Abstract: Heat-sealable sheet material for use in the fabrication of lapped-seam membranes. In a presently preferred construction, linear low density polyethylene film is adhered to one lateral border of cured polymerized EPDM composition; preferably the adhesive is protected with a removable liner, e.g., a polyester film until lapped-seam splicing is to be carried out. A transfer tape based on thermoplastic heat-sealable adhesive carried by a strippable liner also constitute part of the invention. The transfer tape is advantageously applied to a sheet of uncured EPDM compound and the resultant assembly subjected to heat and pressure to cure the compound and bond the heat-sealable adhesive firmly thereto.

Abstract: A magnetic medium consisting essentially of a cured compound derived from a low-molecular weight, phosphorylated, polyoxyalkyl polyol and an organic isocyanate compound. The binder may also include a vinyl polymer and/or a polyoxyalkyl polyol.

Abstract: A skin adhesive coated sheet material is provided which is coated with a polymer that exhibits an enhanced level of initial adhesion when applied to skin but resists objectionable adhesion build up over time. The skin adhesives are comprised of a macromer reinforced acrylate copolymer which has a creep compliance value at least about 1.2.times.10.sup.-5 cm.sup.2 /dyne. A stable chemical complex of iodine, iodide and a pressure-sensitive adhesive is also provided wherein the adhesive has a creep compliance value of at least about 1.0.times.10.sup.-5 cm.sup.2 /dyne measured when the adhesive composition is substantially free of iodine.

Abstract: A drive assembly for reels of microfilm provided in a cartridge and placed in a cartridge receiving channel in a direction normal to the axis of the reel supporting the coil of microfilm and usuable with cartridges having differently designed reels comprises a main drive shaft which can be coupled direct to the reel with a backup wheel or coupled to a drive head that is connected in driving engagement with the reel. Automatic locking means and spring biased drive parts afford a drive that is adaptable to the cartridge reel. Releasable drive means withdraw the drive shaft and drive head from the cartridge receiving channel.

Abstract: A shaped article comprises a continuous alumina-silica first phase, an in-situ generated discontinuous carbon second phase, and optionally a discontinuous silicon carbide third phase, said article being stable to an oxidative atmosphere when heated to 1300.degree. C. for at least 30 minutes.

Abstract: Devices for and method of generating coherent second harmonic light radiation. The devices comprise a laser source of coherent light radiation at a fixed fundamental frequency, a Schiff base compound, means for directing the output radiation of the laser onto the Schiff base compound, and output means for utilizing the second harmonic frequency. Preferably, one moiety of the Schiff base compound has a hyperpolarizable group and the other moiety of the Schiff base compound has a configuration so that the compound crystallizes in a non-centrosymmetric configuration.

Abstract: A light-tight, self-contained canister and light sealing, anti-blooming tab, of generally rectangular shape, for preventing a roll of core wound photosensitive media, containable within the canister and used in a microfiche or microfilm reader-printer, from being damaged or exposed to actinic light during shipping and storage. The canister includes an open-ended, opaque tubular sleeve having an exit slot, and the sleeve is closed at both ends by opaque end caps fastened thereto. The tab includes an insertable portion joined along a fold line to an extendable portion. The insertable portion may be inserted into the exit slot and engageably wedged between the roll of core wound photosensitive media and the sleeve to prevent undesired rotation. In addition, the extendable portion of the tab is folded at the fold line along the exit slot.

Abstract: An article is provided having a plurality of straight spaced parallel extruded elements separated by a regularly undulated extruded element having an aspect ratio of at least about two, with undulations having opposed apexes on either side thereof, with apexes on one side of the undulated element being bonded to one of the parallel extruded elements and the apexes on the other side of the undulated element being bonded to the other of said parallel extruded elements.

Abstract: A recording member comprising a conductive substrate having a dielectric coating thereon. The recording member is particularly useful with the electrographic recording process and apparatus described in U.S. Pat. No. 3,816,840. The dielectric coating exhibits charge dissipation properties that will allow removal and replacement of toner powder within one operating cycle of the aformentioned recording process, and the surface of the coating is sufficiently durable to allow the recording member to be used repeatedly, e.g., at least about 20,000 cycles, before the conductive substrate needs to be recoated.

