Abstract: The present disclosure relates generally to roofing products, for example, shingles suitable for covering and protecting the roofs of houses, buildings, and other structures. The present disclosure relates more particularly to a roofing shingle including an upper edge, a lower edge, a first end, a second end, a headlap section, and an exposed section. A nail zone extends across the roofing shingle from the first end to the second end within the headlap section. The roofing shingle includes a top shingle layer including a top surface and a bottom surface. A reinforcement strip is secured to the bottom surface of the top shingle layer and overlaps with the nail zone. Further, a self-sealing material is disposed within the nail zone and is configured to form a seal around a mechanical fastener that punctures the roofing shingle in order to secure the roofing shingle to an underlying roof structure.

Abstract: An angioplasty balloon catheter particularly adapted for ablation of a stenosis in vivo has a balloon which may be inflated with a conductive contrast fluid injected proximally to the balloon, and is furthermore metalized on the outside of the balloon and catheter shaft. The balloon has piezoelectric properties, and may be excited by application of an ultrasonic signal across the balloon between the metalized surface and the contrast fluid. The catheter is guided by a centrally located guide wire to the site of the stenosis. If the distal tip of the catheter shaft cannot pass through the stenosis, excitation of the piezoelectric balloon in a deflated state at the site of the stenosis causes ultrasonic hammering vibrations at the tip of the catheter shaft which ablate the stenosis. After the tip of the catheter has hammered its way across the stenosis, and while maintaining the ultrasonic excitation signal, the balloon is inflated to keep the vibrating balloon surface in contact with the stenosis.

Abstract: An angioplasty balloon catheter particularly adapted for ablation of a stenosis in vivo has a balloon which may be inflated with a conductive contrast fluid injected proximally to the balloon, and is furthermore metalized on the outside of the balloon and catheter shaft. The balloon has piezoelectric properties, and may be excited by application of an ultrasonic signal across the balloon between the metalized surface and the contrast fluid. The catheter is guided by a centrally located guide wire to the site of the stenosis. If the distal tip of the catheter shaft cannot pass through the stenosis, excitation of the piezoelectric balloon in a deflated state at the site of the stenosis causes ultrasonic hammering vibrations at the tip of the catheter shaft which ablate the stenosis. After the tip of the catheter has hammered its way across the stenosis, and while maintaining the ultrasonic excitation signal, the balloon is inflated to keep the vibrating balloon surface in contact with the stenosis.

Abstract: Apparatus for changing the temperature of an infusible liquid from a first temperature to a second predetermined temperature. The apparatus includes a receiver assembly for changing the temperature of the liquid. The apparatus also includes a cartridge to be received in the assembly and which defines an enclosed passageway for movement of the fluid. The cartridge has a first end, a second end, a liquid inlet disposed adjacent the first end, a liquid output disposed adjacent the second end, and a first wall extending between the ends and made of a material having good heat transfer properties. The assembly includes a thermoelectric heat pump, and a slot is provided for releasably receiving the cartridge so that the heat pump engages the wall of the cartridge.

Abstract: A flow regulator for liquid to be administered parenterally to a patient comprises a first member having a flow passage therein for the liquid and a second member arranged to be adjustably telescoped in the passage. The first and second members are constructed such that they can be telescopingly positioned to form a flow rate controlling channel which restricts the flow rate as a function of the length of the channel. The length of the channel is adjustable by changing the relative position of the first and second members. An adjustment force applied to the outside of the regulator is transmitted to the second member within the flow regulator for changing the channel length and therefore the flow rate. The flow regulator can include a drip chamber positioned immediately above the second member for convenient adjustment of the flow rate. Sealing against leakage of air into the flow regulator is attainable because the flow rate controlling second member is located entirely within the first member.

Abstract: A variable infusion device for administering liquids parenterally to a patient is formed of inexpensive plastic members. The device includes an elongated passage defined between two members of the device which are bonded to one another. A third member is movable relative to the first and second members to change the length of the elongated passage through which liquid flows thereby changing the flow rate of the liquid through the device. The liquid flow rates to the patient can be incrementally adjusted over a wide range of flow rates. Settings also include a flow rate for merely keeping the patient's vein open.

Abstract: A fluid dispensing device useful as an inexpensive, light-weight ambulatory disposal drug infusion pump comprises a flexible reservoir for liquid to be administered parenterally to a patient, a mechanism for placing the liquid in the reservoir under a constant pressure for dispensing the liquid from the device, a distal septum for introducing liquid in the reservoir, and a flow control mechanism for adjustably controlling the flow rate of the liquid dispensed from the device.

