Abstract: The device is applicable to the connection of two enclosures, each having a door closing and opening formed in a flange. One of the doors supports a rotary control member having three series of slots forming cams. V-shaped levers articulated to the doors simultaneously cooperate with slots and with the bolts in order to displace the latter between locking and unlocking positions under the action of rotating the member. The configuration of the slots makes it possible to control the locking of the doors to one another and to the flanges in a sequential manner. Preferably, the bolts are inclined in the direction aiding sealing.

Abstract: An improved impact plug assembly is provided, said assembly having a plug for insertion into an aperture in a workpiece and a cooperating crossbar for locking the plug into place in the aperture, the improvement comprising at least one shear lip means formed in said crossbar outwardly of said plug adjacent said slots to engage said plug walls adjacent said slots, whereby said crossbar is captured in said plug.

Abstract: The invention relates to a steam pressure cooker, which essentially consists of a lower pot and a cover unit sealing the lower pot. The lower pot has a smooth circular pot rim. The cover unit consists of a lower lid and an upper lid. The latter is designed as a sealing element, which engages the lower part of the pot rim by the flanges. As an improvement of this type of pressure cooker, it is proposed that the upper lid contain two half-lids, and that each half-lid be able to rotate about its own axis of rotation essentially parallel to the central axis of the pot (geometrically vertical) relative to the lower lid and lower pot, and further, that the axes of rotation lie eccentric to the pot's central axis and diametrically opposite each other with respect to this axis swivel mechanism rotatably supported concentrically on the lower lid.

Abstract: Apparatus for temporary containment of chemicals escaping from end members of a cylindrical container storing pressurized chemicals includes a plate, that can fit within the constricted walls of the ends of the cylinder and an inflatable tube around the edge of the plate. The tube, when inflated, will support the plate against the edges of the cylinder and contain the gas between the containment apparatus and the end members of the container. The repair device further includes a locking mechanism for positioning the plate with respect to threads of the cylinder and for preventing release of the plate in the event of deflation of the tube. A (CO.sub.2) pressurized gas capsule can be included to provide the pressure to expand the tubing. The plate can further include a valve for eventual release of the contained chemical at a convenient location.

Abstract: A shutoff valve has a housing which is provided in the region of a lateral mounting opening with several holding projections having free ends which extend toward a cover and form an abutment for an edge of the cover, wherein the cover is sealingly mounted in the housing by tensioning pins which are driven between the abutment of the holding projections and a cover edge formed as a counter abutment.

Abstract: A locking system for a flood cover having a rigid mouth. The system has a pair of oppositely opposed locking mechanisms. Each leg mechanism includes a stiff leg portion whose length is greater than the air space that would result if the closure over which the cover is to be placed were centered in the cover. A spring holds the stiff leg essentially parallel to the mouth before the cover is placed over the closure. As the cover is placed over the closure the stiff leg pivots and the tension of the spring increases.

Abstract: A high pressure apparatus including a container internally provided with a cylindrical space capable of being closed, which container is constituted by a unitary member or an integral assembly of a plurality of members joined throughout its full axial length; a cotter member or a pin inserted radially in the container at one or both axial end portions of the container, which cotter member or pin serves as a structure for bearing an axial force induced by a high pressure load; and a plurality of flexible members wound round the outer periphery of the container axially of the latter to thereby exert a precompression on the entirety of the container.

Abstract: A storage receptacle for the collection of trash, litter, garbage, etc., particularly in public places such as recreational grounds and picnic areas, is fabricated of formed concrete for strength and stability, and has a cantilevered closure lid, normally locked in closed, covering relation, but which may be unlocked and readily swung between open and closed positions by an attendant whenever necessary for emptying. Side openings just below the lid serve as access to the receptacle for disposal use by the public.

Abstract: A pressure vessel mounts hinges adjacent its open end for pivotal displacement of a door between open and closed positions, the hinges being raised and lowered with the door by power operated means. The door may be closed when lowered into roller-supported alignment with power operated locking means which includes toggle linkages for clamping the door to the vessel. Power operated safety pins hold the linkages in the locked condition.

