Abstract: A bolt includes a movable pin in the center thereof. This pin can freely move up and down in the bolt. If the pin protrudes out of bolt a predetermined distance after the bolt is screwed into a blind bolt hole, then an inspector knows that the bolt is fully engaged. If, on the other hand, the bolt is not fully engaged, the pin will not protrude the predetermined distance out of the bolt. A second embodiment of the similar invention is a stud having an indicator pin. In third and fourth embodiments, the bolts and studs have indicator pins including grease zerks. These grease zerks allow the holes to be filled with grease to prevent damage to the hole due to corrosion.

Abstract: A fastener assembly for installing valve devices and the like on one side of a mounting plate by bolts where the bolt holes are without threads and the opposite side of the mounting face is inaccessible for holding a bolt head or nut from turning. The fastener assembly includes at least one fastener plate and a minimum of two threaded bolts affixed thereto, so that the threaded portion of the bolts projects through bolt holes in the mounting plate. A retaining washer is threaded onto the projecting bolt threads to retain the fastener plate in place while the valve device is being installed onto the projecting bolt threads on which lock nuts are subsequently screwed to secure the installation.

Abstract: This invention allows to form a nitrided hard layer on the surface of an austenitic stainless steel screw by forming a nitrided layer thereon and to prevent causing rust on some parts such as a screw head portion which is in contact with the outside air by removing the nitrided hard layer to expose austenitic stainless steel base which has sufficient corrosion resistance. On the contrary, in a thread part and the like of the screw, the nitrided hard layer is left and to thereby improves hardness and the like to strengthen tapping functions and the like of the screw. In the method for manufacturing the austenitic stainless steel screw according to the invention, the austenitic stainless steel screw is held in a fluorine- or fluoride-containing gas atmosphere prior to nitriding to form a fluorided film on its surface and then is nitrided in that state. Accordingly, so formed nitrided hard layer becomes uniform and deep to obtain an austenitic stainless steel screw having excellent surface properties.

Abstract: A bolt, rivet or similar fastener for fastening separate structural parts has a shank, and a tubular cover member covering at least part of the periphery of the shank for preventing a stress from concentrating in part of the shank. The cover member is made of a material having greater deformability or greater elastic strain energy than the material constituting the shank or is made of a material having a relatively small coefficient of friction. When vibration or impact acts on the fastener, the cover member disperses the resulting stress to protect the shank against breakage.

Abstract: A surgical device for percutaneous connection of a fractured upper part of the femur to the shaft comprises: a connector plate with a lower straight portion for screwed connection to the femur shaft and with a sharp bottom end for insertion through a small skin incision, having its upper portion perforated by two oblique, tapped bores for fixation of two long screws serving for connection of the fractured parts. Each screw has a wood-screw-shaped inner end and a cylindrical shaft with a hexagonal recess at its outer end which is continued by a tapped bore. Each screw is slidingly positioned in a sleeve which has its outer end slotted and screw-threaded for fixation in the oblique bores of the plate.

Abstract: A fastener assembly for anchoring masonry to a wall support stud includes a sealing member releasably seated in a retaining groove. The fastener threads into the support stud and is affixed to a hole in the masonry with a bonding agent. The retaining groove holds the sealing member in place during the installation of the fastener, and a break-off groove enables the fastener to be severed inside the masonry. After the fastener has been severed, the sealing member can be relocated inside the masonry to a pre-determined sealing position, thereby insuring the use of a controlled volume of bonding agent.

Abstract: In a unit for mounting a primary insulator for power lines onto a pin, a threaded element has an inner diameter which decreases along the length of the threaded element from its top to bottom. The threaded element surrounds a portion of the pin, forming a gap defined by the outer peripheral surface of the pin and the inner diameter of the threaded element. An adhesive resinous material, such as epoxy, is permitted to cure within the gap and forms a strong bond with the pin, which may be metal or fiberglass. An interference fit, or interlock, is formed between the threaded element and the adhesive resinous material. The threaded element may be plastic, and a lubricating powder may be dispersed throughout the threaded element.

Abstract: Novel fastener assemblies self-conforming to contoured surface panels being fastened to support members and minimizing radar cross-section by providing a non-reflective surface shield component over the basic fastening component or bolt. The invention provides a method for reducing the amount of microwave radiation normally reflected back to its source by aircraft panel fasteners or bolts and/or by the recessed walls of bolt access openings at contoured surface areas. The invention comprises a novel fastener assembly of a threaded shield bolt engaged within a main fastening bolt, the shield bolt having a flexible, surface-conforming head of a metal alloy having high temperature stability properties.

