Abstract: A memory system is disclosed that includes memory modules that are longer and taller than conventional prior art memory modules. Each memory module includes two roughly L-shaped openings that extend from the top surface of the memory module near each side surface of the memory module. These L-shaped openings form tabs that extend horizontally along the top surface of the memory module. A guide assembly that includes sockets and guides is adapted to receive the memory module. Rotating latches that couple to each guide near the top of each guide engage a notch on each side surface of the memory module for facilitating insertion and removal. Rotation of each latch into a latched position engages a tab on the memory module so as to securely latch the memory module in place.

Abstract: A card connector has a cam lever and an eject member including a cam element and lever guide ways. The eject member can move in a card insert direction relative to upper and lower housings in response to an insertion of the card. The eject member can move in a card eject direction relative to housings in response to a card eject operation. The connector further includes a press member for elastically pressing the lever so that a second end of the lever maintains to position in the guide ways. An opening is formed in the housing to allow the press member to be elastically displaced. The opening exposes only a part of the press member to an outside of the housing so that a distal end of the press member contacts with the housing.

Abstract: A modular jack (1) mounted on a printed circuit board includes an insulating housing (10) having a bottom wall (13) and a pair of contacts (20) received in the housing. A pair of resilient posts (18) extend from opposite sides of the bottom wall. Each resilient post includes an outer section (182) and an inner section (181) with a slit (183) being defined therebetween. The bottom wall also has a tail post (19) downwardly extending from the middle of a rear end thereof, which is configured as a half column.

Abstract: A printed circuit board retainer for holding a printed circuit board. The printed circuit board retainer includes a plate having opposing surfaces. Several slots extend through the plate. A latch assembly extends from another surface. The latch assembly has the printed circuit board mounted to it. Several terminals are mounted to the printed circuit board and extend through the slots. A lock is mounted to the latch assembly to prevent the latch assembly from releasing.

Abstract: A connector device is provided, which device includes a housing including first and second sides opposing each other, first terminal members attached to the first side of the housing, and second terminal members attached to the second side of the housing. Each of the first terminal members and each of the second terminal members are alternately arranged side by side, and the first and second terminal members have respective contact portions for external connection, the contact portions being arranged side by side.

Abstract: An IC card connector is provided for connecting an IC card having a terminal array. The connector includes a base member having receptacle means for receiving the IC card for movement between a preload position and a latched position. The base member has a plurality of electrically conductive contacts for engaging the terminal array of the IC card. An ejector member is movably mounted on the base member and is engageable with the IC card for movement therewith between the preload and latched positions. A latch on the base member is engageable with the IC card for locking the IC card in its latched position. A spring is operatively associated between the ejector member and the base member for moving the ejector member and IC card back to the preload position automatically in response to releasing the latch.

Abstract: The present invention improves the durability of a card connector by providing a card-holding structure which does not have resilient parts. Ribs (30) and grooves (32) are formed at corresponding positions in opposite inside surfaces (6a, 6b) of a rear end portion of a card-receiving slot (6) of a housing (2) to accommodate a card (C) inside housing (2). An upper surface of the inserted card extends into the grooves (32) by the ribs (30), so that the card is held between the ribs (30) and grooves (32).

Abstract: A socket having a slot with an array of terminals for providing an electrical connection with an array of terminals on the edge of a printed circuit board includes an alignment mechanism for progressively correcting any misalignment between the board and the slot as the board is moved towards and inserted into the slot. The alignment mechanism includes a pair of guides supported near opposed ends of the slot. Each of the guides includes a base surface and guide surfaces sloping upwardly and away from the base surface. The socket may also include a release mechanism interactive with the alignment mechanism.

Abstract: Disclosed is a chip card connector comprising a base frame (2) with integrated contact springs (3) and a closing cover (4) hinged from above, where the closing cover (4), presses the chip card inserted into the base frame (2), against the contact springs (3), projecting into the interior of the base frame and which has on the side and opposite its axis of rotation, two stop arms with their indexing tips (9, 10) engaged in closed position under the shoulders (11, 12) provided on the edge of the base frame (2) opposite and able to be folded one against the other at the cover (4) in order to bring about its closure.

Abstract: A semiconductor package for vertically surface mounting to a printed circuit board having retention apparatus for holding the package thereto.

