Abstract: An elastic connecting element, a processing method thereof and a flexible drill including the elastic connecting element are provided. The elastic connecting element includes an elastic part and an outer housing sleeved over the elastic part, the outer housing being formed by connecting a plurality of connecting bodies; the connecting body including a main body and convex teeth provided at two ends of the main body; a groove being formed between each two adjacent convex teeth in each connecting body, such that the two adjacent connecting bodies are connected by fitting the convex teeth of one connecting body with the grooves of the other connecting body.

Abstract: A device for cutting tissue including (a) an elongated shaft body defining a drive lumen, (b) a cutting head extending from a distal end of the elongated shaft body and being rotatable via a drive shaft disposed within the drive lumen, and (c) a retainer for keeping the cutting head attached to the shaft body if the cutting head becomes detached from the drive shaft or if the drive shaft breaks. A flexible drive shaft including (i) a core configured for resisting helixing, and (ii) at least one outer layer configured for transferring torque. A method of producing a flexible drive shaft including providing a core configured for resisting helixing, and wrapping the core with at least one outer layer of wires configured for maintaining high torsional rigidity. Related apparatus and methods are also described.

Abstract: Various drop head coupling assemblies are described. The coupling assemblies enable a drop head tool typically used in drain cleaning operations to be releasably engaged with a drain cleaning cable. The coupling assemblies enable the drop head tool to undergo a wide range of motion relative to the drain cleaning cable, particularly during rotation of the cable and drop head.

Abstract: A parking cable has a plurality of plastic split type liners, which reduces frictional resistance between the inner cable and a conduit among the components of the parking cable. The plurality of split type liners is press-fitted and disposed to a desired position in an inner diameter of the conduit. The plastic split type liners may serve as a guide that ensures force for smoothly moving the inner cable and also improve in-line assembly properties. A method of manufacturing the parking cable includes press fitting the plurality of split type liners between the inner cable and the conduit.

Abstract: A rotation transmitting mechanism comprises: a three-layered coil that has an innermost layer coil portion, a middle layer coil portion and an outermost layer coil portion with alternating winding directions; and at least one elastic band that is fit to an outer peripheral area of said three-layered coil to press said outermost layer coil portion toward an inner peripheral side.

Abstract: A tube structure for bicycle cable includes a rigid metallic member spirally wound into a tubular body. The tubular body has a channel centrally defined therein and axially extending therethrough for adapting to be passed through by a bicycle cable. A flexible metallic member is connected with the rigid metallic member and is spirally disposed along a length of the rigid metallic member. When the tubular body is impacted with an external force, the rigid metallic member provides an enhanced rigidity to the tubular body for preventing a deformation of the tubular body. The flexible metallic member and the rigid metallic member are alternately arranged so as to allow the tubular body to be bendable and have a sufficient ductility.

Abstract: In a flexible pipe having shape retaining capabilities, a first pipe is provided having a first base wire and a first subsidiary wire, the first base wire being wound in a spiral manner, the first subsidiary wire externally covering the first base wire and being fit into an external valley of the first base wire, and a second pipe having a second base wire and a second subsidiary wire, the second base wire being wound in a spiral manner in an opposite direction from the first base wire, the second subsidiary wire externally covering the second base wire and being fit into an external valley of the second base wire. The second pipe being provided inside and in contact with the first pipe. When a torsional force is applied to the first pipe, the second pipe generates a bearing force against the torsional force.

Abstract: A flexible composite drive shaft used with a flexible vascular atherectomy catheter for connecting a proximal rotating drive member and a distal rotatable working member. The flexible composite drive shaft includes a core of specially selected highly elastic shape memory alloy surrounded by a flexible torsional reinforcing helical wound member and a covering of a smooth polymeric material penetrating the interstices between the wound member and the outer surface of the core. The material of the core, the relative winding direction of the reinforcing member and the direction of angular offset between the reinforcing member and the core are selected to optimize the consistency of the rotational characteristics of the drive shaft in use.

Abstract: A motion transmitting remote control assembly (10) for transmitting motion in a curved path including a liner (12) disposed within a conduit (16) and a motion transmitting core element (14) moveably supported by the liner (12). The liner (12) is made essentially of polytetrafluoroethylene (PTFE). The assembly (10) is characterized by the liner (12) further including poly(amide-imide) for increasing the strength and lubricity thereof. Preferably, the liner comprises 97 weight percent polytetrafluoroethylene and 3 weight percent poly(amide-imide).

Abstract: A meter cable sheath structure for accommodating a flexible rotary shaft suitably used for vehicle indicators is made in such a manner that a high tension resistible fiber impregnated with adhesive resin is braided around an external surface of an inner sheath having a hollow space for storing the flexible rotary shaft and further an external covering layer firmly adhered to the high tension fiber is formed by means of the adhesive resin.

Abstract: To set up sealing between two parts, having the possibility of relative rotation to a limited extent around a determined axis, a concertina element is used. This concertina element has two rigid, end tubular sections, fixedly joined in an impervious way with respective zones of each of said parts and an intermediate tubular part between said end tubular sections, and is capable of changing shape under torsion around said axis, to an extent that is at least equal to said extent. Thus, all risks of leakage between the two parts are removed.

Abstract: A flexible cable conduit having an anti-friction liner adapted to surround a movable core. The liner in turn is surrounded by a plurality of spiraled lay wires. The lay wires in turn are surrounded by a spiral wound overlap wrap where the wrap comprises a plastic material to provide a sealing means for the conduit and has high tension properties to constrain the wires from moving radially on any bending of the conduit.

Abstract: A flexible cable assembly for actuation of an automobile speedometer or the like, comprising an inner core member and a tubular casing that includes an outer housing and a spiral-cut tubular liner with multiple internal ribs. The liner is constructed by extruding a cylindrical tube with at least one internal longitudinally extending rib. The tube is then cut helically so as to offset circumferentially the rib segments on adjacent turns of the strip, providing multiple internal supports for the core member.

Abstract: A portable paint spraying device for generating a paint spray by centrifugally impelling liquid paint from the edge of a vertically oriented spinning disc. The disc is driven by an electric motor which also drives a conveyor screw used to lift the paint upwardly from a reservoir or container through a vertically oriented pump tube and into a spray chamber in the sprayer housing. The pump tube has a horizontal portion at the upper end thereof terminating in a delivery orifice through which the liquid paint is discharged into a centrally located recess or well in the front face of the disc. The disc has a relatively large flat annular region surrounding the central well which is in turn surrounded by an outer peripheral angled flange or lip having a feathered edge.