Abstract: The valve assembly for the control of flow of liquid from a source of liquid at high pressure to a place of use has at least one restrictive orifice adjacent a movable valve member and valve seat to provide pressure drops in series in the liquid each of which pressure drops is of a magnitude sufficient to maintain the liquid pressure above the vapor pressure of the liquid at the inlet of the valve assembly so that cavitation does not occur. The restrictive orifice varying in flow area automatically in direct proportion to the variable flow area between said movable valve member and the valve seat.

Abstract: A movable support for indexing a recording head across the face of a recording tape in a deck in precision steps free of backlash and angular movement out of the normal plane of the tape and in which a pair of parallel, matched leaf springs carrying the recording head by their outer ends are anchored at their inner ends to a block adjustably secured to the frame of the tape deck such that the effective length of at least one of the leaf springs can be changed.

Abstract: A fire safe, environmentally protective cigarette holder for fully enveloping a lit cigarette and in which an internal power source maintains a flow of air to the lit portion and drives the exhaust smoke through a filter before it is vented to the atmosphere, thus filtering products of combustion which are not drawn in by the smoker. Additional filtering means which can include the cigarette itself can be utilized to filter the drawn smoke.

Abstract: An antenna comprising orthogonal arrays of resistive thermocouple dipoles interconnected by transversely extending conductive elements of discrete length. The components are designed to create an additional response by a traveling wave effect on the dipoles along the Poynting vector to offset the fall-off in dipole sensitivity experienced as frequency rises.

Abstract: Microwave dielectric resonator apparatus which, for example, may be a microwave oscillator frequency stabilized by a dielectric resonator or may be a microwave filter whose critical frequency is determined by a dielectric resonator, has the dielectric resonator environmentally protected in a hermetic chamber. As the hermetic integrity of the chamber would be destroyed by having a tuning slug therein at the end of a screw threaded into a tapped hole through a chamber wall for rotation by a screwdriver outside the chamber, the tuning slug is instead located within a non-hermetic chamber at the end of a screw threaded into a tapped hole through a wall of the non-hermetic chamber serving also as an outer wall of a housing enclosing both chambers. The chambers have an interface which is transparent to microwave fields and proximate the dielectric resonator and tuning slug.

Abstract: A hyperbaric gas treatment device applicable to any part of the body for therapeutic topical treating of a skin lesion at the body part. A resilient pad is provided with a central opening therethrough in its thickness direction whose periphery at one major pad surface registers with the periphery of a hole provided through gas-impervious transparent flexible sheet material which encases the pad. The pad casing is hermetically penetrated by a gas inlet fitting arranged to discharge treating gas into the central opening either directly, by extending laterally through the pad to pierce the wall of the opening, or indirectly, by extending between the casing and a peripheral surface portion of the pad so as to communicate with the opening by way of paths between the casing and the pad periphery which link with paths between the casing and at least one of the major pad surfaces.

Abstract: An electromagnetic field detector adapted to display potential hazard to humans and other animals arising from illuminating electromagnetic energy over the frequency range determined to be hazardous by the American National Standards Institute; the detector being designed with various sensing means to create a sensitivity vs. frequency response that is the inverse of the A.N.S.I. protection guides.

Abstract: A bridge circuit for use with high gain high impedance direct-current amplifiers, when the input circuitry includes components subject to pyroelectric effects. The bridge includes temperature responsive elements connected to an adjustable direct-current voltage supply and produces a control voltage that compensates for changes in the zero offset of the input, due to such pyroelectric voltages.

Abstract: Apparatus which has a permanent magnet rotor magnetically coupled to a control field permanent magnet, the magnets being rotatable about respective rotational axes of support that are perpendicular to one another. The magnetic axis of each magnet is perpendicular to the rotational axis of that magnet, so that the rotor magnet changes in attitude about its rotational axis in response to a change in the magnitude and sense of the control field component perpendicular to the rotational axis of the rotor magnet. Such a change of the perpendicular control field component is caused by turning the control field magnet about its rotational axis through motor-driven reduction gearing including a worm and gear combination which holds the rotor magnet at its adjusted attitude after the motor is deenergized.

Abstract: A dental method and apparatus for swiftly performing gingival retraction and conditioning in which a mass of moldable coherent plastic, preferably thixotropic, is lightly pressure molded both into and around the gingival trough of a prepared tooth to apply substantially balanced forces around the gingival flap which maintain the gingival trough without distortion. The moldable mass is rendered hydrosorbent at least on its surface by intimately bonded absorbent fiber, enabling it to absorb all the liquids and debris which would normally preclude the material from flowing into the trough. To effect a slight enlargement of the trough and to prevent prolapse in the case of very narrow troughs a preliminary bead of flowable thixotropic material can be injected into the trough to transmit light lateral outward pressure on the flap when pressed into the trough by the moldable absorbent mass.

Abstract: An expendable adaptor for quick coupling flexible hoses to a variety of devices such as oxygen breathing equipment and including an enlarged deformable head portion having at least a pair of concentric sleeves the inner of which is axially recessed so that its forward face engages an end edge of a complementary coupling fitting in sealing relationship while the outer sleeve surrounds the fitting in a secondary sealing as well as anchoring relationship.

Abstract: This portable microwave radiation monitor utilizes an antenna formed in a dual Archimedean spiral. The power density of the electric field is indicated on a meter coupled to diode means connected across the inner terminals of the antenna by inductance means selected to resonate with the variable capacitance of the diode, substantially at the frequency of the field being monitored.

Abstract: This portable microwave radiation monitor utilizes an antenna formed in a dual Archimedean spiral. The ellipse ratio of the spiral is minimized by selective placement of resistive means over a portion of the antenna and the power density of the electric field is indicated on a meter connected via diode means to the inner terminals of the antenna.

Abstract: There is disclosed a lifting feature for releasably gripping from within the reel-less cores about which coils of wire in bulk are wound, the fixture including a central lifting member from which pivotally attached lifting bars radiate to engage the core in an upwardly inclined attitude so that the weight of the load causes the bars to press into the walls of the core to establish a solid coupling.

Abstract: A continuous throughput endless loop reactor for polymerizing monomers formed by a material conveying conduit connected in an endless loop having spaced apart raw material inlet means and polymer output means in which the output volume can be controlled by a pressure sensitive element and in which a coolant line passes internally through the conduit preferably becoming near the output means. Reaction speed as well as thermal control is augmented by helical vanes of alternately pitch sections joining the coolant line and the interior walls of the conduit.

Abstract: A cylinder lock wherein both cylinder and plug are radially bored to receive pin-pairs of specific design. A pin freeze element is positioned for movement within the plug in a direction substantially orthogonal to the axis of the plug bores. The interface between the pin freeze element and the pins includes incremental notches of matching configuration such that when the plug is turned, the pin freeze element engages the pins locking them from reciprocal movement. The mating surfaces of the pin freeze element and pins must be in registration for the plug to turn at all and they must be in perfect registration and properly aligned for the lock to open.