Abstract: A sealable fastener for insertion into an fastener opening in a receiving structure includes a fastener shank with a shank first end having a shank first end wall and a shank second end having a shank second end wall, a shank side wall extending between the shank first end wall and the shank second end wall and a circumferential channel recessed into the shank side wall; and a sealant delivery groove in the shank side wall having a delivery groove entry port in the shank second end and extending to a delivery groove exit port opening into the circumferential channel; so that a flowable sealant placed in the fastener opening is drivable into the sealant delivery groove and around the circumferential channel as the fastener shank is inserted into the fastener opening, creating a circumferential seal between the fastener shank and the receiving structure fastener opening.

Abstract: A fastening assembly is provided. The fastening assembly includes provision for a stud to be positioned in a plurality of predetermined extended positions, minimizing the amount of clearance required for removing a cover from a substructure.

Abstract: A piering device includes a shaft having interspaced threaded portions and unthreaded portions extending axially along at least a portion of its length. The unthreaded portions of the shaft are radially recessed with respect to the threaded portions. A helical plate with a threaded passageway can engage the threaded portions of the shaft at any desired location along the shaft. A key is then inserted into the passageway between the helical plate and an unthreaded portion of the shaft to hold the helical plate at the desired location on the shaft.

Abstract: A piering device includes a shaft having a polygonal cross-section with a series of notches spaced at intervals along the vertices of the shaft. For example, the shaft can have a square cross-section with rounded corners. The helical plate has a passageway with a cross-section to slide along the shaft when the helical plate is in a first rotational position on the shaft. However, notches within the passageway of the helical plate engage the notches on the shaft when the helical plate is rotated to a second rotational position, thereby preventing the helical plate from sliding along the shaft. A key is inserted between the shaft and helical plate to hold the helical plate in the second rotational position and thereby fix the axial position of the helical plate on the shaft.

Abstract: The present invention provides a mounting system for components in the housing of a computer server. The mounting system is preferably a height-adjustable thumb screw assembly, which allows for the components to be installed or removed without the use of tools. In a preferred embodiment, a thumb screw assembly capable of securing components to a chassis includes a screw and a gripping accessory. The screw preferably has a threaded portion, a shank portion, and a head portion, wherein a first groove extends along the shank portion and a second groove intersects the first groove under the head portion. The gripping accessory preferably has an outer gripping surface, a retaining socket, and a hub, wherein a grip is positioned inside the hub for matingly engaging the grooves of the screw.

Abstract: A self-tapping threaded insert (20) for threadedly mounting another component by a threaded central connector (50). An assembly (24) of the insert (20) and a mounting member (22) for threadedly mounting the insert are assembled by a method for mounting the self-tapping threaded insert. The insert (20) has a threaded shank (26) that is threaded into a partially tapped hole and has a shank end with flutes (32) of a construction that provides self-tapping. Upon final torquing, a locking flange (42) of the insert (20) locks against a surface (46) of the member (22) as threads of the insert shank (26) are completely engaged with the hole.

Abstract: Described herein is a self-threading screw, designed to be inserted in a hole of appropriate size made in a sheet of metal (or other metallic body), which has at the free end of its shank six projections (“formers” or “shapers”) of prismatic shape designed to thread by rolling the wall of the hole in which the screw itself is inserted.

Abstract: A splined shaft head for engaging a splined hub includes first, second and third stages. The first stage has a conical taper on one side, and a cylindrical setback on the other side, which transitions through a tapered shoulder to the cylindrical body of the shaft head. The second stage includes lead spline teeth extending along the cylindrical body to the conical taper. The third stage includes torque-transmitting main spline teeth regularly arranged around the circumference. The shaft head is rotated while being inserted axially into the hub. The first stage allows radial free play and de-centering of the hub so the lead spline teeth find a proper rotational alignment with spline grooves of the hub. Then, the tapered shoulder at the end of the first stage positively centers the hub on the shaft axis, and finally the main spline teeth of the third stage provide full form-locking engagement.

