Abstract:
A door driving unit includes a driving mechanism rotatable in a reciprocating manner within a predetermined operational angle range, a body portion fixed to a vehicle body, a first member driven by the driving mechanism, and a second member driven by the first member by being in contact with the first member. The first member and the second member are supported by a common shaft. The door driving unit further includes an engaging mechanism for engaging the first member and the second member with each other so that the first member and the second member rotate as a unit with each other within a first predetermined angle range when the first member drives to rotate the second member.
Abstract:
A screw drive mechanism connectable to at least one of a first machine portion and a second machine portion for moving the second machine portion relative to the first machine portion from a first position to a second position. The mechanism has a base for attachment to one of the first and the second machine portions and a motor attached to the base. It includes a drive screw having a rotary motion connection to the motor to be rotated thereby and a drive nut having an internally threaded bore engaged with the drive screw to receive a drive force from the drive screw. A drive nut connection is engaged with the drive nut for conveying the drive force to one of the first and the second machine portions. An anti-rotation member is attached to the drive nut connection, the anti-rotation member engaging the drive nut to prevent rotation thereof. The mechanism also includes an activation member attached to the base, the activation member contacting a disengaging surface portion of the anti-rotation member when such one of the first and the second machine portions is moved to the second position to place the anti-rotation member in a position disengaged from the drive nut so that the drive nut may rotate. A drive nut rotating device is attached to the base, the drive nut rotating device rotating the drive nut to a locking position when such one of the first and the second machine portions is moved to the second position.
Abstract:
An automatic chute closure for covering a chute opening wherein the chute closure includes a frame disposed around a chute opening, a chute door pivotally connected to the frame for movement between an opened and closed position, a door movement mechanism for opening and closing the chute door, a switch mechanism for activating and deactivating the door movement mechanism and a latch mechanism for securing the chute door in a closed position until the switch mechanism is activated to open the chute door. The automatic chute closure allows an operator to conveniently activate a single switch to open and close the chute door and to insure once the chute door is closed it is properly locked.
Abstract:
A method is disclosed for selective alteration and control of door movement modes utilizing an apparatus that is primarily non-hydraulic and incorporated with a known mechanism which is functional independently from the apparatus in one mode of operation and which includes a piston for controlling door closing characteristics by selected fluid flow within the mechanism. The apparatus includes a motor driven lead screw having a linearly movable shuttle unit mounted thereon, the shuttle unit being positioned relative to the piston of the mechanism to accommodate nonattached contact with the piston to urge the piston, when the shuttle unit is moved, in a direction that will at least provide selective assistance with door opening in another mode of operation. Operation of the apparatus is controlled by programming of a related controller including non-volatile memory.
Abstract:
A security mechanism for securing a movable closure supported within a frame, the closure being movable from a secured position to a plurality of unsecured positions, preferably having a securing element having at least one opening, a base element, a slider element movably mounted on the base element and a latch element comprising at least one locking latch pivotally attached to the base element. The locking latch preferably has a first cam surface for engaging a cam post located on the slider element and a second cam surface for engaging the opening of the securing element. When the closure is moved to its secured position, the second cam surface of the locking latch engages the opening of the securing element thereby causing the locking latch to pivot and lock to the opening of the securing element. When the closure is moved to an unsecured position, the slider element is moved along the base element away from the securing element, causing the first cam post of the slider element to engage the first cam surface of the locking latch, causing the locking latch to pivot and disengage the opening of the securing element, thereby unsecuring the closure. The security mechanism may be used in conjunction with an automatic garage door opener for automatically securing and unsecuring a garage door that is opened and closed by the automatic garage door opener.
Abstract:
An improved automatic garage door opener system is described, the delay linkage in the motorized door opening mechanism which enables actuation of latch closures for improved security and also provides improved shock cushioning in the system.
Abstract:
This invention provides mechanism for opening and closing a door such as a garage door but applicable to other doors, including a trolley which moves back and forth on a track and controls the door movement. The invention provides novel means operable between the trolley and the track for latching and unlatching the trolley with respect to the track in a manner to effect safe, accurate and trouble-free operation of the door movements. The invention also provides a simplified and improved track and trolley construction whereby to make for greater economy in the cost of manufacturing mechanism of this type.
Abstract:
A hinge device includes a first connection means (3) assigned to be fixed to a structure or frame and rotatably connected to a second connection means (5) assigned to be fixed to a door device (1) comprises at least one interconnecting means (7) connected to a sliding means (13) and a friction means (17) with at least one friction sliding block (25) secured to the sliding means (13) and sliding along a respective sliding wall (27) of the first connection means (3) and parallel to a direction of translation of the sliding means (13), wherein at least one arrest means (19) is fixed or made in the first connection means (3) in proximity to a sliding wall (27) to abut with the sliding means (13) to arrest its stroke towards the closing of the door or of the shutter in correspondence to the breather opening condition (S).
Abstract:
A device for opening and closing an outwardly opening pivoting wing, comprising: an actuating device including a support, a crank rotatable relative to the support and a control mechanism operated by the crank, and an arm having a toothed portion which cooperates with said control mechanism, wherein the control mechanism cooperates with the toothed portion of the arm for the translational motion of the arm along a rectilinear direction between a locked wing position and an unlocked wing position, and vice versa, a first and a second slider intended to engage a groove of the wing in a movable manner in a rectilinear direction, wherein the first slider is articulated at a distal end of the arm and wherein the second slider is connected to a locking device.