Abstract: Apparatus for mounting retrofit equipment modules into the equipment mounting cabinetry of an installed modular equipment signal network includes an interface module and mini-backplane combination which is adapted for insertion into the equipment cabinetry with electrical signal connection of the mini-backplane to the cabinetry master backplane, and for mounting retrofit modules inserted therein in electrical signal interconnectivity with others of the network equipment modules.

Abstract: A package for communication equipment has a housing fitted with a locking mechanism and electrical/communication power supply and distribution, and includes UP, DOWN, RIGHT, LEFT faces for assembly with other housings. The locking mechanism includes a rotatable axle penetrating the housing and having a first end located outside of the housing and a second end located inside of the housing. A camming hook having a distal end is mounted on the rotatable axle inside the housing to rotate with the axle and locks into position when rotated in a first direction, to bring a movable electrical contact to make resilient electrical contact with a stationary live contact. When the rotatable axle is rotated in a direction opposite to the first direction, the mechanism becomes unlocked and breaks the electrical connection at the movable electrical contact.

Abstract: An electrical connector includes an elongated dielectric housing defining a slot for receiving a flat electrical circuit. A plurality of terminals are mounted on the housing, with contact portions spaced along the slot. A metal actuator is mounted on the housing and includes a pressure plate portion for biasing the flat electrical circuit against the contact portions of the terminals. A flexible elongated strip portion is spaced forwardly of the pressure plate portion and extends longitudinally of the housing to define a preliminary circuit holding means at a mouth of the slot. The pressure plate portion is separated from the elongated strip portion at opposite ends thereof by open areas to, thereby, isolate the flexibility of the elongated strip portion from that of the pressure plate portion.

Abstract: Retention systems for use with processor modules (20) on circuit boards upon mating with connectors (12). Such systems utilize end blocks (44) at ends (36) of the connector, having retention members (54) for securing the processor module in its mated position with the connector, stabilizing the module and relieving stress from the connector. Resilient members (80) are compressed by a leading end (26) of the module at sides (32) thereof upon full insertion into the retention members (54), maintaining sufficient pressure on the latching system (34,60) to remove looseness from the assembly and stabilize the module against the effects of vibration and other movement.

Abstract: An apparatus for connecting and/or disconnecting at least one printed circuit board with at least one socket in a chamber, the printed circuit board being at least partially disposed within the chamber, includes at least one tool engageable with at least one printed circuit board and capable of moving the printed circuit board into or out of connection with at least one socket in the chamber, or both. At least one automated actuator is connected with the at least one tool.

Abstract: A circuit board based cable connector is disclosed for use with a sensor connector tab to establish electrical signal connection between a sensor and a monitor or processor. The connector comprises a housing which encloses a circuit board. A slot is formed through a leading edge of the housing to allow insertion of the connector tab. A release mechanism releasably secures the connector tab within the housing. The circuit board is positioned adjacent and generally parallel to the inserted connector tab. Traces are formed on the side of the circuit board opposite the connector tab and establish electrical connection between wires of a cable and connector arms of the circuit board. A ground plane is formed on the tab side of the circuit board and, together with the flexible shield, provides an EMI shielding envelope. The connector arms extend generally parallel to the circuit board and are bent at their free ends to form dips.

Abstract: An adapter is described for receiving a smart card (16) and for electrically connecting smart card pads (24) to terminals (44) at the rear of a PC card (40), which includes a simple and reliable latch (72) for locking the adaptor to the PC card. The latch is slidably mounted on the connector, and has a rear part (74) positioned to be pushed forward by the leading edge (80) of a smart card, and a front part (62) in the form of a pin that causes a pair of arms (54, 56) of the adaptor to lock to the PC card. The rear part is in the form of a flat bar that lies in the plane of the smart card-receiving slot (14), the flat bar extending across the width of the adaptor and having handles (100, 102) at its opposite sides that project from opposite sides of the adaptor housing for manual movement of the latch.

Abstract: An electrical connector includes an elongated dielectric housing defining a slot for receiving a flat electrical circuit. A plurality of terminals are mounted on the housing, with resilient contact portions spaced along the slot. A metal actuator is mounted on the housing for movement between a first position allowing free insertion of the flat electrical circuit into the slot and a second position wherein a pressure plate portion biases the circuit against the resilient contact portions of the terminals. The metal actuator includes a support plate portion backing the resilient contact portions. At least the areas of the support plate portion which engages the contact portions is separated by a thin layer of dielectric material. The actuator, thereby, performs dual functions of biasing the circuit against the resilient contact portions and also providing reinforcing support for the contact portions.