Abstract: A fastener comprises a main body having a number of spaced ridges formed on an outer periphery thereof. The ridges are arranged along a helix. At least one of the ridges has a retainer extending in a direction that is at an angle with an extending direction of the ridge. In another embodiment, a fastener comprises a main body having a number of spaced ridges formed on an outer periphery thereof. Each ridge extends along a direction that is parallel to a longitudinal direction of the main body. At least one of the ridges has a retainer extending in a direction that is at an angle with an extending direction of the ridge.

Abstract: A screw includes a shank portion and a head portion on one end of the shank portion. The shank portion has a continuous spiral screw thread with a plurality of turns formed thereon. The screw thread has an upper thread surface, a lower thread surface, and a cutting line that interconnects the upper and lower thread surfaces at a radial edge of the upper and lower thread surfaces distal to the shank portion. Each of at least some of the turns of the screw thread is formed with from two to six adjacent concave facets along the cutting line. Each of the concave facets has a radial width ranging from about 60 to 120 degrees. Each pair of the adjacent concave facets forms a pointed corner at the cutting line.

Abstract: The object of the present invention is to prevent the encroaching and the seizure between the bolt and the female screw caused by an oblique screwing of the bolt into the female screw when the bolt and the female screw are fastened together. Another object of the present invention is to manufacture the bolt in a low cost, by using said bolt, the encroaching and the seizure between the bolt and the female screw caused by a oblique screwing of the bolt into the female screw are certainly prevented. Said objects may be attained by a bolt consisting of a column part and a polygonal pillar part extending from an end of said column part wherein a complete thread is formed on said column part and a screw blade continuing to said complete thread is formed on said polygonal pillar part.

Abstract: An improved anchor device or fastening member which is particularly suited for use in the attachment of various fixtures and equipment to masonry, concrete, and other hard and/or friable substrates includes a head and a shank depending therefrom. The shank has a first threaded portion having a predetermined thread angle and a predetermined hardness, and a second threaded portion having a predetermined thread angle and a predetermined hardness. The first threaded portion is proximate to the head and the second threaded portion extends from the first threaded portion. The thread angle of the first threaded portion is different than the thread angle of the second threaded portion. In addition, the hardness of the first threaded portion is softer than the hardness of the second threaded portion. This provides for a more ductile anchorage when the fastening member is engaged with the substrate.

Abstract: Locking arrangement for a movable vehicle body part. For adjusting an engine hood relative to the stationary vehicle body parts, it is known from prior art to fasten a lock top part by means of washers to the engine hood in such a manner that, when the engine hood is closed and therefore in the case of a connection of the lock top part with the lock bottom part, a precise fit of the engine hood is achieved. According to the invention, the catch bow is held on the assigned vehicle body part by means of a continuous linear adjusting device.

Abstract: A novel drive system includes a body, such as a threaded fastener body or a drive tool body, a tapered transitional portion at an end of the body, and a drive head at the end of the transitional portion, such that the transitional portion is between the drive head and the body. The transitional portion has structure thereon, such as a plurality of alternating curved lobes and flutes, for engagement with a corresponding socket. At least a portion of the lobes are threaded in the transitional portion. The drive head also has structure thereon for engagement with the socket, such as a plurality of alternating curved lobes and flutes. The flutes on the transitional portion are axially aligned with the flutes on the drive head and the lobes on the transitional portion are axially aligned with the lobes on the drive head.

Abstract: A screw with two cut removing curved grooves has a head and a shank with a helical threads. The shank has two lengthwise grooves partially overlapping with each other, when viewed projectively from the horizontal surface or from the vertical surface of the center line or axis of the screw.

Abstract: The spacer screw has a first thread section (1) which can be screwed into a base element, a head section (3) which can be introduced into the construction element, a shank section (2) formed between the head section and the first thread section and a recess for the insertion of a tool. A second thread section (4), is additionally formed between the anchoring section and the shank section and has the same core diameter as the anchoring section (6). When using the spacer screw the head section (3) is drawn into the construction element by the second thread section (4) independently of the turning in of the first thread section (1), so that on the one hand the adjustment of the spacing between the base element and the construction element can take place without special measures and, on the other hand, the screw can be used independently of the differences in strength of the base element and the construction element.

