Abstract: There is described a vehicle door assembly with shear layer control for controlling the airflow in and around an aperture in the vehicle fuselage. The vehicle door assembly consists of an upper door and a lower door, both slidably mounted to the exterior surface of the vehicle fuselage. In addition, an inner door is slidably mounted beneath the upper door. Beneath the inner door is an aperture assembly having an aperture opening positionable to be substantially flush with the exterior surface of the vehicle fuselage. Also provided are means for positioning the aperture assembly in an upward and downward direction in relation to the vehicle fuselage.

Abstract: A garage (10) generally comprises a pair of side walls (20, 40) that are vertical, parallel and semi-circular, and a peripheral wall (60) spanning between the periphery of the side walls (20, 40) to form an enclosure. The peripheral wall (60) includes a front door (61) and a rear door (71). Front and rear door support paths (30, 35) are located on the inside (28) of each side wall (20, 40) near the wall's peripheral edge. Each door path is parallel, semi-circular and supports a side edge of a door. The front and rear door paths (30, 35) are of different radius such that the door panels may overlap. Latching mechanisms (80), located at approximately midway up on the marginal side (38, 58) of each side wall (20, 40) are moveable to a latching position connecting a door to sidewalls (20, 40) such that the door cannot slide and such that the door prevents the side walls from outward movement at that location.

Abstract: A prefabricated observatory dome structure comprising a base portion constructed from connectable arcuate panels, a rotatable dome constructed from connectable panels and a vertically slidable shutter. The flange design of the base portion provides a water-tight non-caulked wall. A semi-door permits easy access to the observatory structure. The shutter has three sections that slide together using a latching system to slide back to expose more that half of the opening to permit observation at the zenith of the unit.

Abstract: An elevator car, which is used with a curvilinear door that encloses an opening of the car, has a back wall, a first side wall attaching to the back wall, and a second side wall attaching to the first side wall at a point that is away from the back wall. The said second side wall extends from the first side wall towards the front opening. The second side wall is shaped and arranged to allow the curvilinear door to open without touching the car. The car has a floor attaching to a bottom portion of the back wall, the first side wall, and the second side wall, having a curvilinear section extending out the front of said car beyond the second side wall. The curvilinear section cooperates with the curvilinear door to prevent objects from falling therebetween. The elevator car enables an elevator to use center opening doors in a narrow hoistway.

Abstract: An elevator landing, which is used with a curvilinear hoistway door has a lintel, a guide attached to the lintel, the guide having a curvilinear slot having an inner edge and an outer edge for guiding an upper portion of the curvilinear door and, a curvilinear sill having a curvilinear second slot having an inner edge and an outer edge for guiding a lower edge portion of the doors. The first slot and the second slot are in register with each other. The sill slot extends vertically through the sill.

Abstract: Various advances are disclosed pertaining to vertically sliding automobile doors of the type which retract under the vehicle floor to open, and rotate upward to close, and in the elevated closed position become an integral part of the vehicle's structural chassis frame.

Abstract: An elevator drive, which moves an arcuate car door attaching to a support that rotates about an axis, has a motor having an output, an arm attached to the output, and a linkage having a first coupling allowing compound motion attached to the arm and a second coupling allowing compound motion attached to the support, the door moving as the arm rotates in response to motion of the output.

Abstract: A permanent weatherproof blind adapted for use in a variety of hunting or observing situations includes a generally cylindrical, substantially rigid shell sized to resemble a bale of hay. The shell consists of an upper section having a curved outer wall substantially conforming to a cylindrical shape and a lower section adapted to fit within and be supported by a bed of a standard pickup truck. The shell further consists of side walls on both of the upper and lower sections and front and rear walls on the lower section. Included in the curved outer wall of the upper section are one or more game sighting and shooting openings. These openings are covered by movably mounted covers which provide protection for the interior of the blind. Plastic or fiberglass may be used to form the shell.

Abstract: A sliding aircraft door assembly for selectively closing a doorway in a pressurized aircraft fuselage. The door assembly includes a door having a height and width at least as large as the vertical opening of the doorway. At least one elongate supporting and guiding rail is attached to the inner side of the door adjacent each of its upper and lower edges. At least one elongate supporting and guiding fuselage track is attached longitudinally along the length of the fuselage both along the upper and lower edges of the doorway and adapted for slidable interlocking engagement with the rails on the door. The fuselage tracks extend a sufficient distance along the fuselage past the doorway to enable the door to be moved to a position substantially fully opening the doorway.

