Abstract: A hybrid-electric propulsion system is provided. In one example aspect, the hybrid-electric propulsion system includes a power converter and a propulsor. The propulsor includes a gas turbine engine having a shaft and one or more bearings supporting the shaft. The propulsor also includes an electric machine electrically coupled with the power converter. The electric machine includes a stator assembly and a rotor assembly. The rotor assembly has a rotor and a rotor connection assembly. The rotor connection assembly operatively couples the rotor with the shaft. The rotor connection assembly has an insulated joint for interrupting common mode electric current from flowing from the rotor of the electric machine to the shaft. A grounding device is included to electrically ground the shaft. The power converter includes an electromagnetic interference filter to reduce common mode voltage reaching the electric machine.

Abstract: Certain shear bolts described herein provide failure bending resistance when torque is applied to members being connected by the bolts, while maintaining shearability. Certain other shear bolts described herein provide a shear region having different shear limits dependent upon the direction of force being applied to the shear region.

Abstract: A cryocooler, includes a cylinder filled with gas. A piston rectilinearly reciprocates inside of the cylinder and compresses or expands the gas. A connecting rod has a first side coupled to the piston and moves with the piston, and a second side having a first thread along an outer circumference thereof. A linear motor rectilinearly reciprocates a motor shaft toward the connecting rod in accordance with a control signal. A sleeve has two open sides, so that an end portion of the motor shaft can be supported by and inserted in one open side, and the second side of the connecting rod can be inserted in the other open side, and an inner circumference of the sleeve is formed with a second thread that engages with the first thread of the connecting rod and rotates to adjust a distance between the motor shaft and the connecting rod.

Abstract: A three-dimensional structure (1), which is made substantially of panel-shaped material blanks (3, 4, 5) is provided wherein adjacent material blanks are or can be each connected to one another by mutually opposing sides. At least two material blanks (3, 4, 5) which adjoin one another by opposing narrow sides can be detachably connected to one another without glue by at least one connection fitment (6) which (6) holds together the mutually adjoining narrow sides of the material blanks (3, 4, 5) by at least one screw connection.

Abstract: The bolt has, in sequence along a bolt axis: a threaded portion, a thread run-out portion, a shank, and a head, the threaded portion having a thread with a given root radius and a given depth, the thread run-out portion connected to the shank via a thread run-out fillet having a thread run-out fillet radius, the thread run-out fillet radius being between two and six times the thread root radius.

Abstract: A rotary cutting tool includes a cutting tip having a cutting portion adapted to perform cutting operations on a workpiece and a threaded aperture defined therein generally opposite the cutting portion. The cutting tool further includes a generally cylindrical tool body disposed about a central longitudinal axis, the tool body having a first end portion adapted to be coupled to a machine tool and an opposite second end portion including an aperture having a coupling mechanism disposed therein. The coupling mechanism includes a first threaded portion cooperatively engaged to the threaded aperture of the cutting tip. The first threaded portion is moveable with respect to the tool body in a manner that selectively couples the cutting tip to the tool body.

Abstract: A bolt for use with a hydraulic disc brake caliper. The bolt includes a head and a shaft extending outwardly from the head. The shaft includes a threaded portion having a diameter, at least one channel defined in the outer surface of the threaded portion, first and second reduced diameter portions defined at least partially circumferentially around the shaft and a blocking portion separating the first and second reduced diameter portions.

Abstract: A composite chair includes a chair frame and a fastening assembly. The chair frame includes a front support portion, a rear support portion and two support seat tubes connecting the front support portion to the rear support portion. The rear support portion includes a holding portion and two locking holes. Each support seat tube has a first opening and a second opening faced the fastening hole. The fastening assembly includes two fastening elements inserted in the first openings, a support bar connected to the two fastening elements and two fasteners run through the locking holes and the second openings to fasten to the fastening elements. Each of the fastening elements includes a butting portion and a screw hole. Each of the fasteners includes a thread portion fastened to the screw hole and a detent block butting the holding portion. The composite chair thus formed can be assembled easily.

