Siemens Aktiengesellschaft

Andreas Stihl Ag Co. Kg

Andreas Stihl

Other

Andreas Stihl Ag & Co.

Siemens Aktiengesell Schaft

Firma Andreas Stihl

Siemens Energy Global Gmbh & Co. Kg

Howaldtswerke-deutsche Werft Gmbh

Joachim Hoffmann

Klaus-Martin Uhl

Dieter Angstenberger

Gerhard Zerrer

Thomas Stark

Maximilian Eberhardt

Josef Karner

Arno Mattejat

Albert Hammerschmidt

Roland Schierling

Josef Lersch

Torsten Brandt

Christina Wedel

Jurgen Erath

Stefan Von Siegroth

Florian Eder

Sebastian Friedrich

Armin Datz

Helmar Amend

Joachim Kottke

Herbert Hartnack

Peter Bauer

Ottmar Voitlein

Thomas Schweigert

Berthold Schell

Walter Stühler

Ernst Buck

Florian Von Krane

Andreas Schneider

Hans-Jürgen Tölle

Silke Latzel

Georg Becker

Horst Eckhardt

Torsten Barz

Hans Pommer

Helmut Schlessman

Volker Kalbfleisch

Frank Bärnreuther

Jürgen Steinhauser

Rolf Ademes

Anett Eder

Frank Baernreuther

Thilo Hummel

Stefan Dörfler

Eberhard Becker

Christian Broer

Heiko Solmecke

Helmut Marquard

Alexander Barth

Frank BÄRNREUTHER

Torsten Lochner

Hans-Jürgen Beie

Thomas Scholz

Frank Barnreuther

Jens Wietoska

Ulf Kobisch

Markus Grimmig

A method for generating energy in mobile applications, such as water vehicles, wherein hydrogen is produced by at least partially dehydrogenating a hydrogenated liquid organic hydrogen carrier (LOHC) in a chemical reactor, where electricity and water are generated in at least one fuel cell and heat for the chemical reactor is generated in a heating device from the produced hydrogen, and where the hydrogen produced by the chemical reactor is first conducted through the at least one fuel cell and then supplied to the heating device, such that the at least one fuel cell can therefore be operated under partial load and thus with better efficiency than if the hydrogen for the heating device is branched off before the fuel cell.

Method for generating energy and energy generation device for mobile applications

A drive system for a water vehicle, in particular for a submarine underwater vehicle or an unmanned underwater vehicle, includes a fuel cell system, at least one operating-gas container for supplying the fuel cell system with an operating gas, and a compressor arranged on a gas discharge line for compressing a residual gas from the fuel cell system, wherein a turbine arranged between the operating-gas container and the fuel cell system is provided for expanding the operating gas before the operating gas enters the fuel cell system, where the compressor is driven by the turbine such that the energy balance of the drive system is thereby improved.

Drive system for a water vehicle, method for operating a drive system, and water vehicle having the drive system

An electrochemical cell has at least one plate element which can be cooled by a liquid coolant, such as water. The plate element has a surface that can be wetted for the purpose of cooling with the coolant. The surface of the plate element in the electrochemical cell is configured such that a contact angle between the surface and the liquid coolant is less than 90&#xb0;. In the method for producing the electrochemical cell an additional method step is carried out which influences the wettable surfaces of plate elements for cooling with coolant and by which a contact angle between the surface and the coolant is decreased.

Electrochemical cell

An operating gas system for an underwater vehicle, particularly for a submarine or an unmanned underwater vehicle, includes a fuel cell system and an operating gas vessel connected in terms of flow to the fuel cell system. In order to achieve simple and efficient storage of boil-off gasses, a gas-receiving device is also provided and is connected to the operating gas vessel. The gas-receiving device contains a sorbent for receiving boil-off gas from the operating gas vessel. The boil-off gas, which is produced in the operating vessel with an operating gas for the fuel cell system and which cannot be consumed directly in the fuel cell reaction, is therefore collected and stored with the aid of the sorbent in the gas-receiving device. A method for operating an operating gas system and an underwater vehicle are also provided.

Operating gas system for an underwater vehicle, method for operating such an operating gas system and an underwater vehicle having such an operating gas system

An electrochemical cell includes a flow chamber disposed between two plate elements and having a flow inlet and a flow outlet for a flow medium permeating the flow chamber and defining a main flow direction of the flow medium between the flow inlet and the flow outlet. One of the plate elements has protrusions for supporting the plate element on the other plate element in a regular grid structure, between which a network of flow channels passing through the flow chamber runs in at least one flow channel direction. The regular grid structure is configured in such a way that the grid of the flow channels has two or more flow channel directions each enclosing an angle differing from zero degrees relative to the main flow direction of the flow medium.

A power tool with a drive motor and a drive belt guided about a drive pulley and an output pulley has a tool driven by the drive motor through the drive belt. A tensioning device is provided that changes a spacing between the drive pulley and the output pulley and has at least one tensioning position and at least one release position. In the at least one tensioning position, the drive pulley and the output pulley have a first spacing relative to one another and in the at least one release position have a second spacing to one another that is smaller than the first spacing. The drive belt is an elast belt and the tensioning device, as a result of inherent tension of the elast belt, is secured in the at least one tensioning position.

