Abstract: A system for fastening a cover to a body of an explosion-proof enclosure using a plurality of fastening devices. Each fastening device can include a first load distributing member disposed on a body flange of a body of the explosion-proof enclosure, and a second load distributing member disposed on a cover flange of a cover of the explosion-proof enclosure. A fastening device can also include a securing member having a top end disposed on the first load distributing member and a bottom end disposed on the second load distributing member. A fastening device can further include a cam rotatably coupled to and positioned atop the first load distributing member.

Abstract: Receptacle locking devices are disclosed. A receptacle locking device having a contact arm and a pivoting feature can be pivoted from a first, unlocked position to a second, locked position, wherein the contact arm prevents opening of the receptacle door when the locking device is in the second, locked position.

Abstract: The drive unit includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, two juxtaposed tracks disposed around the housing along its longitudinal axis and enabling the drive unit to move when the tracks are rotatably driven around the housing, and at least one track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the corresponding track. The unit can also include a ventilation circuit for the interior of the inner chamber of the housing, and a generator for producing electricity. The drive unit can be manufactured from a single housing or with the housings of two apparatuses that are juxtaposed and rigidly paired.

Abstract: A cover assembly for a spa having a base and a shell supported by the base is provided. A cover assembly includes a cover member selectively movable between a covered position and an uncovered position, and a lifting assembly configured to effect movement of said cover member between the covered position and the uncovered position. The lifting assembly includes a first lifting arm and a second lifting arm. The first lifting arm is pivotally and slidably coupled to the base at a first end thereof and pivotally coupled to the cover member and to the second lifting arm at a second end thereof.

Abstract: The object of the invention is an apparatus for locking an underwater hatch or other removable or turnable structure (6) in a vessel or other floating structure, which comprises at least a locking rod (2), that is attachable in an articulated manner to the hull (7) or other structure of the vessel or other floating structure and which locking rod is, at its second end (2?), arrangeable in connection with a surface of the lockable hatch or other removable or turnable structure (6), a turning mechanism (3) of the locking rod (2), which comprises at least a first part (3?) and a second part (3?), which are, at their first ends, attached to each other in an articulated manner, and of which a second end of the first part (3?) is arranged in connection with the locking rod (2) in an articulated manner and a second end of the second part (3?) is attachable in an articulated manner to the hull (7) or other structure of the vessel or other floating structure, and an actuator (4) that is arranged in connection with the

Abstract: A device for setting the position of a closing element for a porthole in an open position toward the outside around an opening in a wall of a room includes a protruding part with a circular shape fastened to the wall around the opening by means of at least one fastener, and a joining part that has a first end connecting a hinged end of the closing element to the protruding part. The protruding part has at least one first groove. The joining part has a second end movable in the at least one first groove, and the movement of the second end in the at least one first groove entails movement of the closing element in the open position around the opening. In a closed position, the closing element integrally covers the protruding part in order to seal the porthole in the closed position.

Abstract: System for evacuation of personnel from a capsized vessel via a lockable escape hatch (103) in the bottom of said vessel, characterized in that the system comprises a first lockable escape hatch (105), said first lockable escape hatch (105) leads to an evacuation room (107), said room (107) is provided with a second lockable escape hatch (103), said room (107) is illuminated by lamps (201) receiving energy from a battery pack (202) not connected to the said vessel's energy system, said first and second lockable escape hatch (103, 105) cannot be opened simultaneously, in relation to said first lockable escape hatch (105) it is connected a device (106) for climbing, said climbing device (106) unfolds when the said vessel has a lopsidedness in excess of a pre-determined number of degrees.

Abstract: Fasteners, cover systems, and related methods are provided. A fastener for fastening an item in place on an object can include a bottom member having a first cross-sectional shape and a top member having a second cross-sectional shape that is securable to the bottom member. The top member can be rotatable relative to the bottom member once the top member is secured to the bottom member. The fastener can also include a securement device for fastening the bottom member to an object. The fasteners can be part of a cover system that also includes a cover. The cover system can be used in conjunction with a window, such as a boat hatch.