Abstract: A door assembly for a sterilizer includes a rectangular door on which is a vertical rail assembly movable horizontally toward and away from the door on threaded posts. Nuts carried by the rail assembly are rotated on the posts by sprockets entraining a motor driven chain. The rail assembly carries spring mounted axially retractable horizontal pairs of locking bars. The bars are inserted into and removed from sockets in a doorway frame by turning angularly as the rail assembly moves horizontally. A pressure responsive locking mechanism engages the sprockets to prevent their turning when the sterilizer is above a predetermined pressure. Cables carried by the locking bars actuate a switch in an alarm circuit for indicating that any one or more bars is not engaged properly in its respective socket. Limit switches stop operation of the motor when the rail assembly reaches extremes of inward and outward movement.

Abstract: A locking device for a container lid closing the open top of a cylindrical container having a radially inwardly opening annular recess. The locking device includes a central hand-controlled vertically reciprocable operating rod connected to the lid, with radially projecting connecting rods connecting the reciprocable operating rod with corresponding elastic latch members normally seated in the annular recess in the locking position. The raising of the operating rod and connecting rods by the handle control mechanism flexes the elastic latch members radially inward to disengage the recess and permit withdrawal of the lid from the container.

Abstract: A quick opening hatch for use on a transfer tube of a nuclear reactor plant that is adapted to replace the conventional hatch on the transfer tube. A locking ring is provided with a plurality of screw openings that is adapted for connection to the transfer tube, and a hatch cover fitably received within the locking ring for closing-off the transfer tube. To lock the cover to the ring, latches are movably connected with the cover for locking engagement with the locking ring, and a sprocket with a plurality of crank arms is movably connected with the cover and the latches for movement thereof into locking engagement with a latch housing on the locking ring for locking the cover to the ring and out of engagement with the latch housing for releasing the cover from the locking ring so as to permit removal of the hatch cover from the locking ring to provide access to the transfer tube.

Abstract: A tamperproof, moisture proof data readout enclosure is comprised of a base plate adapted to be secured to a support structure and has channels formed in its rear surface. A cover adapted to be secured to the base plate has a sealing lip in its interior which cooperates with a seal on the base plate to provide a chamber within the enclosure which is sealed from the exterior environment when the cover is mounted on the base. The cover also has a peripherally extending wall which extends rearwardly from the front surface of the base plate and overlies the ends of the channels when the cover is secured in position. Openings are provided in the wall which register with the ends of the channels and locking pins are provided which project through the openings and the channels to prevent the removal of the cover from the base. Holes are provided on the locking pins to accommodate wires, the ends of which are sealed together to prevent removal of the locking pins without destruction of the integrity of the seal.

Abstract: A closure member for a pressure vessel having a ring assembly that has a radially expansible outside diameter and an inside diameter defining a central area, with the central area of the diameter greater than one-half the outside diameter, and with the ring assembly selectively engaging the pressure vessel between a locked position and an unlocked position.

Abstract: A manually-operated device assembled to the underside of the cover or lid which usually accompanies the purchase of a common household refuse or "garbage" can, said device consisting of a group of spring-loaded rods or bars whose ends are so formed as to fit into the circumferential recess or beads which are part of said can and provide stiffening at the top of the can, said rods or bars being moved into a locked position within the can's recess by depressing an external handle to which is fastened tapered rods projecting inside the cover, said tapered rods contacting a certain portion of the lock rods, and also by pulling up the handle said rods will allow the lock rods to retract from the can's recess and permit removal of the cover.

Abstract: The invention concerns a container (1) for receiving rubbish, with a closure plate (3) disposed on an end, which plate can be mated with a rubbish injection device (4) having a hopper (5) and a ram (6). The closure plate (3) is made in two parts, the upper part (8) limiting a free space being vertically movable, and the lower part (9) limiting the filling opening being horizontally movable. The lower part (9) of the closure plate (3) can be connected with the face (16) of the ram (6) and thus serves as a front plate of the ram (6).

Abstract: The present invention provides apparatus which operates the door of a chamber that is capable of maintaining pressure within the chamber. The invention includes an improved closure for cooperating to move the door among positions in which it confronts the opening of the chamber, seals the chamber and allows access to the interior of the chamber. The preferred embodiment of the present invention includes a driving member and an operating member which have surfaces which cooperate to move the operating member in two separate directions. Movement of the operating member in the first direction secures the door in its position in which it confronts the chamber opening but in which it cannot seal the chamber. Movement of the operating member in the second direction causes the door to be secured against the perimeter of the chamber opening, thus sealing the chamber against fluid flow from between the perimeter opening and the door.

