A short common rail requiring less expensive manufacturing cost is provided. The common rail includes a short body portion formed of a thick tube body, a cap bonded to openings on both ends of the body portion, a securing flange bonded to one end of the body portion, a branch connector formed of a branch pipe or a branch joint fitting inserted into a through hole formed on the body portion and bonded thereto. The respective components are assembled and bonded by means of brazing or diffusion bon...

The common control equipment of a switching system including a plurality of functional block circuits is comprised of equipment for selectively actuating said functional block circuits in a desired sequence, which sequence is stored in a memory in said equipment. Several memories are provided to enable several sequences to be stored simultaneously so that any stored sequence can be actuated. In compliance with the type of connection requested by a call, the control equipment selects the memory e...

The PCM encoded digital data groups transmitted to a switching office are respectively stored a frame at a time and then read out from store in a sequence such that a plurality of digital groups are multiplexed on to a common bus. A common control framing detector continually monitors, at the multiplex point, all of the digital groups on a time multiplexed basis. The framing pattern status of each group is stored in a shared recirculating memory, which is continually updated in accordance with c...

An improved signaling circuit for use in telephone subsets, which provides an audible tone signal in response to incoming high voltage ringing signals appearing on any one or more of a multiplicity of telephone lines. The circuitry provides a timed burst of tone which is adjustable in volume and frequency. The volume, frequency and duration of the audible signal are independent of normal variations of the amplitude and frequency of the incoming ringing signal.

The invention relates to musical instruments of the general class wherein a vibratile member -- such as a wire or reed -- is struck by a percussive means to produce a note. There is provided a method of controlling the return of the percussive means against a stop member, after striking the vibratile member, by providing inertial means which the percussive means strikes and to which the kinetic energy of the percussive means is transferred, thus eliminating rebound of the percussive means from t...

A high speed common data buffer system is described for providing an interface and communications medium between a plurality of computers utilized in a distributed computer complex forming part of a checkout, command and control system for space vehicles and associated ground support equipment. The system includes the capability for temporarily storing data to be transferred between computers, for transferring a plurality of interrupts between computers, for monitoring and recording these transf...

A common mode rejection coupler having a pair of optical isolator circuits for receiving input signals which are the complement of one another. The optical isolator circuits generate output signals which are the complement of one another and which are normally isolated from a common mode voltage existing between the input and output of the isolators. The complementary outputs of the optical isolator circuits are shaped and one output is inverted so that both signals are in-phase with one another...

A common mode rejection coupler in a power switching system having a variable common mode voltage includes a first optical isolator circuit for receiving an input signal and generating in response thereto a first signal which is normally isolated with respect to the common mode voltage. A second optical isolator circuit receives the complement of the input signal and generates a second signal which is also normally isolated with respect to the common mode voltage. The first and second signals ar...

A clocking system is disclosed for a multichannel data transmission system which includes a temporary storage medium, such as magnetic tape. The system is an improvement over prior art systems which utilize a separate phase locked loop clock correction circuit for each channel. The described system utilizes a single clock for the multiple channels which operates at a frequency F that is an integral multiple of the channel baud rate. Means are provided to continually monitor the phase error of ea...

A common path interferometer is provided using one or more roof mirrors for effecting an optical path delay required to generate an interferogram of a target signature. The optical arrangement using the roof mirror separates the beam of radiation transmitted from the target to produce a fixed delay between the separated beams and, by rotating the roof mirror, a variable delay between the beams is obtained without leaving the target, thus generating an interferogram between the two interfering be...