Abstract: A hollow cylindrical hunting blind that can be supported on the ground or on a tower is formed of elongate arcuate panels and a domed roof which, in a preferred embodiment, have surface corrugations simulating the bark of a tree. A ladder-stand connected to the tower can be easily disconnected from the tower to serve as a leaning tree stand. Lower windows provide a view of the surroundings from a seated position and smaller peep windows above the lower windows provide a view from a standing position. The lower windows slide to cover the window opening in a closed position and completely uncover the window opening in a fully open position, and can be maintained at selective positions between the fully closed and fully open positions. A flexible cable having a control knob located between the windows opens and closes the windows without noise or visible arm movement. The domed roof has a rain channel formed therein to capture and direct rain water downwardly and outwardly between the windows.

Abstract: A latching and locking sliding door construction includes an elongated handle pivotally mounted to the door, the handle including a latch member located along one edge of the handle, the latch member adapted to cooperate with a catch member fixed to a portion of the entranceway. A key lock assembly is mounted in the door and adapted to lock the door in a closed position by preventing rotation of the handle and thereby disengagement of the latch member from the catch member. The lock assembly includes a manually actuable locking cam mounted on the other side of the door which permits the door to be locked and unlocked from inside the cabin independent of the rotational position of the key lock.

Abstract: An apparatus for handling strips of paper removably incorporated in paper strip handling equipment. The apparatus has a box having a window for handling strips of paper, a shutter section for opening and closing the window, a drum section having therein a pooling section for temporarily accommodating strips of paper, and an anti-intrusion portion provided on either one of opposite edges of the shutter section with respect to the opening and closing direction of the shutter for preventing a strip of paper, trash or similar alien substance from being inserted in the apparatus through a clearance formed between the box and the shutter section.

Abstract: A door for an amenity receiving section of a lavatory unit for a passenger airplane formed from honey-comb panels the door having a narrow width length plate and a structure wherein one side edge lengthwise thereof is curved, and a straight rigid rod is secured adjacent to the curved side edge lengthwise of the door and having a spring action for pressing a curved convex portion of the door to exert a spring force on the inside of the receiving section.

Abstract: A rail car end assembly comprises upper and lower tracks for guiding and stabilizing multi-panel rigid doors moving between open and closed positions. End posts are located inside the car and spaced inwardly from respective side wall end portions. The door pass between the space between the end posts and the side wall end portions when moved into the open position. A latch arrangement is provided which latches the door in the open and closed positions. The latch arrangement includes a lower pin engaging a keeper adjacent the lower track, and an upper pin engaging a keeper supported on an elevated platform in the car. The pins are joined by a cable for synchronous movement to lock and to release the doors. Each door has a follower engaging the upper track for guiding the door. In the closed position, the follower engages a stop on the track which reinforces the upper portion of the door against outward movement.

Abstract: The swipe transfer assembly is a mechanical assembly which is used in conjunction with glove boxes and other sealed containments. It is used to pass small samples into or out of glove boxes without an open breach of the containment, and includes a rotational cylinder inside a fixed cylinder, the inside cylinder being rotatable through an arc of approximately 240.degree. relative to the outer cylinder. An offset of 120.degree. from end to end allows only one port to be opened at a time. The assembly is made of stainless steel or aluminum and clear acrylic plastic to enable visual observation. The assembly allows transfer of swipes and smears from radiological and other specially controlled environments.

Abstract: An opening/closing mechanism for use in a circular-arc shaped sliding door including a transverse frame having a circular-arc horizontal sectional shape and mounted on the upper parts of a pair of left and right door bodies; a drive pulley and a driven pulley mounted on the circumferentially one end of the transverse frame and on the other end thereof, respectively; and an endless belt wound between and around the drive pulley and a driven pulley, the pair of door bodies being connected in place to the endless belt so that they may be slidably moved in opposite directions to each other along a pair of left and right guide rails, respectively, each of which is bent in a circular-arc shape concentric with the center of the circular-arc of the transverse door frame.

Abstract: A flexible closure device takes a generally arcuate shape in a closed poson to conform to a curved surface when closing an opening in the surface. The device takes a generally planar shape when in an open position thereby occupying a low amount of storage space.

Abstract: A rail car end assembly comprises upper and lower tracks for guiding and stabilizing mutli-panel rigid doors moving between open and closed positions. End posts are located inside the car and spaced inwardly from respective side wall end portions. The doors pass between the space between the end posts and the side wall end portion when moved into the open position. A latch arrangement is provided which latches the door in the open and closed positions. The latch arrangement includes a lower pin engaging a keeper adjacent the lower track, and an upper pin engaging a keeper supported on an elevated platform in the car. The pins are joined by a cable for synchronous movement to lock and to release the doors. Each door has a follower engaging the upper track for guiding the door. In the closed position, the follower engages a stop on the track which reinforces the upper portion of the door against outward movement.

