Abstract: An apparatus to tie concrete or masonry forms to existing concrete, block, or masonry structures, comprising an elongate, generally cylindrical bar. Said bar comprises, at one end, a means for anchoring the apparatus into an existing structure, at the other end, a means for coupling said apparatus to a form, and, connecting the ends to each other, a shank.

Abstract: A positioning assembly includes a fastener and a pin. The fastener includes a latching portion and a fixing portion coaxially connected to the latching portion. The pin is movably received and fixed in the fastener. The fixing portion defines a threaded portion in a side surface of the fixing portion and a pinhole in an end surface of the fixing portion. The pin is received in the pinhole.

Abstract: A press-set threaded screw assembly includes a first member having an aperture. A second member abutting the first member includes a threaded bore co-axially aligned with the aperture. A screw body includes a body flange, a neck portion, and a threaded member. The threaded member in a non-installed condition has first and second displacement portions separated by a tapered slot, each having a main thread portion. A pin is frictionally received in a bore created through the body flange and neck portion in a screw non-installed condition. The threaded member is inserted through the aperture and received in the threaded bore in an initial installation condition. The pin is axially aligned to slide into the tapered slot, whereby the pin oppositely displaces the first and second displacement portions away from each other to contact a plurality of female threads of the threaded bore, defining an installed condition.

Abstract: Microwave antenna assemblies incorporating a high-strength antenna coupler are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a microwave antenna coupler. In embodiments, the described antenna coupler includes a dielectric member and at least one discrete coupling member. The coupling member isolates coupling forces, such as tension and torque, from the dielectric member, which may prevent cracking and reduce the incidence of mechanical failure of the dielectric. The coupling member may be formed from high strength materials, such as stainless steel, allowing greater coupling forces to be achieved when compared to couplers using only dielectric materials. The coupling member may additionally include reinforcing members which extend into the dielectric member for increased strength.

Abstract: The invention relates to an earth boring device including a housing which has at least one portion with an inner thread, and a threaded element which has a corresponding outer thread, wherein the threaded element is slotted and has a receptacle for a securing element which increases the outer diameter of the threaded element and the contact pressure of the threaded connection between threaded element and housing, when inserted in the receptacle.

Abstract: A bicycle component is configured with an axle fixing structure. In the preferred embodiment, the bicycle component is an electric derailleur. The bicycle component has a base member rotatably supported on an axle. Preferably, the axle includes a shaft portion with a head portion disposed adjacent a first end of the shaft portion for limiting axial movement of the base member in a first axial direction of the shaft portion, and a threaded portion disposed adjacent a second end of the shaft portion with external threads. A first locking member is threaded onto the external threads and configured to limit axial movement of the base member in a second axial direction of the shaft portion. Preferably, a second locking member is threaded into the internal threads of the second end of the shaft portion to secure the first locking member on the fastening portion of the axle.

Abstract: A linear locking set screw system capable of rapid linear engagement and disengagement includes a threaded outwardly expandable set screw and an expander member which are constructed and arranged to thread easily into a threaded aperture while in a first release position and can thereafter be securely locked in place and/or provide a secondary clamping force in a second engaged position. In this manner, the linear fastener system is capable of providing a precise, secure, and reproducible connection between multiple components without the need to apply rotational torque to the assembly.

Abstract: The present invention provides devices and methods for indicating or gauging the position of one or more holes in a workpiece. In one aspect of the present invention reusable devices that can be removably engaged with a bore or tapped hole in a workpiece for accurately indicating the center axis of the bore or tapped hole are provided. An exemplary device in accordance with the present invention includes an expandable shank, indicating surface, and driving head. The driving head can be used to install the device into a hole in a workpiece. The expandable shank can be expanded to positively engage the device with the hole in the workpiece and the indicating surface can be referenced, with a probe, to determine the center axis of the hole in the workpiece.

Abstract: A self-locking bolt assembly (1) includes a split bolt (2) and a screw set pin (3). The bolt includes a threaded shank (4), an axial bore (6) extending through the shank, the bore (6) including a threaded bore section (6A), a tapered end section (6C), and a bore midsection (6B) between the threaded bore section and the tapered end section. The screw set pin (3) includes a screw section (10B) having threads for engaging the threaded bore section (6A) and a pin shaft (10) having a tapered end section (10A) for engaging the tapered end section (6C) of the bore (6), the pin shaft (10) having a proximal end attached to the screw section (10B). The pin shaft (10) is sufficiently long to ensure that the screw set pin (3) further into the bore (6) without galling threads of the screw section (10B).

