Abstract:
A door operated drive assembly comprising an electric drive motor mechanically connected to a door pulling device by a transmission in the form of a belt drive or the like, utilizes an extension of a plate that is swingable in response to deviations of application pressure of the drive belt on belt guide pulleys carried thereby to trigger a switching arrangement utilized to trigger stopping or reversal of the drive motor. In order to make actuation of the switching arrangement a function of the degree of pressure applied by the drive belt, the plate is elastically loaded toward a middle position of its range of swingable movement. The elastic loading of the plate in accordance with a first embodiment is by way of two-arm springs positioned at opposite sides thereof, and in a second embodiment is produced by helical springs which act via actuators, on opposite sides of the plate extension. In both embodiments, the extension reaches to a position adjacent the switching arrangement, but, in the first embodiment, the extension comprises a pair of shields and the switching arrangement comprises a single photoelectric arrangement disposed therebetween, while, in the second embodiment, the extension is a straight projecting arm and the switching arrangement is a pair of switches disposed at opposite sides thereof. In accordance with a feature common to either embodiment, the drive arrangement is mounted in a multiple-component housing that comprises two components which are shiftable relative to each other between an operating position in which the drive motor is mechanically connected to a door pulley means, and a disconnected position in which the mechanical connection is interrupted.
Abstract:
A gate opener (14) is disclosed for attachment to a pre-existing gate (10) mounted for pivotal motion to a post (12). The gate opener includes a controller (30) for activation by an operator from a remote location, such as a vehicle, to transmit a signal of predetermined frequency to a receiver (32) mounted by the gate. The receiver (32) activates a relay to initiate operation of an electric motor (34) to open or close the gate. The rotating motion of the motor shaft is transferred through a set of pulleys (37, 39), a belt (43), gears (48, 54) and a chain (58) to a wheel (38) in contact with the ground. A gate opener (100) forms a second embodiment of the invention. The gate opener (100) is supported by a parallel arm hinge assembly (104) so that substantially the entire weight of the gate opener (100) is supported on the ground (40) through the ground wheel (132) to provide traction to the ground wheel. An open limiter switch (136) and a closed limiter switch (138) cooperate with adjustable contacts (140, 142) to deactivate the motor upon movement of the gate (10) into the opened or closed positions to permit the motor (116) and ground wheel (132) to continue rotation until the gate is either opened or closed.
Abstract:
A sliding door and door guide arrangement for the door opening of a railway passenger compartment including a spring biased door guide mechanism for retarding abrupt movement of the door due to car impacts during rail operations and including a threshold plate having a guide channel cooperative with a guide plate depending from the door slidingly engaged therein to align the door and downwardly biased thereagainst to retard abrupt movements of the door.
Abstract:
Herein described is apparatus useful as roller assemblies for sliding structure such as a door or a window which engage tracks in the door or window frames. The structure comprises a frame insertable within the outer frame of the sliding structure which is generally U-shaped and comprises a roller rotatably mounted within the U-shaped frame. A U-shaped support supports the roller within the frame and includes a pair of extensions which are insertable through slots within the U-shaped frame on either leg thereof. Means disposable through the top of the frame engages the support structure for adjusting the limit of travel of the structure of the support within the U-shaped guide frame slots. A spring is included between this support and the frame to bias the wheel support and the wheel away from the frame.
Abstract:
A device (1) for supporting and moving furniture doors, in particular flap doors, comprises a first fixed part (2) intended to be secured to the body of a piece of furniture (30), a second part (3) intended to be secured to a door (33), articulated connection means (4) movable in a moving plane to connect said first fixed part (2) to said second part (3), elastic means (5) suitable to act through kinematic connection means (7) on a push lever (11) of said articulated connection means (4) to push said device (1) with a predetermined elastic load toward an extended open door configuration after a first portion of the movement of said device (1) from a retracted configuration toward said extended configuration, wherein said elastic means (5) and said kinematic connection means (7) lie in a plane perpendicular to said moving plane for said articulated connection means (4).
Abstract:
An embodiment integrated operating apparatus for different types of gates includes a driving motor, a main shaft rotatable by the driving motor, a first clutch portion at a first side of the main shaft and configured to selectively transmit power to a first gate of a vehicle, the first clutch portion including a first clutch and a first gear selectively engaged with each other, and a second clutch portion at a second side of the main shaft and configured to selectively transmit power to a second gate of the vehicle, the second clutch portion including a second clutch and a second gear selectively engaged with each other, wherein the first and second gates are configured to be independently operated based on the first clutch portion being in an engaged state or a released state and the second clutch portion being in the engaged state or the released state.
Abstract:
An exemplary apparatus includes a modular, self-contained spring cage and a spindle. The spring cage includes a housing and a clock spring mounted in the housing, and the clock spring includes a first leg and a second leg. The spindle extends through the spring cage, and is rotatable from a home position about a longitudinal axis in each of a first rotational direction and a second rotational direction. Rotation of the spindle from the home position in the first rotational direction causes pivoting of the first leg while the second leg remains stationary, thereby causing the clock spring to urge the spindle to return to the home position. Rotation of the spindle from the home position in the second rotational direction causes pivoting of the second leg while the first leg remains stationary, thereby causing the clock spring to urge the spindle to return to the home position.
Abstract:
A turbine stator vane includes a stator vane body extending in a radial direction intersecting the flow direction of steam; a recovery potion that is formed on the surface of the stator vane body, and recovers a liquid film flowing along the surface; and a center region, formed on the surface of the stator vane body and in which a plurality of first fine grooves extending from the upstream side toward the recovery portion in the flow direction are formed. The interval between adjacent first fine grooves narrows from the upstream side toward the recovery portion.
Abstract:
In a method for the commissioning of a door or window closer which comprises an energy accumulator, a damping device with an electric motor being operable as a generator and a transmission element, the leaf is opened and/or closed at least once in a teach-in process, the angular position of the motor shaft is detected during opening and/or closing, a functional relationship is determined between the angular position of the motor shaft and an angular position of the rotatable leaf at least over an area of the opening width of the leaf and the functional connection is automatically taken as a basis for a subsequent actuation of the electric motor for the damping of the closing movement of the leaf.