Abstract: An electrical connector includes a latch for retaining an IC card. A card adaptor body receives the IC card. The adaptor body has a connector end including a pin header. A pair of opposed card side edge guides extend from the connector end and terminate adjacent an open end of the adaptor body. The IC card is inserted into the adaptor body and has a connector edge engaged with the pin header, a pair of opposed sides engaged with the side edge guides and a rear edge at the open end of the adaptor body. A retainer includes a flexible arm and a hook extending from the connector end into the open end. The hook is automatically engaged with the card rear edge when the card is inserted for retaining the card engaged with the pin header, and is movable out of engagement with the card rear edge to permit the card to be removed from the adaptor body.

Abstract: The connector assembly includes a housing that carries a flexible circuit member and two slide members with slide cam surfaces. A daughter board is secured to one surface on the housing and is electrically connected to the flexible circuit member. The cam surfaces on the two slide members engage cams on a mother board. Movement of the slide member cam surfaces relative to the cams on the mother board moves the housing relative to the mother board and forms an electrical connection between the flexible circuit member and the mother board. A linkage system moves both slide members to form and maintain the electrical connection between the flexible circuit member and the mother board.

Abstract: An electrical connector is provided for mounting on a surface of a printed circuit board and for receiving a flat electrical circuit. The connector includes an elongated dielectric housing defining a slot for receiving the flat electrical circuit. A plurality of terminals are mounted on the housing, with contact portions spaced along the slot. A metal fixing member is mounted on the housing for securing the connector to an appropriate mounting pad on the printed circuit board. A metal actuator is mounted on the housing for movement between a first position allowing free insertion of the flat electrical circuit into the slot and a second position biasing the flat electrical circuit against the contact portions of the terminals. Complementary interengaging latches are provided between the metal fixing member and the metal actuator to define one or more of the positions of the actuator.

Abstract: An electrical connector includes an elongated dielectric housing defining a slot for receiving a flat electrical circuit. A plurality of terminals are mounted on the housing, with contact portions spaced along the slot. The contact portions are fixed against movement relative to the housing. A metal actuator is mounted on the housing for movement between a first position allowing free insertion of the flat electrical circuit into the slot and a second position wherein a flexible plate portion of the actuator biases the circuit against the fixed contact portions of the terminals.

Abstract: An electrical connector is disclosed which provides connection of sensors to monitors. The connector is designed to be low-profile, permit ease of attachment and disconnection, and maintain a strong connection to prevent accidental disconnects.

Abstract: An end bracket for ruggedization of Commercial Off-The-Shelf (COTS) printed wiring cards is described. End bracket (400) has flanges (420,430) with holes for attachment of end bracket (400) to free end (250) of printed wiring card (210). End bracket (400) also has a flange (440) for attaching end bracket(400) to a fixed structure. The holes in flanges (420,430) generally form a hole pattern that matches a standard hole pattern found in free end (250) of printed wiring card (210).

Abstract: The present invention provides two novel human galectins (designated individually as GAL-5HA and GAL-5HB, and collectively as GAL-5H) and polynucleotides which identify and encode GAL-5H. The invention also provides genetically engineered expression vectors and host cells comprising the nucleic acid sequences encoding GAL-5H and a method for producing GAL-5H. The invention also provides for use of GAL-5H and agonists, antibodies, or antagonists specifically binding GAL-5H, in the prevention and treatment of diseases associated with expression of GAL-5H. Additionally, the invention provides for the use of antisense molecules to polynucleotides encoding GAL-5H for the treatment of diseases associated with the expression of GAL-5H. The invention also provides diagnostic assays which utilize the polynucleotide, or fragments or the complement thereof, and antibodies specifically binding GAL-5H.

Abstract: A circuit board connecting device electrically connects exposed back ends of circuit boards when the front ends of the circuit boards are received in a holder. The connecting device has first connectors, second connectors and a connector substrate. The first connectors are attached respectively to the back ends of the circuit boards and extend lengthwise with the back ends of the circuit boards. The second connectors are adapted for connection respectively to the first connectors when the first and second connectors are aligned in a plane parallel to a plane in which the circuit boards extend. The connector substrate has the second connectors attached thereto, extending perpendicular therefrom. The second connectors are electrically connected to each other on the connector substrate. The connector substrate is fixedly attached to one of the circuit boards.