Abstract: A drain plug for a threaded opening in a fluid container that is particularly suited for transom drains in recreational boats. The plug has an externally threaded cylindrical body with a central channel and transverse openings to permit fluid to flow from the central channel out of the body of the plug. One end of the plug is flared and has a plurality of longitudinal slots that will allow the radial compression of the end when the plug is screwed into a threaded opening. In one embodiment, the radial compression of the end of the flared plug is limited by a ring that fits in an annular groove in the interior of the body in the central channel. In another embodiment, the external threads are tapered near the handle to provide a tight seal when the drain is fully closed. Another embodiment provides an o-ring to seal the drain plug when the drain is closed.

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 self-locking bolt assembly (1) includes a split bolt (2) and a screw set pin (3). The bolt includes a threaded shank (4), an axial bore (6) extending through the shank, the bore (6) including a threaded bore section (6A), a tapered end section (6C), and a bore midsection (6B) between the threaded bore section and the tapered end section. The screw set pin(3) includes a screw section (10B) having threads for engaging the threaded bore section (6A) and a pin shaft (10) having a tapered end section (10A) for engaging the tapered end section (6C) of the bore (6), the pin shaft (10) having a proximal end attached to the screw section (10B). The pin shaft (10) is sufficiently long to ensure that the screw set pin (3) further into the bore (6) without galling threads of the screw section (10B).

Abstract: A device (2) for fixing bone sections separated because of a fracture comprises a plate (4) with bores (8) for the fastening to a bone, a plurality of internally hollow barrels (10), screwed in the bores (8) of the plate (4) and a plurality of compression screws (6) adapted to be screwed in the bone and then locked in the barrels (10).

Abstract: A steel bar joint includes at least one internally threaded sleeve and at least one externally threaded bolt that are screwed together to serially connect two steel bars to each other. The bolt is provided on at least one free end surface with equally spaced radial splits, and a spike dowel is located in an inner bottom of the sleeve to align a pointed bar of the spike dowel with a convergent hole of the radial splits on the free end surface of the bolt. When the bolt is fully screwed to the inner bottom of the sleeve, the pointed bar of the spike dowel is forced into the convergent hole on the bolt to expand open the radial splits, so that the free end of the bolt is tightly located in the sleeve to effectively prevent the whole steel bar joint from shaking or loosening.

Abstract: A drop-in anchor includes a sleeve having a threaded region having an internal thread formed therein and a split region having at least two longitudinal channels formed therein. The channels define sections. The split region has inwardly tapered inner walls. A plug is configured for engagement with the sleeve at the split region. The plug has a top surface and defines a tapered shape. A bolt having a threaded portion and a through-bore extending longitudinally therethrough, is configured for threaded engagement with the sleeve threaded region. A setting member is configured for insertion into the bolt bore. The setting member engages the plug top surface and a force exerted on the setting member drives the plug into the sleeve split region so as to urge the split region sections axially outwardly. A method for securing the anchor in the opening in the structure is also disclosed.

Abstract: A fastener has male and female sections, each section having an elongate portion and a head with an outer diameter larger than that of the elongate portion. The elongate portion of the male section has external threads, and the elongate portion of the female section has internal threads for engaging the threads of the male section. The outer end of the male section is castellated and has a threaded cavity. The head of each of the sections receives a tool for tightening the sections together. The female section has a hole through the center of its head that aligns with the cavity in the castellated portion. A tapered, threaded lock screw is inserted into the hole and rotated to cause the threads to engage the cavity, the segments of the castellated portion deforming radially outward and causing a large normal force between the threads on the segments and the threads of the female section.

Abstract: A fastener has male and female sections, each section having an elongate portion and a head with an outer diameter larger than that of the elongate portion. The elongate portion of the male section has external threads, and the elongate portion of the female section has internal threads for engaging the threads of the male section. The outer end of the male section is castellated and has a threaded cavity. The head of each of the sections receives a tool for tightening the sections together. The female section has a hole through the center of its head that aligns with the cavity in the castellated portion. A tapered, threaded lock screw is inserted into the hole and rotated to cause the threads to engage the cavity, the segments of the castellated portion deforming radially outward and causing a large normal force between the threads on the segments and the threads of the female section.

