Abstract:
A skylight cover for relatively blocking transmission of light through a lens opening of a skylight structure takes the form of a modular unit (10, 110), configured to fit between standard ceiling joists (16, 17). The unit includes a movable panel (30, 130), panel tracks (33, 133), and a panel drive mechanism (40, 45, 48; 161, 162,164), all housed in a common, readily installable and serviceable framework (12, 112). In one embodiment (10), the drive mechanism is a cable air cylinder (40) having end brackets (48) attached by a slide-in mounting assembly (58) to a frame member 39, and having a U-shaped cable bracket (48) deposited over posts (51) on the panel (30). In another embodiment (110), the drive mechanism is a motor (161) having an output gear (162) meshed with a gear track (164) on the panel (130).
Abstract:
The top hung sash assembly of the invention comprises a hinge bar and a frame assembly hingedly connected to the hinge bar. The frame assembly includes a head extrusion member, a sill member and two side members with at least one glazing member mounted therein. The head extrusion includes a first flange which defines a recess. Secured in the recess is weatherstripping which contacts the hinge bar when the frame assembly is closed against the hinge bar. The weatherstripping is only partially compressed when the frame assembly is closed against the hinge bar. The invention further provides a window construction and a related method for joining a plurality of window assemblies which properly spaces the assemblies relative to the building opening and each other and which allows for subsequent thermal expansion and contraction while remaining sealed.
Abstract:
A slidable pane power window assembly for mounting in the rear window of truck cabs is disclosed. The assembly comprises a frame dimensioned to fit in the rear window opening of a truck cab and fitted with one or more fixed and slidable window panes. A slidable pane is moved horizontally into an opened and closed position by a rack and pinion drive, wherein a rack affixed to the slidable pane is engaged by a pinion powered by a motor connected to the pinion via power transmission cable. Another embodiment uses a push-pull mechanism for operating the window.
Abstract:
An arrangement for converting rotary motion into translational motion in which a motion-transmission device that is movable translationally, is divided into two strings that move longitudinally along their direction of motion. A driving motor provides rotational motion through a rotary drive. The strings are guided transversely and are positioned outside of a guide where they become separated. The strings, on the other hand, become united inside the guide, and this guide prevents the strings from being movable from each other laterally. The strings have teeth on sides facing each other in vicinity of the guide, and these strings have ends secured to an intermediate component in the guide, remote from the rotary drive. The intermediate component is common to both strings, and they become disengaged in vicinity of the intermediate component.
Abstract:
A slide gate damper system comprises (a) a duct frame adapted for mounting in a duct, (b) a gate support frame mounted outside the duct in association with the duct frame; (c) guide rails positioned on the frame members of the gate support frame, (d) a slide gate positioned within the gate support frame, (e) a power source mounted on the slide gate and movable therewith and (f) a drive mechanism operatively connecting the power source to the gate support frame. Mounting of the power source on the slide gate and adapting the drive mechanism accordingly results in a slide gate damper system with reduced overall weight and support structure.
Abstract:
A horizontal sliding door for a housing such as a cabinet. An axle rotatably mounted at the rear of the door projects into two identical tracks one at each side of the housing. Each track has a lower toothed rack and an upper stop surface facing the rack. A pinion slideably and non-rotatably mounted on each end of the axle engages the rack and is held there by an idler wheel slideably and rotatably mounted beside each pinion. A spacer sleeve near one end of the axle is removable, allowing one pinion and idler wheel to be slid inwardly, allowing removal of the door by passing that one end of the axle through a slot in one end of the track.
Abstract:
A sliding door operator comprises a tubular housing adapted to receive first and second elongated bars in a spaced apart and parallel arrangement. Both bars include a gear-toothed rack engaged by a single motor driven gear. An end of one bar is secured to the door and an end of the other bar is secured to a wall structure. A bracket secured to the door includes registering apertures adapted to mate with a bore in the end of one of the bars so that the bar can be detachably locked to the door by a locking pin. The other bar also includes a bore adapted to mate with the aperture in a channel bracket secured to the stationary wall structure to receive a removable locking pin therethrough. In addition, the operator includes a locking mechanism for locking the bars in a fixed position with respect to each other.
Abstract:
An improved electrically operated gate having a rectangular frame with a top horizontal rail, a bottom horizontal rail and vertical ends, a roller adjacent each end extending below the bottom rail by which the gate rolls from open to closed positions, the gate moving in a longitudinal vertical plane, a roller engaging the top rail to maintain the frame in a vertical plane, an inverted horizontal rack affixed to the frame on one side thereof adjacent the frame bottom, the rack having a series of equally spaced teeth, an electric motor drive means affixed at a stationary position adjacent the gate frame and having a pinion drive gear rotatably extending therefrom below the rack and in engagement with the rack teeth, and springs to resiliently urge the pinion gear upwardly into engagement with the rack teeth so that when the electric motor is energized the frame is longitudinally moved to open or close the gate.
Abstract:
A logic control and safety circuit for an electrically actuated gate, or the like. Upon command, a counter directs pulses from a free running oscillator of selective frequency to timer and motor control circuitry, effecting sequential gate operations. The normal gate sequence includes open, pause, and close cycles. Electro-mechanical and electrical safety features are included should the gate encounter an obstruction during either the open or the close cycles, or fail to complete a cycle for any reason. Automatic reset circuitry advances the gate through a "close" cycle following a power failure.
Abstract:
A top hinged swinging sash assembly includes a hinge bar adapted for securement to a building girt, said hinge bar including a substantially J-shaped hinge rail. A frame assembly comprising a head member, a sill member, two or more vertical mullions and two side flashing members is joined to the hinge bar through a curved, beaded head rail extending from the head member. The spaced, vertical mullions connect between the head and sill members with flat or corrugated panels being retained between the mullions and mullion caps mounted thereto. Operators connect to the frame and preferably to the mullions or sills to cause the frame to swing out from the hinge bar. In a preferred embodiment the mullions include a planar forward surface having a hub extending outward therefrom to define oppositely extending channels. These channels accommodate flat panels or in the case of the end mullions accommodate the side flashing members in interlocking relationship. The operator is preferably a rack and pinion with the rack arm thereof terminating in a pivotal connection with the rear portion of the mullion. The frame members are preferably made of extruded aluminum, extruded plastic or formed sheet metal.