Abstract: A tamper-proof, self activating nut lock apparatus comprises a threaded shank having an external screw thread of a first pitch and a coaxial threaded bore at one end of the threaded shank, with an internal screw thread of a second pitch, both the said external and internal screw threads having a same direction of rotation. A shank extension having the external pitch of the first pitch and a coaxial threaded projection of the second pitch is screwed into the threaded bore of the shank and a threaded nut is adapted to engage the external threads of the shank and the shank extension. A friction means, such as a nylon insert, is adapted to engage the shank extension and the threaded nut whereby reverse rotation of the nut to remove the nut from the shank without appropriate tools rotates the shank extension for jamming the nut on the threaded shank to prevent removal of the nut.

Abstract: Screw unit with a closing screw having a screw head for the aseptic closing of an internal thread of a member and an introduction post in firm, but detachable connection on the closing screw.The detachable connection is formed by a tongue in an end of the post being received in a slot in the screw head which slot terminates inward of a peripheral edge of the screw head.

Abstract: Squeaks in a floor or stair are eliminated by driving screws in the area. At least one scored screw to be driven into the squeak area combines with a specialized driving bit and a alignment and depth control fixture to eliminate the squeak. The alignment and depth control fixture can be used to direct the scored screw to the proper point while the driving bit can stop driving the screw at the desired position. After the alignment and depth control fixture is removed, the screw is broken at the prescored position. To minimize damage to an in place carpet, a tape is wrapped around the threads of the screw.

Abstract: At least one scored screw is driven into the squeak area with a specialized driving bit and an alignment and depth control fixture. The alignment and depth control fixture is used to direct the scored screw to the proper point into the floor so that the scored area is at or beneath the surface of the floor. The driving bit can stop driving the screw at the desired position. After the alignment and depth control fixture is removed, a gripping tool is used to apply force to the screw and break the screw at the prescored position. The barrel of the screw being left in the floor locks the floor or the step to the desired support. One screw or series of these screws in usually an arcuate or a radial fashion around the squeak area, can eliminate the squeak.

Abstract: A locknut including a body having a stud receiving inner surface and an outer surface having a ridge with a shoulder and a cylindrical portion next to the shoulder, an O-ring mounted on the cylindrical portion, a shroud having a cylindrical portion which overlies the cylindrical portion of the nut and engages the O-ring on the cylindrical portion of the nut and conceals it when a shoulder on the cylindrical portion of the shroud is in engagement with the shoulder on the ridge of the nut. The cylindrical portion of the nut has an axial length which is greater than the cylindrical portion of the shroud so that the end of the nut protrudes beyond the end of the shroud when the above-mentioned shoulders are in engagement. A bolt having a head containing structure such as described above relative to the locknut.

Abstract: A reinforcing fitting which widely distributes lateral stresses applied to wood members at the location where the wood is bolted to another member. The connection may be a wood member bolted to concrete, or bolted to steel, or two or more wood members bolted to one another. The fitting is generally comprised of a cylindrical metal tubular member having substantial wall thickness and a smooth-walled central bore in which an appropriately sized bolt shank may be positioned. A first or top end of the tubular member is affixed with a metal plate having a multiple of spikes projecting downward from the bottom surface of the plate. The tubular member is structured for insertion into a pre-drilled circular hole in a wood member, with a second or bottom end of the tubular member extending just short of the opposite side of the wood.

Abstract: An attractive, sturdy revolving shelf unit which provides for efficient storage space for books, magazines, or wine bottles etc. Each shelf is characterized by an L-patterned arrangement of vertical supports between shelves which permit efficient storage and provide strength. Methods employed in manufacturing the storage units provide for easy adaptation to different sizes of the storage unit and variation in the size of the L-pattern to accommodate different storage items.

Abstract: A centrifuge rotor lid assembly which includes a handle which allows convenient handling of a centrifuge rotor and facilitates releasing the lid from the rotor after centrifugation. In one embodiment, the lid is provided with a lid knob and a spindle knob in a coaxial sliding arrangement. The lid knob is used to tighten the lid on the rotor body and the spindle knob is used to tighten the rotor to the centrifuge drive spindle. The upper end of the inner knob is provided with a handle which extends perpendicular to the axis of the knob. This handle is used for lifting the rotor after the spindle knob has been unscrewed from the spindle and for unscrewing the lid knob. The lower end of the spindle knob has a pin which cooperatively engages the lower end of the lid knob when the spindle knob is lifted from the rotor and is turned in a direction to unscrew the lid knob.

