Abstract: On both sides under a floor of an electric vehicle, side members are provided, each in a closed cross sectional shape. Collars and the like are provided in the side members. On a lower side of a lower wall of each of the side members, cross members which are fixed by using the collars or the like are provided. Between the side members on both sides, a main battery is provided and supported by the cross members. In the vicinity of a lower side of a doorway of the electric vehicle, a cutout part is formed such that a height of a portion of an upper wall of the side member is relatively lowered. On an upper surface of the cutout part, a reinforcing member is provided. A ramp passes through a space on an upper side of the cutout part.

Abstract: An oscillating interface for an oscillating too includes a post, a pin which extends through the post, a flange slidably positioned on the post between the pin and a distal end of the post. The flange includes a drive side and a mounting side. The drive side includes a drive structure configured to interlock with a drive structure of an accessory tool. The mounting side is arranged facing the pin and defines at least one notch configured to receive the pin. A clamping member is configured to be threaded onto the post and to clamp the flange against the pin with the pin received in the notch.

Abstract: A wind turbine blade, comprising: a shell with an aerodynamic profile with at least one reinforcing rod having a largest cross section between the first and the second end of the rod and extending in the internal space with its longitudinal direction between the suction side and the pressure side. The shell has a first through hole having a smallest cross section being larger than the largest cross section of the rod. The rod has a first head having a cross section larger than the smallest cross section of the first through hole and is attached to the outer surface of the shell and where the second end of the rod is attached to a second through hole in the shell by a screw having a second head resting against the outer surface of the shell, and a shank extending through the second through hole in the shell.

Abstract: This invention uses disc shaped cams in enlarged hoes in machine feet to allow a machine to be moved and properly installed to the bedplate. Once the machine is in the proper location, the cams are locked into place with a set screw which prevents the cams from rotating and the machine from moving. The machine foot is then secured to the base by a washer and the manufacturer's specified anchor bolt is torqued to the proper value.

Abstract: A reinforcing assembly for a building construction built in front of a foundation, the reinforcing assembly comprising a geotechnical anchor anchored into the foundation with a threaded end portion projecting out of the foundation, a draw nut attachment element screwed onto the end portion of the anchor, one or two clevises mounted on the end of the anchor behind the draw nut, the clevis comprising first and second eyes each having a hole traversed by the anchor, the two eyes being connected to each other by a body with a generally curved shape, a reinforcement passing through the recess delimited by the curved body of the clevis and the anchor, configured to be linked directly or indirectly to the facing of the construction erected in front of the existing foundation.

Abstract: A face shield, such as a visor, mounts to a protective helmet using a mounting assembly. The mounting assembly has a base, a spacer assembly, and a pair of posts. The base is disposed on the interior of the helmet. The posts are connected to the base and extend outwardly into the holes that are formed in the side of the helmet. The posts may or may not extend completely through the holes formed in the helmet. The spacer assembly engages the first and second posts such that the helmet is disposed between the base and the spacer assembly. The spacer assembly receives corresponding fasteners that attach the face shield to the helmet.

Abstract: A connector includes a first portion having a shank defining an axis and a pair of flanges defining a receiving space therebetween, the pair of flanges extending from the shank substantially perpendicular to the axis. A second portion of the connector is movable relative to the first portion along the axis between a first position and a second position corresponding to a first configuration and a second configuration of the connector. The second portion includes at least one lobe that does not extend into the receiving space between the pair of flanges of the first portion when the connector is in the first configuration. The at least one lobe extends into the receiving space between the pair of flanges of the first portion when the connector is in the second configuration. The connector can be part of a mounting arrangement for mounting a component to a bracket.

Abstract: A face shield, such as a visor, mounts to a protective helmet using a mounting assembly. The mounting assembly has a base, a spacer assembly, and a pair of posts. The base is disposed on the interior of the helmet. The posts are connected to the base and extend outwardly through holes that are formed in the side of the helmet. The spacer assembly slides over the posts when the posts are inserted through the corresponding holes in the helmet, and frictionally engages the outer surfaces of the first and second posts such that the helmet is disposed between the base and the spacer assembly. The posts threadingly receive corresponding fasteners that attach the face shield to the helmet.

