Abstract: The invention proposes a key tappet for a key module of a key for a keyboard. The key tappet comprises a coupling section for coupling a key button and a guiding section for guiding the key tappet in a receiving section of the key module upon actuation of the key tappet. The guiding section has at least one sliding section to slide in the receiving section of the key module during the actuation of the key tappet. Demolding fins caused by demolding of the key tappet are arranged outside the at least one sliding section.

Abstract: The present invention relates to a composition comprising (i) at least 10 wt % of an inorganic and/or organic, water soluble salt, based on the total weight of the composition; (ii) water; and (iii) an ether monocarboxylic acid. Further aspects of the invention relate to the use of an ether monocarboxylic acid of the invention, an amide, a salt or an ester thereof as a lubricant preferably in salt based drilling systems.

Abstract: The present invention relates to environmental friendly well treatment fluids comprising water and/or an organic phase and an ester obtainable by reacting a polycarboxylic acid with a hydroxy monocarboxylic acid. The invention also relates to the use of said ester as viscosifier and/or corrosion inhibitor for a well treatment fluid and preferably for a well treatment fluid for offshore well drilling.

Abstract: A key stem for a key module of a key for a keyboard is proposed. The key stem has a coupling section for coupling a key button thereto, and a guidance section for guiding a key stem into a receiving section of the key module when the key stem is actuated between a standby position and an actuation position. The key stem is includes at least one elastically deformable end stop element, which is disposed on the guidance section and is designed to bear against at least one end stop section of the key module when the key stem is actuated into the actuation position. The key stem also includes at least one elastically deformable return stop element, which is disposed on the guidance section and is designed to bear against at least one return stop section of the key module when the key stem has been actuated back into the standby position.

Abstract: The present invention relates to new ether carboxylic acids as high temperature stable rheology modifier, viscosifier, lubricant or emulsifier additives in oilfield and industrial applications. In particular, the invention relates to an ether carboxylic acid or a derivative thereof obtainable by reacting a branched polyol alkoxylate with a halogen carboxylic acid or a halogen carboxylic acid derivative. Further aspects of the invention relate to a lubricant composition comprising an ether carboxylic acid of the invention and the use of said ether carboxylic acid.

Abstract: A mounting device for fastening a printed circuit board onto a carrier is disclosed. The mounting device comprises at least one bolt that can be screwed onto the printed circuit board, having at least one fastening wing, wherein the fastening wing has at least one interlocking component. Furthermore, the mounting device comprises at least one bolt receiver that is or can be integrated in the carrier. The bolt is or can be disposed in the bolt receiver such that it can be displaced in the direction of a displacement axis that is oriented substantially perpendicular to a main extension plane of the printed circuit board. The bolt receiver comprises at least one groove for receiving at least one subsection of the fastening wing having the interlocking component. The interlocking component is designed to interlock in the groove when the bolt disposed in the bolt receiver is subjected to a predetermined torque.

Abstract: The current embodiments provide an assembly for cooling a printed circuit board with at least one electronic component disposed on a first surface of the printed circuit board. The assembly may have a housing with first and second elastic elements and a cooling element configured to cool the at least one electronic component. The printed circuit board may be held between the first and second elastic elements in the housing. The assembly may further have at least one cooling surface region protruding from the cooling element and facing toward a second surface facing opposite the first surface of the printed circuit board in a region opposite of the electronic component.

Abstract: The present invention relates to a drilling composition comprising: I) an organic phase comprising components i, from about 20 wt. % to about 99,999 wt. %, based on the total weight of components i. and ii., of at least one linear or branched, cyclic or non-cyclic, saturated hydrocarbon, ii. from about 0.001 wt % to about 25 wt. %, based on the total weight of components i. and ii., of at least one ester, II) from 0 to about 50 wt. %, based on the total weight of the composition, of water or aqueous phase, III) from 0 to about 60 wt. %, based on the total weight of the composition, of at least one additive, wherein the sum of the weight components I) to III) is 100 wt %, to a process for preparation of a drilling composition, to uses of a drilling composition, to a drilling system, to a process for making a borehole, to a process for conveying cuttings, to a process for treating a drill head, to a process for production of at least one of oil and gas.

Abstract: The present invention relates to an emulsion comprising at least (a) an organic phase, (b) a water phase and (c) an ester based on an ether carboxylic acid and an alcohol. Also within the ambit of the invention is the use of an ester as defined in (c) as emulsifier, as a thickening agent and/or as an anti-foaming agent in particular in drilling emulsions and metal working fluids.

Abstract: The present invention relates to new ether carboxylic acids as high temperature stable rheology modifier, viscosifier, lubricant or emulsifier additives in oilfield and industrial applications. In particular, the invention relates to an ether carboxylic acid or a derivative thereof obtainable by reacting a branched polyol alkoxylate with a halogen carboxylic acid or a halogen carboxylic acid derivative. Further aspects of the invention relate to a lubricant composition comprising an ether carboxylic acid of the invention and the use of said ether carboxylic acid.