Abstract: A self-locking sealing plug having first and second cylindrical body members of the same diameter and mounted one to the other for relative movement, the first body member having a pair of radially-extendable slides at an end thereof with a spring member therebetween urging the slides outwardly, retaining pins on the second body member for holding the slides in a retracted position within the perimeter of the first body member and releasable by separating movement of the body members, a sealing flange on the second body member, and connecting structure for drawing the body members toward each other to decrease the distance between the extended slides and the sealing flange and with such movement bringing the retaining pins into engagement with the slides to hold the slides extended.

Abstract: A device for use in connection with tapping off fluid from or filling fluid into a container comprises a bell-like housing which is adapted to be removably mounted with an open end thereof over an internally threaded tapping or filling hole in a wall of the container and which is provided with an opening through which fluid may be fed into or discharged from the housing, and a tool for manually operating an externally threaded generally cup-shaped closing plug for said hole, from a position outside the housing. Said tool comprises a shaft which extends slidably and rotatably through a portion of the housing opposite to the open end of the housing, handle means provided at an outer end of said shaft.

Abstract: A can top sealer includes a locking cap and ratchet plate which includes ratchets adapted to be shifted into engagement with the can below the can lip upon turning of the cap in one direction relative to the plate. Upon reverse movement the ratchets are retracted to free the sealer from the can. A gasket is included for purposes of completing the hermetic seal while a retaining ring maintains the parts in an assembled condition.

Abstract: A flange closure formed of a flange body having a cylindrical opening therethrough and having in the opening a concentric internal groove, a cylindrical closure plate for removably closing the opening in the flange body, the closure plate being removable and sealably positionable in the flange opening, a pair of cam plates each hingedly affixed to the closure plate, each of the cam plates having a peripheral edge portion configured as a segment of a circle substantially equal to the diameter of the flange internal groove, and a cam plate actuator removably attachable to said closure plate, the cam plate actuator engaging said cam plates, the actuator is rotated in one direction to forceably retract the cam plates so that the segmented circular edges are within the diameter of the closure plate and when the actuator is rotated in the other direction to extend the cam plates so that the semi-circular edges extend within the flange groove to retain the closure plate in position within the flange opening.

Abstract: A trash receptacle comprising an elongate can with a horizontal bottom wall and a vertical cylindrical side wall with an upper annular rim defining an open top in the can, a disc-shaped lid with an annular skirt depending therefrom and normally overlying the open top of the can. The lid has a flange radially inward of the skirt defining an annular downwardly opening channel in which said rim is normally engaged. Said upper rim is formed to define a radially outwardly projecting annular shield normally underlying and shielding the lower edge of said skirt, a radially inwardly disposed annular stop surface spaced radially outward from said flange and a downwardly disposed annular stop shoulder above said stop surface.

Abstract: A container assembly comprises an open top container and a cover adapted to be aligned and releasably locked on top of the lower container. The lower container has outwardly extending opposed grooves in its inner side walls and the cover has a locking member mounted in its central opening and movable between unlocked and locked positions for releasably locking the cover in aligned position on top of the lower container. The locking member has a pair of opposed outwardly extending flanges cooperating with the bottom container opposed grooves for locking the cover and the lower container upon rotation of the locking member. A handle is mounted on the locking member above the cover for rotating the locking member between its unlocked and locked positions.

Abstract: A lid and locking system therefor at one end of an ammunition container with an outer shell is made up of a ring fixed on one end of the shell, a lid seated within the ring, a lock spider with the end of its legs taken up in openings in the ring, and a screw, supported by the spider, for forcing the lid against the ring. The lid has a castellated cover on its outer side. The segments of the cover, answering to its castellated form, come to an end in a plane at the end of the locking ring and are somewhat smaller in diameter than the diameter of a circle running through inner ends of ribs on and within the locking ring.

Abstract: A nestable bulk container made of metal, plastic, wood or combinations thereof, of frustum-like shape and conical, rectangular or square walls. The top of each container has a reinforcing plate therearound forming a rim which includes a lifting lug. Each container has a lid adapted to fit in the rim when the container is in use, the lid having ribs, and closure parts passing therethrough and adapted to engage openings in the rim. The main application of the invention is a returnable container for the shipping of bulk goods with each container having a 1/4 ton to four ton capacity.