Abstract: A fastening device for fastening a first component B1 to a second component B2, with automatic compensation of tolerances in the distance S between the first component B1 and the second component B2. The fastening device includes a holding element and an adjusting element. A carrying element is provided on the adjusting element, the carrying element having a ring which is spring-loaded in the axial direction of the adjusting element, and in which a carrying element includes a carrying element thread and an overcomeable carrying element thread blocking means.

Abstract: A boss for securing a pair of mainboards includes a circular top and a plurality of first flexible legs. The first flexible legs are disposed on one side of the circular top and are separated from each other. Each of the first flexible legs includes a tilted wall and a pressing component. The tilted wall is formed on a surface of the first flexible leg that faces another first flexible leg. The pressing component is formed on one end of the first flexible leg away from the circular top. The tilted walls of all the first flexible legs cooperatively define a tapered channel. The tapered channel can be expanded.

Abstract: The present invention provides clamp head comprising an arched body having upper and lower faces, a vertex and opposing unequal length arms. The body is further provided with a through aperture for a bolt or like threaded fastener which extends between the upper and lower faces in the region of the vertex. The aperture in the upper face is oval and tapers outwardly through the body in the direction of the lower face. The arms comprise a reaction arm having at its distal end a reaction face and a clamping arm having at its distal end a clamping face, the reaction and clamping faces being provided with respective formations. The formations of the reaction arm extend in a direction which is substantially transverse to the direction of the formations of the clamping arm.

Abstract: A cryostat, comprising an outer vacuum vessel containing cryogenic equipment suspended from the outer vacuum vessel by a number of suspension rods. At least one of the suspension rods is provided with a tensioning and retaining mechanism for holding that suspension rod in tension braced against a suspension bracket). This tensioning and retaining mechanism includes a tubular rod carrier arranged, in use, to pass through a hole or slot in the suspension bracket, the rod carrier having an axial bore through which, in use, the rod may pass; a thread on its outer surface along at least part of its length; and a rod bearing surface for, in use, transmitting force to the rod. This tensioning and retaining mechanism also comprises a tensioning nut threaded onto the thread so as to, in use, brace against the suspension bracket to urge the tubular rod carrier in the direction of the rod bearing surface so as to apply tension to the rod.

Abstract: In an embodiment of the disclosure, a pet barrier connection member is disclosed. The pet barrier connection member comprises a first end configured to couple to a top surface of a first panel and a top surface of a second panel, a second end configured to couple to a bottom surface of the first panel and a bottom surface of the second panel, and a rod coupled to the first end and the second end.

Abstract: An electronic device includes a fan including a frame, an enclosure, and many fixing members engaged with the enclosure to fix the fan in the enclosure. The frame includes many mounting holes positioned in corners of the frame, respectively. The enclosure includes many sidewalls and many fixing members corresponding to the mounting holes. Each fixing member includes a base, a fixing portion extending from a top surface of the base, an angle shaped clasping portion extending from a sidewall of the base. Each base includes a locating block received in a corresponding locating member, and at least one fixing arms abuts against the corresponding locating member. Each fixing portion extends through the locating member and is received in a corresponding mounting hole. Each clasping portion extends through the corresponding locating member and clasps an inner wall of the corresponding mounting hole.

Abstract: An alignment device for aligning a second aperture in a second plate with a first aperture in a first plate and an alignment method of utilizing the same. The alignment device includes a main body, a first part extending from the main body, and a second part extending from the first part. The main body comprises a first linear dimension exceeding a width of the second aperture for disposing overlying the second plate. The first part comprises a second linear dimension for extending and fitting into the second aperture. The second part comprises a third linear dimension for extending and fitting into the first aperture.

Abstract: A connecting member includes a housing, a moving element slidably disposed within the housing and having an exposed portion exposed to the outer environment via the housing, an elastic element disposed between the movable element and an inner surface of the housing and biasing the movable element to position the movable element in a first position, at least one stopper disposed on the exposed portion and having an angle with respect to the housing, and a casing disposed on the housing. When the movable element is moved to a second position, the stopper deforms elastically and is received in the casing. When the casing and the housing pass through the connecting holes, the movable element is released and moved to the first position and the stopper escapes from the casing and abuts the soft substrate, whereby the device and the soft substrate are held between the stopper and the housing.

Abstract: Spacer sealant articles are provided that are useful in fastening one substrate to another by means of bolts or the like where it is desired to maintain a spacing between the substrates and yet seal around a bolt or the like that extends from one substrate through the other substrate. Such articles contain a) a heat resistant polymeric spacer element and b) a sealant element surrounded by said spacer element, wherein the sealant element has at least one through hole therein.