Abstract: A spacing bolt assembly for securing to a surface includes a cylindrical inner bolt portion having a first end with external threads in a first direction and a second end with a head structure, an outer bolt portion having an axial bore for receiving the inner bolt portion and having a first end with external threads in a second direction and having a second end, and an aperture in the surface containing a central bore segment sized and threaded in the first direction to receive the first end of the inner bolt portion and a counterbore segment sized and threaded in the second direction to receive the first end of the outer bolt portion, so that the outer bolt portion can be screwed into the counterbore segment to a depth leaving a desired exposed length of the outer bolt portion protruding, and the inner bolt portion can be inserted through the axial bore and screwed into the central bore segment until the inner bolt portion head structure abuts and engages with friction the second end of the outer bolt porti

Abstract: A fastener system is provided for securing a component to supporting structure. The fastener system comprises a pair of cooperating fastener modules. The first module includes a first stationary member attached to the supporting structure and a first bolt member threadedly engaged with the first stationary member. The second module includes a second stationary member also attached to the supporting structure and a second bolt member threadedly engaged with the second stationary member. The second bolt member also extends freely through a longitudinal bore in the first bolt member. Head members on the first and second head members are mutually engaged for their unitary rotation and the first head member engages the component. When the head members are rotated in one direction, they are advanced toward the supporting structure thereby drawing the component toward the supporting structure.

Abstract: A self-retaining adjustable diameter bolt assembly including a bolt having a head, a shank, and a threaded end adapted to be inserted into aligned holes in a pair of abutting panels for subsequent coupling to a nut on the blind side of the panels. The bolt includes a pawl engaging one side of the panel in which the bolt is inserted with the head thereof on the opposite side of the panels. A plurality of bushing segments are mounted on the bolt shank, the pawl extending through an opening in the segment adjacent the threaded end of the bolt shank and retained therein by engagement with a slot through the segment while simultaneously being oriented in an operative position therein. A nut, having a skirt portion, is threaded onto the threaded end driving the segments forward and filling the spacing between the holes and the bolt shank. The skirt portion of the nut overlies the pawl and protects the same.

Abstract: An improved elbow used to attach accessories such as stabilizers to archery bows is disclosed. The elbow comprises: an extended arm having a threaded-end capable of being attached to the bow (facilitated in the preferred embodiment by a nut) with the other end having a spherical bevel surmounted by a flat-portion, a saddle shaped wrist capable of receiving the threaded end of the accessory and encompassing the arm, and a hinge coupling the arm and wrist. The hinge uses a special pin that passes loosely through the arm and tightly through both sides of the wrist, and that also functions as a spring. The elbow has two modes of use: an extended mode, when the attached accessory and arm are in line and the attached accessory is essentially parallel to the arrow; and a folded mode, where the attached stabilizer is pivoted down or up.

Abstract: The fastening means consists of a screw and a sleeve held rotatably in such a manner on the screw that the screw and the sleeve can be rotated by means of a tool simultaneously or subsequently. The sleeve is held on the screw on the one hand by an annular projection and on the other hand by a widened tubelike edge. This design allows a simple production and assembling of screw and sleeve on a machine.

Abstract: The present invention relates to a device for the assembly and disassembly of a first pair (12) and of a second part (10), the first part (12) being securely attached to a first member (14) co-operating with a second member (22) retaining the second part (10) on the first (12). According to the invention, the first member (14) is a stud formed of a shank (16) and of a head (18) and the second member (22) is composed of a sleeve (24) in which slides a piston (26).

Abstract: A Direct Access Modular Binder containing one or more posts. Each post is comprised of two or more interconnected independent locking modules. These locking modules can easily be inserted or removed to change the length of the post to efficiently accommodate varying amounts of paper. The modules additionally function to permit direct access for insertion/removal of pages or modules anywhere along the post. The modules in the post may contain a telescoping feature. The module(s) containing a telescoping feature are optimally positioned at the end(s) of the post and fixedly attached to the post holding strips. The strips, which hold the posts' ends, may be hingedly attached to the front and back covers. The telescoping feature permits the binder to be automatically compacted (when not in use), for efficient storage, and temporarily expanded (when in use), to provide space for the user to insert/remove paper or modules. The modules which make up the post are easily locked and unlocked.