Abstract: A personal watercraft system includes a watercraft, a frame, and a cover. The watercraft includes a deck and a hull and defines a hatch providing access to a cargo hold. The frame is coupled with the watercraft and defines a channel on a side of the hatch and a cavity in communication with the channel. The cover includes a fabric portion and a rod extending along and coupled with a side margin thereof. The cover is secured to the personal watercraft on an opposite side of the hatch. When compression is applied to the rod, the rod flexes to fit within the channel aligning an end of the rod with the cavity. When the compression is subsequently removed from the rod, the rod returns to its original length and the end of the rod slides into the cavity securing the cover to entirely cover the hatch.

Abstract: A boat hull having a door and a method of making the door, which can swing to an open position and closed position. The door can be used for entering or exiting the boat. The door can remain closed with a door lock assembly and door strike. An outer door frame and gussets provide support for the hull and door.

Abstract: An approaching and retaining device, in particular for a boat door, includes a fixed assembly adapted to be associated with a frame and a mobile assembly adapted to be associated with a wing. The fixed assembly includes a nib which can slide freely in a first through hole of the mobile assembly; structure for automatically operating an actuator connected to the nib in a manner to determine an approaching movement of the wing towards the frame and a compression force against an elastic element positioned between the frame and the wing. The mobile assembly includes an external element rigidly secured to the wing; an internal strike adapted to be inserted into a second through hole of the main body, the internal strike including a transversal hole adapted to house the nib; and a threaded pin which allows the internal strike to move relative to the external element.

Abstract: A system and method for actuating a hatch door. One embodiment includes a vertical launcher system that has a hatch door disposed in a plane at the top of a hold. The hatch door includes a leading edge and a trailing edge at opposite ends of the hatch door. When an actuator arm for maneuvering the hatch door is extended, the leading edge is lifted away from the plane by the actuator arm while the trailing edge remains in the plane and slides across the top of the plane toward the point where the leading edge was first lifted away. Such a sliding hatch mechanism allows for quick opening and closing of a hatch door while providing more efficient use of mechanical energy for breaking ice build up or prevent intrusion.

Abstract: A personal watercraft system includes a watercraft, a frame, and a cover. The watercraft includes a deck and a hull and defines a hatch providing access to a cargo hold. The frame is coupled with the watercraft and defines a channel on a side of the hatch and a cavity in communication with the channel. The cover includes a fabric portion and a rod extending along and coupled with a side margin thereof. The cover is secured to the personal watercraft on an opposite side of the hatch. When compression is applied to the rod, the rod flexes to fit within the channel aligning an end of the rod with the cavity. When the compression is subsequently removed from the rod, the rod returns to its original length and the end of the rod slides into the cavity securing the cover to entirely cover the hatch.

Abstract: A hatch mechanism for releasably securing a hatch to a deck of a vessel may include a latching mechanism comprising a housing extending generally outwardly from a bottom surface of the hatch. The latching mechanism may also comprise a strong back disposed within a opening in the housing and extending generally parallel to the bottom surface of the hatch. Upon application of a pressurized fluid, an actuator may be configured to bias a wedge against the opening in the housing and the strong back such that the wedge urges the strong back towards the bottom surface of the hatch. A method of releasably securing the hatch to deck may comprise providing a source of a pressurized fluid and applying the pressurized fluid to a latching mechanism to releasably secure the hatch to the deck.

Abstract: A latch assembly includes a housing assembly having a thru-bore, a handle assembly selectively pivotally engaged with the thru-bore of the housing assembly, wherein the handle assembly includes a handle and a base portion; and a catch assembly selectively engaged with the handle assembly, wherein the handle assembly selectively rotates about the catch assembly to latch and unlatch the latch assembly when the latch assembly is in a closed position.

Abstract: An article storing structure for a small boat capable of easily carrying out the opening operation of a lid without spending time and effort and capable of easily taking luggage in and out. The article storing structure includes an article storing box for storing luggage in the hull and a lid covering an opening of the article storing box from above. The article storing structure includes left and right hinges provided at the left and right sides of the lid, respectively, for supporting the lid so as to be freely opened and closed and left and right lock members provided at the left and right sides of the lid, respectively, and capable of releasing the left and right hinges in the engaged condition, respectively. By releasing one of the left and right hinges in the engaged condition by the lock member, the lid can be opened and closed laterally.