Abstract: A connecting member includes a housing, a moving element slidably disposed within the housing and having an exposed portion exposed to the outer environment via the housing, an elastic element disposed between the movable element and an inner surface of the housing and biasing the movable element to position the movable element in a first position, at least one stopper disposed on the exposed portion and having an angle with respect to the housing, and a casing disposed on the housing. When the movable element is moved to a second position, the stopper deforms elastically and is received in the casing. When the casing and the housing pass through the connecting holes, the movable element is released and moved to the first position and the stopper escapes from the casing and abuts the soft substrate, whereby the device and the soft substrate are held between the stopper and the housing.

Abstract: A mounting part (second member) 12 has a positioning hole 26 to be fitted to an outer peripheral side of a boss 18 disposed on a vehicle interior part (first member) 10, to be positioned thereto. A facing surface 24 of the mounting part 12 is formed into a flat surface. By a slidable-contact of the flat facing surface 24 with a tip end of the boss 18 for a positional alignment, the positioning hole 26 can be fitted readily to the boss 18. A tubular portion 28 is disposed on a surface at a side opposite to the facing surface 24 to be fitted to the boss 18 substantially over its entire length thereof. Such fitting maintains the aligned state, so that a fastening work during fixing of the mounting part 12 by screwing a mounting screw 30 into a cylindrical hole 16 of the boss 18 is facilitated.

Abstract: A fastener for fastening a heat sink to a printed circuit board via a back plate comprises a head and a shaft extending from the head. The shaft comprises a first and second engaging portions and a connecting portion therebetween. The first and second engaging portions have outer threads on exteriors thereof. Two cutouts are defined in the connecting portion. The back plate defines four thread holes machined with inner threads for engaging with the outer threads. In use of the fastener, an elastic force is produced to the fastener due to a deformation of the two cutouts during the threading. The elastic force helps the outer threads to have a secure engagement with the inner threads whereby the fastener can firmly engage with the back plate even when the fastener is subject to vibration or shock.

Abstract: A fastening device permitting two separate members to be fixed together with a relative interval between them including a bolt with a male screw portion formed at a front end side of a cylindrical shaft portion thereof and a spacer having a female screw portion engaging a male screw portion and screw-fastens with a screw of a first member side and rotates while receiving a rotation torque from the bolt and moves up to a position in which it comes into a contact with a second member. The root diameter of a male screw portion is smaller than the diameter of a cylindrical shaft portion while the inside diameter of the female screw portion is larger than the diameter of the cylindrical shaft portion. Consequently, the cylindrical shaft portion can be passed through the female screw portion even if the diameter of the cylindrical shaft portion is not reduced in diameter by cutting processing.

Abstract: A first and second component joint includes using a fastener having a first end, and a flange having a diameter greater than a tubular barrel portion. A second end having a second tubular barrel portion merges into a shoulder of a flange part having a greater diameter than the barrel portion. The first tubular barrel portion is deformed radially outwardly sandwiching the first component between the flange and the first barrel portion. The second end of the fastener is introduced through a hole in the second component by applying the second component to the first component so the shoulder of the flanged part abuts the second component spacing the second component from the first component. The fastener device is fastened to the second component by deforming the second tubular barrel portion radially outwardly sandwiching the second component between the shoulder and the tubular barrel portion.

Abstract: A mounting apparatus comprises an elongated damping member including a component coupler positioned along the length thereof, the damping member operable to damp vibrations from a modular component. A rigid mounting member is coupled to the damping member adjacent the component coupler, the rigid mounting member operable to secure the modular component to a chassis.

Abstract: A force connection strut (1) of a chassis of a passenger car or utility vehicle is provided for the non-positive connection between a chassis and a wheel carrier, preferably an axle strut or a chassis control arm. An elongated basic body (G) and at least two end-side mount supports (5) are provided for introducing and leading out forces.

Abstract: A first and second component joint includes using a fastener having a first end, and a flange having a diameter greater than a tubular barrel portion. A second end having a second tubular barrel portion merges into a shoulder of a flange part having a greater diameter than the barrel portion. The first tubular barrel portion is deformed radially outwardly sandwiching the first component between the flange and the first barrel portion. The second end of the fastener is introduced through a hole in the second component by applying the second component to the first component so the shoulder of the flanged part abuts the second component spacing the second component from the first component. The fastener device is fastened to the second component by deforming the second tubular barrel portion radially outwardly sandwiching the second component between the shoulder and the tubular barrel portion.