Abstract: Industrial treatment machines having a rotating vessel, wherein the vessel is driven in rotation via the door for obturating the access opening, so that, by switching on a gear motor, the door automatically closes, while reversal of the direction of rotation of the motor provokes opening of the door.

Abstract: A partition for a corner or circular shower, comprising at least one stationary wall-element adapted to be connected to a wall, at least one guide-rail which on the one hand is connected the wall-element and is carried by the wall-element, and on the other hand, extends over an entrance-area located at one side of the wall-element, and at least one door-element adapted to move along the guide-rail in order to open and close the entrance-area, this guide-rail and the door-element being curved. At least one pivot-lever has one end hinged to the one door-element, and this pivot-lever, in a closed position of the door-element, lies adjacent, behind and substantially in parallel with the wall-element. The pivot-lever has another end remote from the door-element which is secured to the wall-element.

Abstract: A partition, more particularly for a corner shower, contains two door-elements mounted displaceably in an upper guide-rail. In the vicinity of the entrance, the upper guide-rail is curved like the edge of the tub and is connected to two lateral wall elements which are secured to the room and are flat. The purpose of the invention is to achieve reliable sealing and equally reliable guidance combined with a simple design. It is proposed that the guide-rail be curved over its entire length and comprise curved end-parts behind the flat wall-element. No lower guide-rail is provided. Instead, small narrow guide-elements are located outside the entrance.

Abstract: A partition, more particularly for a corner-shower, with a rounded entrance area, contains door-elements by means of which the entrance-area may be closed off or opened. The door-elements are arranged displaceably in guide-rails which are curved in the entrance area and are connected to at least one wall-element. It should be possible to produce a partition of this kind inexpensively and to obtain reliable guidance and accurate alignment of the door-elements with as few components as possible. The door-elements are curved to match the guide-rails and the guide-elements of each door-element is arranged at a predetermined distance from the longitudinal edges. A total of two door-elements is provided and these are curved over an angular range of approximately 45.degree.. They are adjustable in height by means of at least one guide-element, more particularly an eccentric pin.

Abstract: A closure assembly for aerodynamically designed automotive vehicles having body sections with door or displaceable panel apertures formed in generally curved exterior walls and multipart aperture closures such as combinations of solid door panels and windows as well as roof panels which are slidably mounted on the vehicle body section and selectively and rotatably movable within the curved exterior vehicle body wall about the circumference of arcs formed by sections through the exterior wall of the vehicle body between closed and at least partially open positions. Each of the closure parts have a dimension in the direction of rotational movement less than the full dimension of the body aperture so as to be cooperatively capable of filling the body aperture when fully and rotatably extended to a closed position and a unitary reinforcing member on the closure and extending across the aperture to reinforce the body section.

Abstract: A damper for use in controlling the flow rate or direction of a flow of air or fumes flowing out from a room or space or flowing through a ventilation system, including a housing having at least one inlet opening. The housing has a tubular side wall in which are provided a plurality of outlet apertures opened and closed by associated closure members which are adapted to swing to and away from the side wall, preferable inwardly of the housing. The total flow area of the outlet apertures may be extended to a desired degree by increasing the axial length and diameter of the side wall of the housing, whereby the flow resistance and pressure drop across the damper are reduced.

Abstract: A circular door operating method and apparatus comprising two pairs of arcked door leaves, two pairs of arcked fixed panels arranged so as to form an enclosure defining a cylindrical wind blocking compartment. Each door leaf is hinged at an end and releasably coupled at the other end to a hanger assembly traveling on a circular track by means of a pulley mechanism. When a door leaf is released from the hanger assembly to pivot about upper and lower hinge mechanisms for operation as a hinged door, not only the upper and lower hinge mechanisms firmly support the door leaf in place but also a control unit disables the sliding door operation, thus providing a quick and safe escape from the building in the event of an emergency.

Abstract: A cupboard, more particularly for bathrooms and for the accommodation of bath utensils and the like, contains a housing with at least one pivotably arranged door for closing off or exposing an opening. Compact design, reliable operation and simple construction are to be achieved. To this end it is proposed that a second door be mounted to rotate about a second axis of rotation which is at a distance from the first axis of rotation. Each of the two doors which are pivotable in relation to each other, comprises, at the lower and the upper end, a bearing element which is mounted to rotate in the housing bottom and the housing top by means of pins.