Abstract: A high-security fill cap is adapted for releasable attachment to the open end of a fill pipe, connected to an underground fuel storage tank or the like. The fill cap comprises an annular cap, a plurality of latches pivotally mounted on the cap for movement between latched positions engaging the pipe and unlatched positions disengaging the pipe, an actuating mechanism, including a handle, for moving the latches between their latched and unlatched positions in response to reciprocal movement of the handle, and a key lock secured centrally within the handle to selectively rotate a cam plate thereof between its locked and unlocked positions beneath the cap.

Abstract: Apparatus is described for releasing a storage container from an inflatable upport such as a parachute, comprising a container for holding the inflatable support, an attachment mechanism extending through the container, linear slide means engaging the attachment mechanism and a storage container when tension is applied to the attachment mechanism, and means for holding the attachment mechanism in tension until the inflatable support is inflated, whereby the storage container remains fixed to the inflatable support until tension on said attachment component is relieved.

Abstract: This invention is a trash can lid working in combination with a trash can wherein the lid is made to be easily removable, yet at the same time virtually completely non-removable by accident such as a trash can falling over or by purposeful attempts to remove the lid as by dogs, small children, and the like. This is accomplished by providing certain apertures in the lid aligned with the handles of the lid and the trasch can and providing cooperative loop arrangements affixed to the can and cooperative with the apertures, and with the utilization of draw bolt type apparatus on the lid which is easily cooperative with the loops so as to hold the can lid in place, but likewise, may be immediately withdrawn and held in a withdrawn position when not to be desired to firmly affixed.

Abstract: A tubular obturator for use with a hollow body e.g. a pipeline or cylindrical container, terminating in a cylindrical opening for closing the opening when it is desired to subject the body to a pressure test, comprises a cover, the diameter of which is slightly smaller than that of the opening of the body to be tested, and a cylindrical skirt extending from the cover and comprising a plurality of strips.

Abstract: A closure assembly comprises a closure body adapted to be disposed in an opening in a structure. A closure body has a spirally disposed groove provided therein. A retaining member is made to be flexible for movement within the groove. Apparatus is operably connected to the closure body for moving the retaining member through the groove to a position wherein a portion of the retaining member engages the structure. The retaining member is further made of a size and material having sufficient shear strength to prevent movement of the closure body when the pressure applied thereto generates a force against said retaining member.

Abstract: A closure for a chamber having an interior which can contain a fluid under pressure provides apparatus for latching the door of the chamber in its closed position and locking it in that position when the positive pressure within the chamber reaches a predetermined level. The closure includes a door that is moved by positive pressure within the chamber and, through appropriate mechanisms, activates locking apparatus that prevents the door from leaving its closed position as long as such pressure is present within the chamber.

Abstract: A closure arrangement for a pressure vessel such as the pressure vessel of a high temperature gas-cooled reactor wherein a liner is disposed within a cavity penetration in the reactor vessel and defines an access opening therein. A closure is adapted for sealing relation with an annular mounting flange formed on the penetration liner and has a plurality of radially movable locking blocks thereon having outer serrations adapted for releasable interlocking engagement with serrations formed internally of the upper end of the penetration liner so as to effect high strength closure hold-down. In one embodiment, ramping surfaces are formed on the locking block serrations to bias the closure into sealed relation with the mounting flange when the locking blocks are actuated to locking positions.

Abstract: A fuel tank cap includes a ball cage centrally depending from a fuel tank cap body, said ball cage having a plurality of tank neck engaging balls located in a plurality of side openings through which the balls are selectively urged. A plunger cone within the ball cage is slidable between a first position where it urges the aforementioned balls outwardly for locking the cap to the fuel tank neck, and a second position allowing inward movement of the balls within the ball cage and removal of the cap from the fuel tank neck.

