Abstract: A rapid response patrol and antiterrorist vehicle (10) is disclosed which incorporates a weapon such as a machine gun (16) which can be extended through a roof opening of the vehicle (10) to control terrorist activity. However, when the weapon is in the storage position, the vehicle (10) has a totally conventional appearance.When the gun is to be used, the roof hatch (15) is retracted by a hydraulic motor (150) and is retracted into a space between a conventional appearing roof section (128) and an inner armored roof section (126). The weapon can then be raised on a pivotal weapon frame (18) which is activated by a rotary hydraulic motor (29). The pivotal weapon frame (18) can be securely fastened to a stationary support frame (22) within the vehicle by activating a locking pin (122). The control system prevents the pivotal weapon frame (18) from pivoting from its storage position to the firing position before the roof hatch (15) is fully retracted.

Abstract: The specification discloses a control module having circuitry for generating control and timing signals and for receiving digital data. A plurality of sensor modules are connected to the control module and each contains devices for sensing various physical characteristics, such as water level, rainfall or the like. In response to control signals generated by the control module, each of the sensor modules is operable to input digital data representative of the sensed physical characteristics to the control module. A recorder is connected to the control module and includes a removable recording cassette for recording the digital data transmitted from the sensor modules. The recorder also records the identification of the sensor module transmitting data, along with the calender day and the time of day that the data was transmitted.

Abstract: The specification discloses a digital method for measuring the volumetric flow rate of a flowing fluid, utilizing the change in electrical conductivity produced in a fluid by the introduction of a predetermined quantity of electrolyte. A temperature sensitive conductivity probe has an oscillator with an output signal frequency directly proportional to the conductivity of the fluid flowing between the electrodes of the probe. The conductivity probe is disposed in the fluid downstream from the point at which the electrolyte is introduced to alter the electrical conductivity of the fluid. The circuitry measures the increase in conductivity caused by the electrolyte during the period of time it takes the electrolyte to pass the conductivity probe and subtracts the integral of normal conductivity to determine the integral of conductivity produced by the electrolyte.

Abstract: The specification discloses a control module having circuitry for generating control and timing signals and for receiving digital data. A plurality of sensor modules are connected to the control module and each contains devices for sensing various physical characteristics, such as water level, rainfall or the like. In response to control signals generated by the control module, each of the sensor modules is operable to input digital data representative of the sensed physical characteristics to the control module. A recorder is connected to the control module and includes a removable recording cassette for recording the digital data transmitted from the sensor modules. The recorder also records the identification of the sensor module transmitting data, along with the calendar day and the time of day that the data was transmitted.