Abstract: A liveload assembly for communicating a load to packing material through a flange member of a fluid flow apparatus while pre-stressing a stud holding the flange member with a different loading, in which a first set of compressible belleville washers are received on an open-ended sleeve of a stack guide and rest on a seat defined by a flange at one end of the sleeve, the stack guide and washers received into a recess of a retainer cup having a partially closed end which defines a threaded bore for threadingly engaging the retainer cup to a stud extending from the stuffing box and freely through a gland follower, whereby the first set of belleville washers, being compressed, communicate a load through the flange member to the packing material. A second set of belleville washers are received on the stud and rest on a beveled face of the retainer cap. A nut screwed onto the stud compresses the second set of belleville washers against the beveled face of the retainer cup for pre-stressing the stud.

Abstract: A clip is installable on the edge area of a panel to assume a tight or floating condition centered on a fastener hole in the panel. The clip includes at least one prong or similar gripper mechanism designed to hold the clip-panel in place on a fastener while the fastener is being tightened. The clip further includes a pressure limiting mechanism for limiting the pressure exerted by the clip walls on the panel when the fastener is in its final tightened position. The clip can also be used as a fastener means.

Abstract: A loop-striker for use with a door latch of the type having (1) a bell-shaped mouth for receiving a complimentary wedge-shaped crossbar and a leading leg of the striker, and (2) a rotateable fork-bolt having a throat that traps the leading leg when the fork-bolt is in the latched condition. The striker is constructed such that the wedge-shaped crossbar can pivot about its leading leg so as to be self-aligning with respect to said mouth.

Abstract: A stress plate for use with a threaded fastener for securing relatively soft insulation to a solid base, such as in a roofing environment, includes a generally planar main body, and a hole on the main body configured for receiving the fastener. The plate is configured so that the hole is angled relative to a vertical axis of the plate for accommodating threads of the fastener so that the fastener is maintained in a generally perpendicular orientation to the main body upon the engagement of the threads of the fastener in the hole. In the preferred embodiment, the threads of the fastener have a helix angle, and the hole, which is formed in a conical depression in the plate, is angled at the same angle as the threads of the fastener.

Abstract: An object engaging mechanism includes a screw-fitting clip and a tapping screw to which said screw-fitting clip is to be fitted. The screw-fitting clip includes a plurality of elastic engaging claws protruding radially from an edge of a center hole of an annular disk at an inclined angle relative to a surface of the annular disk, and a plurality of protruding pieces arranged on an outer peripheral portion of the annular disk and extending away from the annular disk on a same side as the elastic engaging claws. The tapping screw comprises a plurality of ridges and has a thread profile such that a first side of the ridges facing a shank end of the tapping screw is an outwardly convex curved flank, and a second side of the ridges is a gently inwardly concave curved flank.

Abstract: An adhesive bonded nutplate assembly is provided for mounting onto a substrate, particularly such as a composite substrate having an opening therein for passage of a fastener such as a bolt or screw. The nutplate assembly includes an integral liner sleeve to project through the substrate opening when the nutplate assembly is mounted thereon. An installation tool includes a tapered nose in combination with a pulling mandrel to pull and separate a fixture pin from the nutplate assembly while flaring a leading edge of the liner sleeve to lock the nutplate assembly in place.

Abstract: A connecting device of the invention is used to connect two members together. The connecting device is formed of a base flange, a support column extending downwardly from the base flange, and elastically deformable engaging members formed at both lateral sides of the support column and projecting from the base flange. The support column has first and second side edges, and the lateral sides extending between the first and second side edges. The distance between the first and second side edges is greater than that between the lateral sides. The first side edge is cut diagonally from a longitudinal middle portion of the support column to a lower end portion of the support column, and the second side edge is cut diagonally from near a top of the support column to the lower end portion. The engaging members have lower ends terminating at and joining with the lower end portion.

Abstract: A V-nail fastener has a leading edge that is partially formed with asymmetric sharpening, limited substantially to the central sections. Flange elements extend generally perpendicularly to the panel elements of which the central (V-shaped) portion is constructed and cooperate therewith to give the fastener a W-shaped overall profile. The lateral sections of the leading edge, which extend along the flange elements, are substantially devoid of sharpening, or are otherwise so formed as to permit the directional influence of the asymmetric sharpening to occur substantially undiminished.

Abstract: A machine screw has a recess in its body extending from the threaded end into the body. The recess intersects the threads. A tang slot extends across the end of the machine screw body. A locking member is in the recess and the tang of the locking member is in the tang slot. The locking member includes a spring which extends into the thread space so that, when the machine screw is screwed into a threaded part, the spring is deflected by the threaded part to releasably lock the machine screw in place.

Abstract: An expanding wall plug including a headed anchoring socket adapted for mounting in a hole in a wall; a screw inserted through the anchoring socket and having a head received in a tapered hole at one end of the anchoring socket, an expansion shell mounted around the screw and abutted against the anchoring socket, having two wedge blocks and an outer thread or ribs at two opposite ends for anchoring, and two opposite longitudinal slots at one end, and a conical tightening up device mounted around the screw rod and forced forwards to squeeze the locating expansion shell against the anchoring socket axially upon rotary motion of the screw rod, the conical tightening up device having two wedge blocks symmetrically raised from the periphery and respectively forced into the longitudinal slots of the locating expansion shell.