Abstract: Discloses is a safety hatch cover apparatus illustrated as used on a tank of a tank-carrying vehicle such as a gasoline truck. The apparatus comprises a base member attached to the tank and having an opening adapted to be closed by a hatch cover hinged to the base member. The hatch cover carries a latch bar rotatable about an axis perpendicular to the base member and adapted to engage keeper members fixed to the base member adjacent the hatch opening. The latch bar carries a cam which turns with the longitudinal axis of the latch bar and engages biasing means carried by the cover. The biasing means, cam, latch bar and keeper members cooperate to close the cover yet permit the cover to lift in case of excess gas pressure in the tank. The apparatus also includes safety means adapted to engage the latch bar to restrain it from moving from its position in which it engages the keeper members, whether or not the cam is turned to cause the latch bar to be in locked position.

Abstract: A device for use in connection with tapping off fluid from or filling fluid into a container through an internally threaded tapping or filling hole in the container provided with an externally threaded generally cup-shaped plug having an outwardly open cavity in which a tool may be inserted for rotating the plug. The device comprises a bell-like housing and a tool for manually operating the plug from a position outside the housing. The tool comprises a shaft which extends slidably and rotatably through a portion of the housing opposite to the open end of the housing and which is provided with a handle at its outer end and with a plug holding and operating means at its inner end. The latter means includes an expansion mechanism adapted to be expanded into contact under pressure with portions of the side wall of the cavity of the plug upon insertion of the plug holding and operating mechanism into the cavity.

Abstract: A lid catch on a container driven with superpressure is disclosed. A prestressed spring catch bolt is held in an engaged position due to the pressure exerted on an inner lid of the container which is transmitted by a counterpoise to the bolt. Therefore, releasing of the lid when the container is pressurized is impossible.

Abstract: The enclosure comprises a base having perimetric side walls and a cap having coaxial perimetric side walls. The cap and the base have a major axis and a minor axis. A longitudinally extending locking bar is rotatably mounted in the center of the cap and has a length slightly greater than the minor axis of the base. The cap and base have coextensive slots formed in opposing walls which slots start at points on opposite ends of the minor axis and extend in the same direction peripherally about the cap and base for approximately 45.degree.. The portions of the slots on the opposite ends of the minor axis have a thickness which is approximately twice the thickness of the locking bar. The remainder of the slot has a thickness which is approximately equal to the thickness of the locking bar. In this manner, when the locking bar is rotated into the slot, it will proceed through the single thickness area and be biased into the double thickness area where it will be held against further rotation.

Abstract: Means for hinging or removably attaching a cover to a chassis comprising a retainer device including a pair of arms spring-urged away from one another. The retainer device is fixed to the chassis with the ends of the arms extending outward into openings in the cover. The arms can be manually pinched to disengage them from the cover openings to thereby permit the cover to be removed from the chassis. Utilization of a pair of retainer devices on the chassis enables one of the devices to be disengaged while the other remains engaged to thus hinge the cover relative to the chassis.

Abstract: The sealing cap of a packaging drum is retained in releasable assembly with the drum, during empty transport condition, by a retainer which functions in first part to restrain movement of the retainer and the sealing cap axially of the neck of the drum and in second part to restrain movement of the retainer transversely of the neck.

Abstract: A closure for a pipe or pressure vessel comprises a door adapted to fit into an aperture in a pipe or pressure vessel and an arcuate locking member disposed around the periphery of the door for locking the door to the pipe or pressure vessel, the ends of the locking member being movable towards and away from each other to cause radial expansion and contraction of the locking member, whereby the locking member is brought into and out of locking engagement with the pipe or pressure vessel. A seal for the closure comprises a rigid, usually annular, support having first and second flanges for engaging respective opposed faces on the closure and the pipe or pressure vessel, the first flange having a greater surface area and being less flexible than the second flange, and a flexible lining carried by the support and extending beyond the terminal edges of the flanges.

Abstract: In accordance with the present invention a hatch cover opening and closing assembly is provided including a locking handle having a yoke pivotably mounted about a vertically extending shaft located in the center portion of the cover. The shaft extends downwardly through a guide which depends from the cover. The guide includes at least one generally vertical indexing slot. Below the cover a laterally extending pin and a plurality of radially extending locking arms are attached to the shaft. A plurality of locking lugs are mounted on the internal surface of the coaming. The shaft is rotatable by the handle to move the locking arms into and out of engagement with the locking lugs. However the pin must be located within the indexing slot to move the locking arms vertically into engagement with the locking lugs. When the shaft is rotated so that the pin is located out of the slot, but in engagement with the guide, the handle may be used to pivot the cover about a hinge into open position.