Abstract: An injector/ejector mechanism with a lever pivotally connected to a module faceplate to pivot about a pivot axis. The lever has a handle extending away from the faceplate, and a latch portion extending away from the faceplate in a direction opposite the handle portion. The latch portion includes a first tooth and a second tooth, the first tooth being positioned farther from the faceplate than is the second tooth, The lever is movable between a first position in which the first tooth extends laterally from the pivot axis by a limited first amount, and a second position in which the first tooth extends laterally from the pivot axis by a greater second amount, and the lever is spring biased toward the first position.

Abstract: A socket (10) for retainably receiving a module (11) therein, includes an insulative housing (12) having a plurality of passageways (16) extending therethrough in a front-to-end direction for receiving a corresponding number of contacts (18) therein for engagement with the corresponding circuit pads on the module.

Abstract: A smart card connector with a card slot (10) for receiving a smart card employs an end position switch comprising a single resilient contact (14) engaging a stationary post (16) to detect full insertion of a smart card. Self cleaning wiping mating contact is generated when the resilient contact (14) engages the stationary rigid post (16). The resilient contact (14) and the post (16) are mounted in the rear of a housing base (4) which includes resilient data contacts (12). The housing base (4) also includes resilient cantilever diverter springs (18), molded into the housing base which both protect the data contacts (12) and provide a reactive force to counter the force exerted by the normally closed resilient contact (14) upon full insertion of the smart card.

Abstract: A circuit board assembly (10) having a plurality of circuit board subassemblies (12) having a device (14) for releasably electrically and mechanically connecting the subassemblies (12) into a general configuration of a plane, the subassemblies (12) having a device (16) for electrically and mechanically interconnecting the subassemblies (12) into a system back plane (18). One or more brackets (20) interlock a plurality of the generally planar subassemblies (12) for stability.

Abstract: A latch for retaining printed circuit boards (PCB) or other types of daughter cards (29) in a card file (11) is disclosed. Two latch mechanisms (43a and 43b), one located adjacent the outer corner of each card, engage latch slots (35) when the cards (29) are correctly installed. Each latch mechanism (43a and 43b) includes a latch housing (45), a plunger assembly (47) mounted in the latch housing (45), and large coil springs (49a and 49b) that create a force in a direction parallel to the direction of card installation. The large coil springs (49a and 49b) urge the plunger assembly (47) away from the direction of card installation and out of alignment with an opening (77) in the latch housing (45). The plunger assembly (47) includes a plunger housing (53), a latch pin (55), a smaller coil spring (59), and a latch pin retraction lever (57).

Abstract: A personal computer comprises a housing having a bottom wall. A plurality of functional components are arranged side by side on the bottom wall of the housing. A fixture plate is arranged on top of the functional components and secured to the functional components and the bottom wall by means of screws. The functional components are held between the fixture plate and the bottom wall.

Abstract: A personal computer comprises a housing having a bottom wall. A plurality of functional components are arranged side by side on the bottom wall of the housing. A fixture plate is arranged on top of the functional components and secured to the functional components and the bottom wall by means of screws. The functional components are held between the fixture plate and the bottom wall.

Abstract: A card edge connector is provided with a housing, electrical contacts, and movable wedge clips. The wedge clips are slidingly mounted to the housing at an angle to a card edge receiving slot in the housing. The, wedge clips are suitably shaped and mounted to the housing to be contacted by and moved with a printed circuit board inserted into the receiving slot. The wedge clips include a spring section for returning the clips to a home position when the board is removed from the receiving slot.

Abstract: A sliding contact for providing an electrical connection between a side contact of a PC card and a terminal accessible to a host device is disclosed. The disclosed sliding contact is disposed in a side rail of an ejection mechanism for receiving and ejecting the PC card and comprises a channel (16-5) in the side rail; a sliding member disposed in the channel and comprising a first part (16-2) and a second part (16-3) attached to the first part, the first part being electrically conductive; a first electrically conductive spring member (16-1) connected at a first end to the terminal (16-6) accessible to the host device and having at a second end a sliding contact with the first part (16-2) of the sliding member, the first spring member providing a first force for urging the sliding member toward the PC card; and a second spring member (16-4) providing a second force for urging the sliding member toward the PC card.