Abstract: A boat having a deck with a deck locker is disclosed herein. The deck locker includes a compartment mounted beneath the deck, and an opening in the deck for accessing the interior of the compartment. The locker also includes a lid for covering the opening in the deck. The locker further includes a latching arrangement for releasably securing the lid in a closed position covering the opening. The latching arrangement includes a striker mounted to the lid and a latching member and actuator mounted offset from the lid.

Abstract: A novel hatch and with cover for boats comprising: a hatch, a hatch cover with handle hinged to said hatch, and cooperating means on the hatch and cover including cam surfaces whereby the said handle can be rotated to secure the cover to the hatch.

Abstract: A hatch or door system for closing an opening in a surrounding structure has a panel assembly having a metal frame enclosing a composite material panel. An operating mechanism is operative in a first stage to hold the panel assembly in the closed position. In a second stage, a discrete-to-continuous latching mechanism of the operating mechanism seals the frame within the opening.

Abstract: A cover plate removal tool including an elongate solid unit having a hollow longitudinal track having an end portion including a cylindrical recess having an axis transverse to a longitudinal axis of said track. The cover plate removal tool also includes a plurality of solid pegs securable perpendicular within said track. The pegs are slidable back and forth within said track. The removal tool includes a solid cylindrical element having a lower portion proportioned to fill said cylindrical recess and further proportioned for complemental fit within said track.

Abstract: An apparatus having at least one paw hingedly attached to a compartment side of a lid configured for covering a hatch of a compartment. At least one catch is positioned on a wall of said hatch for engagingly receiving the at least one paw. A spring is positioned for urging engagement of the paw with the catch. The paw includes an angled portion which, upon closing of the lid, rotates the paw to allow the lid to be closed over the hatch and the paw to then engage the catch. A user may rotate the paw to disengage the paw from the catch, to thereby open the lid.

Abstract: A seal for a pivotally mounted door, which is arranged to close off a load area on board a ship and is provided with sealing elements around the periphery of the door and exhibits battening jacks that are caused to move to batten down the door to the deck and bulkhead or parts thereof. A sealing element pivotally supported along the top and/or bottom edge of the door is capable of actuation by a number of the battening jacks causing it to be moved into a sealing (SP) position along the top and/or bottom edge of the door against a contact surface.

Abstract: An access hatch reinforcement module and a method of assembling an access hatch to an existing engine compartment hood of a vehicle. The access hatch reinforcement module includes a wall engagement component for engagement to the hood outer wall of the engine compartment hood. The access hatch reinforcement module further includes a door engagement component for engagement to a hatch door of the access hatch. The wall engagement component and the door engagement component of the access hatch reinforcement module are directly fixedly engaged to one another by temporary fixed engagements. The wall engagement component and the door engagement component are also indirectly engaged to one another through operational door connecting components such as a hinge component.

Abstract: The present invention discloses a system for controlling environmental conditions in connection with ceiling hatch use particularly on watercraft. The invention generally comprises a support platform, a means for suspending the support platform, a water diversion conduit cooperatively associated with a water exhaust aperture in the support platform, and a water collection and containment structure for collecting and containing fresh water. The platform is suspended from a watercraft hatch for capturing and diverting water away from the watercraft hatch, yet allows continual airflow, heat exchange and filtered light to enter the hatched cabin. The means for suspension includes a means for easily removing the platform from the path of egress through the watercraft.

Abstract: A hatch assembly for a marine vessel included a slam latch and a frame and a cover having the slam latch disposed therein. The slam latch includes a housing having inner and outer portions and a pivotal handle for rotation between open and closed positions. A reciprocal fastening element including a second cam surface is adapted to engage the frame for retaining the cover against the frame. A spring biases the handle into a closed position and together with the first cam surface maintains the handle in an opened position when the handle is rotated through a predetermined angle. The latch also includes a push rod for converting the rotation of the handle to the reciprocal movement of the fastening element. The latch also includes a pair of seals to prevent water from passing through the latch.

