Abstract: A rectangular waveguide circulator consists of multiple sections that meet at a common junction where a tapered ferrite portion is disposed. A ferrite portion is disposed within a hollow space adjacent the common junction. The ferrite portion has a shape that includes an upper portion, a middle portion, and a lower portion, such that a cross sectional area of the upper portion is greater than a cross-sectional area of the middle portion, and such that a cross sectional area of the lower portion is greater than the cross-sectional area of the middle portion.

Abstract: Methods of encryption and decryption are described which use a key associated with an event to encrypt/decrypt data associated with the event. The method of encryption comprises identifying a key associated with an event and encrypting data using the identified key. The encrypted data is then published along with details of the event.

Abstract: Methods of encryption and decryption are described which use a key associated with an event to encrypt/decrypt data associated with the event. The method of encryption comprises identifying a key associated with an event and encrypting data using the identified key. The encrypted data is then published along with details of the event.

Abstract: A system that can enhance cognitive ability by viewing sequences of images captured during an event is disclosed. For example, the innovation can employ captured event sequences to improve failing memories in patients with a diagnosed memory condition such as acquired brain injury or neurodegenerative disease such as Alzheimer's disease. These event sequences can be captured in the point-of-view of a user (e.g., first person) as well as from a third person or other monitoring location (e.g., car).

Abstract: An expandable gate system is described in which (a) a main gate section comprises a plurality of parallel horizontal tubes each having an open end, and (b) a corresponding plurality of horizontal rails on a second section which are slidingly received in the open ends of the tubes of the main section. After the sliding section has been telescoped outwardly to its desired position, the sliding section can be secured to the main section to prevent further movement.

Abstract: Methods of encryption and decryption are described which use a key associated with an event to encrypt/decrypt data associated with the event. The method of encryption comprises identifying a key associated with an event and encrypting data using the identified key. The encrypted data is then published along with details of the event.

Abstract: The invention relates to methods and apparatus for displaying documents created by a particular user to that user. A source of documents created electronically by the user is accessed and an automatic selection of a plurality of parts of documents is made according to selection criteria. The selected parts are displayed sequentially on a peripheral display means associated with the user.

Abstract: A system that can enhance cognitive ability by viewing sequences of images captured during an event is disclosed. For example, the innovation can employ captured event sequences to improve failing memories in patients with a diagnosed memory condition such as acquired brain injury or neurodegenerative disease such as Alzheimer's disease. These event sequences can be captured in the point-of-view of a user (e.g., first person) as well as from a third person or other monitoring location (e.g., car).

Abstract: A compact lightweight antenna for receiving microwave direct line of sight wireless data signals used in services such as Local Multipoint Distribution Services (LMDS). The antenna provides for precise control over isolation of polarized signals. The antenna consists of an external parabolically shaped dome formed of a suitably resilient material such as thermoplastic. A polarizing conductive grating is formed on the interior surface of the dome and serves as a transreflector for initially passing received radiation having a vertical polarization. A twist reflector disposed at a point along an axis defined by the conductive grating reflects the received radiation, back in the direction of the transreflector with a different polarization. The now differently polarized energy is reflected by the parabolically shaped conductive grating at a feed point located in the center of the twist plate.

Abstract: A point-to-point microwave radio link that operates in a Frequency Division Duplex (FDD) mode using direct digital modulation with an ON-OFF Keyed (OOK) scheme. The transmit signal is generated by a circuit that uses an oscillator operating in a microwave radio band. The oscillator output is switched at the input bit rate. The output of the switched oscillator is then frequency multiplied by the predetermined factor to produce the modulated microwave output signal at the desired band.

Abstract: A compact lightweight antenna for receiving microwave direct line of sight wireless data signals used in services such as Local Multipoint Distribution Services (LMDS). The antenna provides for precise control over isolation of polarized signals. The antenna consists of an external parabolically shaped dome formed of a suitably resilient material such as thermoplastic. A polarizing conductive grating is formed on the interior surface of the dome and serves as a transreflector for initially passing received radiation having a vertical polarization. A twist reflector disposed at a point along an axis defined by the conductive grating reflects the received radiation, back in the direction of the transreflector with a different polarization. The now differently polarized energy is reflected by the parabolically shaped conductive grating at a feed point located in the center of the twist plate.

Abstract: A compact lightweight antenna for receiving microwave direct line of sight wireless data signals used in services such as Local Multipoint Distribution Services (LMDS). The antenna provides for precise control over isolation of polarized signals. The antenna consists of an external parabolically shaped dome formed of a suitably resilient material such as thermoplastic. A polarizing metal grid is formed on the interior surface of the dome and serves as a transreflector for initially passing received radiation having a vertical polarization. A twist reflector disposed at a point along an axis defined by the metal grid reflects the received radiation, back in the direction of the transreflector with a different polarization. The now differently polarized energy is reflected by the parabolically shaped metal grid at a feed point located in the center of the twist plate. Operation for transmitting energy is analogous.

Abstract: The cartridge (10) has a bulkhead (14) carrying a housing (16) on which is mounted a hollow inlet member (20). A valve member (24) is accommodated in the housing and is attached to a valve operating rod (26) extending through the bulkhead and having a pilot control system mounted on the opposite side of the bulkhead from the housing. A valve seat (28) is supported on the inlet member, which defines with the housing an outlet (30), across which the valve member travels when moving towards and away from the valve seat. The pilot control system has an outlet tube passing through the bulkhead and communicating with the interior of the inlet member and having an outlet tube passing through the bulkhead and opening outside the housing and the inlet member. The cartridge has a slam-shut valve member (32) slidable in the lower end of the inlet member operated by a cable (42) and an actuator (46).

Abstract: A radiator lifting and holding apparatus includes an upright support stand, a radiator clamping mechanism, a stop mechanism, and a radiator winch-type lifting mechanism. The clamping mechanism includes a pair of clamping members coupled to respective upright post members of an upright structure of the support stand for adjustable movement toward and away from one another for clamping a radiator therebetween at a desired elevation above the ground while at the same time allowing rotation of the radiator to a desired angular position. The stop mechanism is mounted on one upright post member of the support stand and is cooperable with one of the clamping members to lock the radiator against further rotation and thus maintain it stationary at the desired angular position.

Abstract: A method of removing lipid soluble process chemicals from biological materials containing the lipid soluble process chemicals comprising bringing the biological materials containing the lipid soluble process chemicals into contact with an effective amount of a naturally occurring oil extracted from a plant or an animal or a synthetic compound of similar chemical structure, agitating the resultant mixture, separating out an upper-phase and a lower-phase by sedimentation and decanting the upper-phase. The method is particularly useful for producing relatively virus free physiologically acceptable plasma.