Abstract: The following specification describes a cover for a panelboard with the cover carrying spring biased latch clamp assemblies for engaging the flanges formed on the side walls of the panelboard cabinet.

Abstract: An improved closure assembly for plastic drums is provided which includes female buttress threads formed on a tubular projection of the drum head, and an adaptor inserted into the tubular projection threadably engaging the buttress threads, the adaptor having internal standard pipe threads adapted to receive standard pipe threaded members, like dispensing valves, pump fittings, as well as standard bung plugs. Means are also provided for sealingly isolating the buttress thread inter-engagement to prevent product accumulation therebetween and means are also provided for locking engagement of the adaptor and the tubular projection on the drum.

Abstract: A closure member for a pipe or pressure vessel, comprising a door adapted to fit an aperture in the body of the pipe or pressure vessel, a plurality of blocks slidably mounted adjacent the periphery of the door and movable from a position at least substantially wholly within the said periphery to a position in which a part of each block protrudes beyond the periphery for engagement with the said body, the said parts in the blocks together forming a protrusion extending substantially entirely round the periphery of the door, and means for moving the blocks from the withdrawn to the protruding position.

Abstract: A panel hole closure is composed of a rigid plate having an integral array of resilient fingers projecting from one surface of the plate inboard of the plate rim. A integral stiffener is provided for each finger which stiffens the finger against inward deflection toward the axis of the plate so that once the closure is seated in a panel aperture, it is difficult to dislodge. A plastic sealing ring encircling the plate rim may be melted and flow to provide a fluid-tight seal between the closure plate and panel.

Abstract: A device for coupling a pressure vessel closure cap to an upper structure for supporting the reactor internals comprises a plurality of locking-keys which are guided in translational motion within radially disposed housings and can be moved into outwardly projecting positions by externally-controlled actuating means in order to engage in opposite recesses formed in the internal wall of the closure cap.

Abstract: A cargo container door construction is disclosed. The construction utilizes a relatively thin sheet metal door skin having a plurality of formed-in longitudinally extending stiffener grooves, with the door edge parallel to the grooves being formed into stiffener edges comprising a lip with a recess on its inner side. One such edge supports hinges which connect with a surrounding frame of a cargo container. The two remaining edges of each door lying perpendicular to the grooves, are each stiffened by an elongated bar and plate which are welded continuously to the edge of the skin and which form closed end walls on the grooves. The bar and plate establish edges which are similar to the lip and recess formed edges and the sides of the door, so that a uniform peripheral edge results. The lip and recess at each edge seat a gasket for sealing the door or pair of doors with a cargo container frame.

Abstract: Improvement in a safety container for medicine having a cap and bottle, the cap constructed in relation to the bottle such that in one position thereof the cap can be lifted off the bottle and in another position thereof the cap cannot be removed from the bottle, the improvement comprising a detent associated with the cap, the detent moveable in respect to the cap and having a lock and unlock position in respect thereto, a cooperative arrangement on the bottle capable of engaging with the detent to lock the cap on the bottle, and a manually actuable handle on the cap capable of moving the detent between lock and unlock positions thereof the detent being flexible, the handle operative during actuation thereof to flex the detent to move it between its lock and unlock positions.

Abstract: A plug for closing an aperture in a panel comprising a metal plate portion and a plurality of metal legs. The plate portion and the legs can be formed from different materials having different characteristics. Each leg comprises an attaching portion which attaches the leg on the plate portion and a mounting portion which depends from the plate portion. The legs are so shaped and positioned that they are co-operatively snap-engagable through the aperture in the panel to mount the plug in the aperture. The legs and the plate portion are manufactured separately and subsequently assembled. A sealing ring having a channel shaped cross-section is optionally attached to the periphery of the plate portion so as to overlie the upper and lower surfaces of the periphery of the plate portion.

Abstract: A panel hole closure is composed of a rigid plate having an integral array of resilient fingers projecting from one surface of the plate inboard of the plate rim. A integral stiffener is provided for each finger which stiffens the finger against inward deflection toward the axis of the plate so that once the closure is seated in a panel aperture, it is difficult to dislodge. A plastic sealing ring encircling the plate rim may be melted and flow to provide a fluid-tight seal between the closure plate and panel.