Abstract: A catheter having an elongated folded sleeve of flexible material closely received on a shaft of the catheter. A method is provided for placement of the sleeve on the catheter shaft.

Abstract: A cylindrical shock absorber having a piston rod extending outwardly therefrom to which a disc-like upper cover plate is secured. The cover plate is castellated with peripheral teeth arcuately spaced from one another extending radially from the outer edges. The dust tube is formed from plastic sheet stock having a series of perforations adjacent one edge sized and spaced to receive the teeth of the cover plate. The sheets are wrapped onto the cover plate with the teeth projecting through the openings to form an outer cylinder. The adjacent end edges of the cylinder are heat welded or otherwise secured so that the cylinder is retained on the cover plate to form a cylindrical dust tube.

Abstract: A butterfly damper with a plurality of blades which can be locked in the open position, and which, when released, rotate about a hinge to the closed position. A pawl member, attached to one blade, extends away from the blade and through an opening in a second blade when the blades are in the open position. A mounting member attached to the second blade restrains the pawl member thereby holding the blades in the open position. A bimetallic link attached to the mounting member causes the pawl member to be released when the temperature of the air passing through the duct increases beyond a preselected level. A closure spring attached to the blades acts on the blades tending to force them apart against the action of the mounting member and the pawl member when the blades are restrained in the open position. The damper blades can be insulated to prevent the heat from a fire on one side of the damper from being conducted by the damper to the other side when the blades are in the closed position.

Abstract: A method and apparatus for dispensing a fluid in a conduit and more particularly for dispensing lubricant within an electrical conduit for facilitating pulling electrical cables through the conduit. The apparatus is in the form of a cartridge disposed in the conduit at an end thereof. The cartridge is made of a pair of sealed and separable members. One of the members is a flanged sleeve forming the casing of the cartridge, in which is coaxially disposed the separable member forming a tubular support member or carrier for a mass of resilient and absorbent lubricant impregnated porous material compressibly packed between the inner surface of the sleeve casing and the carrier. A cable pulling strand, or fishtape, is passed through the tubular carrier, and the cables to be pulled through the conduit are attached to the end of the fishtape. A plug inserted in the open end of the tubular carrier prevents the fishtape and the cables attached thereto from being pulled back through the carrier.

Abstract: A joint for wire cloth in which free loop portions at adjacent edges to be joined penetrate edges of an opposed wire cloth and are held open so that a locking wire penetrates through the loops; a method of joining the loops which includes holding loops of one wire open by means of a U-shaped bar so that the locking wire can be threaded into the bar and the loops, and as the locking wire is so threaded simultaneously withdrawing the U-shaped bar which has been holding the loops open; and apparatus for effecting the joining of loops of adjacent ends of wire cloth in which the loop forming seams are retained in a position so that a U-shaped bar can be introduced through one of the loops and holds them open for receiving free loops of a wire-screw so that a locking wire can be introduced through interdigitated loops of the wire cloths being joined.

Abstract: A device for stringing a multiplicity of wires through a memory array in a plurality of directions having means for guiding the wires into the array and for capturing the wires leaving the array and means for providing tension on the wires and for directing and causing the wires to pass through the array in the plurality of directions. The guiding and capture means are adapted both to constrain the wires in a preselected configuration and to permit the wires to be easily removed therefrom.

Abstract: In the post-stressing of concrete structures, a tendon comprised of a plurality of elongated strands is formed by inserting elongated strands which will eventually form the tendon into a plurality of parking ducts and then withdrawing the plurality of strands simultaneously as a group from the parking ducts and into the duct of the structure to be post-stressed without fouling and jamming. Once in the ducts of the structure, the strands are anchored and post-tensioned as a tendon to develop the desired stress.

Abstract: An apparatus and process for longitudinally encapsulating a bundle of aligned fibers within an elastomeric tube of smaller diameter than the normal diameter of the bundle in which: the tube is confined within a tubular inner channel of an openable casing, the diameter of the casing being at least as large as the normal diameter of the bundle; the ends of the tube are slipped over nipples at each end of the channel; air is pressured into the tube via one of the nipples thereby expanding the tube outwardly against the channel wall; the bundle of fibers is drawn through one of the nipples into the expanded tube; and the tube is depressurized to permit it to contract radially about the bundle of fibers.