Abstract: A damper device includes a damper main body, and a grommet fixed to a fixing member. The damper main body includes a shaft portion having a plurality of engagement projection portions extending along a peripheral direction at predetermined intervals in an axial direction thereof. The grommet has a tube portion, an engaging device to be fixed to the fixing member formed outside the tube portion, and an elastic anchor piece disposed inside the tube portion to engage the engagement projection portions of the shaft portion pressed into the tube portion. When a stopper is formed outside the shaft portion and tightened to the grommet, the damper main body can be securely fixed to the grommet.

Abstract: This invention relates to an improved vehicle wheel hub and bearing retention system and method for producing the same, the vehicle wheel hub and bearing retention system including a wheel hub, a bearing unit, and a bearing retention and preload device. The wheel hub includes an inboard end, an outboard end, and a main body. The bearing unit is provided onto a bearing seat of the wheel hub. The material of the inboard end of the wheel hub is re-shaped against the bearing retention and preload device to thereby secure the device on the wheel hub and prevent axial and radial movement of said device relative to the wheel hub.

Abstract: An anti-rotational fastening system consisting of a primary bolt or screw that is fabricated with an axial passage at the center of the drive head extending through the entire length. The threaded end has a tapered counterbore that is sectioned to provide radially expandable segments. The segments expand by means of an internally threaded conical shaped lock pin that is drawn into the tapered counterbore of the primary fastener by clockwise rotation of a secondary threaded device positioned in the axial passage. As these segments expand, clearance is reduced between the external threads of the primary member and the internal threads of the tapped hole or nut of the bolted connection. Frictional resistance to rotation is increased as the clearance between the threads decrease. The friction increases to a point where the fastening system is locked and resists all but deliberate loosening of the bolted connection.

Abstract: An insert assembly for installation in a workpiece having a threaded hole. When the inner insert is axially received within the outer insert, the mating surfaces of these members are configured such that the inner insert applies a radial outward force to the outer insert to securely install the insert assembly in the workpiece. A stud assembly also is provided for installation in the workpiece hole. The stud assembly comprises a stud body and a stud. When the stud is axially received within the stud body, the mating surfaces of these members, like the insert assembly, are configured such that the stud applies a radial outward force to the stud body to securely install the stud assembly in the workpiece. Both the insert assembly and stud assembly are particularly adapted for use with workpieces made of relatively soft or lightweight materials.

Abstract: A locking bolt consists of a main bolt with a through hole extending axially along its center line, a deforming bolt rotatably mounted in the through hole in the main bolt, and a nut which is screwed onto the end of the deforming bolt. At least one slit is provided in the end of the shaft of the main bolt, and when the nut is tightened the deforming bolt expands the end portion of the shaft of the main bolt. At the end of the shaft the through hole in the main bolt is provided with a tapered hole portion of which the diameter decreases gradually from the tip of the shaft toward the head of the main bolt, and the head of the deforming bolt is tapered so that it fits into the tapered hole portion. When the nut is tightened, the deforming bolt jams the thread on the end portion of the shaft of the bolt against the thread of the bolt hole, and thereby prevents the bolt from becoming loose.

Abstract: A locking bolt assembly that prevents the release of loose parts in the event of bolt failure. A bolt having a head and threaded main body portion is provided with a central bore through the head and main body portion. The central bore has a necked down area adjacent the end of the main body portion away from the head. A plurality of slots along the end of the main body portion in communication with the central bore form bolt fingers around the necked down area. A plunger slidably received in the central bore places radial pressure at the necked down area to expand the bolt fingers outwardly and lock the bolt in its installed position without changing the preload of the installed bolt. The plunger is retained in its bolt locking position and prevents the release of loose parts in the event of bolt failure.

Abstract: To prevent relative turning between elements which are to be in threaded engagement with one another, one of the elements is provided with a recess and the other element with a non-circular through hole. When the two elements have been joined and brought into their intended relative positions, a locking element, having a cross-section conforming to the through hole, is inserted through the through hole and forced into the recess, deforming the material surrounding the recess, thereby locking the two elements against relative turning. The locking element can be a part of a tool used to rotate the element having the through hole when the elements are joined together. After the locking element is forced into the recess, the excess portion of the tool, extending beyond the element having the through hole, can be cut off or otherwise removed.