Abstract: A self-retaining adjustable diameter bolt assembly including a bolt having a head, a shank, and a threaded end adapted to be inserted into aligned holes in a pair of abutting panels for subsequent coupling to a nut on the blind side of the panels. The bolt includes a pawl engaging one side of the panel in which the bolt is inserted with the head thereof on the opposite side of the panels. A plurality of bushing segments are mounted on the bolt shank, the pawl extending through an opening in the segment adjacent the threaded end of the bolt shank. A nut, having a skirt portion, is threaded onto the threaded end driving the segments forward and filling the spacing between the holes and the bolt shank. The skirt portion of the nut overlies the pawl and protects the same. The nut can be fully torqued to cause complete radial expansion of the bushing segments in the aligned panel holes before bottoming out against the panels.

Abstract: A threaded fastener that includes a drive head having a recessed region and a threaded shaft that is mechanically and radially attached to the drive head is improved to comprise a drive portion. The drive portion is mechanically attached to the opposite end of the threaded shaft as a drive head and has a geometric shape that is a mating image of the recessed portion of the drive head and is on the same axis as the drive head. With such a configuration, the drive portion of one threaded fastener can be mechanically coupled to the recessed region of another threaded fastener in a stacked fashion such that one threaded fastener is used to drive another threaded fastener into a threaded receptacle.

Abstract: A locking bolt apparatus includes a bolt having a fastening end with a circumferential channel around the fastening end, a bolt lock assembly including a cylindrical sleeve for receiving the fastening end of the bolt, the cylindrical sleeve having a pin slot angled with respect to the cylindrical sleeve longitudinal axis, a locking pin in the slot oriented perpendicular to the longitudinal axis of the cylindrical sleeve and having two ends extending beyond the slot, the pin positioned to laterally enter the circumferential channel, and an annular release member, slidably encircling the cylindrical sleeve, for engaging the two ends of the pin and pushing the pin out of the slot and out of the channel to release the bolt.

Abstract: A self-retaining adjustable diameter bolt with an adjustable nut including a bolt having a head, a shank, and a threaded end adapted to be inserted into a hole in an installation for subsequent coupling to an nut assembly. The bolt includes a pawl with a plurality of bushing segments mounted on the bolt shank, the pawl extending through an opening in the bolt adapted to engage the segments to stop withdrawal from the bolt. The nut assembly has a first portion threaded onto the threaded end driving the segments forward and filling the spacing between the hole and bolt shank. The nut assembly includes a second portion rotatable on the first portion which can be tightened against the panel installation. In this manner, full radial expansion of the segments takes place before the first nut portion bottoms out against the installation and the second nut portion can be then tightened against the installation.

Abstract: Sections including floor(s), roof and sidewalls are tilted vertically to an upright position in series. Sections or segments are made up from floor, roof and sidewall subsections or panels assembled in a horizontal orientation, offering easy access to install ground floor insulation, finish walls, ceilings and floors before being tilted up to a permanent position such that interfacing edges to be joined are in a vertical plane. Floor, roof, sidewall and end wall subsections or panels are fabricated in flat configuration for forklift unit stacking, storage and handling. The primary application, permanent or temporary, can be for finished domestic housing or outbuildings, or an unfinished shell. A special sequence fastener having three basic parts holds together subsection parts to be raised as a section, slides raised section in place and anchors sections to the structures foundation at the ground level.

Abstract: A leaktight covering, in particular for an industrial building, includes a loadbearing element adapted to be fixed to a framework element of the building, a layer of an insulating material arranged on the loadbearing element, and a cladding covering the layer of insulating material, with connection structure holding such three components assembled together. A first member is used, on the one hand, to ensure fixing of the loadbearing element to the framework element and, on the other hand, forms part of the connection structure. A second member is linked to the first member and to the cladding. In a first embodiment, the first member is a screw screwed into the framework element, and the connection structure includes a hollow, cylindrical intermediate piece, a bottom of which is fixed to the loadbearing element via the screw.

Abstract: A puzzle is disclosed which includes an elongated left-hand threaded bolt carrying a split lock washer and having a nut at one end. The other end of the bolt is partially threaded into a second nut which has a short length of another bolt threaded at its end. The object of the puzzle is to figure out how to remove the lock washer from the bolt.

Abstract: A lifting eyebolt assembly for engagement between a workpiece to be lifted and a lifting device includes cylindrical collar that is held in place against the workpiece by a threaded fastener. A load-bearing ring is threadedly engaged to the collar to enclose the collar and the fastener. The load-bearing ring includes an eye portion for engaging the lifting device and a base portion for engaging the collar.