Abstract: A highly accurate UHF television tuner utilizes an improved housing and an improved mounting system for securing the tuning rotor and stator within the housing. The housing is fabricated from sheet metal that is welded at the corners to provide mechanical rigidity, and soldered at the corners to provide a good electrical contact. A cover is placed over an open end of the housing and soldered at the corners further to increase the mechanical rigidity of the housing. The depth of the housing is increased to reduce the effects of the housing on the tuner elements. An eyelet is mounted in one end of the housing for supporting the rotor shaft, and the stator is mounted by insulating posts that are inserted through sleeves integrally formed in the housing. An improved contact for more effectively grounding the rotor shaft to the housing is provided, and an improved detenting system is provided for the selector shaft to reduce the effects of inertial creep.

Abstract: This invention relates to an automatic apparatus and method for coupling a workpiece to a specified position along a continuous length of line and then cutting the line to a predetermined length. A length of the line is clamped adjacent a leading section thereof and tensioned over the workpiece to which it is to be fastened. The tension is then regulated for providing slack in the line. Loop sections are then folded into the line and stuffed through one or more one way apertures in the workpiece. Additional tension is provided for unfolding the line within the apertures, thereby coupling the line to the workpiece. The length of line is then moved to another work area for being cut to the predetermined length. An apparatus in accordance with this method is also provided.

Abstract: A method of and apparatus for making substantially impenetrable members such as wall and floor members for bank vaults or the like. A fixture is used which facilitates the assembly of a plurality of expanded sheet metal members in a spaced stack thereof. Rod members are inserted transversely of the expanded sheet metal members with at least some of the rods extending beyond the sides of the spaced stack of expanded sheet metal members. The fixture is elevated at one end so that the rod members may be secured to the expanded sheet metal members simultaneously in a number of different positions. An auxiliary frame member may be employed whenever it is necessary to align the sheets vertically prior to being secured to the rod members.

Abstract: A method of making a thermal barrier shape or lineal construction element wherein a pair of lineal metal shapes adapted to receive a lineal insulating member or shape are aligned with each other in generally parallel spaced apart relation and the lineal insulating member or shape having small lineal projections thereon is slidably inserted between the metal shapes to join them together and form the thermal barrier shape. During joining, end portions of the projections on the insulating shape are shaved off to provide a tight fit between the metal and insulating shapes.This is a division of application Ser. No. 580,975 filed on May 27, 1975.

Abstract: A joint for wire cloth in which free loop portions at adjacent edges to be joined penetrate edges of an opposed wire cloth and are held open so that a locking wire penetrates through the loops; a method of joining the loops which includes holding loops of one wire open by means of a U-shaped bar so that the locking wire can be threaded into the bar and the loops, and as the locking wire is so threaded simultaneously withdrawing the U-shaped bar which has been holding the loops open; and apparatus for effecting the joining of loops of adjacent ends of wire cloth in which the loop forming seams are retained in a position so that a U-shaped bar can be introduced through one of the loops and holds them open for receiving free loops of a wire-screw so that a locking wire can be introduced through interdigitated loops of the wire cloths being joined.

Abstract: The vane structure fits within a side opening of an aircraft jet engine normally covered by a pivoted clam shell arrangement. When the clam shell arrangement is actuated, it swings from the side opening in a direction to intercept thrust gases normally passing rearwardly of the engine and direct the gases laterally out of the side opening, the vane structure directing the gases upwardly and forwardly to provide a reverse thrust. The vane structure itself includes a number of beams lying in parallel vertical planes and a number of vanes in the form of continuous strips extending transversely to the direction of the beams, the beams having slots through which the vanes pass to define an egg crate like interlocked grid structure. The vanes are tilted forwardly slightly relative to the vertical to provide the forward component of gas movement creating the reverse thrust.