Abstract: An apparatus for releasable fastening and for modifying the relative position of two components (1, 1?, Bf, G; 2, 2?, Bk, Br), which have a common connecting surface forming a contact surface (5, 5?), comprises two screws (3), which in coaction with specially configured V-shaped notch zones (9a1, 9a2; 9b1, 9b2; 9a3, 9a4; 9b3, 9b4) permit a relative positioning in zero-backlash and accurately aligned fashion, and serve as the fastening means. It is thereby possible to perform a linear displacement and/or a rotation and/or a tilt in simple fashion.

Abstract: In order to also be able to use a clamping device with structural components and girders with different dimensions or inclinations, a clamping device is proposed that comprises a tension element, to which a force can be applied, and a bearing element, which interacts with the tension element and is provided with a bearing surface that can rest against a girder or structural component. In order to ensure parallel contact of the bearing surface of the bearing element on a flange of the girder or a bearing surface of the structural component, the clamping device according to the invention further has means for coupling or connecting the tension element to the bearing element, which under the influence of the tension force or clamping force, enables the independent rotation and/or inclination of the bearing element relative to the tension element under the influence of the applied tension force, until the bearing surface of the bearing element is essentially parallel to the girder or structural component.

Abstract: A first and second component joint includes using a fastener having a first end, and a flange having a diameter greater than a tubular barrel portion. A second end having a second tubular barrel portion merges into a shoulder of a flange part having a greater diameter than the barrel portion. The first tubular barrel portion is deformed radially outwardly sandwiching the first component between the flange and the first barrel portion. The second end of the fastener is introduced through a hole in the second component by applying the second component to the first component so the shoulder of the flanged part abuts the second component spacing the second component from the first component. The fastener device is fastened to the second component by deforming the second tubular barrel portion radially outwardly sandwiching the second component between the shoulder and the tubular barrel portion.

Abstract: A device for connecting structural components (10, 12), with a base part (16; 116), which is disposed at the one structural component (10), a spacer (18; on 118), which is in threaded engagement with the base part (16; 116) and is supported with one end at the other (12) structural component, and a connecting screw (20), which is inserted frictionally engaged through the spacer (18; 118), wherein the spacer (18; 118) is surrounded by any jacket (32; 126) of a softer material, preferably of a plastic which, at least in the state, in which the spacer and the base part together have the smallest axial dimension, is flush with the front surface of the spacer (118) or of the hard core (50) of the same or protrudes with respect to this front surface.

Abstract: The present invention related to a universal joint assembly for attaching two missile sections together wherein one section is a recycled rocket motor. The joint assembly includes a plurality of attachment blocks each secured through fasteners to the outer surface of the rocket casing. Separate fasteners are employed between the attachment blocks and the adjacent section. As the fasteners are advanced, the attachment blocks are first secured to the rocket casing and then the attachment blocks are drawn toward the adjacent section until the sections are abutting one another. The attachment blocks do not abut the adjacent section.

Abstract: The device provides dismantlable assembly between the top of the upper element of the mast of a tower crane and the fixed pivot which serves to support and to orientate the rotating upper part of the crane comprising the jib. Fishplates are fixed at the four corners of the pivot, of square horizontal section, in the direction of the diagonal, the fishplates lying within the permissible size for transporting this pivot. Other fishplates are fixed to the four corners of the top of the mast element, on the inside of the uprights of this element. The fishplates have holes which come into alignment, and through which removable connecting pins are fitted.

Abstract: A position-variable face-side clamping of a ring body between bearing legs with a screw bolt is to permit a central mounting of the screw bolt at reasonable cost. It must be possible to use especially profiled screw bolts for eccentric positions. For this purpose, the ring body and/or the bearing legs are provided with one oblong hole respectively which, on its longitudinal sides, has, in each case, at least two axially aligned, mutually opposite guide webs. In the case of oblong holes with only two guide webs on each longitudinal side, a centric mounting is possible by using a bolt with a cylindrical circumferential surface which can be received between the two guide webs. Eccentric offsets are permitted by the use of special formed bolts which have guide grooves assigned to the guide webs.