Abstract: A self-adjusting insertion/extraction apparatus is disclosed for inserting and extracting a printed circuit (PC) board into and from an electrical connector mounted at the base of a PC board rack, the apparatus being configured to function effectively regardless of limited variations in the height of the PC board. The apparatus includes a lever and a pawl pivotally secured to the PC board, at an edge of the board opposite the connector. A spring resiliently couples the lever to the pawl such that pivoting the lever from a raised position to a lowered position yieldably biases the pawl into engagement with the PC board rack, to insert the board into the rack connector. Further, raising the lever from its lowered position to its raised position moves a portion of the lever into engagement with the rack, to extract the board from the connector. Limited variations in the height of the board are accommodated by corresponding flexing of the spring.

Abstract: An adapter cable and card for interfacing a personal computer to a local area network or other type of computer network which can operate on either of two types of media. The cable uses a symmetrical plug connector which mates with a receptacle connector on the adapter card in either a first position, or a second position which is 180 degrees rotated from the first position. In the first position, signal lines for one type of media are connected and signal lines for the other type of media are disconnected. In the second position, signal lines for the second type of media are connected, and signal lines for the first type are disconnected. The disconnection of the unused conductors allows the drive circuits for unused type of media to remain active without causing electromagnetic interference problems.

Abstract: Resilient wipers (4a, 4b) cooperate with inclined planes (13a, 13b) to maintain the card (7) constantly parallel to the base part (1) of the card reader during the introduction of the card into the reading compartment (12). The free ends of the wipers (4a, 4b) are biased into a plane further from that of the base part (1) than that which the free ends of the reading wipers (3a, 3b) tend to assume. This device is simple and compact and makes it possible to eliminate static electricity created by the card rubbing against the card reader.

Abstract: Device for receiving integrated circuit cards. The devices used until now in practice do not sufficiently protect the individual cards in all operating modes. The present device is intended to allow the cards to be locked. For this purpose, a locking mechanism (16) is provided, having at least one bar (9) which is designed as a lever (20, 21, 22) and can be moved out of a locking position into an unlocking position and vice versa and which is preferably held in its locking position with the aid of a holding device (23). The holding device (23) may, for example, be a torsion spring (36). In the case of another embodiment, the locking mechanism (16) may additionally have a closable blocking device (44) which acts on one of the abovementioned levers and can be moved out of a blocking position, preventing a movement of the relevant lever (21, 22), into a release position, releasing a movement of the lever (21, 22), and vice versa.

Abstract: A connector for connecting flexible circuit conductors to contact pads of a PC board edge connector having a snap together housing of modular design having leaf springs used to resiliently bias the flexible circuits for contacting the pads, a slot for receiving the PC board edge connector, coil springs adjacent the slot for retaining the inserted PC board edge connector in the slot an alignment arrangement for alignment of the conductors and pads, protection for the free end regions of the flexible circuits and strain relief features, the connector being usable with conductors spaced 0.3 mm or less apart, and being easily assembled and disassembled.

Abstract: An interconnecting structure in which circuit and componentry bearing cards are retained in contact with an intermediate card that has component and circuitry areas, and socket insertion contacts.

Abstract: A retainer for holding a printed circuit card in a card rack or the like is disclosed. The retainer comprises a plurality of wedge-shaped members slideably mounted end-to-end on a rod, with at least one of those members being moveable in a transverse direction relative to the rod and to its respective adjacent members upon effective shortening of the rod to thereby bring a clamping surface of the transversely moveable member into contact with a printed circuit board and to apply a clamping force thereto. The rod is formed of an alkaline metal alloy that has been tempered to provide the rod with sufficient strength and decreased weight.

Abstract: An arrangement is provided for connecting an electrical connector to a mating printed circuit board. The connector includes a dielectric housing having top and bottom walls joined by spaced apart side walls. An elongated slot is defined by the top and bottom walls for receiving the mating printed circuit board. A plurality of terminals are mounted in the housing with contact portions along the slot for engaging contact pads on the circuit board. At least one pair of aligned apertures pass through the top and bottom walls of the housing, and an aperture in the circuit board is adapted for alignment with the housing apertures when the circuit board is inserted into the slot. A fastener is received in the housing apertures and the aligned board aperture to maintain the board in mating relationship with the connector. The fastener is adapted to clamp against the top and bottom walls of the housing.