Abstract: A portable support for supporting equipment above a surface having an opening to a subsurface space. The support includes a head, an elevator on the head, and legs connected to the head for supporting the head above the surface. Each of the legs has a foot for engaging the surface when supporting the head above the surface. The support also includes an elongate rod vertically mounted on the elevator for movement between a raised position, in which an upper end of the rod extends above the head, and a lowered position, in which a lower end of the rod extends below the feet of the legs to extend into the subsurface space. The support includes an instrument platform positionable on the lower end of the rod when in the lowered position to support the equipment in the subsurface space when the rod is in the lowered position.

Abstract: A turbine engine shaft includes a first sub-shaft, a second sub-shaft and a tie shaft. A first bearing surface of the first sub-shaft axially engages a second bearing surface of the second sub-shaft. The tie shaft includes an intermediate tie shaft segment connected axially between a first tie shaft segment and a second tie shaft segment. The first tie shaft segment includes a first threaded tie shaft surface that is mated with a first threaded shaft surface of the first sub-shaft. The second tie shaft segment includes a second threaded tie shaft surface that is mated with a second threaded shaft surface of the second sub-shaft. The tie shaft also includes a sub-shaft bumper stop extending radially from the intermediate tie shaft segment to a bumper stop distal end, which has a radius that is greater than a radius the first and/or second threaded shaft surfaces.

Abstract: A power line spreading device used to separate the two conductor lines of a twisted pair conductor. The spreading device includes a substantially conical body and a handle. The body further includes a groove in an outer surface orientated in a conic spiral along a length of the body wherein the diameter of the conical body gradually increases from a first end to a second end. The spreading device is engaged with the two conductor lines proximate the first end, rotated about an axis of rotation whereby the groove acts to draw the two conductor lines from a first end toward a second end of the body. The gradual increase in diameter of the spreading device causes and maintains a desired spread distance between the two conductor lines of a twisted pair connector.

Abstract: A device and method for assembling two structural elements made from a composite material is provided. The device includes two cylindrical flanged receptacles, each pierced by an aperture perpendicular to the axis of the cylinder, and a shaft that can be introduced into said apertures. The device also includes bearing means, which bear on the interior surfaces of the cylindrical receptacles and can maintain tension in the shaft when the shaft extends through the apertures in the two receptacles. The device includes means of placing the shaft under tension.

Abstract: A power line spreading device used to separate the two conductor lines of a twisted pair conductor. The spreading device includes a substantially conical body and a handle. The body further includes a groove in an outer surface orientated in a conic spiral along a length of the body wherein the diameter of the conical body gradually increases from a first end to a second end. The spreading device is engaged with the two conductor lines proximate the first end, rotated about an axis of rotation whereby the groove acts to draw the two conductor lines from a first end toward a second end of the body. The gradual increase in diameter of the spreading device causes and maintains a desired spread distance between the two conductor lines of a twisted pair connector.

Abstract: A threaded connection for an electrode holder and an electrode in a plasma arc torch is provided. The threaded connection has relatively low height, and the engaged portion of a male threaded portion of the electrode and a female threaded portion of the electrode holder are positioned at least partially within a nozzle chamber. In one inventive aspect, the nominal pitch diameter of the electrode is less than the minor diameter of the electrode. In another, the width of the root area of the electrode thread is wider than the width of the root area of the electrode holder thread by at least about 35%. The width of the root area of the electrode is at least about 15% wider than the width of the crest portion of the electrode. As such, the less consumable of the two parts, the electrode holder, is provided with a thread that is less likely to be worn and damaged. In one particular embodiment, the crest profile of the electrode is that of a Stub Acme thread separated by a larger root profile.

Abstract: Some embodiments relate to an electrical contact assembly for a plasma torch tip, and may include an electrical contact portion, a compressible portion in mechanical communication with the contact, and a mounting portion in mechanical communication with the compressible portion. Some embodiments may be adapted to maintain contact with an uneven substrate during translation of the torch tip.

Abstract: An aerogenerator blade assembly has a blade with a first side and a second side an insert member positioned therein and therebetween. The insert member has a first surface in toothed engagement with a toothed surface on an inner surface of the first side of the blade, The blade has a first sector and a second sector affixed to the insert member. A first positioning rod is affixed to the first and second sides of the first sector of the blade and with the insert member. A second positioning rod is affixed to the first and second sides of the second sector of the blade and with the insert member.