Abstract: A wear-resistant drill pipe collar and method of making same are provided wherein such collar has at least one annular groove defined therein and such groove has cooperating surfaces which hold a plurality of easily installed and removed wear-resistant inserts which protect the collar and its associated pipe structure against excessive wear during rotation and axial movement thereof in an abrasive environment.

Abstract: A method of assembling a floatation unit wherein the unit is formed of a monolithic cell including a plurality of support rods passing therethrough to support the framework of a floating structure. The supporting rods are installed after the sealed unit is formed, by threading the elongated rods from one side to the other of the cell walls. This is accomplished by use of a guide rod, a threaded support rod which is threaded between oppositely disposed, bushing members adapted to receive the support rod. The guide rod is first passed through opposing bushings engaging the support rod as it is fed back through the bushing members, the guide rod providing a means by which the support rod can freely enter the oppositely disposed, bushing member positioned within the sealed wall of the cell.

Abstract: A method of manufacturing triple coincidence access 3-D memories (requiring 3 inputs for memory access) which, according to the invention, consists in making a flat core matrix threaded along three directions of the Cartesian system, the matrix is then positioned opposite the place of manufacturing a subsequent flat matrix, every matrix is secured in the position provided for it in the 3-D memory being manufactured and in which the subsequent weaving procedure is carried out until the preset number of matrices for the 3-D memory is obtained.

Abstract: A method of making articles of furniture, which can be assembled or disassembled, by a suitable combination of a plurality of sheet-like assembling members. A single rope is passed through through-holes made in the assembling members to tighten up the members. The tractive force of the rope may be utilized in assembly or disassembly of articles of furniture. The articles as desired may be rigidly and extremely simply assembled.

Abstract: A roofing system of the batten type using sheet metal components with wooden or metallic batten supports.With the batten supports in place elongated pan sections are laid between the batten supports and secured to the roof by nails or screws at the top or near the top of the adjacent batten supports. Each pan section has a wide flat elongated central region which lies flat on the roof and which is centrally located between two similar upstanding side walls running the full length of the central region and fitting between two successive battens. Each side wall has an inner, downwardly directed double fold running along the side of the adjacent batten support and terminating short of the central region. A batten covering cap having a centrally located top and downwardly directed wings each with an inner upwardly folded edge fitting behind the double fold is positioned in place by sliding it longitudinally over the associated batten support.

Abstract: A preinsulated pipe assembly and pipeline formed from a plurality of such assemblies. Each pipe assembly includes a pipe with a heater housing mounted thereon to form a cavity along the exterior of the pipe and a preformed insulation layer for insulating the pipe and the heater housing. A connecting assembly is used to join the pipe assemblies and form a pipeline. Pull means detachably connected to a heating element facilitates placement of the heating element in the heater housing cavities, and a pulling assembly attached to the heater element permits removal of the heater element after installation of the pipeline.

Abstract: Substantially rectangular veneer sheets of random lengths and widths are fastened in edge-to-edge relationship by raising integral fluke-like hooks or teeth in each sheet, abutting the edges of adjacent sheets, engaging continual strings or threads beneath the raised hooks, and depressing said hooks into planar relation with the sheets to provide a composite strip of veneer.

Abstract: A preformed net for V-shaped lacrosse stick head frames defining a tapered V-shape net area, the forward end of the frame being the wide area and the rear end of the frame being the narrower area having a handle extending rearwardly therefrom; and the method of constructing the net outside the frame. The net is formed in such a manner that the end of the net adapted to be secured to the forward end of the frame is of such width as to fit within the inside edge of the wide outer end of the frame, the width of the remaining portion of the net being wider than the tapered end of the V-shaped frame whereby when the preformed net is laced into the rear narrower portion of the frame the net will extend rearwardly of the frame to form a pocket for receiving and retaining the playing ball.