Power tool

A protective cover of a hand-held cut-off machine has a bracket that is secured on the exterior side of the protective cover. The bracket is locked in at least one locked position with at least one locking projection in at least one receptacle of the protective cover. The bracket is releasable from the locked position by a movement of the bracket in the release direction. A simple release of the bracket can be achieved in that the protective cover has means that move the locking projection upon movement of the bracket in the release direction at least partially out of the receptacle.

Protective cover for a hand-held cut-off machine

A guide cart for a hand-held power tool with a driven tool has a pivot device that is pivotable between an open position and a fixation position. A fixation elements is provided that releasably secures the power tool on the guide cart. The fixation element is secured on the pivot device. The pivot device has at least one support for supporting a tool of the power tool in the fixation position of the pivot device. The guide cart has a holder for the power tool, wherein holder is provided with a base plate and has at least one lateral guide for the power tool. The pivot device is supported on the base plate. The pivot device and the baseplate together form a C-shaped frame.

Guide cart and power tool with guide a cart

A protective cover of a hand-held cut-off machine has a cover member having an interior. At least two injection nozzles for spraying a cooling liquid into the interior are arranged on the cover member. A supply line for supplying the cooling liquid to the at least two injection nozzles is provided. A bow is arranged outside of the cover member. The supply line has a line section that extends from a first injection nozzle to a second injection nozzle through the bow.

The invention relates to a delivery unit () comprising a swirl pot (), a fuel pump () placed therein, and a filter, which is placed on the bottom () of the swirl pot () and which is radially flowed against. This filter is formed by shaped elements axially protruding from the bottom () of the swirl pot () whereby forming an axially extending gap () between every two adjacent shaped elements (), and the filter surrounds an inlet opening () located in the bottom () of the swirl pot (). At least one flow-through area () is situated perpendicular to the gaps () and perpendicular to the flow-through direction, this at least one area () connecting at least two adjacent gaps ().

Delivery unit

A protective cover for a cutting wheel of a hand-held cut-off machine driven by an internal combustion engine has a circumferential wall and two opposed sidewalls adjoining the circumferential wall. The circumferential wall and the two sidewalls are a monolithic component made of cast light metal. The circumferential wall in a circumferential direction has at least over sections thereof a first integral thicker portion. The two sidewalls are thinner than the first integral thicker portion. Preferably, the protective cover is made of diecast magnesium.

A support device () is for supporting a portable handheld work apparatus including an overhead branch cutter (). The support device () is held to the body of the operator () via a belt arrangement (). The support device () includes a cup () which has support straps () which are fixed to the cup (). The free ends of the support straps () can be coupled to the belt arrangement ().

Support device for supporting an overhead branch cutter

The present invention relates to a cutting blade for a trimmer. The cutting blade ( ) comprises a base body ( ) having a central portion ( ) as well as end portions ( ) adjoining the central portion. Cutting edges ( ) are formed on the longitudinal edges ( ) of the end portions ( ), whereby a central fastening opening ( ) is provided in the central portion ( ) for mounting the cutting blade ( ) on a drive shaft. In order to obtain a multiply cutting blade for chopping material, it is provided that the end portions ( ) that carry the cutting edges ( ) be angled off in the same direction ( ) out of the plane ( ) of the central portion ( ).

Cutting blade for a trimmer

A cutter head assembly for a motor chain saw has a cutter head housing and a drive shaft mounted in and projecting from the cutter head housing. A drive pinion is mounted on the portion of the drive shaft projecting from the cutter head housing. A guide bar having a first end positioned adjacent to the drive pinion is provided. A saw chain is driven by the drive pinion and circulates on the guide bar. A cover covering the drive pinion and resting at least in an area of outgoing deflection of the saw chain at a housing wall of the cutter head housing defines a cuttings chamber open toward the guide bar. The first end of the guide bar is clamped between the housing wall of the cutter head housing end the cover. The cover has a cuttings ejection opening opposite the housing wall in the vicinity of the area of outgoing deflection. The cuttings ejection opening has a rim extending in a circulating direction of the saw chain and a ramp projecting from a first portion of the rim into the cutting chamber.

Cutter head with cover for drive pinion

A cutting machine having a rotatingly driven cutting tool (2) and a tool guard (1). The tool guard (1) has a first tool guard part (11) which is fixedly mounted with respect to the apparatus and a second tool guard part (12) which can be pivotably mounted relative to the first tool guard part (11). Each tool guard part includes side walls (30, 32) lying adjacent to respective sides of the cutting tool and a center web which connects the two side walls to each other. The center web (31) extends curved in the peripheral direction and is disposed above the cutting tool (2). In order to perform a disturbance-free pendular cut, the pivotable second tool guard part (12) carries a slide piece (40) which projects beyond the end edge (34) of the center web (31) and has a rounded outer slide surface (35) facing away from the center web (31). The end edge (34) faces away from the fixed first tool guard part (11).

Portable hand-guided work apparatus having a tool guard

Growing community of inventors

Plochingen, Germany

Joachim Hoffmann