Abstract: A tubular connector system for joining two pipe ends without the necessity of rotating the pipe ends. A coupling has opposing tapered ends. Each of the tapered ends slopes inwardly from an inner extent to an outer extent to form a respective mouth opening of the body. Each tapered end of the coupling has a contoured surface which is made up of a series of alternating helical spline wedges. The wedges are oppositely tapered from an inner extent to an outer extent, whereby the helical spline wedges form an alternating series of lands and grooves on the body as viewed from the respective mouth openings. The two opposing pipe ends have mating engagement surfaces which engage and mate with the contoured surfaces of the coupling as one pipe end is pushed toward the other during assembly.

Abstract: Linear actuator device, comprising a housing (2), an externally threaded screw (5), a piston (9) and an internally threaded extended nut (7), where the extended nut (7) comprises a plurality of longitudinal segments (40) having longitudinal edges (39) parallel to a center axis (18) of the internally threaded nut (7), where each segment (40) has an identical radius of curvature and an angle of curvature of less than 360°, so that the circumference of the internally threaded nut (7) is formed by at least two segments (40). One advantage of the invention is that linear actuators of different lengths can be manufactured in an easy and cost-effective manner.

Abstract: An improvement in a sucker rod having an elongated metal body with opposed ends and threaded couplings positioned at each of the opposed ends comprises a thread form on the threaded couplings defining at least two concurrent helixes. Each of the at least two helixes has a different starting position on a circumference of the threaded coupling.

Abstract: A connecting device for connecting at least two components (1, 2, 3), particularly floor or wall or ceiling elements, of a wooden structure to each other, particularly of a timber house, including at least one pin (4), a first fastening element (5, 5?, 5?) for fastening the pin (4) to one of the components (1, 2, 3), and a second fastening element (6, 6?) for fastening the pin (4) to another of the components (1, 2, 3), the pin (4) connecting the fastening elements (5, 5?, 5?, 6, 6?) to each other, and at least one intermediate layer (7) made of vibration-damping material being arranged on a side of at least one of the fastening elements (5, 5?, 5?, 6, 6?). Additionally, the pin (4) is also enveloped at least in some regions with at least one further intermediate layer (8) made of vibration-damping material.

Abstract: A vertical column coupling providing a means for creating entire concrete forms for constructing the ceiling and floors of multistory buildings utilizing a plurality of pipe columns and supported form slabs that are erected to a desired height and in horizontal alignment. Additionally the present invention provides for the ability to pour concrete in one continuous pour from the top and easy disassembly and removal of the device after said poured concrete has dried.

Abstract: An adapter of the present invention includes a main body, at leak one jointer and at least one screw. The main body is a hexahedron and has six combining surfaces. Each of the combining surfaces is formed with at least one threaded bore. The jointer is adapted for an extender to connect thereto, and the jointer has an abutting surface to attach to one of the combining surfaces. A contour of the abutting surface lies within that of its corresponding combining surface. The abutting surface has at least one through bore corresponding to the at least one threaded bore. The screw is extended through the through bore and threaded with the threaded bore to detachably fix the jointer with the main body.

Abstract: A cleaning implement that includes a connector for connecting a handle to a base block. The connector prevents the handle from rotating relative to the base block and, thus, the connector prevents the handle from unscrewing or otherwise loosening or disconnecting from the base block. The base block can include a headpiece supported between oppositely arranged shoulders, a generally cylindrical flange projecting from the headpiece, and a generally cylindrical opening extending through the cylindrical flange. A slot may be formed in an inner surface of the cylindrical flange. A ferrule that can have a generally dovetail-shaped projection provided on its outer surface can be secured to an end of the handle. The projection and the slot can form a joint when the handle is connected to the base block. This joint substantially prevents the handle from rotating relative to the base block.

Abstract: Adjacent precast reinforced concrete modules or members are secured together by a plurality of coupler systems each including a cast metal coupler body embedded in an edge portion of the first concrete member and connected by a coupling member to a reinforcing bar within the first concrete member. The coupler body has an internal cavity with a side opening and an end opening extending to the cavity, and reinforcing wings border the side opening. The second concrete member has another coupling member rigidly connected to an axially aligned reinforcing bar and includes an end portion with a threaded bore. A bolt is inserted into the cavity through the side opening, aligned with the end opening and then threaded into the bore where the bolt is tightened with a wrench extending into the cavity through the side opening. A reusable locating pin may be used to align the concrete members.

