Abstract: A device is provided for detection of presence of air within a fluid system containing a dielectric fluid, such as oil. The device comprises a capacitor having a tubular capacitor plate which is connected in series with the fluid system. An elongated cylindrical capacitor plate is coaxially secured within the tube by disc shaped spacers constructed of an electrical insulating material. Both the first and second contacts are connected to an oscillator having a frequency dependent upon the capacitance of the capacitor. The capacitance of the capacitor varies in an amount proportional to the amount of air contained within the dielectric fluid to thereby vary the frequency of the oscillator. The frequency output from the oscillator is connected to an indicator circuit to provide an indication of the oscillator frequency and thus of the amount of air within the dielectric fluid.

Abstract: A radiographic examination system for performing X-ray examination of large items such as International container units is formed as an installation comprising housings for one or a plurality of X-ray sources such as linear accelerators which in operation transmit a continuous beam of radiation across a conveyor along which the units to be inspected are displaced either continuously or incrementally. The radiation transmitted through a container is detected in a folded sensor screen or array extending on one side and over the position occupied by a container under inspection. The sensor screen or array produces optical signals which are converted into electrical signals by a photo-diode array or a camera system such as a television camera, and transmitted as pulse coded electrical signals by a coding transfer unit to display screens and signal recording equipment where an image of the transmitted information can be displayed and/or recorded for further use.

Abstract: An implanter for implanting treatment pellets beneath the skin of animals comprises a hollow needle (52) through which a drive pin (26) is displaceable to drive a pellet (64) through the needle and in use to a controlled depth below the skin. A forked abutment (54) straddles the needle, being spring urged into a normal location near the rear end of the needle. The abutment (54) is carried by a rearwardly extending rod (56) having a drive member (62) engagable by a thrust member (63) on the drive pin during part of the forward movement of the latter. In use, when the abutment member is against the animal being treated, the final part of the forward movement of the drive pin effects a retraction of the needle, leaving the pellet implanted at the correct depth (FIGS. 4 to 6).

Abstract: A portable bicycle training apparatus comprises an integrated but collapsible structure weighing about 7 Kg. When collapsed, the structure can be placed in an elongated bag which is longer than it is thick. From the collapsed condition pillars which support a bicycle, at one end of the rear axle bracket of the bicycle, can be extended from a base member. The pillars also serve to support a remote control for a brake, in a position convenient for the user during training.

Abstract: An apparatus for resizing rifle cartridge cases comprising the die fixedly positioned with respect to a frame and a ram operated by a lever mechanism adapted to raise a case into a resizing cavity within the die. A punch is loosely supported in the die and includes an extractor pin at one end for removing the primer from the head of the rifle case. The die is covered by a head cap including a threaded stem adapted to abut against the punch. The head cap includes a lateral flange adapted to be engaged by levers for forcing the punch against the head of the case when the case is to be removed from the die. The punch also includes an expansion sleeve for resizing the neck of the cartridge as the case is extracted from the die and an expanded end of the punch loosely suspends the punch within the die when the case has been removed.

Abstract: The specification discloses an electronic dynamic balance leak testing system utilizing a "live zero", wherein a source of test medium at a predetermined desired pressure or vacuum is connected to a part to be tested, and after the part is filled with the test medium, and an interval is provided for the system to stabilize the affects due to wave front oscillations, the test part is momentarily isolated from said test media and a microcomputer system is utilized, both to cause said isolation, and to measure the differential pressure existing at two points during the test. In a modification of our system which can dynamically project leak and accept or reject parts much sooner because of this projection feature, the rate of change of the differential pressure transducer is examined and is compared to a curve which is characteristic of the rate of change of a volume which is experiencing a predominately leak based change of pressure.

Abstract: A document copier for producing photocopies from a book or equivalent bound volume, wherein a scanner housing (16) has a wedge-shaped surface with a window (18) in one face, and is mounted above a V-shaped book support (20) with provision for vertical relative movement therebetween so that a page of an open book on the book support can be located against the window. The scanner within the housing is movable to relay strip images via an optical system including reflector devices and a lens onto a photo-sensitive surface moved in synchrony with the scanner, the optical path length being kept constant (FIG. 1).

