Abstract: A game has as its object to move a playing piece, in the form of a segment of a sphere, along a low-friction game board surface by dropping a ball or other object onto the playing piece. In a preferred embodiment the ball is permitted to ride on a track formed by two flexible members held in tension by the player. Upon release of the tension the ball drops. The game board is marked with different areas into which the playing piece is to be moved.

Abstract: A fluidic oscillator flowmeter employs a fluidic oscillator wherein the frequency is proportional to flow through the oscillator. The oscillating flow is divided into two discrete paths, facilitating the counting of the frequency and the transduction of the frequency into a flow measurement indication. In one embodiment the flowmeter may be inserted into a large flow stream, wherein it utilizes only a small portion of the measured flow and presents a streamlined profile to the flow to minimize pressure losses. Alternatively, the entire measured flow may be passed through the flowmeter.

Abstract: Blood pump comprising an inlet valve, an outlet valve, and a displacement chamber being portions of a common flexible tubing being squeezable between fixed wall means and two spaced, movable valve plungers and a displacement plunger arranged on the portion of the tubing therebetween, wherein the valve plungers in the flow direction of the tubing have a dimension exceeding 5 mm and that in the tubing, with the valve plungers in closed position, a slot is left with a height less than 0.5 mm.

Abstract: A station carrier telephone system employing single sideband transmission permits optimal utilization of the available frequency spectrum without requiring individual stable subscriber carrier sources by utilizing a common source signal for all subscriber carriers. The common source signal is received via the common transmission line at each subscriber circuit where it is processed and mixed with the similarly received central office carrier to derive a difference frequency signal which serves as the subscriber carrier. In a preferred embodiment sixteen channels share the common transmission line and employ sixteen adjacent subscriber frequency bands and sixteen adjacent central office frequency bands.

Abstract: In a multi-channel mobile radio telephone system with multiple base stations covering different geographical areas, mobiles may move freely from area to area and automatically originate and receive calls to and from a landswitched telephone network by direct dialing to and from anywhere in the system by means of a Roving Mobile Call System (RMCS). Mobile subscribers operating out of range of their home base stations (where they are registered for billing purposes) may originate any class of call via any base station in the system and be billed by the home base station by means of intercommunicating base stations in a Roving Mobile Ticketing System (RMTS). Provision is made for tariff sharing as necessary by participating stations. All call signalling and central signalling is performed out-of-band. Call signalling from any base station to mobiles is common to all radio channels transmitted by that station.

Abstract: The fluidic oscillator consists of a resonant fluid circuit having a fluid inertance and a dynamic fluid compliance. The inertance is a conduit interconnecting two locations of a chamber on each side of a working fluid jet issuing into one end of the chamber, the inertance conduit serving to transfer working fluid between the two locations. Through one or more output orifices located approximately at the opposite end of the chamber, the fluid exits from a chamber exit region which is shaped to facilitate formation of a vortex (the dynamic compliance) from the entering fluid. The flow pattern in the chamber and particularly the vortex in the chamber exit region provide flow aspiration on one side and surplus of flow on the opposite side of the chamber, which effects accelerate and respectively decelerate the fluid in the inertance conduit such as to cause reversal of the vortex after a time delay given by the inertance.

Abstract: A signal classifier performs measurements on an IF signal and determines from these measurements the nature of the modulation, if any, appearing on a received high frequency communications signal. The classifier distinguishes between double sideband AM, single sideband suppressed carrier voice AM, ASK, FSK, multi-channel FSK, unmodulated carrier and noise. The measurements include AM variation, the zero crossing rate in detected AM, the percentage of time the detected AM signal level exceeds a given amplitude, and wide and narrow band detected FM.

Abstract: Improvements are provided for a vehicle locator system of the type in which vehicle-borne emitters radiate coded tone combinations for reception by spaced sensors which are linked to a central decoding office. In one improvement the vehicle capacity of the system is increased without increasing the number of tone oscillators by using a sequential tone coding arrangement wherein each oscillator is switchable to provide a different tone during different intervals in the coding sequence. In addition, the pulsing rate of the emitted tone is synchronized to the vehicle odometer to assure that a code sequence is transmitted while the vehicle is in the proximity of each sensor station.

Abstract: A reclining or semi-supine aircrew ejection seat is provided with an ejection gun that is in the usual upwardly extending and rearwardly inclined attitude, and the seat is attached to the portion of the gun assembly that leaves the aircraft by a pivotal connection between the back of the seat and the upper part of the gun assembly portion. This allows the part of the seat that supports the user's back to extend forward away from the pivotal connection and the gun assembly. During the initial phase of ejection, the seat turns angularly, bringing the part of the seat that supports the user's back against the gun assembly.

Abstract: A concrete forming structure is provided wherein a pair of substantially parallel trusses have a plurality of beam members placed transversely across their upper end with a substantially planar upper deck secured to the upper edges of the beams. Each beam has an upper portion which comprises an open, inverted top hat section into which a wooden joist member may be forced and graspingly secured in snug manner. Panels, such as plywood, which are usually used for concrete forming, may be nailed or screwed to the concrete forming structure at the wooden joists engaged in the open top hat sections of the beams. The deflection resistance of a beam having a wooden joist graspingly and snugly secured therein is improved over that of an I-beam having a similar metal cross-section.