Abstract: Actuator stem and rod end bearings having locking mechanisms are described. An example apparatus for use with a control valve actuator includes a rod end bearing having a bearing retainer and a shaft portion extending from the bearing retainer. The apparatus also includes an actuator stem having a first end to be operatively coupled to a diaphragm plate of the control valve actuator and a second end to be coupled to the rod end bearing. A locking mechanism coupled to the actuator stem or the rod end bearing prevents the actuator stem and the rod end bearing from decoupling when the actuator stem is coupled or de-coupled to the diaphragm plate.

Abstract: Provided are a paper pickup device and an image forming apparatus having the same. The paper pickup device and the image forming apparatus having the same include a driving shaft whose end has a first combining portion and a driving shaft having a second combining portion configured to be integrally connected with the first combining portion. When the first combining portion and the second combining portion are combined with each other, the driven shaft bends and separates from the driving shaft. The first combining portion and the second combining portion may be screw-coupled to each other.

Abstract: A coupler for securing an auger and/or extension piece(s) to a PTO shaft. In one construction, a threaded PTO collar mounts to a PTO shaft and mates with a suitable length stub shaft and captured, knurled hand nut mounted to an auger. The stub shaft indexes in non-rotational engagement to the PTO collar. In another construction, a PTO collar provides several detents that interconnect with resiliently biased projections at an auger collar. A hand piece maintains the connection. In other embodiments, key(s) at the PTO shaft mate in non-rotational engagement with keyway(s) at an auger and a resilient member latches the non-rotational connection. Shaped PTO shaft surfaces and complementary auger coupler surfaces can be included with the later couplers to enhance the connection.

Abstract: A universal connector apparatus for securing a male-threaded utility handle end into a female receptacle of a tool assembly comprising a tool, comprising: a substantially-circular friction ring; a substantially-circular thread neck attached at a leading end thereof to, and centrally-aligned with, a trailing end of the friction ring; and a substantially-circular threaded-end aperture running centrally through the friction ring and thread neck combination.

Abstract: A steel bar connecting structure is disclosed. The steel bar connecting structure includes a connecting sleeve having on an inner circumference thereof an internal threaded part, and a steel bar having an external threaded part which engages with the internal threaded part. The steel bar is inserted into the connecting sleeve. Each of the internal threaded part and the external threaded part is formed such that a crest of each of threads thereof is cut. Thereby, when the steel bar is strongly coupled to the connecting sleeve, a neighboring crest and root of the internal threaded part and the external threaded part are not in contact with each other, whereas inclined flanks of the threads of the internal threaded part and the external threaded part are in close contact with each other.

Abstract: A system and method for supporting a building in which elongated sections, such as pilings, are connected in an end-to-end, abutting relationship.

Abstract: A turbine/compressor stator joint that may include a flange, an aperture extending through the flange, and a bolt extending through the aperture. The bolt may include a shank and a layer of insulation surrounding the shank.

Abstract: A device comprising two hollow profiles which are arranged approximately at a right angle from each other and each of which is provided with a profiling channel that extends parallel to the longitudinal axis (A) of the profile and an undercut longitudinal groove in at least one lateral face of the profile, the longitudinal groove extending parallel to the profiling channel. The two hollow profiles are held together by a connecting screw whose shaft engages into the profiling channel of one hollow profile and whose screw head is mounted within an undercut longitudinal groove of the other hollow profile. The periphery of the screw head is provided with grooves or notches that run on planes extending from the longitudinal axis (M) of the shaft while forming ribs therebetween.

Abstract: A joint for a cue stick where the cue stick has first and second cue stick portions. The joint can include a first joint member for securing to the first stick portion. The first joint member can have a joint securing male threaded region and a locating tip at a distal end. A second joint member can be included for securing to the second stick portion. The second joint member can have a bore for receiving the locating tip, and a joint securing female threaded region for engaging the joint securing male threaded region of the first joint member for coupling the first and second joint members together. The locating tip can have a pivot structure that is configured to engage the bore and pivot against the bore such that the first joint member is capable of pivoting about the pivot structure to compensate for misalignment of the first and second joint members.

