Abstract: A hermetically sealed package is provided that is suitable for dispensing a material into a body cavity. The package includes a container having a dispensing nozzle surrounded by a seamless sleeve that prevents contact between the container's dispensing orifice and body tissue without impeding material flow from the container. Preferably the nozzle is provided with a twist-off closure constituted by a cap joined to the dispensing nozzle by a frangible web that surrounds the dispensing orifice.

Abstract: A test fixture for testing a specimen under compressive or tensile load under close, reproducible tolerances and conditions. Confronting platens having surfaces which act against the specimen are provided with an in-line wedge assembly which drives the platens to load the specimen. The platens and wedge assembly are positioned between the top and base of a frame assembly. The top and base are connected by side plate members which are tensioned when the wedge assembly is operated to load the specimen via the platens. The test fixture also has a load cell in line with the platens and which is acted against by the platens to continuously sense the load applied to the specimen.

Abstract: Pigmented toner particles are provided wherein, because of treatment with a surface modifier, an initially hydrophilic, sub-micron sized pigment is made hydrophobic. Toner particles are produced wherein the pigment is dispersed internally leaving surfaces substantially free from pigment.

Abstract: A water craft which comprises a motor propelled floating portion which has two spaced-apart hulls which are connected by an elevated bridge. The water craft further comprises a submersible cabin which is arranged to be raised and lowered with respect to the floating portion of the craft, the cabin providing accommodation for underwater observers. The cabin is connected to each hull by fore and aft pivotable arms and is movable between a first position above the waterline of the floating portion of the craft to a second, submerged, position. The cabin is accessed from the floating portion of the craft when the cabin is in the first position and, in order to provide for fail-safe operation, the cabin is ballasted for positive buoyancy when it is submerged. The cabin incorporates a tower which is dimensioned to project above the waterline at all times, including when the cabin is sumberged to the maximum extent permitted by the pivotable arms.

Abstract: A lock for a helmet is disclosed consisting of a lock which is mounted integrally with the liner of the helmet along an edge of the helmet, with the key access and shackle facing outwardly. The shackle is a three-position shackle, capable of being locked in one position such that the shackle extends beyond the periphery of the helmet in order that the helmet may be locked around a suitable object and is lockable in another position such that the shackle is flush with the top face of the body of the lock. An open position of the shackle allows the shackle to swing freely in order that it may engage such a suitable object and the shackle be subsequently locked into the first locked position.

Abstract: An oxidation ditch for biological aerobic treatment of wastewater having a velocity control system to establish an increased and more uniform cross-sectional velocity throughout the flow channel. The system includes a turning baffle member positioned in at least one of the end sections of the flow channel. The turning baffle member is provided with an end portion that has an upper edge that extends under a brush aerator located across an elongated section of the flow channel. The upper edge of the other portion of the turning baffle member extends above the surface of the flowing mixed liquor stream. The flow of the mixed liquor downstream of the brush aerator is unrestricted by flow baffles located in the flow channel.

Abstract: A mechanically expandable esophageal catheter has an elongated flexible body which carries at a distal end thereof one or more electrically conducting members. The conducting members are moveable laterally with respect to the body portion of the catheter by means of a mechanical structure contained therein. The degree and extent of mechanical movement can be controlled by a stylet from a proximal end of the catheter.

Abstract: The invention relates to a one-piece plastic cap, the lower part of which, which can be attached to a container opening, is provided with a top wall in which a passage opening is provided, the lower side of which is joined via a dip tube to the container. The top wall is, furthermore, provided with a hole diaphragm which, in the closed position of the upper part, is closed by a sealing spike protruding from its lower side and, in the open position of the upper part, interacts with a valve spike projecting from its lower side which is dimensioned shorter relative to the sealing spike so that, when pressure is exerted on the container, the ventilation valve is closed. A pre-tensioning device of the upper part interacts with the lower part so that, in the closed position of the upper part, a discharge channel in the upper part is pressed with elastic pre-tension sealingly against the top wall and, in the open position of the upper part, sealingly against the edge of the passage opening.

Abstract: A telecommunications signalling interface for computer systems is presented. Control and information signals from the telephone switch are received, decoded, and converted to a standard interface format for retransmission to the computer. Control and information signals from the computer are received and converted to a standard format for transmission to the telephone switch. The power supply for the device is derived from the telephone network and the computer interface.

Abstract: A dispersing closure is provided for an opening in an squeeze-type container and includes a body defining a dispensing passage for communicating between the container interior and the container exterior through a container opening. A flexible, self-sealing valve is provided with a peripheral flange, and the valve is mounted in the body for opening in response to increased container pressure. The body is of unitary construction and is molded from thermoplastic material with an upstanding peripheral wall that is subsequently deformed over the valve flange to retain the valve in the body. A preferred process for making the closure includes the steps of molding a unitary closure body with a seat for the valve flange surrounded by a peripheral wall, disposing the valve flange on the seat, and then deforming an upper portion of the wall into a generally annular configuration extending radially inwardly to overlie the seat and clamp the valve flange between the seat and the deformed portion of the wall.

