Mettler-toledo Ag

Mettler Instrumente Ag

Mettler-toledo Gmbh

Paul Lüchinger

Sandra Ehrbar

Eduard Fringeli

Beat Meister

Bruno Nufer

Ernst Strickler

Beat Lüdi

Roger Leisinger

Marc Zehnder

Siegfried Zeiss

Matthias Gietenbruch

Hansjörg Rotach

Enrico Realini

Heinz Rutishauser

Andreas Stutz

Hansjoerg Rotach

Hanspeter Wachter

Stefan Buhler

Christoph Aebi

Beat Ludi

A dosage-dispensing unit with an interior space, delimited by a lateral wall and a bottom portion. The bottom portion further includes an outlet orifice. The dosage-dispensing unit can be connected to a holder device of a dosage-dispensing device. The holder device is supported by constraints that allow movement in a prescribed direction. The outlet orifice has a central longitudinal axis that is oriented at a predetermined angle relative to this prescribed direction of movement. The internal surface of the bottom portion facing towards the interior space includes a surface region having at least a line segment that starts at the outlet orifice and extends in the prescribed direction of movement.

Dosage-dispensing device

A device () dispenses dosages of a free-flowing substance from a source unit () containing the substance. The device has a base unit () and a receiving unit (), so that the source unit can be set into, and removed from, the receiving unit. An actuator () generates repeated bidirectional pivoting movements of the receiving unit about the base unit. A connector unit (), arranged between the base unit and the receiving unit, pivotally supports the receiving unit, providing rotational mobility about a pivoting axis. The connector unit is slidably supported with translatory mobility relative to the base unit. The actuator generates repeated bidirectional translatory movements of the base unit. In this way, the receiving unit is subjected to repeated bidirectional pivoting movements and, superimposed on the latter, repeated bidirectional translatory movements.

Dosage-dispensing device for free-flowing substances

A laboratory instrument for the preparation of samples includes a base housing with a work compartment enclosed by protective walls, at least one multifunctional work head having the ability to turn about a rotary axis pivotally supported on the base housing. At least two defined functional positions that can be aligned with at least one container platform which is arranged in the work compartment. The first functional position contains a receiving device which serves to hold a dosage-dispensing device with free-flowing dosage material, and each of the other functional positions contains an additional device. At least one of the protective walls has a cutout opening, and the at least one multifunctional work head is arranged partially in the cutout, so that portions of the at least one multifunctional work head lies both inside and outside of the work compartment.

Laboratory instrument for the preparation of samples

A dosage-dispensing head has a body with an end surface and an area that couples the head to a source container. The end surface has an outlet opening connected to the coupling area. The head also has a slider, constrained to a guided linear sliding movement parallel to the end surface. An aperture-setting member of the body turns about a rotary axis, orthogonal to the end surface, to actuate the slider. An orifice opening of the aperture-setting member is configured so that the outlet opening is always within the area of the orifice opening. A passage opening of the slider is between the body and the aperture-setting member. By turning the aperture-setting member, the slider moves in a linear path, linearly displacing the passage opening relative to the outlet opening and varying the aperture width of the dosage-dispensing head. This regulates the flow rate of the free-flowing dosage material.

Dosage-dispensing unit for free flowing substances

A receptacle for the weighing-in of free-flowing substances has a fill opening, a tubular-shaped circumference wall, and a bottom part. The bottom part is connected to the tubular-shaped circumference wall, which it tightly closes off in the direction of gravity when the weighing receptacle is in its operating position. The weighing receptacle can be set on the weighing pan of a balance and can be filled like a beaker with free-flowing substances without allowing the latter to escape therefrom. The bottom part can be opened either by an outside force acting on the weighing receptacle and/or through the influence of a solvent acting on the weighing receptacle, forming an outlet orifice in the bottom part. The weighing receptacle, otherwise tightly sealed in the direction of gravity, can be flushed out with a fluid when the outlet orifice is opened.

Receptacle for weighing prescribed target quantities of substances

A draft protection device for a laboratory instrument according to the invention encloses a weighing compartment that surrounds a balance pan and includes a rear wall, a front wall, two sidewalls, a top cover with at least one opening, and a floor that is delimited by border edges. The top cover is connected at least to one of the two sidewalls and/or the front wall and/or the rear wall in an arrangement where the top cover and the walls connected thereto are vertically movable together in relation to the balance pan. In addition, the vertically movable wall(s) are vertically moveable past the adjacent border edge(s) of the floor. In any vertical position of the top cover, at least one of the sidewalls is horizontally slidable relative thereto.

Draft protection device for a laboratory instrument, providing a weighing compartment of adjustable volume

A balance () has a balance housing (), a balance pan (), a weighing compartment () that contains the balance pan, a draft shield () with a fixed rear wall (), the draft shield enclosing the weighing compartment, a system of balance electronics (), a weighing cell () arranged below the weighing pan, and a weighing cell compartment () that encases the weighing cell. The weighing cell compartment is atmospherically connected by way of a hollow space () to the upper third of the weighing compartment. The balance electronics are arranged at the rear wall outside of the weighing compartment.