Abstract: A motor (2) of a linear motion device (1) has a hollow motor shaft (21). A ball screw shaft (41) is inserted in a hollow section (25) of the hollow motor shaft (21), and a first male screw section (43), formed on the outer periphery of the ball screw shaft, is screwed into a female screw section (26), formed in the inner periphery of the hollow section, and fixed in position. A nut (46) is crewed on a second male screw section (45) formed on a shaft end section (44) of the ball screw shaft (41) that projects from the rear end of the hollow motor shaft, and the nut (46) is tightened at predetermined torque to a rear end face of the hollow motor shaft. Tensile force occurring between the first male screw section (43) and second male screw section (45) of the ball screw shaft (41) prevents loosening of the screwed section between the hollow motor shaft (21) and the ball screw shaft (41), and, as a result, the ball screw shaft (41) is kept firmly fixed to the hollow motor shaft (21) without having play.

Abstract: A chemically anchorable fastening element (6), includes a holding section (16; 56) for contacting a wall of a borehole (6) and provided with a thread-tapping outer thread (19) and with a load application element (18; 58), a connection section (26; 66) adjoining the holding section (16; 56) and having a smaller radial dimensions than the holding section (16; 56), and an anchoring section (36; 76) adjoining the connection section (26; 66) and likewise having smaller radial dimensions than the holding section (16; 56).

Abstract: An electrode joint is presented, the joint including two joined graphite electrodes having blocked threads and having a locking ring interposed between the electrodes, the locking ring composed of a material having a coefficient of friction such that the tendency of the electrode joint to unscrew is retarded.

Abstract: Apparatus and methods for providing a separable golf club are provided involving a connector having a male connector and a female connector configured to be selectively matable. The male and female connectors are configured to facilitate assembly of the connector with a reduced likelihood of damage to threaded portions of each component by the presence of complementary engaging surfaces, such as blunt tip and smooth alignment portions of the male connector. Additionally, the male and female connectors each may have a shoulder portion with a larger dimension than other portions of the connector in order to provide a secure coupling of the components.

Abstract: A combinational bolt which comprises a screw unit and a sleeve unit. The screw unit has a plurality of threads on a surface of a front terminal, the threads make the screw unit connect with a target object, another terminal of the screw unit forms a first concave portion. The sleeve unit, which is set inside the target object, also connects and surrounds the screw unit. A sink-proof portion is set on the surface of one terminal of the sleeve unit, the sink-proof portion makes the sleeve unit clamp onto the target object, and the outer surface of the sleeve unit has a plurality of strengthen circle units and a plurality of cut slots, and a second concave portion forms inside the sleeve unit, the first concave portion and the second concave portion clamp together.

Abstract: An electrode joint is presented, the joint including two joined graphite electrodes and having a joint strengthening ring interposed between the electrodes, the joint strengthening ring composed of a compressible.

Abstract: An insert for a high stress connection. The insert has a housing having a generally cylindrical body and a flanged end with a generally cylindrical inner surface that may accommodate a bolt. The insert may have either an end cap or a thinned portion, or both. The end cap may be attached to the flanged end of the housing and sized such that the bolt does not pass through the end cap. The body may have the thinned portion.

Abstract: Precision aligning fastener for releasably joining two halves of a manufactured article. The precision aligning fastener has a male body that threads into a female body. The threads on the male and female threads, bodies are provided in an interrupted-thread pattern, allowing the male body to be completely inserted into the female body before twisting and engaging the threads. A stop means is provided, to assist in aligning and to prevent overtightening of the fastener. The fastener is particularly well-suited to releasably join long, slender articles that must be precisely aligned to function properly, such as a hunter's longbow, billiard cues, furniture, etc.

Abstract: A hollow dowel pin adapted to secure together at least two mating components during the assembly thereof includes an elongate generally cylindrical main body portion, first and second mating edges, and at least one outwardly extending tab. The elongate generally cylindrical main body portion is preferably formed from a sheet member, and the first and second mating edges are disposed along a length of the body portion being spaced from one another. The at least one outwardly extending tab is formed along the main body portion and is adapted to engage one of the mating components when an end of the main body portion is frictionally held in an opening formed in the other of the mating components.

