Abstract: A stock for restraining an animal has a screen with two sides formed into a V-shape. The screen is supported in a frame and there are rods of appropriate thickness and length to extend through openings in the screen on either side of the stock in order to restrain the animal between the rods and the screen. The numerous openings in the screen allow an infinite number of adjustments to be made in the positioning of the rods for animals of different shapes and sizes.

Abstract: A bandpass filter has a plurality of cascade cavities that operate in a dual-mode and are mounted in a planar relationship to one another. Each cavity contains a dielectric resonator and resonates at its resonant frequency in two HE.sub.11.delta. modes. An iris is located between adjacent cavities and contains an aperture that can independently control inter-cavity coupling. The dielectric resonator is cylindrical in shape and an adjustable metallic plunger is located in a wall of each cavity so that the cavity can be tuned over a relatively broad range. The filter has good mechanical and thermal stability as well as being extremely flexible in the arrangement of cavities.

Abstract: A waveguide lowpass filter operates in at least two evanescent modes. The filter has successive ridges with a space between said ridges. The ridges are associated with parallel capacitance and a space between them is associated with series inductance in the TE.sub.10 mode. Each ridge is top-loaded so that series capacitance can occur in a TM.sub.11 mode in parallel to said series inductance. The filters of the present invention can be made smaller than previous evanescent lowpass filters and can achieve improved results.

Abstract: An odd order bandpass filter has at least one cavity resonating at its resonant frequency in three independent orthogonal modes. The filter has at least one feedback coupling that is made to resonate and change sign at a center frequency. When the filter has two cavities, one being a triple cavity and the other being a dual mode cavity, the filter can be operated to achieve an elliptic function response. Also, the filter of the present invention can achieve a weight and volume reduction when compared to six-pole dual mode filters.

Abstract: A bandpass filter has a plurality of cascade wave-guide cavities each resonating in three independent orthogonal modes. The cavities can be cylindrical or have a square cross-section. Where the cavities are circular, each cavity resonates in TE.sub.111 or TE.sub.010 modes simultaneously. Where the cavities have a square cross-section, each cavity resonates in TE.sub.011 and TM.sub.110 modes simultaneously. Between each triple-mode cavity, there is located an iris having an aperture with four separate radial slots that are offset from a center of the iris. The filter is capable of producing an elliptic function response. In a variation of the invention, an allpass filter has an output that is short circuited and, when used in conjunction with a circulator, it functions as a group delay equalizer. Previous triple-mode filters are not capable of producing an acceptable result relative to dual-mode filters.

Abstract: A tool that can be used to manually lock and unlock a passenger door of a motor vehicle from the driver's seat of said vehicle has an elongated handle and a head. The head has two channels and a hook that can be used to lock or unlock different types of locking mechanisms on passenger doors.

Abstract: A bandpass filter has a plurality of cascade waveguide cavities each resonating in three independent orthogonal modes. The cavities can be cylindrical or have a square cross-section. Where the cavities are circular, each cavity resonates in TE.sub.111 or TE.sub.010 modes simultaneously. Where the cavities have a square cross-section, each cavity resonates in TE.sub.011 and TM.sub.110 modes simultaneously. Between each triple-mode cavity, there is located an iris having an aperture with four separate radial slots that are offset from a center of the iris. The filter is capable of producing an elliptic function response. In a variation of the invention, an allpass filter has an output that is short circuited and, when used in conjunction with a circulator, it functions as a group delay equalizer. Previous triple-mode filters are not capable of producing an acceptable result relative to dual-mode filters.

Abstract: A multiplexer has a plurality of bandpass filters coupled through E-plane or H-plane T-junctions to a waveguide manifold. Where the multiplexer has four channels and each filter is a six-pole filter, two triple mode cavities make up each filter. Where each filter is a five-pole filter, one triple cavity and one dual mode cavity makes up each filter. Two band edge channel filters are operated to produce an asymmetrical filter function response, thereby causing extra transmission zeros to be created and improving the selectivity of the filter out of the passband. The multiplexer is designed for use in satellite communication systems and can have a reduced volume and weight when compared to previous multiplexers without any sacrifice in electrical performance.

Abstract: A process for the recovery of cyanide from thiocyanate. An aqueous solution containing thiocyanate is introduced into an electrochemical reactor. The reactor is activated for an appropriate time period while the pH of the solution is maintained in the range of 1 to 4. The cyanide formed can be recovered, in various ways including recovery as hydrocyanic acid. Alternatively, an aqueous solution containing thiocyanate is introduced into a suitable electrochemical reactor. The reactor is activated for an appropriate time period while the pH of the solution is maintained in the range of 10 to 12 to produce relatively harmless products, for example, cyanate, ammonia, carbon dioxide and nitrogen.

Abstract: A process for the recovery of cyanide from thiocyanate. An aqueous solution containing thiocyanate is introduced into an electrochemical reactor. The reactor is activated for an appropriate time period while the pH of the solution is maintained in the range of 1 to 4. The cyanide formed can be recovered, in various ways including recovery as hydrocyanic acid. Alternatively, an aqueous solution containing thiocyanate is introduced into a suitable electrochemical reactor. The reactor is activated for an appropriate time period while the pH of the solution is maintained in the range of 10 to 12 to produce relatively harmless products, for example, cyanate, ammonia, carbon dioxide and nitrogen.

