Abstract: Shown and described is a device for back a plumbing fixture, in particular to a wall, essentially comprising a mounting rail preferably made of metal, which contains a large number of holes, slots or the like provided for the wall mounting and to the mounting of mounting plates for a plumbing fixture, the two rail longitudinal edges being designed as attachment zones offset from the mounting level. The object of the invention is to create a new device for back mounting a plumbing fixture with which in a simple fashion a number of a plumbing fixture can be mounted to a wall with precisely the same spacing from each other and in a precise arrangement to each other.

Abstract: A battery grip for diagnostic units comprises a grip sleeve for accommodating batteries, at the upper end of which a metal sleeve for accommodating a consumer load, such as an electric bulb, is mounted, a guide opening formed in the wall of the grip sleeve, a switching slide being guided the guide opening in a longitudinal direction of the grip sleeve, a contact member extending from a lower end of the grip sleeve with one contact end into the guide opening, and a contact spring member having one end conductively connected to the metal sleeve manner and another free end extending into the guide opening such that the free end is disposed above the contact member and is brought into contact with the contact member by displacing the switching slide. The contact between free end of the contact spring member and the contact member is created by at least two contact points. At least one longitudinal recess is provided in the contact end of the contact member.

Abstract: A headband apparatus for head-worn optical instruments includes a headband (12) and a bow (16) on which the optical instrument is fitted, and which is fitted with both its ends (100) to the middle region of the headband (12) such that it can swivel about a swivel axis (S) between a working position and a rest position. Fastening elements (26, 28) for releasably fastening additional elements (38) are fitted on the headband (12).

Abstract: A battery grip for diagnostic units comprises a grip sleeve for accommodating batteries, at the upper end of which a metal sleeve for accommodating a consumer load, such as an electric bulb, is mounted, a guide opening formed in the wall of the grip sleeve, a switching slide being guided the guide opening in a longitudinal direction of the grip sleeve, a contact member extending from a lower end of the grip sleeve with one contact end into the guide opening, and a contact spring member having one end conductively connected to the metal sleeve manner and another free end extending into the guide opening such that the free end is disposed above the contact member and is brought into contact with the contact member by displacing the switching slide. The contact between free end of the contact spring member and the contact member is created by at least two contact points. At least one longitudinal recess is provided in the contact end of the contact member.

Abstract: For an air-operated disc brake there is provided an internal brake actuator stroke indicator which provides an indication, readily ascertained from outside the brake caliper, of the amount of actuator stroke remaining in a disc brake apparatus before a remaining available actuator stroke limit is reached. In one embodiment, the stroke indicator is a mechanical device, readable through a sight glass in a caliper port, coupled to the brake actuator in a manner which results in rotary motion of the indicator when the brake actuator is displaced through its stroke. Alternatively, the indicator may be a rotary sensor such as an electrical potentiometer coupled to the actuator, where the potentiometer sends an electrical signal indicative of the actuator stroke to an external display, such as a remote actuator stroke display at a vehicle operator's position.

Abstract: A headband apparatus for head-worn optical instruments includes a headband (12) and a bow (16) on which the optical instrument is fitted, and which is fitted with both its ends (100) to the middle region of the headband (12) such that it can swivel about a swivel axis (S) between a working position and a rest position. Fastening elements (26, 28) for releasably fastening additional elements (38) are fitted on the headband (12).

Abstract: For an air-operated disc brake there is provided an internal brake actuator stroke indicator which provides an indication, readily ascertained from outside the brake caliper, of the amount of actuator stroke remaining in a disc brake apparatus before a remaining available actuator stroke limit is reached. In one embodiment, the stroke indicator is a mechanical device, readable through a sight glass in a caliper port, coupled to the brake actuator in a manner which results in rotary motion of the indicator when the brake actuator is displaced through its stroke. Alternatively, the indicator may be a rotary sensor such as an electrical potentiometer coupled to the actuator, where the potentiometer sends an electrical signal indicative of the actuator stroke to an external display, such as a remote actuator stroke display at a vehicle operator's position.

Abstract: In a dermatoscope having a number of light-emitting diodes (7), which are arranged around optics (6), for indirect illumination of an examination area, an optical waveguide (1) is arranged in front of each light-emitting diode (7), the light input surface of which optical waveguide (1) faces the associated light-emitting diode (7) and on whose outer wall the light which is emitted from the light-emitting diode (7) is totally reflected toward the examination area. Instead of a number of optical waveguides (1), a single conical prism is preferably provided, whose base faces the light-emitting diodes (7) and whose cone angle is designed such that the light injected into the base surface from the light-emitting diodes (7) is totally reflected on the outer cone surface.

