Abstract: An internal combustion aircraft engine comprising a cylinder head having a cylindrical head bore formed therein, a piston, and spark plugs, the cylinder head bore and piston designed to reduce engine knock. The cylinder head is fixedly attached to a top end of a cylinder barrel formed with cylindrical walls, the cylinder head bore and the cylindrical walls defining a cylinder. The cylinder head bore has formed therein an outwardly protruding cavity with respect to the top end of the cylinder barrel. The piston has a piston crown, and the piston contained within the cylinder, the piston crown, the cylinder walls, and the cylinder head bore define a combustion chamber. The piston crown has a concavity formed therein, and the piston is constructed and arranged to reciprocate within the cylinder. The concavity of the piston crown and the cavity cooperate at a top dead center position of the piston to form a swirl chamber.

Abstract: A small, lightweight housing includes a plurality of light signal transmitters and can be attached to the body such as the wrist of an operator such that another part of the body or another object can be brought into the beam of a particular light transmitter to reflect or scatter the light signal from one of the light signal transmitters and coded such that a particular light transmitter can be distinguished. A receptor associated with the housing receives the reflected or scattered or scattered light and alters the signal applied to a light signal transmitter, such as by increase of power, increase of the number of similarly modulated light transmitters which are driven or coding such as imposition of additional modulation. A signal is then received from an optical link by an optical receptor at a base station.

Abstract: An integrated system for certifying the safety and efficacy of intravenous (“IV”) pumps is provided wherein a test station having a first component in liquid flow communication with a pump to be tested and a second component adopted for electrical connection to the pump can be operated accurately by persons without extensive technical training and without the need to ship the IV pump off-site. In a preferred embodiment, an output element prompts the operator to input responses based upon a prescribed test protocol to certify the safety and efficacy of the IV pump's operation.

Abstract: Methods of administering a game in a wireless embodiment utilizing failure fallback and recovery between automatic and manual modes is disclosed. In one embodiment, a remote game device listens for a game state message and verifies the presence and signal strength of a game state message. If the signal strength is weak or there is no signal, the remote game device transitions to a manual mode to allow a user to manually update game state and continue play in an uninterrupted manner. Once signals of sufficient strength are received, the remote game device transitions from the manual mode to an automatic mode.

Abstract: A wireless control device includes a small, lightweight housing worn by an operator, for example on the operator's wrist, and a controlled device, for example a personal computer. Several optical emitters, preferably light emitting diodes operating in the infrared range, and several optical detectors are provided on the housing. At least one x-axis emitter-detector pair operates to detect an x-direction of a pointing motion or gesture, and at least one y-axis emitter-detector pair operates to detect a y-direction of a pointing motion or gesture. This motion can then be used to cause a response in the controlled device. For example, angles of the operator's hand at the wrist can be interpreted to induce motion of a cursor on a computer display. The device may also include a motion sensor, an environmental condition sensor, or a voice recognition sensor, and can also be adapted for gesture recognition and image scanning applications.

Abstract: The present invention provides a fuel control apparatus with a modular fuel pressure modifying mechanism (i.e., a fuel metering section) and modular fuel regulator mechanism (i.e., a fuel regulator section) that can each be calibrated independently of each other, and independent from the modular air passage mechanism (i.e., an airflow section). The modular fuel pressure modifying mechanism is constructed and arranged to be calibrated prior to being mounted to the air passage mechanism. The fuel regulator mechanism is constructed and arranged to communicate with the airflow in the air passage mechanism and the modular fuel pressure modifying mechanism to regulate an amount of fuel delivered to the engine. The modular fuel pressure modifying mechanism and the modular fuel regulator mechanism are removably mountable to the modular air passage mechanism independently from each other.

Abstract: The present invention relates to an improved method for the manufacture of aircraft engine cylinder barrels to prevent their premature failure due to hairline cracks or specks thought to be caused by caustic stress corrosion cracking during black oxide treatment. Machined aircraft cylinder barrels immersed into a black oxide chemical bath composed of a solution containing about 60% sodium hydroxide, about 0% sodium nitrate, and about 40% sodium nitrite most effectively prevents specks and hairline cracks. Since residual stresses from machining also contribute to the probability that specks or hairline cracks will occur during black oxide treatment, the maximum selected number of cylinder barrels essentially free of detectible specks or hairline cracks determines the maximum number of cylinder barrels to be machined on a given set of tool bits.

Abstract: A wireless, redundant, secure, real-time, network for a proprietary interactive data transfer system having a remote terminal and a host data center, such as an automated teller banking system, is disclosed. Controllers for the remote terminal and the host data center receive the proprietary language messages and packetize and encrypt the messages for sending over the best wireless carrier among the plurality of wireless carriers the controllers are connected to. The wireless control protocol monitors the communications to provide for selection of the most reliable communication carrier for any part of a transmission. Each network segment of the signal path has at least one state-controlled gate which reports the status of that signal path. Real time transmission and acknowledgment of securely packetized messages on wireless communications carriers via an object oriented coding control application provides for reliable datagram transfer independent of the reliability of any one signal path.

Abstract: An optical collimator device for use in aligning a gun bore with a gun sight is formed of a graticule and lens which are located within the optical collimator device housing. The optical collimator device is mounted on the end of the gun barrel with a magnetic bar and rail structure formed in the optical collimator device housing and this magnetic bar and rail structure allows the optical collimator device to adjust vertically for use with guns with low sights and with raised sights and large bore diameters such as shotguns and baton guns.