Abstract: In order to interconnect two subassemblies (12, 14), which must be rapidly disengaged, use is made of a mechanism having two rods (36, 44) arranged end to end and which are normally linked in rotation and translation by unlockable connecting means (56, 64). A first (36) of these rods is mounted in a cylinder (14) connected to a first subassembly and has an operating head (38) accessible from the outside of the cylinder. The second rod (44) has a thread (50) screwed onto the second subassembly (12). This arrangement makes it possible to easily fit the mechanism by actuating the operating head (38). A piston (20) mounted in the cylinder (14) controls the unlocking of the connecting means.

Abstract: A shoulder screw having a centrally positioned borehole concentric with respect to the longitudinal axis of the screw and a cylindrical center-tapped bolt receiver loosley positioned within the centrally positioned borehole of the shoulder screw and coupled thereto by a roll pin positioned perpendicularly with respect to the axis of said shoulder screw, the diameter of the bolt receiver being less than the diameter of the borehole, for enabling the bolt receiver to translate in a direction transverse to the axis of the shoulder screw.

Abstract: A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Abstract: A removable threaded fastener is provided which comprises a head component; an externally threaded shank component; and a resilient linking means connecting the head and shank components. The fastener has a longitudinal opening adapted to receive a tool for the application of torque in a driving engagement with the shank component without an integral torque transfer means. Also provided is a method for removably fastening a work piece using the removable threaded fastener by inserting the fastener through a threaded aperture in the work piece; inserting the tool into the longitudinal opening; applying torque to the shank component sufficient to cause axial displacement of the shank component against the resilient biasing of the linking means to maintain the head and shank components in axial tension; and removing the tool.

Abstract: A fastener for use in fatigue resistant structures such as aircraft wings. The fastener is installed into interference fit by tool engagement in a tapped hole coaxial with the threaded end of the pin, at the threaded end of the fastener pin. The tapped hole is engaged by a hardened mandrel which is detachably threaded into the threaded hole in the pin. The mandrel has an extending tail end which may be gripped by a pulling tool after the threaded end of the pin is partially inserted into the workpiece with the mandrel extending through the workpiece. The tail end of the mandrel is engaged by a pulling tool that can be manually or power actuated to pull the interference fit shank into the structure workpiece to produce a fatigue resistant interference between the pin shank diameter and the workpiece hole diameter.

Abstract: Disclosed is a bolt assembly which includes two spacers having cooling channels defined therein which communicate with a central bore, and a bolt which extends through the bore of each spacer. The diameter of the shaft of the bolt is significantly less than either of the spacer bore diameters, allowing coolant entering the cooling channels of one spacer to circulate through the spacer bores and out the cooling channels of the other spacer, thereby cooling the bolt.

Abstract: In the case of an attachment element (1), a large washer (5), and a tubular extension (6) formed thereon, are provided for the passage and guidance of a screw (4). The washer (5) and the tubular extension (6) are in the form of parts made separately from each other. The tubular extension (6) carries, at the end facing the washer (5), a shoulder (7) engaging in a corresponding depression in the vicinity of an opening in the washer (5). The section (8), adjoining the shoulder (7), of the tubular extension (6), can be introduced through the opening in the washer (5). The screw (4) is inserted into the extension (6) before or after the said extension has been inserted into the said washer.

Abstract: a lifting eyebolt assembly for engagement between a workpiece to be lifted and a lifting device includes a cylindrical collar that is held in place against the workpiece by a threaded fastener. A load-bearing ring is threadedly engaged to the collar to enclose the collar and the fastener. The load-bearing ring includes an eye portion for engaging the lifting device and a base portion for engaging the collar.

Abstract: Adjacent the free end of a flexible hose (22) an external thread (20) of elastomeric material is bonded or vulcanized to the external surface (21) of hose (22). A sleeve (1) is threaded onto and adhesively bonded to the external thread (20). The sleeve (1) consists of a sleeve body (2) of plastic or elastomeric material and a metallic ring (3) preferably of spring steel. The ring (3) is molded into the sleeve body (2). Part of its surface constitutes a shoulder for engagement by a cam of a coupling lock. The sleeve (1) is cheaper to manufacture and more durable than metallic sleeves.

Abstract: A tie bolt comprises a shank provided thereon with equally pitched screw-threaded portions (16, 18) separated by a spacer portion (14) capable of sliding through a hole created by the leading screw-threaded portion (16) so as to permit rapid screw-engagement of the trailing screw-threaded portion with said hole, characterized in that said threaded portions are provided by separate components (16, 18) arranged at a predetermined distance apart.

