Abstract: A port system for allowing transfer of material between sterile environments in two walled enclosures includes film members attached to each of the enclosures and covering ports through the walls of the enclosures. The exterior surfaces of the film members are coated with adhesives of a type which will cause the film members to adhere when brought into contact with each other. To transfer material, the enclosures are brought together with film covered ports in alignment, and upon contact the adhesive covered surfaces cause the film members to adhere. The film members are constructed and arranged so that the portions covering the ports in the walls of the enclosures can be separated from the portions surrounding the ports. After adherence, the separable portions are removed, enabling transfer to occur through the now open ports.

Abstract: A stacked plate heat exchanger has flow passages for three different fluids formed between the plates. Passages for the third fluid are adjacent to both sides of each passage for the first fluid and each passage for the second fluid. In a preferred embodiment the passages are formed using only two plate surface configurations, and proper sealing of adjacent plates at the ports forming the inlet and outlet conduits for the three fluids is achieved by configuring the areas around the ports to define a system of annular planar platforms. For improved heat transfer when the exchanger is mounted in the horizontal position, baffles may be formed in the passages for the first and second fluids to control and direct the flow of those fluids.

Abstract: A method and apparatus for producing internally apertured pressure-sensitive labels adhered to a non-apertured liner begins with a label web adhered to a first liner. The internal aperture shapes are cut through the web only and not through the liner, forming aperture slugs separate from the web. The first liner is then removed from the web, and the separate aperture slugs adhere to and are removed with the liner. Next, the web, with apertures cut out, is adhered to a second liner and the label peripheries, in registry with the apertures, are cut through the web only and not through the liner, forming labels separate from the web. Finally, the web is removed from the second liner, leaving individually internally apertured labels on the non-apertured second liner.

Abstract: An intermittent motion rotary printing press in which the inking cylinder and pressure cylinder are mounted in spaced apart relation on a single common bracket assembly which pivots between an inking step position and a print step position. The range of bracket assembly pivot motion is adjustable to define a first stop point at which the inking cylinder transfers ink to a printing plate and a second stop point at which the pressure cylinder confines a web in printing contact with the printing plate. One or more pneumatic cylinders operate to shift the bracket assembly between first and second stop points and hold the assembly at the selected stop point for inking or printing operations respectively.

Abstract: An alarm system for use with vehicles having a part requiring a special security tool for attachment or removal includes a bracket for removably holding the tool in a storage position, a normally closed electric proximity switch which opens when the tool is in the storage position, and an electric alarm. The proximity switch and alarm are wired in a circuit which is energized only when the vehicle ignition switch is on. When the tool is away from its storage position, the proximity switch is closed, and the alarm alerts the driver of such fact when the vehicle ignition is turned on. A preferred system includes a permanent disc magnet mounted on the security tool, a magnetically actuated reed proximity switch, and a magnetic buzzer alarm, the permanent magnet and switch being mounted on the tool and bracket respectively in such locations that the magnet is within the actuation distance of the switch when the tool is in its storage position.

Abstract: A hand climber for use in climbing trees or similar vertical members includes a rigid cylindrical support bar and a flexible strap. One end of the strap is attached to the support bar at a fixed location on the strap and the other end of the strap is removably attachable to the support bar at any of a series of locations along the length of the strap. The strap is formed from extruded nylon 6 with yield tensile strength between about 10,000 and about 15,000 psi. An extruded rubber sleeve may optionally be slidably positioned on the strap for improved frictional contact with the vertical member being climbed. The hand climber may also optionally include a seat assembly hingedly mounted on the support bar.

Abstract: A valve for vacuum lifting systems has a flow passage with a load end, a vacuum end, orifices at each end, and an air impermeable float member within the passage. The valve is positioned in the air flow path between a vacuum lifting pad and a vacuum pump, with its vacuum end in the direction of the pump and its load end in the direction of the pad. Activation of the vacuum pump creates an initial air flow which causes the float member to move at a determinable rate from a rest position at the load end toward the vacuum end. If the load end of the valve is open, activation of the pump causes the float member to form a vacuum seal with the interior wall of the flow passage at the vacuum end orifice. If the lifting pad is in operative contact with a suitable load surface, the length of the valve flow passage is such that on activation of the pump a vacuum seal will be formed between the load and the lifting pad before the float member reaches the vacuum end orifice.

Abstract: A rotary cutting knife for paper cutting apparatus or the like includes a circular periphery carrier with a planar front face and a peripheral wall. Cylindrical bores in the peripheral wall receive cylindrical blade inserts. Each blade insert includes at its outer end an inclined planar blade face which intersects the cylindrical insert wall to form a cutting edge of elliptical contour. The insert receiving bores in the carrier are so oriented that inserts can be and are mounted therein with their blade faces all lying in a cutting plane parallel to the planar front face of the carrier and perpendicular to the axis of carrier rotation. Additionally, the bore orientation is such that the outer ends of the inserts lag their inner ends in the direction of carrier rotation. The assembly provides improvements in strength, blade wear life and precision of cut.

Abstract: A threaded hub and shaft connection includes a first hub threaded onto a first section of the shaft using a thread shape having a working face rise angle of from 7 to 25 degrees. Preferably a second hub is threaded onto a second section of the shaft inboard of the first hub, and the threads in the second hub and second shaft section also have a working face rise angle of from 7 to 25 degrees. Bolts or set screws engage both of their hubs in such manner as to exert axial force on at least the first hub tending to move the first hub relative to the shaft in the working face rise direction of the thread carrying the first hub.

Abstract: A harmonic bridge for use with guitars and other string instruments having fretted fingerboards includes a frame above the strings and transverse to the fingerboard in a position directly over a fret. A string contacting member is mounted in the frame above a string. Height adjustment, of the frame supports or/and of the string contacting member with respect to the frame, is provided so that the lower surface of the string contacting member can be caused to depress the string by an amount just sufficient to stop string vibration at the contact point when the string is plucked, but not far enough to cause the string to touch the fret or fingerboard.

Abstract: Apparatus for positioning an image receptor, such as X-ray film, within a patient's mouth in predetermined relation to an energy beam, such as an X-ray beam, generated externally of the patient's mouth, includes rigid structure supporting an image receptor and connecting it to the source of the energy beam, and a bite block removably attached to the rigid structure in a position such that the portion of the patient's maxilla and mandible gripping the bite block is removed from the portion being studied with the energy beam. The attachment system further provides for attachment of the bite block at any of a plurality of discrete sites relative to the image receptor. Bite registration material is preferably provided on the bite block surfaces to allow precise repositioning of the bite block in a series of successive exposures. The apparatus allows a plurality of target areas to be studied using one bite block position within the patient's mouth.