Abstract:
A wall fastener includes a nut having a major planar structure having a hole for receiving a screw, the major planar structure having a first end with two staggered knife edges on opposite sides of the major planar structure and a second end; and a string, wherein the string is detachably connected to the major planar structure.
Abstract:
A wall fastener includes a nut having a major planar structure having a hole for receiving a screw, the major planar structure having a first end with two staggered knife edges on opposite sides of the major planar structure and a second end; and a string, wherein the string is detachably connected to the major planar structure.
Abstract:
A method is described for reduction of occlusion effects in an acoustic appliance which closes an auditory channel, wherein an audio signal in the transmission path of the acoustic appliance is processed by a signal processing unit and is emitted via an output transducer, which is arranged in the auditory channel, as an acoustic signal. A resultant sound signal is then detected by an auditory channel microphone and is supplied to a variable loop filter which is arranged in a feedback loop of an occlusion reduction unit for the acoustic appliance. The output signal from the loop filter is injected into the transmission path of the audio signal. The occlusion reduction unit is in this case controlled adaptively, with at least one signal from the transmission path of the audio signal and/or from the feedback loop being used to control the loop filter for the occlusion reduction unit.
Abstract:
A wall fastener includes a nut having a major planar structure having a hole for receiving a screw, the major planar structure having a first end with two staggered knife edges on opposite sides of the major planar structure and a second end; and a string, wherein the string is detachably connected to the major planar structure.
Abstract:
A unitary mechanical injector-vitrector hand tool for use in extracting vitreous material from an eye and injecting another fluid into the eye includes a housing body having a proximal end, a distal end and a variable volume cavity in the housing body for establishing a negative pressure or suction. A needle having a sharpened point and a central bore is connected to the proximal end of the housing body. An aperture is formed in a sidewall of the needle near the sharpened end. An inner hollow reciprocal cutter is fitted in the central bore of the needle and has a cutting edge adapted for travel across the aperture. A first manually actuatable lever is pivotably mounted to the housing body and coupled in driving relationship with the reciprocal cutter. A valve assembly is operatively positioned between the needle and the variable volume cavity and arranged to open to apply suction to the needle central bore as the reciprocal cutter travels across the aperture so as to withdraw vitreous material falling into the hollow cutter. A pressurized source of fluid is coupled by a conduit through the central bore of the needle and cutter and selectively actuated to replace the removed vitreous material with other material such as an antibiotic.
Abstract:
A telemetry coil arrangement for the telemetric reception of transmitted signals, in particular in cardiologic implants, comprises coils of varying diameters and numbers of windings suited thereto.
Abstract:
There is described a hearing device. A module is enabled to be easily attached to the casing of a hearing device, in particular a hearing aid. Toward that end a bridge is provided which has a drilled hole. A screw is inserted through a drilled hole in the module and screwed into the drilled hole of the bridge so that the module or, as the case may be, the closure of the opening is compressed onto the opening by means of the screw. Alternatively a cylindrical projection into which the screw is screwed can also be molded onto the inner wall of the casing.
Abstract:
A magnetic thickness gauge is disclosed wherein a balance arm is pivotally mounted in a housing with a spring providing a bias force to counteract a magnetic attraction of the balance arm toward a base of a coating to be measured. The balance arm is provided with a probe assembly including a magnet selectively positionable with respect to a spherical contact member of either a particular alloy of aluminum, iron and silicon or of tungsten carbide. The housing is preferably provided with supports at either end of the gauge. A balance arm is moved by way of a protrusion provided between the probe assembly and an adjustment knob for the spring with a scale and pointer indicating the thickness of the coating to be measured.
Abstract:
A coating thickness and surface comparator for measuring the thickness of nonmagnetic coatings (28) or roughness on ferromagnetic base materials. A permanent rod magnet (6) and a ferromagnetic rod (16) are supported by nonmagnetic slides (12, 14) parallel to one another. When a standard base (24) is placed at one end (22) of the rod magnet (6) and a coated or roughened base (30) is placed at the other end, the slides (12, 14) are pushed together toward the middle of the rod magnet (6). The coincidence of the slides (12, 14) varies from the middle of the bar magnet (6) in proportion to coating thickness (28) or roughness.