Abstract: A device as described for indicating the state of focus of an image of a document which is converted into a video signal by sequentially inspecting the incident light level at points within the image and generating an electrical signal having a parameter which varies with the light level.

Abstract: The present invention provides a pedestal seat for a vehicle, such as a car, having a base comprising a base shell and a pair of elongated rails secured to the bottom of the base shell so that the rails are spaced apart and parallel to each other. These rails are, in turn, longitudinally slidably mounted to tracks secured to the vehicle floor. A pair of hinges are directly secured to the rear ends of the rails while a back plate is pivotally mounted to the hinges. A back shell is attached to the back plate and both the base shell and back shell are subsequently covered by seat and back cushions, respectively, so that the hinges are hidden from view. Since the rails, hinges and back plate form the support structure for the seat, the base shell and back shell can be easily interchanged to facilitate styling changes. In addition, two or more bladders are variably inflatable to provide upper back and head support.

Abstract: An improved degree wheel device includes a degree wheel which is adjustably rotatable relative to the crankshaft on which it is carried. The wheel can be easily adjusted so that a zero degree reading corresponds to top dead center of piston travel. Much of the calculation necessary to determine cam phasing, cam lobe centerline, valve overlap, and the like is thereby eliminated. The degree wheel preferably includes counterclockwise 0.degree. to 360.degree. indicia for a direct and calculation-free determination of the duration of tappet lift.

Abstract: The present invention provides a method for controlling the carbon content of dewaxed carbide preforms in a carbon containing furnace. The method includes the steps of placing the preforms in a carbon containing furnace and then heating the furnace to a predetermined temperature range between 800 and 1100 degrees Centigrade. At that temperature, a mixture of methane and hydrogen is introduced into the furnace chamber such that the amount of methane is between 10 and 90 percent of the amount of methane present at equilibrium for the reaction C.sub.solid +2H.sub.2 .revreaction.CH.sub.4. The furnace chamber is maintained at its temperature for a first time period sufficient for the chemical reaction XC+2H2.revreaction.X+CH.sub.4 (where X is selected from the group of W, Ti, Ta, Hf and No) substantially reaches equilibrium but shorter than the a second time period in which the reaction C.sub.solid +2H2.revreaction.CH.sub.

Abstract: The present invention provides a glass scriber assembly having a base, a support attached to the base and wherein the support includes an upper surface adapted to support a pane of glass. An elongated arm is pivotally mounted to the base so that one end of the arm is positioned over the support surface. A conventional glass scriber is detachably secured to the end of the arm so that the scriber engages a pane of glass on the support surface. Simultaneously, a compression spring in between the other end of the arm and the base urges the scriber against the glass pane. A roller is rotatably mounted to the support and abuts against the bottom of the glass pane on the support surface so that, upon manually rotating the roller, the roller moves the glass pane under the glass scriber.

Abstract: A device for transporting a plurality of similarly sized beverage cans includes a transparent, flexible pouch of fixed dimensions, and a rigid housing in which the pouch is slidably received. The front and rear walls of the pouch and housing are spaced apart a distance about equal to the length of the cans, so that when the cans are inserted with their ends adjacent the front and rear walls, they will remain in unidirectional alignment upon removal of the pouch from the housing. The pouch includes a flap for keeping the cans in the pouch, and adhesive tape for securing the flap to the front of the pouch. The tape passes through a facial opening in the housing in order to seal the pouch while it is in the housing. The pouch is preferably transparent so that the number of cans can be accurately counted, and so that it can be visually confirmed that all of the cans are of the type returnable for a refund of any deposit.

Abstract: The present invention provides a spectacle lens blank for an aphakic eye and which is adapted to be worn in front of the eye by patients following extra capsular surgery. The lens blank includes a lens body having a posterior surface and an aspherical anterior surface in which the lens power decreases from the center and towards the edges of the lens blank. The lens blank also includes a flat top bifocal lens segment having an optical center on the same vertical center line as the lens body but in which the flat top is spaced downwardly from the optical center of the lens body by one to four millimeters and preferably by substantially 3 millimeters. In use, the lens blank can be trimmed to fit eyeglass frames to produce either a left lens or right lens.