Abstract: Antigens, immunogens, inocula, antibodies, and particularly diagnostic methods and systems relating to Epstein-Barr virus nuclear antigen (EBNA) are disclosed. The diagnostic methods and systems utilize a synthetic, random copolymer polypeptide containing about 8 to about 40 amino acid residues that includes the overlapping five and six amino acid residue sequences(i) --Gly--R.sup.1 --Gly--R.sup.2 --Gly--wherein R.sup.1 and R.sup.2 are amino acid residues selected from Ala, Asn, Arg, Gly, Leu, Pro, Ser, and Thr with the provision that R.sup.1 and R.sup.2 are not both Gly; and(ii) --Gly--Ala--Gly--Gly--Ala--Gly--.The polypeptide contains at least 50 mole percent Gly residues. The diagnostic method and system are particularly useful for assaying for the stage of mononucleois disease, and the presence of nasopharynegeal carcinoma.

Abstract: An improved height control system for adjusting the elevation of a harvesting unit supportd for vertical movement on a cotton harvester. The height control system includes a signal receiving apparatus movable within a range of movement and arranged in combination with a lift mechanism for adjusting the elevation of the harvesting unit. A signal transmitting mechanism carried on the harvesting unit for ground engagement is connected to the signal receiving apparatus for causing the lift mechanism to effect harvesting unit elevation correlated with vertical movement of the signal transmitting mechanism relative to the harvesting unit. A linkage assembly interconnects the signal receiving apparatus and signal transmitting mechanism.

Abstract: A convertible child-resistant closure assembly is described herein. It includes a closure and shell. The shell mounts a latching key and the closure provides a complementary latch. An alignment structure provides for aligning the latch and key for movement of the latching key from a mode in which the key is inactive to a mode in which it engages the latch to inactive the child-resistant function of the closure. In that position the shell and closure are corotatable in both clockwise and counterclockwise directions. Spring fingers may be provided to elevate the shell relative to the closure to provide an additional child-resistant function. The latching key may be hingedly or slideably secured to the shell.

Abstract: A miter undercutter bit is provided which is functional to make a 45 degree angled miter. The assembly includes a rotatable shaft having a cutter mounted thereon. The cutter comprises a pair of 45 degree angle arms which upon rotation thereof make the miter. A bearing having a diameter substantially equal to that of the base of the cutter is utilized.

Abstract: A method and apparatus for cleaning filter elements that are vertically positioned within a filter vessel that has a tube sheet dividing the filter vessel into a lower filter compartment and an upper plenum compartment. A fixed volume of backwash liquid is rapidly directed from the plenum compartment above the tube sheet through the filter elements into the filter compartment that has been drained of liquid. The rapid movement of the backwash liquid is a result of a pressure differential between the plenum compartment and the filter compartment. The volume of backwash liquid is maintained above the tube sheet by a pressurized condition in the filter compartment, which volume may be changed by adjusting the pressure in the filter compartment.

Abstract: A method of using a pipette comprising a flexible tube portion having an integrally formed squeezable bulb portion, a spring clip arranged between the ends of the pipette to inhibit air from being aspirated into the pipette and a filter at the inlet end of the pipette.

Abstract: A cellular communication system booster has plural narrowband and wideband channels each having down mixers, local oscillators, IF filters, and amplifiers for amplifying communication signals. On a narrowband channel preferably not in use, and preferably in a time-multiplexed manner, a reference signal of known signal strength is substituted at the output amplifier in lieu of a normal communications signal. When this amplified reference signal is broadcast at the output antenna a portion of the signal is feed back to the input antenna due to imperfect isolation between the antennas. This feedback signal is measured by a Radio Signal Strength Indicator (RSSI) circuit at the point of its receipt into the IF filter of the narrowband channel. The measured signal strength serves as a measurement of signal isolation/feedback between the antennas.

Abstract: The invention concerns a method for producing hydrogen peroxide using a process based on anthraquinone derivatives. According to the invention the solvent system of the working solution in said process contains carbamate having a general formula ##STR1## where groups R.sup.1 and R.sup.2, which can be the same or different ones, are a hydrogen atom or a hydrocarbon group and R.sup.3 is a hydrocarbon group,whereby the groups R.sup.1, R.sup.2 and R.sup.3 can optionally be part of a cyclic structure and/or substituted by groups which are inert to the process.

Abstract: A protractor comprising a generally flat protractor disc having a straight edge portion and a semi-circular portion. An arm member is pivotally secured at one end to a central section of the straight edge portion and overlies the front surface of the semi-circular portion at the other end. The arm member has a straight drawing edge that aligns with angle indicia on the semi-circular portion. An arcuate member extends outwardly from the front surface of the semi-circular portion. The arm member has recess in a rear surface thereof that receives the arcuate member therein. The relationship between the depth of the recess and the distance that the arcuate member extends from the front surface of the semi-circular portion is such that the arm member is spaced from the indicia on the front surface.

Abstract: A manually operable, liquid aspirating pipette, and associated dispensing apparatus, are disclosed. The pipette includes a manually operable aspirator arrangement which permits collection and aspiration of a liquid sample. A pull-back mechanism is provided to facilitate convenient introduction of air into the pipette subsequent to aspiration of the liquid sample. Notably, the pipette includes a secondary actuating member which permits operation of the pipette by the associated dispensing apparatus. Thus, after aspiration of a liquid sample, the pipette may be positioned in the dispensing apparatus, with the apparatus operated to provide controlled, metered dispensing of the sample in the desired manner.