Abstract: The anchor bolt comprises a generally hollow body (1) with a drilling end (4), a supporting collar (5) at the other end and an external screw thread (6). The collar (5) forms two openings (10, 11), diametrically opposed, for receiving an anti-rotation pin (8, 9) removably fixed to the collar (5) and movable in the opening (10, 11). The pins (8, 9) are intended to anchor both in the collar (5) and in the receiving material, in order to prevent rotation of the bolt.

Abstract: A fastener for securing a first component to a second component in a device is disclosed. The fastener includes an elongated body and a head. The elongated body has a portion thereof having a cross section perpendicular to a longitudinal axis of the body. The portion of the body has an arcuate connecting surface on an external periphery thereof. The body cooperates with the first component to permit the portion of the body to freely pass through a first component opening in the first component. The body cooperates with the second component to permit the portion of the body to freely pass through a second component opening in the second component when the body is oriented in a first position with respect to the second component opening. The body cooperates with the second component to permit the arcuate connecting surface to engage with the second component when the body is oriented in a second position with respect to the second component opening. The head is attached to one end of the elongated body.

Abstract: A self-tapping screw with improved cutting point includes a head, a screw body, a double cutting point, and a washer. A first thread and a second thread are formed on the screw body. The second thread has the same pitch as the first thread and is formed between the first thread. The second thread has a major diameter which is less than the major diameter of the first thread. The first thread starts at substantially a shoulder and continues to a point of the screw body The second thread starts at substantially the shoulder and continues to the point of the screw body. The shoulder is formed on a bottom of the head. A washer preferably metal with rubber vulcanized thereon is placed under the shoulder of the head. The rubber seals the hole created by the self-tapping screw with improved cutting point. A notch may be included to improve the deburring and drilling ability thereof.

Abstract: A screw includes a straight portion and a cutting screw-in portion tapered toward a pointed end. A cutting thread is provided on the tapered screw-in portion. The cutting thread has several cutting teeth spaced apart thereon, and connects threads of the straight portion. Each of the cutting teeth has a sawtooth like shape and is sloping at an angle. The cutting teeth can cut the wood into relatively small bits on the contact with it when the screw is being screwed into the wood, and drive part of the bits out of the hole of the wood to prevent the wood from being cracked. The cutting teeth can help the screw to be screwed into the wood with relatively great speed and small resistance.

Abstract: The spacer screw has a thread section which can be inserted into a base member, a head section which can be introduced into a structural member and has a thread, and a shank section arranged in between. According to the invention, the thread is provided with a series of slits which in turn is formed from recesses running transversely to the screw axis and interrupting the thread turn at constant distances. When the screw is used, the thread is screwed into the structural member, which, in contrast to the use of known screws, is effected without excessive force. In addition, this screwing-in process takes place independently of the screwing of the thread section into the base member. When the thread section is screwed into the base member and when the head section is screwed into the structural member, the slit-like recesses do in fact generate a draw-in resistance, the draw-through force of the thread of the head section being reduced by the magnitude of said draw-in resistance.

Abstract: A self tapping screw with improved cutting point includes a head, a screw body, a double cutting point, and a washer. A first thread and a second thread are formed on the screw body. The second thread has the same pitch as the first thread and is formed between the first thread. The second thread has a major diameter which is less than the major diameter of the first thread. The first thread starts at substantially a shoulder and continues to a point of the screw body. The second thread starts at substantially the shoulder and continues to the point of the screw body. The shoulder is formed on a bottom of the head. A washer is placed under the shoulder of the head. The rubber washer seals the hole created by the self-tapping screw with improved cutting point. A notch may be included to improve the deburring and drilling ability thereof.