Abstract: A fastener assembly for permanently securing together a pair of mating panels having aligned apertures therethrough including a bolt having an enlarged head at one end, a threaded shaft portion at the other end and an integral main body portion interconnecting the head and the shaft portion, a split ring bushing encircling the bolt, a first nut threadably mounted on the bolt having deformable protrusions thereon and a second nut threadably mounted on first nut also having first deformable protrusions thereon, both sets of protrusions being deformable at a predetermined load thereon into the threads of the bolt and the first nut respectively, the first nut being forced against the bushing when threaded on the bolt and the second nut abutting against an underside of one of the panels when threaded on the first nut thereby providing a mechanical lock between the deformed protrusions and the mating threads permanently locking the panels together.

Abstract: A carton closure apparatus releasably and securely closes a carton having a rectangular bottom, four side walls, two minor top flaps connected to the shorter two walls, and two major top flaps connected to the longer two walls. The apparatus has two parts. The first part is an insert that has a planar surface and a latching member that extends away from and at a right angle to the planar surface. The second part is a socket that has a receiving member for releasably and securely engaging the latching member of the insert. The socket is attached to one of the shorter side walls of the carton at a point along the top edge and equidistant from the adjoining side walls. When the two major top flaps are folded over the two minor top flaps and the insert is placed into the socket with the insert's planar surface extending over a portion of each of the major top flaps, the carton is releasably and securely closed.

Abstract: A nail with spreadable legs has legs that can be spread apart by a constant angle irrespective of the hardness of the ALC material into which the nail is driven. The nail has two leg members bound together by a washer with their flat sides abutting each other. One of the leg members has a protrusion on its respective flat surface near its tip. A projection and a recess are formed on the flat surfaces of the respective leg members. With the leg members bound by the washer, the projection engages in the recess near the washer. When the nail is driven in to a predetermined depth, the projection disengages from the recess, so that the legs begin to spread apart. It is thus possible to control the spread angle of the leg members.

Abstract: The self-locking nut comprises an hexagonal outer case (10) having front and rear open faces, and a set of cup-shaped or tapered spring members (14a, 14b) having threaded bores (17) axially aligned with the front and rear openings of the case (10). At least one of the tapered spring members (14a) has side edges (18) inwardly rounded and is provided with deflection legs (19) which extend outwardly to engage the internal corners between the side walls (11) of the case (10). A braking washer (20) may be optionally provided inside the case (10) to prevent the reverse rotation of the nut caused external stresses; the braking washer (20) is provided with a large central hole (21) having inwardly extending protrusion (22) ending in correspondence of the average diameter of the thread (17) of the spring members (14a, 14b) of the nut.

Abstract: A threaded fastener and a method by which the fastener exhibits sufficiently enhanced fatigue strength so as to be suitable for use in gas compressors and turbines operating at relatively high service temperatures. The method entails a selective heat treatment to achieve a dramatic improvement in fatigue properties while not interfering with other required properties for the fastener. The heat treatment process preferentially develops a case-hardened region in those threads nearest a transition region between the threads and an unthreaded portion of the fastener. In contrast, the unthreaded portion and the threads furthest from the transition region need not be case-hardened. The hardening pattern in the threads yields a martensitic steel fastener that exhibits fatigue properties which are dramatically superior to otherwise identical fasteners.

Abstract: A screw-nut fastener assembly in which a nut member is welded onto the head of a screw member having a variety of drive means, such as a straight slot, a cross recess drive or other suitable drive means.

Abstract: A method and apparatus are disclosed for joining a plastic insert or component to a plastic base having a recess therein. The component is provided with integral projections thereon that are separated from one another by spaces. The component is inserted into the recess with the projections force-fitted against the plastic base. The plastic of projections is caused to flow into the spaces, and the plastic of the base is caused to flow into the spaces where the plastics are intermixed. Then, the flowed, intermixed plastics are brought back into a solid condition with spaces now filled with solid, intermixed plastics that interlock the components to the base against rotation relative to one another and to prevent them from being pulled apart. The preferred projections are spaced in rows and have inclined sidewalls extending outwardly to small, cross-sectional, free ends for rapidly melting and flowing into the spaces.

Abstract: A tamper proof threaded fastener construction (10) comprising a conventional elongated threaded fastener body member (20) having an enlarged head member (30) provided with a contoured and tapered frangible member (40) which is used to drive the fastener construction (10) in a rotatable fashion, and when the frangible member (40) is removed leaves an irregular surface (45) which prevents the fastener construction (10) from being rotatably driven in any direction.

Abstract: A connection apparatus utilizes a structural element made of fusible material supported directly in the connection load path of the device. A carrier mechanism is axially translatably supported in the device and utilizes a connecting member to connect two desired structures. The connection mechanism engages and holds the connecting member in a first axial position. In one embodiment, the connection mechanism releases the connecting member when translated to a second axial position. In another embodiment the connection mechanism tensions the connection when translated to the a second axial position. The fusible member is heated to transition from solid to liquid. In the liquid state, the fusible member no longer opposed axial load on the carrier mechanism. The fusible alloy comprises a low melting temperature alloy, such as bismuth-lead or bismuth-tin.

Abstract: A self-locking internally threaded nut has a deltoid shaped locking section having circumferentially spaced protrusions. The protrusions form a surface adapted to be engaged by a deltoid driver which tightens the nut onto a bolt to a predetermined axial load. At the predetermined load the protrusions are plastically deformed inwardly on the nut so that the driver rotates freely on the nut. When the protrusions are inwardly deformed, the deformed material impinges on the bolt, thereby rotationally locking the nut on the bolt.