Abstract: In a pasta dryer (1) with an insulation cladding encasing the dryer, the side parts of which cladding consist of individual convex wall elements (10) which can be braced in their edge regions against frame parts (13) of the dryer, the wall elements (10) are of convex design in the shape of a cylinder section and the associated frame parts (13) are adapted correspondingly.

Abstract: A retractable roof, for a stadium building, comprising a central arch separating a pair of ungular end segments, one end segment being movable into nesting relationship with the other end segment and the central arch being movable to rest above the nesting end segments, the nesting end segments and the above resting central arch being movable laterally whereby the interior of the stadium is more fully exposed.

Abstract: A mechanism for opening, closing and locking doors with two leaves for cable cars, wherein the two leaves of a car door are controlled at the top and the bottom by a crank lever integral with a control piece movable horizontally in the vertical plane of symmetry of the two door leaves. Each crank lever acts on a horizontal toggle joint with dead point clearance whose links are pivotally secured respectively to levers rotating about fixed vertical axes forming the axes of rotation of the two door leaves, said levers being connected respectively to the radial arms of the door leaves by resilient connections providing locked closure of the leaves even if one of them is held slightly open.

Abstract: A cover apparatus comprising a plurality of peripherally divided and interconnecting cover sections positioned around and outside a plurality of weighing machines, that are arranged in turn in a predetermined array or pattern, the cover sections encircling conjointly the weighing machines in their entirety. The apparatus is so designed that a large space for opening or closing the cover sections is not required and a sufficient open area may be afforded when opened so as to permit the inspection of the weighing machines and other components.

Abstract: A retractable automobile head-light device including a retractable head lamp mounted through a linkage for movement between a retracted position and an extended position. A lamp cover panel is mounted at the rear end portion on the automobile body for vertical movements and twisting movements. A lamp cover driving mechanism includes a pair of driving links each connected at one end to the lamp cover panel through a lug and at the other end to the linkage so that the lamp cover is swingably moved together with the movement of the head lamp between the extended and retracted positions. The driving link at the laterally outboard side is larger in length than the inboard link and the lugs for the links have a difference in length complementary to the difference in lengths of the driving links.

Abstract: A transaction security device comprising a booth of a material and construction capable of selective voluntary entry and involuntary personnel retention and incorporating a transaction interface; entrance means for said booth; a closure for said entrance means, and control means adapted to secure and unsecure at least said entrance means; and cooperating with said booth, disposed, therein, or indeed independent thereof, at least one secondary enclosure adapted to contain apparatus disposed upon at least one turntable within a housing module composed of an enclosure, portions of which are independently rotatable about said turntable and the devices disposed thereon; and means for access to the interior of said housing and with said transaction interface.

Abstract: A combine hopper cover is disclosed. The cover is arched and has raised ribs. A grain inspection door is included and has a flange portion and a recessed portion defining shoulders therebetween. The shoulders form guides for the door to slide along the raised ribs of the arched cover. Stretchable straps hold the cover and the inspection door to the combine hopper.

Abstract: A transaction security device comprising a booth of a material and construction capable of selective voluntary entry and involuntary personnel retention and incorporating a transaction interface; entrance means for said booth; a closure for said entrance means, and control means adapted to secure and unsecure at least said entrance means; and cooperating with said booth, disposed, therein, or indeed independent thereof, at least one secondary enclosure adapted to contain apparatus disposed upon at least one turntable within a housing module composed of an enclosure, portions of which are independently rotatable about said turntable and the devices disposed thereon; and means for access to the interior of said housing and with said transaction interface.

Abstract: A door seal for use on an aircraft in which one portion of a striker (22) is attached to the door (12) and a second portion of the striker (34) is attached to the door frame (14) and in which one portion of a lip (18) for engaging the striker is attached to the door (12) and a second portion of the lip (16) is attached to the door frame (14), the two lip portions (16, 18) being configured to overlap one another and to mate with the two striker portions (22, 34) and with one another when the door (12) is closed, whereby the lip (18) on the door (12) transitions to a lip (16) on the door frame (14).

Abstract: A portable door covering device for placement inside or outside a door leading to the outside of a building, said device being so placed as a permanent or temporary structure during colder months in order to minimize the escape of the heat contained indoors to the outside areas. The device is comprised basically of a semicylindrical member of hollow disposition, said member being open on the one side thereof for placement against the walls near the door area, and the other side being enclosed and equipped with a conventional door to allow access to areas inside the door covering device.