Abstract: A variable infusion device for administering liquids parenterally to a patient is formed of inexpensive plastic members. The device includes an elongated passage defined between two members of the device which are bonded to one another. A third member is movable relative to the first and second members to change the length of the elongated passage through which liquid flows thereby changing the flow rate of the liquid through the device. The liquid flow rates to the patient can be incrementally adjusted over a wide range of flow rates. Settings also include a low flow rate for merely keeping the patient's vein open.

Abstract: An improved multiple re-entry implantable septum is disclosed. The septum comprises a casing and a resilient member positioned within the casing. The resilient member has a perforation therein which is compressed closed. An outer side of the casing presents a relatively large surface configured to channel the end of a slender, elongate component such as a needle to a predetermined location at a relatively small bore in the outer side of the casing. The small bore in the casing is located adjacent the perforation in the resilient member. An assembly of a first needle and a cannula positioned over the needle is inserted into the skin so that the end of the needle contacts the relatively large surface of the casing and is channeled to the small bore therein. The bore is dimensioned to prevent passage of the first needle through the casing. The first needle is withdrawn from the casing and skin leaving the plastic cannula in place adjacent the small bore.

Abstract: An improved peristaltic pump is disclosed which comprises a plurality of peristaltic tubes which extend from a central suction port to a common discharge chamber. A spiral cam engages the tubes and closes the lumens defined thereby. The spiral cam is rotated relative to the tubes to effect pumping.

Abstract: A peristaltic pump comprising a housing member containing a member having resilient walls defining a lumen, a shaft is rotatably mounted in the housing and carries a pumping member thereon extending radially of the shaft which acts on the lumen in a plane perpendicular to the axis of the shaft. The defined lumen is preferably elliptical in cross-section.

Abstract: The invention relates to a two-celled battery for use in cardiac pacer devices which comprises an outer encasement member and first and second internal cell elements. Each of the first and second cell elements includes an insulating cup, a lithium anode positioned within the cup, and a cathode positioned in contact with said anode. Each of the insulating cups includes an opening therethrough such that the lithium anode in the first cell makes contact with a terminal mounted through and insulated from the encasing means and the anode of the second cell is electrically in contact with the cathode of the first cell. The insulating cup of the second cell is positioned within the insulating cup of the first cell and both first and second cells are positioned within the encasing means such that the terminal contact with the first lithium anode and the encasing means is in contact with the cathode of the second cell.

Abstract: A battery structure using a plurality of cells in stacked array wherein each cell comprises an anode having a centrally positioned opening and flange positioned about the periphery of the opening for contact with the periphery of the opening of an adjacent anode. Each cell includes a pelletized depolarizer material that extends beyond the perimeter of the anode but coextensive with the anode flange. An outer encasement member receives the stacked array so that the depolarizer pellets are in electrical contact with the inner surface of the encasement. The encasement means includes a top member having an opening located to align with the openings in the anode and anode collector positioned through said opening in the top member and electrically insulated therefrom and in electrical contact with each of said anode flanges.

Abstract: The present invention relates to a lithium halide primary cell having means to indicate its end of life. The cell includes at least one lithium anode and a cathode in contact with a major surface of the anode wherein the indicating means comprises a stepped portion on the major surface of said anode which is not in contact with the cathode. The stepped portion of the anode comprises a surface area of from about 40 to 60% of the area of the major surface in contact with the cathode and about 15 to 5% of the total thickness of said anode.

Abstract: The present invention relates to a lithium halide battery structure comprising an outer metal envelope and top portion which is hermetically sealed to the envelope. The top portion includes an insulator conforming to and positioned thereon to the base configuration of the top portion and a support means having a base configuration substantially the same as the insulator. The support means also includes a flange depending from the support base and a pair of spaced apart post holders integral with said flange. First and second posts are positioned in the post holders with a metal anode collector screen positioned between and attached to said posts. The first post extends through the support means, insulator and top portion to define the anode terminal. The second post terminates in the associated post holder. A first and second pair of lithium anodes are pressure bonded together to sandwich therebetween the support means and anode collector screen.

Abstract: A lithium halide battery appropriate for low-cost, mass production is disclosed in which the battery comprises an outer encasement member having top and bottom portions and an opening through one with at least one pelletized depolarizer positioned within the encasement member and in electrical contact therewith. The battery includes a lithium anode in contact with the depolarizer but electrically separated from the encasement member. At least one insulator means is positioned in contact with the anode and includes an opening therethrough located to align with the opening in the encasement. A terminal pin is positioned through the opening in the encasement member, but insulated from the periphery thereof, and in electrical contact with the anode through the opening in the insulator means.