Abstract: The present invention relates to a drilling composition comprising I) an organic phase comprising components i. from about 20 wt. % to about 99.999 wt. %, based on the total weight of components i. and ii., of at least one linear or branched, cyclic or non-cyclic, saturated hydrocarbon, ii. from about 0.001 wt. % to about 25 wt. %, based on the total weight of components i. and ii., of at least one ester, II) from 0 to about 50 wt. %, based on the total weight of the composition, of water or aqueous phase, III) from 0 to about 60 wt. %, based on the total weight of the composition, of at least one additive, wherein the sum of the weight components I) to III) is 100 wt. %, to a process for preparation of a drilling composition, to uses of a drilling composition, to a drilling system, to a process for making a borehole, to a process for conveying cuttings, to a process for treating a drill head, to a process for production of at least one of oil and gas.

Abstract: The present invention relates to a composition comprising (i) at least 10 wt % of an inorganic and/or organic, water soluble salt, based on the total weight of the composition; (ii) water; and (iii) an ether monocarboxylic acid. Further aspects of the invention relate to the use of an ether monocarboxylic acid of the invention, an amide, a salt or an ester thereof as a lubricant preferably in salt based drilling systems.

Abstract: The present invention relates to a drilling composition comprising an organic phase having at least one linear or branched, cyclic or non-cyclic, saturated hydrocarbon, at least one ester, water or aqueous phase, and at least one additive. The present invention additionally relates to the use and preparation of the drilling composition, to a drilling system, to a process for making a borehole, to a process for conveying cuttings, to a process for treating a drill head, and to a process for production of oil and/or gas.

Abstract: The present invention relates to a drilling composition comprising an organic phase having at least one linear or branched, cyclic or non-cyclic, saturated hydrocarbon, at least one ester, water or aqueous phase, and at least one additive. The present invention additionally relates to the use and preparation of the drilling composition, to a drilling system, to a process for making a borehole, to a process for conveying cuttings, to a process for treating a drill head, and to a process for production of oil and/or gas.

Abstract: The invention proposes a key module for a key of a keyboard. The key module includes a module base, a module cover that can be coupled with the module base and a key tappet for coupling a keycap that is translucent in at least one symbol section. The module base includes at least one through-hole between a bottom section of the key module and the module cover. The module cover includes a section that is translucent for the light from a light source. The light source is a color-changeable light source for backlighting the symbol section of the keycap. The translucent section of the module cover is aligned with the at least one through-hole when the module cover is coupled to the module base.

Abstract: Electricity bolt for electrical contact of a printed circuit board with an electric conductor, with a basic body, wherein the basic body can be electrically contacted by a first section with the printed circuit board, and by a second section with the electric conductor, wherein the basic body at least in the area of the first section, by which the basic body is electrically conductively contactable with the printed circuit board, is designed as a hollow component, into which for the electrical contact with the printed circuit board a screw is so screwed that the first section is radially outwardly expandable by the screw.

Abstract: The invention relates to a mounting device for fastening a printed circuit board onto a carrier. The mounting device comprises at least one bolt that can be screwed onto the printed circuit board, having at least one fastening wing, wherein the fastening wing has at least one interlocking component. Furthermore, the mounting device comprises at least one bolt receiver that is or can be integrated in the carrier. The bolt is or can be disposed in the bolt receiver such that it can be displaced in the direction of a displacement axis that is oriented substantially perpendicular to a main extension plane of the printed circuit board. The bolt receiver comprises at least one groove for receiving at least one subsection of the fastening wing having the interlocking component. The interlocking component is designed to interlock in the groove when the bolt disposed in the bolt receiver is subjected to a predetermined torque.

Abstract: Electricity bolt for electrical contact of a printed circuit board with an electric conductor, with a basic body, wherein the basic body can be electrically contacted by a first section with the printed circuit board, and by a second section with the electric conductor, wherein the basic body at least in the area of the first section, by which the basic body is electrically conductively contactable with the printed circuit board, is designed as a hollow component, into which for the electrical contact with the printed circuit board a screw is so screwed that the first section is radially outwardly expandable by the screw.

Abstract: The present invention relates to environmental friendly well treatment fluids comprising water and/or an organic phase and an ester obtainable by reacting a polycarboxylic acid with a hydroxy monocarboxylic acid. The invention also relates to the use of said ester as viscosifier and/or corrosion inhibitor for a well treatment fluid and preferably for a well treatment fluid for offshore well drilling.

Abstract: The invention proposes a key tappet for a key module of a key for a keyboard. The key tappet comprises a coupling section for coupling a key button and a guiding section for guiding the key tappet in a receiving section of the key module upon actuation of the key tappet. The guiding section has at least one sliding section to slide in the receiving section of the key module during the actuation of the key tappet. Demolding fins caused by demolding of the key tappet are arranged outside the at least one sliding section.