Abstract: An electrochemical bipolar reactor has numerous conductive particles held in a fixed relationship to one another with non-conductive material wedged between at least some of the particles to electrically insulate those particles from other particles. In one embodiment, the conductive particles are separated into discrete layers by layers of non-conductive material. In another embodiment, the conductive particles are each partially covered with a layer of non-conductive material. In either case, the non-conductive material is pervious so that electrolyte can readily contact the conductive particles. The reactor has a low void volume and current leakage is minimized. The reactor of the present invention is particularly suited to process high volume wastes and can be constructed easily without machine parts. Also, the reactor can be operated over a wide range of conditions.

Abstract: A bandpass filter 8 has a plurality of cascaded wave-guide cavities 11, 12 1N and inter-cavity coupling means 36, 37. One or more of the cavities 12, 1N is rotated relative to an input reference mode 52. The rotation causes quasi-orthogonal coupling structures to be introduced into said cavities 11, 12 1N. The rotation of one or more cavities enables symmetric or asymmetric amplitude and phase responses to be produced as desired.The filter can be used in channel multiplexers for satellite communication systems.

Abstract: An air deflector for use with an air register of the type commonly found in residences, has a rectangular sheet of flexible material with two opposing edges folded in the same direction to form a flange along each edge. The sheet has sufficient rigidity so that the folded position is maintained and the deflector has an inverted U-shaped cross-section when mounted on the register with one of the flanges placed along each side. Magnetic material on the flanges holds the deflector in place on the register.

Abstract: A resonant microwave cavity 2 has a bi-metal end cap 4 or a tri-metal end cap 26. The end caps 4, 26 include irises 10, 28. The end caps are affixed to walls of the cavity 2 in the usual manner. As temperature varies, the end caps or irises expand into or out of the cavity to compensate for the increase or decrease in length of the cavity walls due to variations in temperature. The internal volume of the cavity is maintained substantially constant. When a bi-metal end cap is used, each layer of metal has a different coefficient of expansion. When a tri-metal end cap is used, the center layer has the highest of coefficient of thermal expansion.

Abstract: This invention relates to a closure cap, a container and to a closure cap and corresponding container in combination. As shown in FIG. 1 of the drawings, screw threads 14, 22 of a cap 2 and container 4 respectively each have sufficient alternate ridges 16, 27 and indentations 18, 28 over at least part of their length so that when the cap 2 and container 4 are in a closed position, at least one ridge on one screw thread can engage an indentation on the other screw thread. In another embodiment of the invention as shown in FIGS. 8 and 9, the screw thread of the cap is formed by a series of rounded projections 68 that are located adjacent to one another and overlap slightly with one another. The rounded projections 68 have a series of alternating rounded ridges and adjacent indentations.

Abstract: This invention relates to a device to improve the fuel efficiency of an internal combustion engine. The device is preferably located between a carburetor and a manifold body and has a supporting plate with an opening aligned with and corresponding to size to a barrel of the carburetor. A truncated cone surrounds the opening and tapers away from it. The supporting plate is mounted so that fuel entering the device flows through a large end of the cone first. Preferably, there is one opening and corresponding cone for each barrel of the carburetor.

Abstract: A propulsion drive system for a boat is provided where a propeller is centered within a tunnel. A converging channel, open towards the bottom, extends in front of the tunnel and a converging nozzle extends from the rear of the tunnel. The system is provided with apparatus for mounting the propeller in the center of the tunnel widthwise and a suitable rudder is mounted to the rear of the converging nozzle. The propulsion drive system can operate quietly with little vibration and no cavitation.

Abstract: A cleaning device is provided for use with a dip stick of the type normally found in internal combustion engines to measure the oil level. The device has a housing with an inner surface and a layer of absorbent material located thereon. The housing is shaped so that part of the dip stick can be laterally inserted within the housing in such a manner that the dip stick can be cleaned of excess fluid by pulling it longitudinally from the housing. The device has a magnet so that it can be mounted conveniently adjacent to the dip stick with which it will be used. Previously, various materials such as rags have been used to clean the dip stick while measuring a fluid level. This has not been satisfactory as a rag or suitable substitute was not readily available at all times and often the checking of the oil was over-looked.

Abstract: This invention relates to a locking device, having a U-shaped cross-section, for use with bi-fold doors. The device is designed to be slidably mounted on the top edge of one panel of a bi-fold door in the open position. When the door is closed, the device is slid over the top edge of both panels, and a bolt portion is inserted in the space between the two panels. To open the door, the locking portion is simply removed from said space and the locking device is moved to the top edge of just one of the panels.

Abstract: A security device for protecting premises having three separate variable time delays. A first time delays allows a legitimate user of the device to enter the premises and de-activate the device before the alarm sounds. The second time delay permits a legitimate user to exit from the premises without sounding the alarm. The third time delay ensures that the alarm will sound for a minimum period once the loop has been opened by an intruder. The device has an integrated circuit and each of the time delays are achieved through the use of a resistor in combination with a capacitor. The device also has a supervisory loop and the alarm becomes activated when the loop has been opened.