Abstract: A lock device of a cover, especially of a hatch cover of a personal watercraft, having operation members disposed on a lower surface of the cover which is locked by an engagement with a hold pin and is released by a releasing operation of the operation members. The locking device includes a frame member having operation members located at both sides of and under the lower surface of the cover. The frame member further includes, a pair of slide members each of which slides in a direction away from the operation member by the releasing operation of each of the operation members, a moving member which is caused to move in the direction perpendicular to the sliding direction of the sliding members in response to the sliding movement of either one or both of the slide members, and an engaging member which moves together with the moving member to move into an engaging hole for engaging the hold pin.

Abstract: A portable barge cover protects cargo in the hold of a barge from contaminants such as water, snow, dust, bird droppings and the like. The portable barge cover provides a removable and storable covering system that is readily assembled by three or four barge workers. Several overlapping flexible sheets are placed over spaced apart arched members which span from one side of a hold to the opposite side of the hold. The flexible sheets are secured by several straps that cross over the flexible sheets trapping the sheet between the strap and the arched member.

Abstract: The door, hatch or other closure in a marine vessel includes a large central window, and is manually or mechanically latched or unlatched by a quick-acting actuation mechanism. An outer handle or an inner handle is rotated, thereby pulling a chain that engages each of a plurality of sprockets. As the chain is pulled, each of a plurality of dogs rotate to engage or disengage a corresponding number of strikers attached to a jamb. Sprockets having different diameters may be utilized to vary the rate of rotation of different dogs and to vary the force applied to different dogs. The position of dog is visually identifiable from the position of the handles.

Abstract: The door, hatch or other closure in a marine vessel includes a large central window, and is manually or mechanically latched or unlatched by a quick-acting actuation mechanism. An outer handle or an inner handle is rotated, thereby pulling a chain that engages each of a plurality of sprockets. As the chain is pulled, each of a plurality of dogs rotate to engage or disengage a corresponding number of strikers attached to a jamb. Sprockets having different diameters may be utilized to vary the rate of rotation of different dogs and to vary the force applied to different dogs. The position of dog is visually identifiable from the position of the handles.

Abstract: The door, hatch or other closure in a marine vessel includes a large central window, and is manually or mechanically latched or unlatched by a quick-acting actuation mechanism. An outer handle or an inner handle is rotated, thereby pulling a chain that engages each of a plurality of sprockets. As the chain is pulled, each of a plurality of dogs rotates to engage or disengage a corresponding striker attached to a jamb. Sprockets having different diameters may be utilized to vary the rate of rotation of different dogs and to vary the force applied by different dogs. The position of dog is visually identifiable from the position of the handles.

Abstract: A railroad car hatch cover assembly includes a ring which defines an opening in the railroad car body and a peripheral seal which is attached to the ring. There is a hatch cover for closing upon the ring and seal to close the car body opening. The hatch cover is hinged to the car body adjacent one side of the ring and on the opposite side there is a cam lock assembly which locks the hatch cover in a closing position upon the ring and seal. The cam lock assembly provides for three different locking positions. There is a full locked position in which the hatch cover is closed upon the ring and seal. There is an initial hatch cover release position in which the hatch cover is movable a limited distance away from the ring and seal. There is a full release position in which the cam lock permits full pivotal movement of the hatch cover about the hinge.

Abstract: A positive-action device for bringing about the rotary movement of a hatch, as a result of the traversing stroke of a shaft moving axially within a fixed structure, particularly in submarine turrets, includes an actuating component integral with shaft and moving with the latter in a direction parallel to the longitudinal axis of the shaft, and an articulated kinematic mechanism the upper end of which is hinged to hatch with an interposed flexible safety device and the lower end of which is rotationally integral with a regulating component rotating around the axis of a fixed pivot, there being associated with the regulating component a mechanism of bistable type for reliably maintaining the settings corresponding to the open and closed positions of the hatch, and end-of-stroke devices.

Abstract: The door, hatch or other closure in a marine vessel includes a large central window, and is manually or mechanically latched or unlatched by a quick-acting actuation mechanism. An outer handle or an inner handle is rotated, thereby pulling a chain that engages each of a plurality of sprockets. As the chain is pulled, each of a plurality of dogs rotate to engage or disengage a corresponding number of strikers attached to a jamb. The position of dog is visually identifiable from the position of the handles.