Abstract: A sealing device comprising a door or gasket of rigid material curved in one direction and straight in another, as in the form of a portion of a cylinder, and having convex and concave surfaces. Either or both such surfaces has a circumferentially continuous groove across the straight and curved portions that contains a molded in place packing of resilient material. The packing has a portion projecting from the groove and has a recess extending into the groove. The sides of the recess are either parallel to a transverse axis whose direction corresponds to the direction of travel of the mold members relative to each other when separating so that there are no undercuts in the packing material into which portions of the mold would project and prevent separation of the mold members after the molding operation without damaging the packing.

Abstract: A window lifting arrangement for an automotive vehicle and the like includes a support which defines the axes x, y, z of a system of rectangular coordinates. A window pane is mounted for movement relative to the support, the movement having a principal component in the direction of the y-axis, the pane and its direction of movement being arcuate about an axis of curvature transverse to the y-axis. A guide rail elongated in the direction of the z-axis is secured to the pane. An operating arm is mounted on the support for angular movement about a pivot axis and has a free end drivingly connected to the guide rail for movement of the free end longitudinally of the guide rail. The pivot axis is inclined relative to the plane defined by the y- and x-axes at a small acute angle, and preferably relative to a plane defined by the x- and y-axes at another small acute angle.

Abstract: A motor vehicle door window glass system which includes a door window glass which is formed in the shape of a composite spindle surface wherein the composite spindle surface is formed by smoothly connecting together a plurality of spindle surfaces in a vertical direction so that the radius of curvature along any vertical section of the window glass decreases in a downward direction, a raising and lowering device which raises and lowers the door window glass so that it moves into and out of the space between a door outer panel and a door inner panel and a guide means which guides the door window glass so that the glass successively rotates about a different central axis of the respective spindle surfaces which constitute the composite spindle surface of the door window glass when the raising and lowering device is operated.

Abstract: Nuclear reactor installation in underground construction having a tunnel extending from a location at the surface of the earth to an underground concrete tank includes an auxiliary tunnel extending from a branching location of the first-mentioned tunnel to a location at the surface of the earth different than that from which the first-mentioned tunnel extends, the auxiliary tunnel having a cross section smaller than that of the first-mentioned tunnel and having means disposed therein for blocking the auxiliary tunnel, the blocking means being openable during operation of the nuclear reactor installation, the first-mentioned tunnel being substantially rectilinear and being continuously closed during operation of the nuclear reactor installation between the branching location thereof and the location at the surface of the earth from which the first-mentioned tunnel extends.

Abstract: A fireplace or fireplace insert is provided with semicircular rooms or channels for storage of a guided door and/or fire-screen which are/is movable from a position in front of the fireplace to a storage position in said rooms or channels.

Abstract: A greenhouse structure for growing vegetables, flowers, and like plants inside under good conditions particularly in the fall, winter, and early spring portions of the year includes a building structure having a rear wall and opposite end walls and a roof defining an enclosed space having an open front side and a closure member movable between an open position and a closed position with the closure member being adapted to close the open front side of the building structure. Power means are operatively connected to the closure member for moving same between the open position and the closed position in response to temperature measurement within the building structure for controlling some growing conditions of the plants.

Abstract: An end closure for a rail car which comprises a pair of sliding doors. Locking mechanisms provided for securing the doors in closed position extending across the end of the rail car as well as in open and in intermediate positions. Each door moves from closed to open position through an opening in the side wall of the rail car to an open space on the outer side of the side wall within the allowed rail car clearance.

Abstract: A concrete wall is formed with at least one discharge opening and has an outside surface and an inside surface formed with a recess which surrounds said discharge opening. A door-frame extends in said recess and has corners and a peripherally extending door abutment. A door is disposed in said discharge opening and engages said door abutment. Frame-clamping means are provided to force said door frame into said recess and comprise pins carried by said door frame at least at said corners and extending outwardly through said discharge opening, and clamping plates engaging said outside surface and cooperating with said clamping pins.

Abstract: A bimetallic closure member comprised of two materials having dissimilar magnetostrictive characteristics does not require a hinge, when subjected to a magnetic field, or alternatively, when removed from a magnetic field, the materials contract or expand at different rates causing the member to bend thereby opening or closing the closure member.

Abstract: An entry lock for controlled ingress and egress for confined areas such as live animal growing and holding pens is disclosed. The entry lock includes a door opening, first and second doors spaced apart from each other and adapted to swing together about a common axis positioned at a side of the door opening into alternate register with the door opening, and a third door hingedly attached approximate the outside edge of the first or second door and latched approximate the outside edge of the other of the first or second doors forming a confined area or enclosure large enough to accomodate a human. The enclosure is formed by the third door in conjunction with the first and second doors. The structure prevents ingress and egress through the door opening when the first and second doors are swung together into alternate register with the door opening.