Abstract: A laryngoscope (1) includes a socket (3) that is mountable on a hand grip, a spatula blade (2) that is coupled with the socket (3) and a light guide tube (4) that has proximal and distal end portions, with the proximal end portion of the light guide tube (4) being releasably mounted in a cavity (11) that extends completely through the socket (3) while the distal end portion engages in a snap-in device on the spatula blade (2). The light guide tube (4) has a completely uniform permanent cross section that improves the laryngoscope spatula (1) since the light guide tube (4) can be manufactured and serviced in an uncomplicated manner.

Abstract: A method of controlling primary measures for reducing the thermal nitrogen oxide formation in gas turbines, the primary measures being controlled according to a characteristic which characterizes an air-quantity-specific heat release rate in a combustion chamber of the gas turbine. In order to approximately determine the heat release rate, the power output available at an output-side end of a useful-power shaft of the gas turbine is used, and the air quantity is determined as a function of the ambient conditions. The useful power is preferably determined from the electric terminal power output of a generator driven by the gas turbine, and the electric terminal power output is advantageously corrected with a term which takes into account the combustion-chamber pressure. Furthermore, when the air quantity is being determined, if need be the position of an adjustable preliminary guide row is also taken into account.

Abstract: A laryngoscope (1) includes a socket (3) that is mountable on a hand grip, a spatula blade (2) that is coupled with the socket (3) and a light guide tube (4) that has proximal and distal end portions, with the proximal end portion of the light guide tube (4) being releasably mounted in a cavity (11) that extends completely through the socket (3) while the distal end portion engages in a snap-in device on the spatula blade (2). The light guide tube (4) has a completely uniform permanent cross section that improves the laryngoscope spatula (1) since the light guide tube (4) can be manufactured and serviced in an uncomplicated manner.

Abstract: A bar skiascope that has lens slide for displacing a condenser lens along a direction of a light beam also includes a stop slide that can be displaced up to a predetermined maximum position in a displacement path of the lens slide, wherein the condenser lens is located precisely in a position for producing a substantially parallel beam, when the stop slide is in the maximum position, and a stop slide stop element, belonging to the stop slide, and a lens slide stop element, belonging to the lens slide, come into contact with each other.

Abstract: A binocular indirect ophthalmoscope has illumination optics which have a tilted mirror that can be substantially-linearly displaced, by use of a first control, perpendicular to a beam path of an illumination beam exiting the ophthalmoscope, and that can be independently pivoted, by use of a second control, about an axis perpendicular to the beam path of the illumination beam and perpendicular to a direction of linear displacement, the mirror directing light of the illumination beam onto a retina of a patient. First and second controls for linearly moving and pivoting a tilted mirror are coupled to each other in such a way that the second control can be held at a fixed position relative to a housing of an ophthalmoscope.

Abstract: An apparatus for testing visual acuity, or clearness of vision, particularly when there is impaired refracting medium in an eye, includes a lamp (1) and a pin-hole diaphragm (4) arranged in a light-beam path downstream of the lamp with a single diffraction grating (6), being provided in the light-beam path downstream of the pin-hole diaphragm.

Abstract: A camera apparatus for macrophotography is provided, having an attachment with a fixed lens, a translucent cap removably attached to the subject-side end of the attachment, and a contact disk or spacer ring attached to the subject-side of the cap and which defines a plane which includes the lens focus. The cap preferably is translucent, permitting flashtube light to be directed from the attachment to the target to be photographed.

Abstract: A semiconductor switching network is disclosed in which complementary bipolar transistors are employed as "floating" crosspoints. Each crosspoint consists of a pair of complementary bipolar transistors with each transistor being connected in series with one of the leads of the communication pair. Each one of the complementary bipolar transistors is, in turn, surrounded by a "protective control shell" of diodes and transistors which provides the crosspoint with overvoltage and reverse voltage protection and secures crosspoint turn-off. Additionally, the protective control shell contains a self-bias arrangement to eliminate the need for external power supplies to operate the crosspoint as well as an optoisolator control circuit to eliminate direct connections to external control circuits.

Abstract: Signal transmission circuit characteristics are supplemented by a negative conductance circuit in which current sources of complementary polarity are connected in shunt between the conductors of the signal circuit. Changes in the voltage level of one side of the signal circuit are sensed at a point common to the two sources and applied through a positive impedance to control the current output magnitude of one of the sources for effecting a supplementing of the signal circuit current as though the changed voltage level had been applied in the presence of a negative form of that impedance connected at that common point.In additional embodiments, different, or variable, positive impedance are connected in the sensing circuit output coupling to cause the negative of such impedance to appear at such signal circuit terminal.

Abstract: Improved current mirrors are provided by connecting current mirrors of known types in cascode.