Abstract: A cover plate assembly for covering an access opening formed in a boat deck includes a cover plate for covering the access opening and engaging the exposed side of the deck which frames the access opening. A resilient O-ring gasket carried on the underside of the cover plate is compressed by the cover plate against the exposed surface of the deck. The cover plate and resilient seal are held in place by a retainer bar which is inserted through the access opening and engages the hidden side of the deck on opposite sides of the access opening. The cover plate is coupled to the retainer bar by a screw fastener which has a torque shaft and a manually operable handle. The torque shaft has a threaded shank coupled in threaded engagement with the retainer bar, and the torque shaft projects through the cover plate with the handle engaging the exposed side of the cover plate.

Abstract: A waterproof fabric awning is tied to the hinges at the back of a boat hatch and suspended forward over the hatch. Flexible ribs form it into the shape of an arch in function but allow it to be rolled up compactly for storage.

Abstract: A cover for a hatch which will engage with a rim to produce a water tight seal. The hatch cover includes a plate capable of seating in the rim and a shaft extending vertically through an aperture in the plate and slidably received therein. A handle is located on one side of the plate, one end of the handle pivotally connected to the shaft so that the handle will move from a closed position parallel to the plate to an open position substantially perpendicular to the plate. The handle imparts vertical movement to the shaft with respect to the plate. Arm assemblies extend radially outward from the shaft on the side of the plate opposite the handle, whereby movement of the handle imparts movement to the arm assemblies thereby extending the arm assemblies to engage the rim.

Abstract: A pivoting hatch cover and strap assembly has an overcenter latch assembly which is pivotably mounted upon the car roof at a location opposite the common hatch cover and strap pivot axis. This latch assembly includes a bifurcated overcenter locking handle which has a pair of cam surfaces which in closed position engage spaced wear plate surfaces located on the strap. A tab is located on the wear plate adjacent to but outboard of the cam surface on the operating handle. The tab makes a sufficient angle with the horizontal and extends upwardly and outwardly from the cam surface a distance sufficient to prevent the cam portion of the operating handle from moving longitudinally, and disengaging from the strap until pressure within the car is dissipated and thus prevents the strap and cover flying open.

Abstract: A lid for a vehicle roof opening including a linkage hinging it to the roof structure to accommodate tilting of the lid upwardly in either of two directions, or elevating it bodily, for use of the opening to ventilate the vehicle and including provision for separating the linkage from the roof supporting structure to permit swinging the lid to a fully open position relative to the roof opening to provide an escape hatch.

Abstract: An insert for a hold down bar which serves to hold down adjacent hatch covers of a railroad hopper car. The hold down bar includes an inverted channel, and the insert includes a rigid bar which carries a resilient gasket. The bar can be bolted in the channel with the gasket located to seal against the end of the hatch cover when the hold down bar is located down on the cover. The insert is used when an older hatch cover having a rain bar is replaced by a replacement cover that lacks a rain bar. The insert occupies half of the channel so that a second identical insert can be added if two adjacent hatch covers are replacement covers without rain bars.

Abstract: A cast aluminum hatchway cover has projecting hinge structure for mating with a hinge housing part affixed on a hatchway coaming. The hinge is detented for holding the cover in closed, partly open and fully open posture. Self-latching lock structure has a foot operable unlocking lever outside the hatchway and an emergency unlocking lever inside the hatchway. The hinge detenting mechanism comprises cams with mating elements located respectively on the cover and hinge housing part.

Abstract: A hatch cover for closing and sealing a hatch opening has a latching mechanism at one side of the cover which includes a rotatable hub and plural latching arms extending in different directions from the hub towards a rim of the opening. Rotation of the hub in one direction causes the latching arms to engage the rim and tightly latch the cover to the rim while rotation of the hub in the opposite direction retracts the latching arms and frees them from the rim to enable removal of the cover from the opening. A shaft extends through the cover and is axially slidable and rotatable relative to it. The shaft is axially slidable relative to the hub and continuously engages it so that rotation of the shaft correspondingly rotates the hub. A handle fixed to the upper end of the shaft rotates the hub to activate the arms.

