Abstract: An improved containment barrier or boom having a flotation means and a skirt section dependent therefrom. The boom may be wound around a reel for storage, and deployed from the reel as required. The flotation means comprises a flexible, longitudinally elongated tubular member, having a cavity extending throughout the elongated length thereof. A resilient, generally spring-like member having helical coil means is provided in the tubular member. The spring-like member extends substantially longitudinally throughout the length of the tubular member, and the helical coil means maintain the walls of the tubular member in a transversely expanded condition when the tubular member is deployed in the body of water. The spring-like member is resiliently deformable from the helical condition to a transversely flattened condition, when the tubular member is wound upon the reel for storage.

Abstract: A pressure detection arrangement embedded between the skin of a portion of the body and a means used to surround and/or immobilize that particular part of the body, such as a cast. The pressure detection arrangement is a bifurcated capsule having a reservoir cavity and an indicator cavity. A colored fluid is initially contained only within the reservoir cavity by either a frangible disc across the conjunction of the indicator cavity with the reservoir cavity or an extensible bladder within the reservoir cavity. The indicator cavity is transparent or translucent and protrudes through the case to regions external thereto.If there is swelling of the limb due to medical complications, the skin presses against the capsule and either breaks the fringible disc allowing the colored fluid to pass into the indicator cavity or forces the extensible bladder into the indicator cavity of the capsule. Both methods provide a visual indication in the indicator cavity of excessive pressure on the limb.

Abstract: An intrauterine device of the type having an external surface contacting the walls of the uterus after insertion therein, and said device having first walls defining a fluid-receiving cavity in at least a portion thereof. A concentrated fluid solution of a drug is present in the cavity and the drug is of the type providing an antifibrinolytic, an antifertility and antiproteolytic effect and is one or a mixture of more than one guanidine such as any aromatic monoguanidine, aromatic diguanidine, non-aromatic monoguanidine and non-aromatic diguanidine, and mixtures of one or more of the guanidines with one or more amidines.

Abstract: A mandrel arrangement for mounting a pipe machining tool for rotation relative to at least one end of a pipe bend to be machined. Locating plate means are detachably mountable on the mandrel for positioning the mandrel in the pipe bend in a predetermined location. Clamping means are provided on the mandrel for clamping the pipe means in the predetermined location. A mandrel shaft means is detachably mounted to the mandrel adjacent one or both of the ends thereof for receiving the pipe machining tool to machine the ends of the pipe bend. The locking means is cam actuated to frictionally clamp the mandrel in the pipe bend at the predetermined position and the structure of the cam operated locking means allows utilization of the pipe mandrel in comparatively small internal diameter pipe bends.

Abstract: An improved frictional interconnecting toy block arrangement having a body means with walls defining a body cavity. The interconnection of toy blocks with each other is achieved by a female coupler means extending through the cavity of the body means of the toy block and having an aperture adapted to receive a male coupler means. Male coupler means which extends outwardly from a wall of the toy block is insertable into the aperture of the female coupler means for frictional retention therein. The male coupler means are generally fabricated as part of the body means of the block. The body means of the block is fabricated of two separate body members coupled together along a median plane. Coupling means are provided on the two body members to retain the two body members together.

Abstract: A mandrel arrangement for mounting a pipe machining tool for rotation relative to at least one end of a pipe elbow or other bend to be machined. A mandrel frame is provided with first and second flange portions having outer surfaces located within planes which intersect to form a predetermined angle approximately equal to the angle of the pipe bend. The frame is adapted to be positioned within the pipe bend with an outer surface of the first flange portion adjacent a first end of the pipe bend and an outer surface of the second flange portion adjacent a second end of the pipe bend. A locking means connected to the mandrel frame is adjustable between a first radially retracted condition in which the frame is free to move relative to the pipe, and a second radially extended condition in which the frame exerts an outward force against the interior of the pipe to frictionally retain the frame from movement relative thereto.

Abstract: An intrauterine device of the type having an external surface contacting the walls of the uterus after insertion therein, and said device having first walls defining a fluid receiving cavity in at least a portion thereof. A concentrated fluid solution of a drug is present in the cavity and the drug is of the type providing an antifertility and antiproteolytic effect and is selected from the group consisting of aromatic monoamidines, aromatic diamidines and non-aromatic diamidines.

Abstract: A wave shaping electrical circuit for a hysteresis comparator having enhanced low frequency noise immunity. A passive element differentiating network is between the signal source and the input circuit of the comparator. The circuit includes components to provide a time constant in the passive element differentiating network such that the corner frequency is greater than the frequency of a low frequency noise signal which may be included as a component of the input signal.

Abstract: A storage arrangement for storing tape cassettes, eight track tape cartridges and the like, in which a case means is provided having walls defining a storage volume therebetween. A carousel comprising a pair of disc means is rotatably mounted in the storage volume and is supported by the side walls of the case means. The pair of disc means each have a plurality of cartridge holding means for retaining a plurality of the cartridges between the pair of disc means in a preselected array and in separate cartridge holding sections. The pair of disc means are maintained in a spaced apart relationship by a hub means and the disc means and hub means rotate relative to the case means about a horizontal axis. Brake means are provided intermediate the disc means and the case means to provide a predetermined frictional force therebetween.

