The invention relates to a pull-out guide for a movable furniture part, including at least one rail horizontal in the installed position, and a drive element for a drive device for the movable furniture part, and the drive element can be fastened on the rail, in particular detachably fastened. The driver element can be brought from a release position in a fixing position with the rail by a fastening movement of the drive element, the fastening movement being carried out in the horizontal plane.

Apparatus and process for securing a grating over an atmospheric opening of a ventilation shaft fluidly communicating through the ventilation shaft to an underground ventilation duct. A vertically extending support for arrangement in the shaft has horizontal flanges for projecting across a top of at least two opposing sides of said shaft to hang said support in said shaft for over topping by said grating. An anchoring member is supported in the support at a level below the flanges and proximate the atmospheric opening. A hold-down connects to the anchoring member to secure the hold-down and the grating to the anchoring member.

A gate is pivotally mounted on an upstanding post located adjacent a juncture of intersecting travel paths. To prevent collisions of persons and/or vehicles moving along the intersecting travel paths at the travel path juncture, a kinetic energy harvesting switch is carried by the upstanding post and has a spring-projected push button or plunger-type operator that is depressed relative to a housing of the switch when the gate begins to open to admit a person and/or a vehicle to the travel path juncture. Energy harvested by the switch is utilized to transmit a radio frequency signal that can be received by a device that displays a visual warning and/or emits an audible warning, advising that collision avoidance measures are likely to be needed to prevent a collision at the travel path juncture.

A gate is pivotally mounted on an upstanding post located adjacent a juncture of intersecting travel paths. To prevent collisions of persons and/or vehicles moving along the intersecting travel paths at the travel path juncture, a kinetic energy harvesting switch is carried by the upstanding post and has a spring-projected push button or plunger-type operator that is depressed relative to a housing of the switch when the gate begins to open to admit a person and/or a vehicle to the travel path juncture. Energy harvested by the switch is utilized to transmit a radio frequency signal that can be received by a device that displays a visual warning and/or emits an audible warning, advising that collision avoidance measures are likely to be needed to prevent a collision at the travel path juncture.

The invention relates to a pull-out guide for a movable furniture part, including at least one rail horizontal in the installed position, and a drive element for a drive device for the movable furniture part, and the drive element can be fastened on the rail, in particular detachably fastened. The driver element can be brought from a release position in a fixing position with the rail by a fastening movement of the drive element, the fastening movement being carried out in the horizontal plane.

The invention relates to a pull-out guide for a movable furniture part, including at least one rail horizontal in the installed position, and a drive element for a drive device for the movable furniture part, and the drive element can be fastened on the rail, in particular detachably fastened. The driver element can be brought from a release position in a fixing position with the rail by a fastening movement of the drive element, the fastening movement being carried out in the horizontal plane.

A gravity powered garage door control opening and closing system that eliminates the conventional electric garage door opener and eliminates its two most common risks of failure, the first being a gear and/or bearing failure and the second being an electrical power failure. Other advantages include a reduction in electrical power needed and a reduction in cost over every other type of garage door opener. The present invention operates by transferring fluid between a counter weight and a storage tank under programmed control to control the movement and speed of the garage door as a function of its position in the door guides in which the door moves in.

A gravity powered garage door control opening and closing system that eliminates the conventional electric garage door opener and eliminates its two most common risks of failure, the first being a gear and/or bearing failure and the second being an electrical power failure. Other advantages include a reduction in electrical power needed and a reduction in cost over every other type of garage door opener. The present invention operates by transferring fluid between a counter weight and a storage tank under programmed control to control the movement and speed of the garage door as a function of its position in the door guides in which the door moves in.

The invention relates to a pull-out guide for a movable furniture part, including at least one rail horizontal in the installed position, and a drive element for a drive device for the movable furniture part, and the drive element can be fastened on the rail, in particular detachably fastened. The driver element can be brought from a release position in a fixing position with the rail by a fastening movement of the drive element, the fastening movement being carried out in the horizontal plane.

The invention relates to a pull-out guide for a movable furniture part, including at least one rail horizontal in the installed position, and a drive element for a drive device for the movable furniture part, and the drive element can be fastened on the rail, in particular detachably fastened. The driver element can be brought from a release position in a fixing position with the rail by a fastening movement of the drive element, the fastening movement being carried out in the horizontal plane.