Abstract: A container and cover arrangement such as a ship's hold and hatch cover comprises a plurality of cover elements. Hinges are provided for inter-connecting adjacent ones of the cover elements so as to permit pivotal movement of the cover elements outwardly of the container in response to a pulling force. A latching arrangement is provided which comprises an engagement portion on the container and a latch element displaceably mounted on a cover element for co-operating latching engagement with the engagement portion. The latch element is displaceable in response to said pulling force prior to movement of the cover elements to permit release of engagement between the latch element and engagement portion.

Abstract: A hatch cover having a locking mechanism comprising a single hand wheel with a shaft threaded to the cover for limited up and down movement as the hand wheel is turned. A locking strap is hinged on one side of the hatch cover, releasably locked on the other side and has an opening through which the shaft extends. The locking strap is confined between the hand wheel and a thrust washer attached to the shaft in such a fashion that rotation of the hand wheel in one direction produces contact between the locking strap and thrust washer to force the cover downwardly. Rotation in the other direction lifts the hatch cover to permit unlatching of the locking strap and access to the hopper.

Abstract: For protecting cargo in a ship's hold an inverted hatch tent is mounted between a cargo hatch cover and the hatch coaming to thereby define a concave liner below the hatch cover. The inverted hatch tent accoding to the instant invention therefore protects cargo from inevitable water leakage even with the hatch cover in place. Th instant liner further accommodates various hatch opening sizes through a plurality of gripper lines on the underside of a single liner. A further advantageous feature on the instant invention is the provision of a drain line at the apex of the inverted cover to communicate with a drain line which is passed within the hatch along the side wall and down to the ship's bilge.

Abstract: A lid for a vehicle roof opening has linkage hinging it to the roof structure accommodating tilting the lid upwardly in either of two directions, or elevating it bodily, for use of the opening to ventilate the vehicle, including provision for separating parts of the hinging linkage to permit swinging the lid fully open for use of the roof opening as an escape hatch. In a modification, the lid is hinged for tilting in only one direction to a ventilating position or swinging to the full open position in the same direction.

Abstract: A hatch cover for closing and sealing a hatch opening has radial latching arms connected at their inner ends to a rotatable arm-actuating hub on the bottom side of the cover at ball-and-socket connections and loosely connected to the cover near their outer ends. In one rotational position of the hub the arms overlap and apply clamping pressure to the rim of the hatch opening and in a second rotational position of the hub the arm-clamping pressure is released and the arms are retracted from the rim to enable removal of the cover from the opening. The hub rides on camming surfaces of the cover which are shaped so that as the hub rotates in a hatch-closing direction, the arms first extend over the rim of the opening and then pivot into clamping engagement with the rim about their loose connections to the cover, urging the cover through such connections into tight seated engagement with the rim.

Abstract: A hinged hatch cover for the longitudinal hatch opening of a railway hopper car includes a hinged hold down arm which is adapted to be moved into a lock position relative to the hatch cover, the hold down arm including a projecting end portion which is engaged by a manually movable lever slidably supported on a pedestal, the same being engageable with the hold down arm for releasably securing the hatch cover in a lock and sealing position relative to the hatch opening.

Abstract: A hatch assembly for a boat has a hatch cover and a hatch mounting frame to which the cover is hinged by releasable hinges, there being two espagnolette bolts serving the dual functions of hinging and latching the hatch cover to the mounting frame; retraction of either espagnolette bolt at will from an associated hinge receiver on the mounting frame enabling the hatch cover to be swung open left or right handedly, and retraction of both bolts from their receivers enabling the hatch cover to be lifted clear of the mounting frame.

Abstract: A lock hinge preferably, but not exclusively, for use with a hatch cover structure for a transportation vehicle. The lock hinge comprises a latch bracket and a base bracket. The base bracket is provided with a pivot bar. The latch bracket has a saddle member defining a hinge seat with a mouth opening for receiving at least a portion of the pivot bar therein. The latch bracket further is provided with a latch member having a lever end and a gate end. The latch member is interconnected to the saddle member by a flexible plate whereby the gate end is displaceably positioned adjacent the mouth opening of the hinge seat to retain the pivot bar captive in the hinge seat to interconnect both the latch and base brackets. When secured to a hatch cover, which normally closes the hatch opening in a wall of the vehicle, at least one lock hinge is secured on a respective one of a pair of opposed sides of the cover.