A light path extending between first and second zones that are sealed relative to each other by a sealing gasket is provided. The light path includes at least one optical fiber. The optical fiber is provided with a metal coating and passes through the sealing gasket.

In a conductive path, a terminal portion is integrally formed at an end of the metallic conductor to be connected to the mating terminal. A metallic pipe accommodates the metallic conductor. A tubular-shaped insulating tube is provided between the metallic conductor and the metallic pipe. A bracket conductively connects the metallic pipe to the shielding shell of the apparatus side. The number of parts of the conductive path of the invention is less than that of the conductive path which has a t...

A path searcher used in a receiver includes a power delay profile generating unit configured to generate a power delay profile based on a signal received by the receiver, a sidelobe generating unit configured to identify a sidelobe component of a path contained in the power delay profile based on a response characteristic of a band-limiting filter of the receiver, a sidelobe removing unit configured to remove the sidelobe component from the power delay profile to produce a corrected power delay ...

An airplane or other vehicle is to be used for repeated traverses over an assigned area successively in respective different ones of a plurality of parallel paths displaced laterally one from another. Path alignment apparatus carried by the vehicle cooperates with delivery means that dispenses a material along each of the paths in a swath of predetermined width. The material includes an agent that presents characteristic radiation at a predetermined frequency. A sensing means is oriented to view...

A devious path bacterial barrier for providing an air/gas pathway to a sterile environment from an external environment, including a flat member lying within a plane and having spaced openings extending into the flat member and with one of the openings for communicating with the exterior environment and with the other of the openings for communicating with the sterile environment, a pathway extending between the openings and with the pathway extending within the flat member and along the plane o...

A monochromator has three ports or slits including two entrance slits and an exit slit. A single mirror and a diffraction grating define a first, folded path between an entrance slit on one side of the housing and an exit slit on the opposite side of the housing. The mirror is movable in and out of a second path between the second entrance slit and the grating so that a second path may be completed from the second entrance slit to the grating and thence to the exit slit. Alternatively two of the...

A low pressure drop air flowmeter (10) for an automotive engine is disclosed. The meter includes a main air flow passage (26), a relatively small venturi tube (28) receiving a portion of the air flow, a pressure port (74) for sensing stagnation pressure in the main passage, a pressure port (70) for sensing static pressure in the throat of the venturi, and a complimentary pair of sets of stationary swirl vanes (30 & 32) disposed adjacent the outlet of the venturi and operative to jointly impart a...

A rotary switch comprising a body supporting a shaft and a plurality of spaced apart stationary contacts located around the shaft. The shaft is supported for axial and rotary movement and carries a contact means for engaging the stationary contacts as the shaft is rotated to different angular positions. A stop fixedly supported by the body and a disc connected to the shaft and having two sets of teeth located in two different planes are provided for requiring the shaft to be moved axially and an...

An improvement in analytic instruments which measure liquid properties by optical techniques, the improvement providing an optical path through the liquid under test as low as about 0.1 mm by presence of a flat transparent surface across the optical beam and by flowing a film of the liquid under test down the surface, the depth of the film being the optical path through the liquid. Desirably the surface is normal to the beam, but at an acute angle to horizontal. A matted surface is desirable for...

A connector arrangement for optical fibers which includes programmable means for presetting an equalizer in a repeater connected to the fiber or adjusting the laser or LED power levels in a transmitter connected to the fiber. The equalizer coefficients (or the output power) depend on the fiber characteristics which remain constant at all times. Therefore, it is possible to preset the coefficents (or power) when replacing a repeater or a transmitter.