Balance with stable air stratification in the weighing compartment

A draft protection device for a laboratory instrument. The device encloses a weighing compartment that surrounds a balance pan. The draft protection device includes a rear wall, a front wall, two sidewalls, a top cover, and a floor that is delimited by border edges. The draft protection device further includes at least one guiding means that is connected to the top cover and serves to guide the movement of at least one horizontally slidable sidewall, and/or a holder means that is connected to the top cover and serves to hold the front wall in place, wherein the guiding means and/or the holder means supports the weight of the at last one sidewall and/or the front wall in such a way that the wall(s) is pushed by a biasing torque against the floor of the weighing compartment. This torque is supported by the border edge facing towards the respective wall.

Enclosure for a laboratory balance with a sliding side wall mounted such that the top guide sliding mechanism imparts a turning moment on the lower edge of the wall to press it against an abutment of the weighing compartment to form a seal

A dosage-dispensing device, which can be used for dosage materials in the form of powders or pastes, includes a housing with at least one receptacle compartment formed inside the housing for the purpose of holding the dosage material. The dosage-dispensing device further includes at least one dispensing head that comprises an elastic material and has an outlet for the dosage material. In the non-stressed condition, i.e. when there is no mechanical force or pressure acting on it, the outlet is tightly closed against the outside. When a force or pressure is applied, the outlet opens up, with the aperture width being variable, dependent on the applied force. Furthermore, inside the receptacle compartment and/or the dispensing head, there is at least one mechanical actuator element arranged through which the outlet can be opened.

Dosage-dispensing device for powders and pastes

A dispensing head for a powder or paste dosage material has a housing with an outlet opening, a bearing- and passage area, and at least one socket connected to a source container. A feeder chute is formed inside the housing. A closure shaft is in the bearing- and passage area, free to rotate about and to slide along its central longitudinal axis. The closure shaft is connected to a closure element arranged near the outlet opening. Moving the closure shaft in the axial direction controls the volume flow of the dosage material through the outlet opening. A limit stop restricts the displacement of the closure shaft along its central longitudinal axis. In the feeder chute, an opposing stop defines the closed position where the limit stop rests in direct contact against the opposing stop and the outlet opening is closed off by the closure portion of the closure element.

Dosage dispensing device for powders and pastes

A device for dispensing a dosage includes a base frame, at least one device for receiving any dosage-dispensing unit or functional unit that is compatible to be inserted therein, a holder and at least one drive mechanism. The holder has at least one holding position for a dosage-dispensing unit or functional unit. A weighing cell arranged on a lower horizontal plane of the base frame includes a load receiver to receive a target container. A changing mechanism enables the receiving device to be moved horizontally relative to the base frame. This horizontal shift allows a dosage-dispensing unit or functional unit to be interchanged between the holding position and the receiving device. The changing mechanism also permits the receiving device, together with the drive mechanism, to be moved vertically with regard to the base frame.

Dosage-dispensing device with a changing mechanism for dosage-dispensing units

A carrier for objects to be sequentially weighed is designed for connection to a load receiver of a weighing cell. The carrier has a supporting structure and a multi-compartment weighing tray. The supporting structure has an element for coupling the supporting structure to the load receiver and an element for connecting the weighing tray to the supporting structure in a guided and constrained manner. The weighing tray is seated or slid into place, leaving it free to perform a defined linear, swiveling, or rotary movement relative to the supporting structure. The weighing tray has at least two receiving compartments, arranged so that each can be sequentially moved into a defined loading position, fixed relative to the supporting structure. A positioning device, arranged between the supporting structure and the weighing tray, precisely aligns with the loading position the receiving compartment that is next to be moved into the loading position.

Multi-compartment weighing tray for a balance

A dosage-dispensing device includes a drive device and a source container that can be set into the drive device, wherein a dosage-dispensing head is connected to a closure shaft which is movably constrained in the source container. The closure shaft has a coupler part configured to be coupled to and uncoupled from a drive shaft of the drive device. The source container has a first form element which is designed for form-fitting engagement with a first counterpart element formed on the drive device and serves to precisely position the coupler part in relation to the drive shaft. The source container further has a second form element which is designed for form-fitting engagement with a second counterpart element formed on the drive device and which, when in operating position, serves to precisely position the dosage-dispensing head in relation to a target container.

Dosage-dispensing device for powders or pastes

A dosage-dispensing device for substances in powder- or paste form is equipped with a supply container and a dosage-dispensing head which is connected or connectable to the supply container and has a housing with an outlet orifice of circular cross-section. The dosage-dispensing head further has a delivery- and closure element, wherein the outlet orifice and the delivery- and closure element are arranged on the central lengthwise axis of the dosage-dispensing head, and the delivery- and closure element is designed to be rotatable about the central lengthwise axis in relation to the housing and to be capable of translatory displacement along the central lengthwise axis relative to the outlet orifice. The delivery- and closure element in its basic configuration is of a cylindrical shape and has at least one closure portion that serves to close off the outlet orifice and further has, adjacent to the closure portion, a delivery portion that serves to deliver the substance to be dispensed, wherein the delivery portion has at least one recess that is indented from the cylinder wall.

Dosage-dispensing device for substances in powder or paste form

A measuring instrument for the gravimetric determination of moisture has a housing with a test compartment arranged in the housing, as well as a weighing device installed in the housing. The weighing device includes a sample receiver that is disposed inside the test compartment when in the measuring position. A radiation source arranged in the test compartment which during a test process serves to heat the sample placed on the sample receiver. A suction device, arranged adjacent to the test compartment, remove moisture and any other volatiles given off by the sample during the measurement process providing a more stable flow pattern in the test compartment.

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Uster, Switzerland

Paul Lüchinger