Abstract: A print substrate connector having a main body comprising a pair of supporting portions. A lock arm 26 is provided on a sidewall of a substrate mounting groove 22 formed in the main body of the substrate connector, into which groove 22 a terminal connecting portion 30 of the print substrate 29 is inserted. The part of the sidewall of the substrate mounting groove 22, on which part the lock arm 26 is placed, faces a vacant portion at the sides of the terminal connecting portion 30 of the print substrate 29, on which vacant portion no element is mounted. In operation or when the print substrate 29 is inserted into the mounting groove 22 of the main body, a locking claw 28 formed on the lock arm 26 is adapted to engage with a locking hole 32 formed on the vacant portion of the print conveniently used as a locking means of the substrate without a bad influence on a high density mounting of elements mounted on the substrate.

Abstract: A card edge connector that has a base, spring contacts connected to the base, and a cover movably mounted on the base. The cover is adapted to move at least some of the spring contacts from a retracted position to a contact position upon insertion of a first type of card into the connector and, adapted not to move spring contacts upon insertion of a second type of card into the connector. The cover is adapted to be moved by the first type of card, but not by the second type of card. Lateral support is provided to the cover by the base to prevent the cover from being substantially pushed laterally outward by the spring contacts. Clips on the cover are provided to prevent the first type of card from being removed from the connector without moving the cover.

Abstract: A resilient connector capable of being inserted into a printed circuit board comprises a clamp head portion and a leg portion. Moreover, the clamp portion has a long arm, a short arm and a base connected between the long arm and the short arm. The leg portion is formed by longitudinally severing a part of the intermediate portion of the clamp head portion, which extends from an intermediate position of the long arm to an intermediate position of the base. Thus, the printed circuit board can be inserted into, and brought into contact with, the contact surface of the clamp head portion. Subsequently, the printed circuit board may be pivoted to a second angular position from a first angular position. Preferably, the second angle is selectively designed at a 25 degrees orientation to assure the conservation of space.

Abstract: The present invention relates to an IC card connector in whcih an IC card is inserted into gaps between a contact arrangement surface formed in a housing of the connector, and a pushing plate vertically movable with respect to the housing. After the IC card has been inserted, the pushing plate is pushed toward the contact arrangement surface by pushing mechanisms, so that the IC card is contact-pressed to the contacts on the contact arrangement surface, through the pushing plate. The pushing mechanisms may be formed by, for example, levers rotatable between first positions where the levers cross the pushing plate immediately above the same and second positions where the levers do not cross the pushing plate.

Abstract: A wiring module for electrically connecting a plurality of electric parts disposed on an equipment frame to a source of electric power, the module comprising an elongated insulating substrate formed to extend along a path adjacent to electric parts disposed on the frame. A pattern of wiring conductors extends along and integral with the insulating substrate for conducting electric current from the source of electric power to each of the electric parts to be connected. The insulating substrate has one or more edge portions provided with protrusions integrally formed with the substrate and extending laterally therefrom. The protrusions each are positioned on the insulating substrate at a location adjacent an electric part to be connected and at least a portion of the wiring conductors are integral with the protrusions to provide a contact on the protrusions for connection to corresponding electric parts.

Abstract: The surface mount connector comprises male and female interconnectable housings. The male housing includes a plurality of male contacts that are connected to a plurality of wires and the female housing accommodates a plurality of female contacts for receiving and holding the male contacts in assembly. The female contacts each further include a resilient lead for surface mount connection to a conductive electrode disposed on a printed circuit board surface. The female housing further includes a connection portion that in a preferred form, includes slots formed in flanges extending outwardly from the female housing, the slots in the flanges being adapted to receive and resiliently hold the printed circuit board therein while the leads of the female contacts are attached to the conductive electrodes on the printed circuit board.

Abstract: The present invention relates to a latch for detachably securing electron cards along orthogonal loading axes. A planar fixed gate is rigidly securable to an external supporting structure and is provided with at least one elongated protrusion extending above one of the planar surfaces. A planar movable gate is rigidly securable to an external electronics mountable structure wherein said movable gate is provided with at least one elongated groove on a planar surface. The planar fixed gate and the planar movable gate are abuttingly engageable to each other with the protrusion matingly fitted within the corresponding groove. The orientation of the protrusion and groove are orthogonal to an axis of a first loading force applicable to the moving gate. A fastener such as a threaded bolt rigidly maintains the planar surfaces of the fixed gate in engagement with the movable gate for rigid support along a second loading axis orthogonal to the first loading axis.