Abstract: In this fastening system two or more layers of material are fastened together by inserting a hollow sleeved fastener such as a rivet or a bolt into the hole in a high interference fit to expand the hole radially. The sleeve is configured either as a collar and a straight shank or as an angled upper portion combined with a shank for counterbored applications. The intersections between either the collar and the shank or the angle portion and the staight shank are designed with an enlarged radius such that when the sleeve is expanded after the insertion of the fastener inside of it, this radius is expanded, which in turn stress coins the adjacent edge of the hole in the layers. This localized stress coining as well as the hoop stress in the hole surrounding the hole dramatically increases the fatigue strength of the fastened layers in a structure assembly.

Abstract: A hybrid ceramic/metallic fastener (bolt) includes a headed ceramic shank carrying a metallic end termination fitting. A conventional cap screw threadably engages the termination fitting to apply tensile force to the fastener.

Abstract: The support structure for the bearing compartment for a gas turbine engine includes eight radial tie bolts connected with the clevis wherein the outer diameter clevis is connected to the mount ring with an accessible bolt for easy assembly and disassembly. The tie bolts, while preloaded in tension, can accept compressive loads during severe loading operation conditions. The turbine exhaust case housing the tie bolts and bearing compartment are designed to facilitate cooling and maintainability at reduced costs.

Abstract: This invention is directed to a coupling or a connector for securing a load-bearing support to a head of a bolt, particularly in a mining operation in which roof bolts have been used for shoring the roof of the mine. The coupling or connector is secured to a bolt head by which machinery may be lifted and or moved. A bolt may be secured in a wall to which the coupling or connector could be secured to the head for moving machinery from one place to another.

Abstract: This disclosure is directed to the use of an adjustable hand tool which employs means to prevent the separation of the cross members. Specifically the invention uses an arcquate circular cross section rib which selectively engages one of several arcquate circular cross sectioned grooves. The pliers further have a pin with a cap at one end and externally threaded at the other. The pin has internal threads with a securing screw threadably mounted therein. A threaded cap is threadably attached to the pin and the securing screw tightened against the cap to cause it to remain in its selected position.

Abstract: For the connection of two tubes (1, 2), one coupling piece (3, 4), consisting of an external thread (7) adhered, vulcanized or fused onto the end of the tube and a pipe coupling (8) screwed onto this by means of a slide adhesive is each connected with the tube ends. By means of the one coupling piece (4), a coupling lock (5) is slid from behind, which, by means of a flange (12), abuts on a shoulder unit (11). On the free end, the coupling lock (5) supports two swivelable levers (15) with eccentric cams (16), which abut on the shoulder unit (10) of the other coupling piece (3) and press this axially against the first coupling piece (4). By means of this construction, a non-tapered cross-sectional area is achieved in the tube coupling.

Abstract: A connector element is described which is suitable for connecting together two components (2a, 2b) in a system which is likely to be subject to vibration. The connector element has an indicating mechanism which provides an easily visible effect to show whether or not the two components are mated. In one embodiment the edges (10a) of a spring (10) protrude from a recessed portion (18a) in a nut (18) at the end of the bolt to indicate the unmated condition. In another form the end of an indicating lever (110) protrudes from a slot (112) in an adjusting nut (180).

Abstract: A device for mounting door frames, window frames and similar objects (1) at an adjustable distance from a support structure (2) has a tubular member (3) insertable into a through hole in the supported object (1), a screw menas (7) insertable into a hole (6) extending longitudinally through the tubular member (3), the tubular member (3) also including adjacent to a first end portion a restricting surface spaced from a resilient locking means (9), arranged to facilitate axial displacement of the screw head into a contact position with the restricting surface, but preventing withdrawal from this contact position. The second end portion of the tubular member (3) is arranged to form a preferably substantially disc-shaped abutment member (4), restricting the insertable distance of the tubular member (3) into the supported object (1).

Abstract: An adjustable air cleaner fastening assembly adapted for interconnecting predetermined centers of an air cleaner cover or housing and carburetor on an engine, the centers being eccentric. A base fastening portion engages the predetermined center of the carburetor on the engine. An air cleaner housing or cover fastening portion engages the base fastening portion and the predetermined center of the air cleaner cover for adjustably maintaining a predetermined distance between the predetermined center of the air cleaner cover and the predetermined center of the carburetor.