Abstract: The disclosed invention is an improved closing wheel attachment mechanism which has longer wear life than that of the typical attachment mechanism. The closing wheel arm on an agricultural planter has installed thereon an improved grease bushing assembly which has increased wear surface and the capability to utilize a grease on the surface. The combination of increased wear surface and greasing will greatly increase the operational life of the planter. Also included in the invention is the process and fixturing to incorporate the improved configuration on to an existing planter closing wheel structure. Included in this attachment mechanism is a welding jig which assures proper alignment of the improved bushing assembly.

Abstract: A device for interconnecting two doors to hold the doors spaced apart in a standing, upright position so that the doors will stand in a stable condition with all sides of the doors being accessible for painting comprises an elongate connecting member having attachment members connected to the opposite ends of the elongate connecting member. Outwardly facing planar faces of the attachment members have a size such that they can be received flatwise within and attached to hinge attachment locations on the side edges of respective doors. The outwardly facing planar faces of the attachment members are oriented so that planes through the outwardly facing planar faces intersect each other at an included angle of at least about 15 degrees and up to 180 degrees.

Abstract: A lock mechanism effectively used for locking, for example, an interrupting handle of an electric interrupter in an OFF position. The lock mechanism includes two plate-like lock piece portions which are juxtaposed to each other substantially in a common plane when effecting the locking, engagement grooves which are formed respectively through the lock piece portions in a direction of a thickness of the lock piece portions, and have respective openings formed respectively in their respective end surfaces which are juxtaposed to each other, and face in the same direction, and a lock ring of a square-loop shape having opposed straight portions to be fitted respectively in the engagement grooves to interconnect the two lock piece portions. When viewed in the direction of the thickness of the lock piece portions, each of the engagement grooves has an L-shape defined by an introduction groove portion and a slide groove portion.

Abstract: A wedge tensioning device for securing screen material to a screening system having a T-bolt with a threaded shank for receiving a nut threadably engaged therewith for adjustment toward and away from the frame. A pair of opposing wedges each having an elongated aperture through each wedge is provided. The T-bolt is passed through the elongated aperture of each wedge and is positioned between the frame and the nut. A spacer having an aperture therethrough is positioned between the wedges. The screen may be readily removed from the screening apparatus by driving the smaller end of one of the two wedges away from the bolt shank and out from its position to thereby loosen the tension on the screen material and permit it removal and replacement. To tension the screen material, the large end of one of the two wedges may be driven toward the shank of the bolt.

Abstract: A positive fastener-angling device for positioning an elongated fastener with respect to the face of a sheet metal connector and a wood member only at a preselected angle which is substantially less than 90.degree. by forming a slit-cut in the sheet metal connector by means of a die which progressively at the same station, forms a fastener guideway in the shape of a half cone. The fastener opening and the guideway are dimensioned so that the fastener can only penetrate the sheet metal connector at a preselected angle set at the factory.

Abstract: A shaft supporting structure includes a shaft having longitudinal end portions, with at least one of the end portions having at least one planar surface parallel to the axis of the shaft. A receiver part which receives the one end portion of the shaft has a regulate structure defining a recess through which the one end portion of the shaft can pass when the one end portion is moved in an insertion direction parallel to the planar surface. The regulate structure is operable to restrict radial displacement of the shaft after the shaft has been received in the receiver part and the shaft has been rotated so that the planar surface is no longer parallel to the insertion direction. A resilient pawl is operable to engage the planar surface and restrict rotation of the shaft in the receiver part.

Abstract: A tie rod bearing unit for use in connecting together a pair of oppositely facing wall form structures of a concrete form assembly including upright structural beams with spaced-apart, back-to-back channel members, each of which has a pair of transversely opposite leg sections and an interconnecting web section. The tie bearing unit includes a bearing plate from a first side of which projects an open box member. In position against a beam, the box member of the tie bearing unit is in a friction fit with the web sections within the space between the channel members and the first side of the bearing plate is in contact engagement with the leg sections of the beam. A tie rod of the form assembly bears against the opposite or second side of the bearing plate. The tie rod bearing unit strengthens the beam and distributes the forces exerted by the tie rod.