Abstract: A golf club arrangement provided with means for "reading" the green. The shaft of the golf club is provided with at least a transparent portion extending in the longitudinal direction thereof. The transparent portion has an indicia such as an opaque line extending along the longitudinal direction and may be either on the surface or internal the transparent portion of the shaft. When the club is held vertically and the green observed through the transparent portion the natural lie of the grass can be more easily seen by reference to the angle made by the grass with the indicia.

Abstract: A detachable visor for a cap that is detachably mountable on the bill of the cap. The visor has a face shield pivotally interconnected by hinge means to a pair of spaced apart clip means. The clip means detachably mount on the bill of the cap. In the first mounting condition, a face shield depends downwardly from the bill of the cap to guard the face of the wearer of the cap and is pivotally movable on the hinge means to a clear position where the face shield extends upwardly from the upper surface of the bill of the cap. The visor is also mountable in a second mounting condition wherein the face shield extends upwardly from the bill of the cap in a different orientation than in the clear position. Restraining means may be provided for restraining the face shield with respect to the cap in any of the desired positions thereof.

Abstract: A golf ball and putting club each of which includes alignment lines to facilitate putting the ball. The lines on the golf ball are located at a right angle to each other and are equatorial markings. The lines on the upper surface of the putter head includes a first line perpendicular to the putting face, and a second line perpendicular to and centered about the first line. The length of the second line on the club corresponds to the diameter of the golf ball. In use, the first line on the club is aligned in the same plane as one equatorial marking on the ball, and the second line on the club head is aligned parallel to the second equatorial marking on the ball.

Abstract: A pipe bevelling tool arrangement for providing a predetermined bevel on the end surface of a pipe. The arrangement described herein provides an orbital cam follower bevelling tool that provides a constant bevel leaving a radially extending land on the end surface of a pipe having a predetermined minimal radial extent regardless of the "out-of-round" condition of the pipe. A cam is mounted to engage the exterior surface of the pipe and a bevelling tool is rigidly coupled to the cam and the cam and bevelling tool orbit around the nominal center line of the pipe. The cam and the pipe bevelling tool are resiliently mounted on a rigid arm rotating about the nominal center line of the pipe and the pipe bevelling tool follows movement of the cam in a radial direction. The pipe bevelling tool is set in a preselected position with respect to the cam to provide the desired bevel portion and extent of the radially extending portion on the end surface of the pipe.

Abstract: A package opening arrangement comprised of a body member having a lower portion and an upper portion spaced a predetermined distance therefrom and an end portion coupling first ends of the upper portion and the lower portion together. The upper portion overlies the lower portion and a section thereof is substantially coextensive with the lower portion. The second end of the upper portion is provided with a package cutting means which may be a point. Limit means are provided on the lower portion for limiting the insertion of the second end of the upper portion into the package to be opened.

Abstract: A communication system comprising an emitter and a receiver (detector) utilizing modulated beams of neutrino and antineutrino waves as information carriers between the emitter and the receiver. Generation of modulated neutrino and antineutrino beams in the emitter is achieved by a maser-like medium, while detection and demodulation of the neutrino and antineutrino beams is accomplished by a second maser-like medium which registers the fluence (or flux) of modulated neutrinos and antineutrinos passing therethrough by means of resonant stimulated deexcitation of excited states. In addition to the information transmission utilization, the neutrino emitter and receiver (detector) system may also be employed to gather information by the probing of internal earth structures.

Abstract: Feet support arrangement for detachable mounting on the front lip of a bowl of a lavatory to support the feet of a person sitting upon the lavatory. The feet support generally has a vertically disposed body member with a hook means at the upper edge thereof. The hook means extends over the front portion of the rim of the bowl of the lavatory and has a dependent flange extending downwardly therefrom on the inside of the bowl with the body means extending downwardly on the outside of the bowl. The flange member functions as a splash guard to prevent the passage of liquid between the rim of the bowl and the seat. An upper surface of the hook means is provided with a sealing means to engage the lower surface of the seat when the seat is in the down position. A pair of oppositely disposed feet support means extend outwardly in opposite directions from side edges of the body means.

Abstract: A tape head control arrangement for a telephone answering machine. The outgoing message is recorded on the first track of a recirculating multi-track tape. The record-playback tape head is movable over the plurality of available tracks on the tape. Movement of the tape head is controlled by a cam connected to a rachet which is rotated by a solenoid in discrete steps, each step corresponding to movement of the tape head to the next available track. When no incoming calls have been received the tape head is positioned at track two of the tape in a standby mode of operation. When the first incoming call is received the solenoid is automatically actuated and a control arrangement moves the tape head to the first track to play the outgoing message. At the conclusion of the outgoing message corresponding to a complete circuit of the tape the solenoid is deactivated and the cam allows movement of the tape head back to the second track for the record mode of operation.

Abstract: An arrangement for detecting low concentrations of molecular gases. A gaseous sample containing molecules of the gas to be detected is simultaneously subjected to two photon beams which, for example, may be generated by lasers. The wave length of the first photon beam corresponds to the energy separation between the ground electronic state and an excited electronic state of the molecular gas and the second photon beam contains energy in a wave length corresponding to the energy separation between the excited electronic state and the ionization limit of the molecule. Detection of the amount of ionization achieved is a measure of the concentration of the molecular gas in the sample. Simultaneous identification of the particular wave lengths causing the transition of the molecules from the ground energy state to the excited state provides an additional parameter identifying the molecules.