Abstract: A fastener includes a threaded post and a nut formed with an internal threaded portion for threading onto the rod. A slot formed longitudinally in the post interrupts the threads and that is sized to slidably receive the threaded portion of the nut such that the nut slides freely along the length of the post. The nut is secured by sliding the nut onto the post until reaching a desired position, and then rotating the nut such that the threaded portion of the nut engages the threads formed on the post. The nut is secured into the desired position with an integrally formed locking tab that extends into the slot after the nut has been rotated onto the shank.

Abstract: The present invention envisions a fastener and a blank for forming a fastener. Threads are formed on the fastener blank of the present invention to achieve the fastener of the present invention. The fastener and blank include a shank which defines a central axis of the fastener. A head is provided on one end of the shank and a leading end is provided on an opposite end of the shank distal the head. A plurality of lobes are provided on the shank and are generally axially aligned with the central axis. Flutes are defined between neighboring lobes. The plurality of lobes include at least three major lobes and three minor lobes. The major lobes are defined by a major arc which is struck by a major radius. The minor lobes are defined by a minor arc struck by a minor radius. The major and minor radii extend from different radial points of origin.

Abstract: A self retaining fastener which comprises a threaded bolt with an hexagonal head and threaded shaft with a longitudinal groove formed therein. An arcuate spring member is secured in the groove and protrudes slightly outward from the threaded shaft of the bolt to provide frictional force against the inner surface of a bore. A further embodiment of the invention provides a threaded shaft cut into segments by one or more diametrical slots. The segmented portion of the shaft is biased outward to a diameter slightly greater than that of the unsegmented portion, providing resilient frictional force when inserted into an appropriately sized bore.

Abstract: A pilot screw has a head, a shank beneath the head, a tapered tip at the end of the shank, and a spiral thread surrounding the shank. A large number of spaced auxiliary threads are disposed on the tapered portion of the head. A large number of spaced secondary threads are disposed on the shank between the pitches, and plural cutting gaps are formed at the end area of the spiral thread.

Abstract: A spinal implant including a hollow, generally tubular shell having an exterior lateral surface, a leading end, and a trailing end. The shell has a helical thread projecting from its exterior surface. The thread includes a plurality of pillars. Each pillar has a height of 100-4500 microns and a lateral dimension at the widest point of 100-4500 microns. The exterior surface has a plurality of holes therethrough to permit bone growth therethrough. The spinal implant may alternatively have a plurality of pillars projecting from its exterior surface in a regular, non-helical array.

Abstract: The retainer pin includes a plurality of longitudinal rows of radially extending wings about a circumference of a shank. The radially extending wings within any one row are longitudinally offset from longitudinally adjacent wings by a pitch. The wings of circumferentially adjacent rows are offset by a distance equal to one half of the pitch thereby forming a double helix. The double helix configuration of the radially extending wings creates a screw-like configuration which is used to engage a partially threaded aperture.

Abstract: A self-tapping screw has a thread shaft having a leading end, a wood screw thread provided on the thread shaft and having a plurality of turns, and milling profiles formed on the turns of the wood screw thread and spaced from one another in an axial direction, the milling profiles becoming smaller the further away the milling profiles are from the leading end, some thread turns at a head end of the thread shaft being free of milling profiles.

Abstract: The device has a mounting frame with a nut housing, into which a threaded rod is inserted. The threaded rod has interrupted teeth and meshes with a nut, which likewise has interrupted teeth. An adjustable carrier, with which the threaded rod can be detachably fixed at each depth of insertion, is arranged behind the nut. A time-consuming screwing in and out of the threaded rod as well as fixing with a lock nut are avoided.

Abstract: A tapping screw engages a member to be engaged with a base plate made of metal by tapping a burring hole formed on the base plate. The tapping screw includes a main body having a shank and a head formed at a base end of the shank. A reduced diameter shank portion extends from a fore end portion of the shank of the main body, and has a taper angle .theta. of 9.degree. to 14.degree. and a substantially rounded triangle shaped cross-section. Recesses having no thread are formed at three faces of the reduced diameter shank portion so that a circumferential width of each recess is gradually reduced toward a tip end of the reduced diameter shank portion. Each recess is formed by a steep face facing a screwing direction of the tapping screw and a gentle face oppositely facing the steep face to form a groove.

