () of the suction device () and the at least one further baffle wall () being located between the first baffle wall and the first end (), and the first baffle wall () and the second baffle wall () each having, respectively, a through-opening () for the working tool () of the pick power tool ().

Growing community of inventors

Landsberg, Germany

Oliver Ohlendorf