Abstract: Method for repairing damaged metal surfaces comprising the steps of:(1) exposing bare metal surface in the vicinity surrounding the damaged area to be repaired,(2) cleaning the bare metal surface,(3) providing a thin, corrosion-resistant patch consisting of a covering member having a face side, back side, and edge side bounded by said face side and said back side, and having a layer of adhesive, preferably a pressure-sensitive adhesive, and coated on said back side, and(4) applying the corrosion-resistant patch to the damaged surface, said patch adhering to the bare metal surface adjoining and surrounding the patch, and(5) applying a sufficient amount of flexible putty to the bare metal surface adjoining and surrounding the patch so that a smooth transition running from the face side of said covering member to the metal surface is obtained.This method does not require the use of two-component body fillers, thus simplifying sheet metal repair for the novice.

Abstract: A sleeve for enclosing a cable connection, comprising a bendable sheet adapted to be laid around the cable connection. The sheet has a series of equally spaced longitudinal cuts in at least one marginal portion to be arranged transversely of the longitudinal direction of the cable connection. The cuts subdivide the marginal portion into tongues so that as the sheet is laid around the cable connection, the tongues can be laid with a partial overlap tapering down onto the cable sheath at the end of the cable connection. The longitudinal cuts are formed by cutting lines which extend in a direction deivating from the longitudinal direction so that the free ends of the tongues are offset with respect to the base portions of the tongues in a direction transversely of the longitudinal direction.

Abstract: An improvement to an implantable amplitude modulated frequency receiver wherein a resistor in the demodulator portion of a prior art receiver, which provides a discharge path for a capacitor, is replaced with an active circuit portion that includes a semiconductor device that provides the discharge path wherein the conductivity level of the semiconductor device is inversely related to the level of conduction of a rectifier to which the received amplitude modulated signal is applied. The active circuit portion improves the efficiency of the receiver in that less power is lost than in the case of the resistor the active circuit portion replaces.

Abstract: A heat-recoverable closure with a crosslinked pressure-sensitive adhesive is provided. The closure member is comprised of a heat-recoverable sheet and a layer of crosslinked pressure-sensitive adhesive, which maintains the closure of the closure member having the recovery process. The combination of a high surface energy heat-recoverable sheet and the crosslinked pressure-sensitive adhesive yield an article having excellent performance as a closure member.

Abstract: Improved imaging device for applying temporary indicia to substrate of the type having a base covered with a relatively light color, opaque, open cell microvoid-containing layer that is rendered translucent when the microvoids are filled with a liquid having a refractive index similar to that of the layer. The improvement in the imaging device involves insuring that the imaging liquid contains no substance having an evaporation rate less than about one-half of the liquid, thereby permitting the imaging device to be repeatedly applied to the same area of the substrate without leaving ghost images.

Abstract: A tape dispenser comprising a housing including a hub, a roll of tape journaled on the hub and a length of low tack pressure sensitive adhesive coated tape wound around the core. A paper backcard disposed around one end of the hub includes a plurality of generally triangular projecting portions projecting between the hub and the core to provide a friction brake therebetween restricting rotation of said hub to an extent that will prevent unwanted rotation of the hub and uncoiling of the tape when it is withdrawn from the dispenser.

Abstract: A simplified and low cost optical fiber connector incorporating strain relief means comprising a hollow housing within which a connection of optical fibers is isolated and stabilized from external strains and stresses by chocks located at opposing ends of the passageway through the housing which releasably secure the fibers in cooperation with the housing. The novel connector may be used with both polymeric and glass optical fibers, and with optical fibers which have or do not have buffer coatings. The novel connector may also be used to provide optical fiber connections incorporating strain relief means to a fiber optic splitter, a fiber optic coupler, and an opto-electronic package.

Abstract: Stretched surface recording disk (SD) 10 comprises an annular support 12 having raised annular ridges 42 and 28 at its inside and outside diameters 22 and 30 with a base portion 24 in between the two ridges, and an annular recording medium film 14 held in radial tension and stretched across the base portion by adhering the film to attachment surfaces 48 and 36 near the inside and outside diameters respectively. The SD is annealed twice during manufacture to relieve stress in the stretched film 14. This annealing results in SD essentially free from track anisotropy and stress distribution anisotropy in the plane of the disk. As a result, data tracks are more stable than in previous SD, track density can be greater, and the SD is generally more reliable.

Abstract: Fibrous webs of bicomponent fibers are made by extruding a layered molten mass through a row of side-by-side orifices into a high-velocity gaseous stream. Bicomponent fibers of small size can be obtained, and the webs offer unique properties.