Abstract: An antenna assembly (10) for subsurface utility metering equipment includes a disk-shaped radiating element (50) which is connected through a wire (51) having a self-inductance to a capacitor C and then to a ground plane (41) and a connector (31) for a coaxial cable (30) to provide an LC circuit for impedance matching of the antenna assembly (10) to a transmitter.

Abstract: A disposable, cone-stack, self-driven centrifuge rotor assembly for separating particulate matter out of a circulating flow of oil includes first and second rotor shell portions which are injection molded out of plastic and joined together by induction welding engaging edges so as to create an enclosing shell with a hollow interior. An injection molded, plastic support hub is assembled into a central opening in the lower half of the rotor shell and extends upwardly into the hollow interior. An injection molded, plastic alignment spool is assembled into a central opening in the upper portion of the rotor shell and extends downwardly into the hollow interior. A cone-stack subassembly, including a plurality of individual separation cones which are injection molded out of plastic, are arranged into an aligned stack and positioned within the hollow interior and cooperatively assembled between the support hub and the alignment spool.

Abstract: A coalescing filter for separating oil from a blowby gas stream includes a coalescing filter element designed with a plurality of relatively small flow-through pores which have the potential for creating a high restriction when wetted due to the surface tension which results. In order to reduce the restriction level, the coalescing filter is attached to a rotating component, such as a gear, so that rotary motion is imparted to the coalescing filter and centrifugal force is generated across the plurality of flow-through pores. By generating centrifugal force, any oil which might otherwise remain in said pores so as to clog the pores is spun out so that the pores of the coalescing filter element remain in a "dry" condition such that any restriction to continued flow is substantially lower than the restriction level when the pores are wetted.

Abstract: An improved monitoring system for monitoring a fiber optic transmission system using optical side tones. The monitoring system includes a line monitoring equipment (LME) connected to a portion of an optical transmission system. The LME includes a pseudo-random sequence (PRS) tone generator for generating a PRS tone, a laser transmitter for transmitting an LME optical side tone based on the PRS tone. The LME includes a delay system for delaying the PRS tones, an optical filter for passing only the wavelength of the LME side tone. A plurality of data channels are transmitted over the system using WDM. A coupler is used to combine the WDM data with the LME side tone. A repeater having an optical loopback coupler returns a portion of the combined signal to the LME. The comparator/correlator correlates the delayed PRS tones with the LME side tone returned by each repeater.

Abstract: Apparatus for detecting fluid flow across an article is provided in which the article is received in a sealed chamber and protrudes into ambient surroundings from the chamber that is sealed. Any fluid flow through the article between the ambient surroundings and the sealed chamber can be detected after a pressure differential across the article is generated.

Abstract: This invention relates to an improved composite material leading edge/spar member for an aircraft control surface, and the like. The present invention provides a one-piece composite leading edge/spar member that is of a lighter and stronger construction offering dimensional stability, and an efficient method for manufacturing the same is also provided. A one-piece leading edge/spar member (12) includes a forward leading edge portion (22), and an aft spar portion (23). The forward leading edge and the aft spar portions are connected together as a continuous one-piece tubular member of composite material. The forward leading edge portion (22) may be rounded, and the aft spar portion (23) may include an aft web portion (24) and first and second rebate portions (26, 28). The rebate portions (26, 28) connect the web portion (24) to the rounded forward leading edge portion (22), and provide surfaces for the attachment of skin surface members (16, 18) thereto.

Abstract: A machine for removing book bindings from books so that the paper comprising the pages of the book can be recycled is provided. The machine includes a front and a rear deck, a pusher, a machine frame which extends above the decks and the pusher and a knife assembly (which includes a knife blade) swingably attached to the machine frame and having an up and a down position. The pusher slides back and forth between in and out positions. A book is placed on the front deck and the pusher slides to its in position, positioning the book under the knife assembly. When the book is properly positioned, the knife assembly swings from the up to the down position, cutting off the binding of the book. In some embodiments the invention includes a table frame upon which the front and rear decks are slidably mounted on railings supported by the table frame and have respective in and out positions.

Abstract: A mobile agricultural sprayer having a control system for controlling the amount of chemical additive added to a water stream from a mobile storage tank in response to a chemical additive concentration detector is disclosed. The mobile sprayer utilizes a mobile water storage tank and at least one chemical additive tank which communicates with the water to be sprayed at a point between the tank and the sprinkler heads. A pump draws water from the storage tank and directs it under pressure to the sprinkler heads. The chemical additive is typically added in liquid form, such as a solution or a slurry, at a point preferably upstream of the pump inlet while concentration is measured at a point between the point of addition of the chemicals and the sprinkler heads and preferably before the inlet of the pump. The concentration detector transmits information to a monitor which controls the amount of chemical introduced into the water to be sprayed.