Robert Boschgmbh

Stephan Jonas

Joachim Hecht

Wolfgang Fehlmann

Hubert Greif

Walter Fuchs

Wolfgang Geiger

Werner Fischer

Siegfried Keusch

Justus Lamprecht

Traugott Degler

Viktor Kahr

Joerg Lemmel

Kiyotaka Ogata

Birte Luebbert

Nestor Rodriquez-Amaya

Ruben-Sebastian Henning

Klaus Wurst

Stuart-William Nicol

A hand-guided saber saw, has a drive unit by way of which a tool, in particular a saw blade, can be driven, and with a tool guide mechanism, by way of which the tool can be guided laterally by guide elements, and the tool guide mechanism has a control motor, by way of which a spacing between the guide elements can be adjusted to a tool thickness, and the tool guide mechanism has pivot arms, connected via a joint, on which arms the guide elements are disposed.

Saw with a tool guidance mechanism with guide elements adjustable to the tool size

The dust removal device comprises a fan (), a dust collection receptacle (), and a suction passage (). The dust collection receptacle () equipped with a dust filter () is located in the path of air flow () between the suction passage () and the fan (). The dust is therefore filtered out of the air stream before it reaches the fan, which prevents dust-induced wear. It is also possible to use the same fan for engine cooling as well as dust removal.

Hand tool comprising a dust suction device

In a hand power tool for surface machining, with a vibrating plate, which is suspended on a housing by vibrating elements, and with an electromotively driven eccentric drive, which is contained in the housing and sets the vibrating plate into an orbital oscillating motion, in order to produce a housing that is rather flat and short, which can be manually controlled in the same way as a grasping block, the coupling point is situated between the eccentric drive and the vibrating plate, close to the front edge of the vibrating plate, while the elastic vibrating elements engage the vibrating plate close to the opposite edge of the vibrating plate. The vibrating plate is affixed to the housing in the region between the coupling point and the engagement points of the vibrating elements by means of a movement transmission mechanism, which is flexurally flexible at one end and which converts the orbital motion of the vibrating plate, which is generated at the coupling point, into a reverse orbital motion at the engagement points (FIG.).

Manual machine tool

A hand held power tool has a housing, a drive, a mechanical striking mechanism with a striker, a drive element for driving the striker in its striking movement and having at least one curved track with raised and depressed portions, and a sensing element in operative connection with the striker supported on the drive and having a sensing member bringable in operative position with the raised and depressed portions of the curved track.

Hand power tool

In a fuel injection pump with a housing, a metering pump and an injection adjuster for the metering pump, in which the injection adjuster has a piston that is acted upon by a restoring spring, the starting performance of the internal combustion engine supplied by the injection pump is to be improved by providing a starting spring which acts on the piston and acts counter to the restoring spring.

Fuel injection pump

A fuel injection pump has an injection adjuster whose injection adjuster piston is acted upon on one face end by a restoring spring and by a pressure controlled by a control slide. On another face end the injection adjuster piston is exposed constantly to a pressure fluid source, which furnishes an rpm-dependent pressure. The control slide is adjusted positively by a control piston actuated by a control pressure, and in the process the control piston varies the pressure, acting the one face end, in a closed first pressure chamber. The injection adjuster piston is thus free of relatively high adjusting pressures acting on the injection adjuster piston transversely to a direction of motion.

A fuel injection pump having a cam drive and an injection adjuster piston, acting on the cam drive and serving the purpose of an injection onset adjustment. The injection adjuster piston on a face end encloses at least one pressure chamber that via a control valve is either made to communicate with a pressure source or a relief line or can be closed entirely. The control valve is actuated by an a proportional electromagnet. As a result, only a little adjusting medium is required, to obtain a high efficiency of the injection onset adjustment, and advantageously the injection adjuster piston is stressed only axially, and frictional forces on the circumference of the injection adjuster piston are thus avoided.

A pressure control valve for installation in a supply line between a pump work chamber of a fuel injection pump and an injection point in the engine to be supplied. A valve body that has a first valve seat and an axial through conduit in which a pressure control valve closing member is guided. The pressure control valve closing member opens toward the injection point counter to the force of a first valve spring and has a sealing face that cooperates with the first valve seat, as well as with an axial through bore in the pressure control valve closing member. The bore can be closed by a back-flow valve that opens in the direction of the pump work chamber and has a second valve spring. For an optimal, unthrottled fuel flow through the pressure control valve, fuel conduits are respectively formed between the radially outer circumference faces of the first and second valve springs and the housing walls that encompass them, through which conduit the fuel flows in an unthrottled fashion.

Pressure valve

A method and device for switching an inductor are described. A first terminal of the inductor may be connected to ground via a first switching device. A second terminal of the inductor is always connected to a voltage power supply. A second inductor may be connected to ground via a second switching device. The energy released in the second inductor when the current flow is interrupted is used to switch the first inductor.

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Evanston, IL, United States of America

Stephan Jonas