A door closer assembly includes a door closer without a powered drive for closing a door. The door closer includes an energy accumulator, wherein the energy accumulator is chargeable by manually opening the door and wherein the energy accumulator discharges for closing the door. A sensor unit is also included for detecting an angle information with regard to the opening angle of the door.

In a high-security sliding-door apparatus for closing and opening a corridor, the door having (a) a door frame having a track and a bi-directional effector, (b) a carriage having track-engaging rollers, (c) a slide plate slidably secured to the carriage and driven by the effector, and (d) a controller controlling slide-plate movement and enabling the door to be continuously closed but not locked, the improvement comprising centering apparatus for relative positioning of the slide plate and carriage, the centering apparatus including (1) a yoke attached to the slide plate at a yoke pivot and having a yoke cam surface thereabove, (2) a carriage-attached yoke-cam follower, and (3) springs having proximal ends attached to the yoke spaced above the yoke pivot and distal ends each attached to the carriage at points offset from the yoke pivot in opposite lateral directions, centering the door with the slide plate when unlocked.

A door tensioning system for an oven or other appliance includes a chain and spring assembled as a pull member attached at one end to a door and at an opposite end to a base member of the appliance in a manner maintaining spring-mediated tension between the door and the base/bulk of the appliance. The pull member is routed around a bracket-assembly-mounted pulley, where the bracket assembly includes at least one movable bracket member that is movable with the pulley in a manner that will increase or decrease tension in the pull member by increasing/decreasing its effective length between its ends.

A device. The device includes a shaft having a longitudinal axis, a first end, and a second end. The device also includes a connector attached to the first end of the shaft. The device also includes a rod connected to the shaft. The rod comprises a third end and a fourth end. The third end is connected to the second end of the shaft. The rod is about parallel to the longitudinal axis. The device also includes a spring surrounding the rod. The spring is compressible or extendable along the longitudinal axis. The device also includes a stop connected to the rod at a position distal to the spring. The stop resists longitudinal compression or extension of the spring.

A system for detecting broken springs in overhead doors having automatic door openers includes an automatic door opener having a motor, a sensor configured to monitor performance of the motor in the door opener, and a processor in communication with the sensor. The processor is configured to compare the motor performance with a predetermined threshold level and send an alert when motor performance exceeds the predetermined threshold level.

Provided is a retracting device comprising a main arm and a sub-arm wherein appearance can be improved. An arm (5) has a main arm (7) and a sub-arm (8) such that an acceptance portion (25) for accepting a receiving part (reception part) (6) is formed between these. The main arm (7) and the sub-arm (8) are configured so that the main arm (7) and the sub-arm (8) rotate by way of: the acceptance portion (25) being closed in a hold position; the acceptance portion (25) opening by the receiving part (reception part) (6) coming into contact with the main arm (7) in the hold position; and an end portion (21) of the main arm (7) and an end portion (24) of the sub-arm (8) coming into contact while the acceptance portion (25) is opened.

A friction bearing for rotatably connecting a first component to a second component, including a spacer arranged to be non-rotatably connected to the first component, a first friction cone non-rotatably connected to the spacer, a housing arranged to engage the first friction cone and be non-rotatably connected to the second component, and a disc spring arranged to provide an axial force on the friction bearing.

A spindle drive for an adjustable element of a motor vehicle is provided with a drive unit having a drive unit housing formed in a materially uniform manner, the spindle drive having two drive portions which run in opposition to one another, the spindle-side drive portion having a torsion tube formed in a materially uniform manner with an engagement portion, and the spindle nut being in rotationally fixed but axially displaceable engagement with the engagement portion to form a torque support. The torsion tube has a fastening portion which is fastened to the drive unit housing in a rotationally fixed and axially fixed manner.

A friction based counterbalance mechanism for coupling with a closure panel of a vehicle to assist in opening and closing of the closure panel, the counterbalance mechanism including: a first housing having a first pivot connection mount for connecting to one of a body of the vehicle and the closure panel; an extension member coupled to the first housing at one end and being extendable and retractable with respect to a second housing coupled adjacent to the first housing along an axis, the second housing for connecting by a second pivot connection mount to the other of the body and the closure panel; a sliding friction mechanism having: a shaped sleeve mounted on an exterior surface of the extension member, the shaped sleeve providing an exterior friction surface; and a resilient friction element mounted to the second housing in a fixed location on the axis, the resilient friction element positioned between second housing and the shaped sleeve and biased into contact with the exterior friction surface; wherein relative movement between the shaped sleeve and the resilient friction element as the extension member is displaced generates sliding friction between the resilient friction element and the shaped sleeve.

The invention relates to an ejection device for ejecting a movable furniture part from a closed position into an open position along an opening path, comprising a support and a coupling device for coupling the ejection device to the movable furniture part. The coupling device has a coupling piece which can be moved relative to the support and a coupling counter piece which is arranged on the movable furniture part or on a furniture body. The coupling device has a coupling position and a decoupling position, and the ejection device can be coupled to the movable furniture part via the coupling device in the coupling position. The ejection device also comprises a controller, by means of which the coupling device can be switched depending on the opening path, and the coupling device reaches the decoupling position from the coupling position in the event of a specified opening path.