Abstract: A thread forming screw for concrete, masonry, rock, or similar material. The size ratios of various portions of the screw are defined to reduce thread engagement which, in turn, reduces screw-in torque. A burr in the screw's thread includes bow-shaped cutting teeth to facilitate screw-in.

Abstract: The shank portion of a screw, which is free of a drill bit portion and which is adapted for use with a fibrous board, has a surface that is formed with a screw thread throughout the length of the shank portion, and a lower section that is formed with a flute at the surface thereof. The flute extends from a tip of the shank portion and has a longitudinal length which is inclined with respect to a longitudinal axis of the shank portion.

Abstract: A fastener has a head and a shank with two ends. One of the ends includes the head while the other includes a pilot point. Also, the shank includes a threaded portion adjacent to the pilot point. A pair of recesses are formed 180.degree. from one another on the point and threaded portion. The recesses extend from the end of the point through at least a first full thread.

Abstract: A quick-connect bolt that can be inserted into a threaded receptacle without rotation and tightened with a minimum number of rotations.

Abstract: A threaded tubular fastener having an elongated central through-bore having engaging means for engaging said through-bore with a rotary device having a rotary driver, a generally cylindrical body having an external surface with a main external thread formed thereon with a plurality of slots, said thread being larger than the diameter of a pre-drilled hole in a first work piece and a second mating work piece wherein the said threaded tubular fastener is employed to fasten the first work piece to the second work piece.

Abstract: The invention relates to a member provided with an external screw thread, which at least in the end portion of the screw thread is provided with at least one plastic part for at least partially covering the same and/or at least partially replacing the same.

Abstract: A threaded bush having a cylindrical body provided with a female thread in an inner surface, a male thread in an outer surface, a plurality of triangular recessed stop grooves spaced equally in a lower sloping-down portion, each stop recessed groove formed with a vertical side wall and a curved side wall defining a small angle, the curved side wills guiding and cutting in a wall of a hole which this bush is to be screwed in, the vertical side wall cutting positively the wall of the hole, the triangular recessed stop grooves engaging uncut wall material of the hole to prevent this bush from loosening out of the hole.

Abstract: Sensitive rotating viscometers which include a head, rotor and stator, for example, a Brookfield viscometer, and have their head supported by a hollow housing and their stator held in place by the same hollow housing are improved by an internally threaded wall in a lower portion of the hollow support member, having means to exert guiding pressure on a means to accept pressure of a correspondingly, externally threaded nut, the correspondingly, externally threaded nut for attachment within the internally threaded wall, which threaded nut has an extension which is perforately slotted, the nut extension having the means to accept pressure, so as to cause the nut extension to be directed inwardly by tightening of the nut within the internally threaded wall, so as to cause snug contact between the lower interior surface of the hollow support member and the exterior cylindrical surface of the stator. The device may be embodied as a separable collar housing and stator/tube collar with such an aforesaid nut.

Abstract: A fastener has a head and a shank with two ends. One of the ends includes the head while the other includes a dog tip point. Also, the shank includes a threaded portion adjacent to the dog tip point. A pair of recesses are formed 180.degree. from one another flush with the point and on the threaded portion. The recesses are continuous with the point and extend through at least a first full thread.

Abstract: A threaded fastener has an eccentric tip with a smooth portion, a threaded portion and a cleaning recess formed into the threaded portion of the tip. The recess and tip are formed in the heading operation prior to rolling the threads onto the shank which provides better thread quality.

Abstract: An adjustable-height post (10) for construction formwork, which is preferably made of aluminum, consists of an outer tube (12) to which a threaded nut is fastened in a lossproof manner, and an inner tube (11) that has thread segments (13, 14) on the outer surface. The segments (13, 13', 13", 13'") project into recesses (19, 19', 19", 19'") of the outer tube (12). This embodiment produces a robust post (10) whose inner tube (11) is nonrotatably supported and guided in the outer tube (12). The inner tube (11) can more easily be manufactured with the threads (14) according to the invention; at the same time, material can be saved in the manufacture of the post (10).

