Apparatus is described for transmitting signals between electric terminals through photo diodes to electrically isolate circuits connected to the terminals, which is compact and rugged. The apparatus includes a metal shell, (24, FIG. 2) a pair of circuit boards (40, 42) mounted in the shell and axially spaced apart, pairs of terminals (12, 14) with one terminal of each pair mounted on a different one of the circuit boards, and pairs of photo diodes or other optoelectric transducers (16, 18). Eac...

An input light beam is deflected by a totally reflective surface of a corner prism towards another surface of the prism which is coated by a partially reflective coating. A predetermined percentage of the input power is reflected by this coating and the remainder transmitted therethrough. The reflected optical power is collected by an output fiber and the transmitted power is directed towards another coating which either totally or partially reflects such power to another output fiber to accompl...

A pipe coupler for connecting pipes together is disclosed. The pipe coupler includes a cylindrical socket. A pair of insertion grooves are formed inside the socket, and each of a pair of packings is inserted into each of the insertion grooves to seal off connecting portions of two pipes. A plurality of withdrawing paths are formed inside both end portions of the socket, and a pair of binding grooves respectively communicate to the pluralities of the withdrawing paths. A plurality of protuberance...

A coupling device joins and axially aligns segments of a driveshaft or other shaft to form one, continuous length, shaft for use in a machine press.

The coupler tool of the present invention includes a ring having oppositely facing radial flat parallel sides and radial outer edges beveled toward one another. Extending axially outwardly from one of the sides is a handle portion. The handle portion includes a pair of laterally spaced apart arms extending axially outwardly from diametrically opposite areas of one side of the ring and a hand grip extending between the arms in axially spaced relation from such one side.

An optical coupler is provided with two receptacles for receiving connectors mounted at a predetermined angle relative to one another with a light guiding element disposed therebetween. The light guiding element may be a reflective surface, a length of optical fiber, a planar waveguide, or a polymer waveguide. The optical coupler of the present invention is preferably used in combination with an optical backplane to interconnect the backplane with a daughtercard.

In a second stage of the insertion of a male coupler 1 into a female couple 2, a stationary valve member 5 of the female coupler 1 moves a secondary movable valve member 47 of the male coupler 2 rearwards relative to a primary movable valve member 38 of the same so that the front end portion of the stationary valve member 5 advances into the front end portion of the primary movable valve member 38 and, thus, the interior surface of the front end portion of the primary movable valve member 38 cov...

A microstrip coupler is provided which includes an controlled capacitance bridge for improved directivity as compared to prior art controlled capacitance bridges. The novel controlled capacitance bridge provides the functionality of prior art wire or ribbon controlled capacitance bridges and also provides the necessary capacitance to compensate for the different phase velocities of odd and even modes in the transmission lines. Both the dimensions of the controlled capacitance bridge and the dime...

A coupler for use in joining two pipes in a butt joint. The coupler includes a band clamp and a split sealing sleeve disposed inside the band clamp for encircling the abutted ends of the pipes. The split sealing sleeve has a tongue-and-groove sealing joint at the confronting free ends of the sleeve. The sealing joint has a member at the mating edges to provide a resilient interference fit of the tongue-and-groove.

A directional coupling device includes a main line and a sub line, and line coupling (distributed constant coupling) is effected between the main line and the sub line, each of which has a portion that is arranged substantially parallel to each other and alongside each other. The sub line is longer than the main line. The main line is a substantially straight line or a substantially straight line bending at a predetermined position, i.e., a non-spiraling line, and the sub line is arranged to cir...