Abstract: In a shaft coupling having a pair of complementally shaped, detachably joinable coupling sleeve halves (11, 12) which can be clamped together by means of clamping elements to form a split coupling sleeve provided with at least one seat (14) for a first shaft member (A1) which is to be non-rotatably connected with a second shaft member (A2, A2?) so that the first and second shaft members are aligned.

Abstract: A system and method of installing a preconstruction support system for a building, according to which the corresponding ends of two piling sections are connected together and an a auger is provided on one or more of the piling sections. The piling sections are driven into the ground in a manner so that a portion of the uppermost piling section extends above ground; and a concrete slab encases the portion of the piling sections.

Abstract: A connection arrangement accommodates misalignments in three dimensions, and achieves a positive fixed connection between two components. A threaded standoff with a first bolt hole therein is partially screwed into a threaded hole in the first component and protrudes to match the spacing distance between the components. Inner and outer eccentric disks are received and supported in a hole in the second component. The inner disk has an offset center relative to the outer disk, and has a second bolt hole offset from the inner disk's center. Rotating the two disks accommodates radial misalignments to bring the two bolt holes into alignment. A bolt shaft extends through the bolt holes. While a bolt head or nut at one end of the shaft bears against the eccentric disks, a clamping cone at the opposite end of the shaft is tightened to axially clamp the standoff against the second component, and to radially outwardly spread and clamp the standoff against the internal threading of the first hole in the first component.

Abstract: A system and method of installing a preconstruction support system for a building, according to which the corresponding ends of two piling sections are connected together and an a auger is provided on one or more of the piling sections. The piling sections are driven into the ground in a manner so that a portion of the uppermost piling section extends above ground; and a concrete slab encases the portion of the piling sections.

Abstract: The present invention relates to a mounting structure which is arranged at two abutting structural panels (1, 2) so that said structural panels are connected with each other, comprising two pairs of clamping plates, with one of said pairs of clamping plates being fixed to one structural panel (1), and the other pair of clamping plates being fixed to the other structural panel (2). The two pairs of clamping plates abut against each other with one of their clamping plates (3, 4), and the two abutting clamping plates (3, 4) are provided with mutually aligned, undercut longitudinal slots (5) which receive a connecting plate (6) connecting the abutting two clamping plates (3, 4) with each other and being fixed to the two clamping plates (3, 4) by means of fasteners (7) which extend through said connecting plate (6). Thus, a mounting structure is provided whose manufacture is relatively easy and cost-efficient.

Abstract: A cable adjustment tool includes an upper bar and a lower bar each having a top side, a bottom side, a first end and a second end. The first end of the upper bar has a slot extending therein for receiving a first of a pair of lug nuts. The first end of the lower bar has an indentation extending therein for receiving a second of the lug nuts. A threaded rod is attached to and extends between upper and lower bars such that the indentation and the slot are substantially aligned. The rod has a break therein. A sleeve has a threaded bore extending therethrough that has first half having a first direction of threads and a second half having a second direction of threads. The rod is threadably coupled to the sleeve. Rotation of the sleeve moves the upper and lower bars with respect to each other.

Abstract: A construction intended for a carrier rocket or a satellite, comprising a first construction part (21), which is made of a composite material comprising two essentially parallel walls (23, 24) and a core (25) arranged between these walls, a second construction part (22) and means (26, 31; 26?, 31, 39) for joining the first and the second construction parts (21, 22). Said means (26, 31; 26?, 31, 39) comprising a first fastening element (26) provided with several threads (27), or several first fastening elements (26, 26?) provided with at least one thread (27) each, said first fastening element/elements (26; 26?) being arranged between the walls (23, 24) of the first construction part (21) in such a way that the threads (27) are accessible via the end surface (28) of the first construction part that faces the second construction part (22).

Abstract: A connection point (1) between two tool parts is proposed which are joined by means of a threaded spindle (7) oriented in longitudinal direction of the tool parts. The threaded spindle has two oppositely threaded sections (13, 15) which interact with two threaded areas (17, 19) in the tool parts. The connection point (1) is distinguished in that at least one end area of the threaded spindle (7) has a shoulder (63), the outside diameter of which is smaller that the interior diameter of the associated threaded area (17).