Abstract: A fastener has a head and a shank with two ends. One of the ends includes the head while the other includes a pilot point. Also, the shank includes a threaded portion adjacent to the pilot point. A pair of recesses are formed 180.degree. from one another on the point and threaded portion. The recesses extend from the end of the point through at least a first full thread.

Abstract: This invention relates to a bolt having a tapered tip comprising of corresponding opposite flat and partially threaded portions that engage an oval nut having elongated internal adjacent sides, the ends of which are void of threads to enable bolt/nut alignment when initially inserted and tightened. Additionally, the tapered threaded bolt has an arcuate shaped or rounded first and/or second thread for providing self-alignment and preventing gouging or digging of internal threads when being inserted or screwed into any conventional nut or oval shaped nut. Moreover, inadvertent contact between the bolt and nut while in the process of initial insertion will not preclude uninhibited correct bolt insertion into the nut.

Abstract: A screw has a thread (3), whose front and rear flanks have a different angle with respect to the screw longitudinal axis. The screw tip (2) can contain a scraping groove (6), which extends as a notch in the screw longitudinal direction. In the front, conically tapering area of the screw the thread course is constructed symmetrically and extends up to the tip.

Abstract: An apparatus for mounting a shearing blade specifically for use in a cut-off die set of the type used to cut tubing continuously emanating from a mill. The present invention is directed toward the shearing blade assembly used in conjunction with the notching blade of the cut-off die set. The subject device includes a mounting block fixed to the upper platen of the die set, a shearing blade mounted in a shearing blade cartridge, and a locking stud rotatably mounted on the mounting block which threadably engages and secures the shearing blade cartridge to the mounting block.

Abstract: A threaded fastener in the form of a bolt or screw for recutting damaged threads during installation in a previously threaded bore or for cutting threads in a non-threaded bore. The fastener comprises a threaded shank terminating in a headed end and in a non-threaded frustro-conical lead-in end. A cavity is formed in the shank extending longitudinally from the first shank thread adjacent the frustro-conical lead-in shank end toward the headed shank end. The cavity comprises a slot of obround peripheral configuration having a planar bottom and a depth greater than the depth of the shank threads. At the end of the slot, nearest the lead-in end of the fastener, a radial bore is provided in the shank having a depth up to the longitudinal axis of the fastener shaft and a diameter equal to the diameter of the curved end of the obround slot. The trailing longitudinal edge of the slot comprises a thread cutting edge.

Abstract: A screw threaded insert adapted to be fitted in a bore of a workpiece made of thermoplastic material. The screw threaded insert is externally tapered at an angle of about four (4) degrees and is defined externally with a thread of approximately equal pitch and depth, and of saw toothed shape. The insert is also threaded internally for receiving a bolt. A pair of cutting slots is also provided.

Abstract: A tapping screw has a threaded shaft and a stepped drill bit portion including two or more drill portions having different diameters gradually decreasing toward the tip of the screw. The small-diameter drill portion has a larger drill angle than the large-diameter drill portion. The former firstly forms a starting hole and the latter expands it. Thus, less force is required to rotate the screw than a conventional tapping screw. Recesses are provided in the drill bit portion and have respective sides defined by cutting edges extending across only the portion of the thread closest to the tip of the tapping screw.

Abstract: This disclosure relates to the blade lock that serves to secure the blades to the drum rotor of a compressor in a gas turbine engine that is characterized by its ease of removal upon disassembly. The blade lock consists of two components, a locking member that engages the surface of a shoulder formed in the drum of the drum rotor and a screw threadably engaging a threaded central bore formed in the locking member having a platen engaging the bottom surface of the recess to urge the locking member to bear against the shoulder and where the screw carries three equally spaced longitudinal slots formed around the periphery of the threaded portion of the threads of the screw.