Abstract: A brightly colored underwater signaling device having a brightly colored watertight container filled with one or more freely-movable spherical objects. Vigorous displacement of the container causes the spheres to collide with and impact both each other and the inner wall of the container to produce an audible rattling sound with a pitch, timbre and intensity which is easily transmitted through water. The device is preferably constructed of PVC pipe containing a plurality of ball-bearings and connected to a skin diver's diving apparatus with a connecting strap.

Abstract: A paper holding apparatus suitable for holding undersized paper products in a typewriter mechanism. The paper holder includes two flexible plastic strips mounted on a backing. The strips have opposed recesses in which the undersized paper product may be positioned. The holder is of sufficient size to operate normally in a typewriter mechanism. It may be reusable or disposable depending upon the application.

Abstract: A unified system of programming communication for use on individual computer systems with capacity for generating relevant user specific information simultaneously at each station of a plurality of subscriber stations. The system includes a transmission station which is a central control system of a system of receiver station computers controlled by the station transmission. Each individual computer system is self-structuring in that any given transmission station can transmit control information causing selected apparatus at selected receiver stations to combine the computers at those stations based on the transmission of the station, thereby causing the individual computers to come under control of station. The unified system also includes apparatus for combining the user specific information generated at subscriber station into broadcast programming, so that broadcast programming is displayed at every station with user specific information displayed in the broadcast programming.

Abstract: The invention relates to a tamper-resistant lock. The improved lock incorporates metal wafers which rest on the bottom pins in the inner cylinder of a cylindrical key lock. The wafers and the pins upon which they rest alternately incorporate holes in their topside. The wafers and the bottom pins cooperate with trap pins housed in the outer cylinder of the lock at a 45.degree. angle from the vertical insertion position of the key. The trap pins are urged into the holes in the wafers and bottom pins when tampering occurs. This apparatus prevents both the picking or impressioning of the lock, common alternative techniques for opening a key lock without the key. The improved lock also incorporates a feature to prevent unauthorized opening by rapid spinning of the lock by a spring-propelled insert placed into the lock cylinder after it has been picked.

Abstract: Disclosed is a monitor apparatus which can be worn by a patient and will provide an indication of activity levels over a number of subsequent time periods. A transducer which is energized by the ambulatory subject's movement, provides an activity pulse into a temporary memory. At the end of a standard timing interval, for example fifteen (15) minutes, a digital code word representative of the total number of activity pulses in that standard timing interval is fed into a solid state memory. The temporary memory is then reset and counts the activity pulses over the next standard timing interval. In this manner, activity levels for any number of sequential time intervals can be recorded without hindering the patient's movement. A contol logic circuit, which is externally triggered, causes the permanent memory to sequentially readout the activity levels of subsequent standard timing intervals for use in studying the activity levels of ambulatory subjects.

Abstract: An apparatus for spreading a coherent light beam produced by a laser or lasers into a selected pattern. The selected pattern of coherent light, generally a ribbon-like shape, can be used to place a desired amount of electromagnetic energy at a selected frequency for a selected time period on a generally flat surface. The projected coherent light pattern can be used to cure or dry inks without scorching the underlying paper. The control of the intensity of the coherent light allows drying operations at higher speeds than currently feasible.

Abstract: A vehicle barricade including a barrier plate which can be raised or lowe and a counterweighted sector mounted near the side of the barrier plate. The counterweight is mounted on the sector so that the barrier plate will remain in the raised or lowered position without independent mechanical aid. The barricade is so constructed and secured that it is able to withstand impact from either heavy or light vehicles. The barricade may also be reenforced by placing auxiliary pillars adjacent to the barrier plate and which pillars cooperate with the barrier plate to further secure it when raised.