Abstract: A ceramic-metal article including a ceramic rod, a metal rod, and a braze joining the ceramic and metal rods at a braze area of a coaxial bore in the metal rod. The bore gradually decreases in diameter, having an inward seat area sized for close sliding fit about the ceramic, a larger brazing area near the joint end, and a void area intermediate the braze and seat areas. The ceramic is seated without brazing in the bore seat area. The side wall between the brazing area and the metal outer surface is about 0.030-0.080 inch. The braze includes an inner braze layer, an outer braze layer, and an interlayer about 0.030-0.090 inch thick. A shoulder between the brazing and void areas supports the interlayer during bonding while preventing bonding between the void area and the ceramic member, leaving a void space between the void area and the ceramic member. A venting orifice extends generally radially through the metal member from the outer surface to the void space.

Abstract: An energy absorbing structure for a vehicle door includes an elongated resin reinforced member disposed horizontally between the inner and outer panels of a vehicle door. The elongated member includes first and second enlarged ends, each having an outwardly diverging surface. The elongated member is supported at either end by first and second support members which attach to the vehicle door frame. The support members both include female receptacles having a compatible taper which allows them to mate with the respective enlarged end of the elongated member. The energy absorbing structure absorbs energy imparted laterally upon a vehicle door during side impact through deflection of the elongated member and additionally through distortion of the first and second support members.

Abstract: The invention provides a tensioning assembly for a supporting device securable by axial expansion between substantially parallel surfaces, comprising an elastomeric body provided with a major face for contact with one of the surfaces and an opposite face provided with an aperture extending partially towards the major face, a tensioning screw member of diameter complementary to the aperture and having a first end configured for insertion therein, the member being provided with an intermediate enlarged platform rigidly attached thereto at an axial location removed from both extremities thereof, the tensioning screw member being provided with a male screw thread at its opposite end, the depth of the aperture being substantially equal to the length of the first end of the tensioning screw member whereby, upon assembly, an upper surface of the flange transmits an axial force to the opposite face of the elastomeric body, and a cap member configured for attachment to a strut beam and provided with a female screw thr

Abstract: This invention comprises an improved mechanism for latching telescoping articles together and for releasing them from such a condition by the act of rotating them with respect to each other. The mechanism includes a pair of pawls interconnected to each other by a spring in such a manner that the latch heads of the pawls are urged in a plane in opposite directions by action of the spring. The invention is illustrated and described in the context of a table which is mounted to the floor of a vehicle, vessel or the like.

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: A bracket for a wall form tightens ties used to secure the wall forms together. The bracket has a cam assembly with an inner member and an outer member axially aligned with each other. The inner and outer members have tapered abutting wedge surfaces. The outer member has a lug for receiving an end of the tie. A key may be inserted into one of the members to rotate it. Rotating one of themembers relative to the other causes the lug to move outward to tighten the tie, or to move inward to release the bracket from the tie.

Abstract: A wire mounting structure for a vehicle cruise control has an upper plate 20a of a connector 20 formed with a through-hole 21a and a notch 22, and a lower plate 20b formed with an enlarged hole 21b for receiving the lower end of a rod 6b.

Abstract: An improved stand-off device is disclosed which is used to control the spacing between adjacent planar elements in electronic instrumentation. The stand-off device includes a resilient, hollow shell member and a rigid, cylindrical inner element. The shell member has at least one slot extending from one end, and has a top interior cylindrical surface, a bottom interior cylindrical surface, and a threaded intermediate interior surface. The inner element has a conical expander portion and a drive portion with a threaded exterior surface which is complementary to the threaded interior intermediate surface of the shell member. The slotted end of the shell member is adapted for insertion into an aperture in a planar member from one side of that member. The inner element is adapted for insertion into the shell member from the same side of that member, whereupon the conical portion forces the slotted end of the shell member to expand and engage the perimeter of the aperture in the planar member.

Abstract: An anti rotational device is illustrated for use in a down hole pumping unit operated by a sucker rod driven by a hydraulic pump, fixing the cylinder rod of the hydraulic pump while permitting rotation of the sucker rod driven thereby.

Abstract: In a lighting system having lighting fixtures including end plates and a method of assembling same with rigid conduit connectors therebetween, each end plate is formed with at least one alignable key hole thereon having a substantially circular Archimedean spiral circumference and each conduit connector comprises a tube having a substantially circular Archimedean spiral surface configured to be longitudinally slidably received in each key hole in one given angular orientation and to provide a friction-tight fit in the key hole in response to rotation of the tube around its longitudinal axis is one direction from said one given angular orientation.

Abstract: Balusters and rails are angularly adjustable after their assembly to fit the different pitches of stairways.