Abstract: A bead and a bead item is disclosed in which the bead has a projection extending therefrom having a dimension so that it can be pushed into a hole or groove in a grid and retained therein to make a bead design. The grid can be used in two ways in that it can serve as a permanent part of the bead structure or item after the design of beads has been built thereon or after the design has been completed the beads may be laced together with thread, wire, dowels and the like after which the bead projections are broken away at the bead body leaving the bead design without the grid. The projection may have a knob on the end thereof which is pressed into the hole or groove in the grid to more securely retain the bead on the grid. The beads may be of many different sizes and shapes. The grid may be thin or flexible enough so that it can be bent in forming a permanent part of the bead item. The grid can form a permanent backing such as for framing the bead design and other uses.

Abstract: A hydraulic reel is used to organize the streamer harness inside a tank having a nozzle. A piston attached to the harness is inserted into one end of the streamer jacket affixed to the tank nozzle. The tank is filled with a liquiform fluid, hereinafter called oil. Pressure is applied to the tank, the piston is pushed through the jacket, towing the harness. Pressure causes some jacket expansion. Initially, with the jacket in place on the nozzle, a main pump fills the tank rapidly, almost to overflow. A metering pump then fills the tank until oil enters a gage glass, indicating a full tank. A flow meter is set to zero with gage valve closed. Oil is metered into the tank, forcing the harness into the jacket. All oil entering the tank is metered until the end bulkhead is in banding position. The metering pump is reversed to extract excess oil until the required quantity is present in the jacket, as indicated by the net meter reading.

Abstract: This invention relates to a method of inserting tension wires in the process of wire assembling for a concrete pole or pile characterized in that forward ends of a required number of tension wires are clamped together by a chuck, and the chuck is inserted from one end of a wire cage to the other end and interiorly thereof, so that a number of tension wires can be inserted into the wire cage at one time.

Abstract: Method and means for adapting a poured concrete floor above a wire distribution system for installing outlets connecting with said system. A composite block assembly comprising a rupturable block covered by a hold-down plate having an access opening is preset at selected locations in the floor before the concrete is poured. To complete an outlet installation, the concrete above the access opening in an assembly is removed and the material of the block is withdrawn through the access opening, leaving a void in the concrete floor in which the components of an outlet assembly can be installed.

Abstract: A method for selecting replacement valve stems to replace corresponding defective valve stems including the steps of selecting a set of pattern valve stems representing the replacement stems and employing such pattern valve stems to construct a mold having coded cavities defining the contour of such pattern valve stems. Fluid plastic is then poured into the cavities of such mold while the mold is spun to force such plastic positively into such cavities under the influence of centrifugal force, the valve stem models formed in such cavities then cured and removed from the mold. The coded valve stem models are then collected together on a display board or the like to be displayed in a market area for viewing by customers so a customer desiring to replace a defective valve stem may compare such defective valve stem with the model valve stem to obtain a code designation to indicate the replacement valve stem corresponding with such defective valve stem.

Abstract: A method of reinforcing structures by means of tensioned steel cables is disclosed. A hollow conduit or duct is positioned in the structure and secured therein and made a part thereof by pouring concrete in a form surrounding the conduit. A specified number of steel strands, wires or cables are inserted and pushed through the conduit one-by-one by a mechanical strand pusher. A nose guide is positioned on the end of each of the strands if required to enable them to pass easily through the conduit. When the required amount of strands are positioned in the conduit and the concrete has set to a predetermined strength, the strands are stressed thereby putting the structure under compression.

Abstract: An auger device is used to attach rigidized surface insulation to a spacecraft. The auger is preferably screwed into an insulation tile which has been predrilled. The augertile combination is then fastened to the spacecraft using an attachment screw which penetrates the spacecraft skin and which is secured by a blind end fastener. In an alternate method, the auger is incorporated in the insulation tile when the latter is fabricated.

Abstract: An arrangement for generating and constructing three-dimensional surfaces in which the surface or body to be constructed is subdivided into planar elements. The contours or outlines of the planar elements correspond to respective cross-sections of the surface or body to be constructed. The planar elements are stacked against each other for constructing the surface or body.