A temperature activated door spring device includes a spring having a coil with a contiguous upper arm and lower arm. The coil includes an inner hinge pin hole and has a circumferential edge sized to mount on the top of a hinge knuckle. A collar is affixed within the inner hinge pin hole wherein the inner hinge pin hole is encompassed by the collar sized to accept an inserted hinge pin. A pellet hole is located proximate an extended end of the upper arm, wherein the pellet hole is sized to accept a fusible pellet. An upper portion of the pellet hole traverses through the upper arm and a lower portion of the pellet hole traverses through the lower arm so that when a fusible pellet is inserted into the pellet hole it holds the upper arm and the lower arm together in a spring loaded position.

A roller including: a main body portion configured to include an outer ring and a rotatable inner ring on an inner circumferential side of the outer ring; and a covering portion disposed on an outer circumferential surface of the outer ring, the covering portion being made of a synthetic resin in which reinforced fibers are dispersed, wherein the covering portion includes a region in which arrangement directions of the reinforced fibers are aligned.

A piezoelectric energy harvester system for collecting kinetic energy is provided, wherein the kinetic energy is converted into electrical energy, and wherein at least a portion of the converted electrical energy is utilized to operate a load. The system comprises an energy input portion and an energy harvesting portion. The energy input portion includes an input member configured to be actionable by an outside force. The energy harvesting portion includes a capture member, a sprocket portion, and a piezoelectric energy harvester. The capture member is adapted for receiving mechanical input from the input member. The sprocket portion is disposed for movement with the capture member. The sprocket portion includes at least one radially disposed sprocket actuator configured for making contact with and exciting the piezoelectric energy harvester. The piezoelectric energy harvester is excited by the contact to produce the kinetic energy.

A secure container includes a housing and a hinged door, the housing including an inner shell, an external shell, and a plurality of fastening brackets. The external shell surrounds the inner shell. The fastening brackets are inserted and fixed between the receiving space defined between the inner shell and the external shell. Each fastening bracket defines a plurality of first through holes through which a filler can be introduced, the fastening brackets lending strength and a particular placement to the filler.

A hood back portion moving mechanism is supported with a hinge on a side of a vehicle body such that a back end portion of a hood provided at a front portion of a vehicle body is able to be opened and closed, and the hood is lifted up by an actuator. A back end portion of a pop-up link is rotatably coupled to an upper hinge included in the hinge, the hood is rotatably coupled to a front end portion of the pop-up link, and the actuator is bridged over the upper hinge and the hood.

A door opening and closing device for a vehicle includes: a supporting member interposed between a vehicle body and a door, and supporting the door to be openable and closable. The supporting member includes first and second housings whose one end sides are linked to the vehicle body or the door via a linking unit, a spindle, a spindle nut, a coil spring biasing the first and second housings in a direction in which the first and second housings are separated from each other, a motor disposed in the first housing and rotating and driving the spindle, a case accommodating the motor therein, and a spline engaging unit engaging the first housing with the case or a metal member joined to the case not to be relatively movable in the rotational direction using a spline.

A vehicle door includes a fixed bracket having a base plate part fixed by a bolt to an attachment surface of a vehicle body, and a pair of bent pieces bent at a right angle in relation to the base plate part and set apart from each other in the axial direction of a hinge shaft. In the bent pieces are formed: a shaft hole in which the hinge shaft is inserted; and a raised stopper part projecting from the inner-side surface of the bent piece, the raised stopper part coming into contact with a stopped part of a movable bracket, whereby the movable bracket is stopped in the fully open position.

The invention relates to a container and a lower and an upper construction element each including a first surface, and a second surface. The surfaces are arranged at a distance from one another, forming a space wherein at least one non-concrete composite bar and a metal component is arranged. Concrete is arranged in the space between the first surface, the second surface, and the composite bars.

A backplate for a door actuator includes at least one first mounting element and a second mounting element, wherein one of the two mounting elements is formed for fastening to a mounting surface, in particular door, casing or wall, and the other mounting element is formed for receiving the door actuator. The backplate also includes, at least one connecting assembly, which in a retaining position, keeps the two mounting elements together and, in a release position, does not keep the two mounting elements together, and at least one shape memory assembly with a shape memory element made from shape memory material, wherein, upon thermal activation, the shape memory assembly moves the connecting assembly to the release position.

A device has at least two components that can be moved relative to each other. A drive device is provided with a drive housing and a drive shaft in order to bring about a relative movement of a first component to a second component. If the drive shaft is coupled in a rotationally fixed manner to the second component, the drive housing is rotatably accommodated on one of the two components and can be coupled by an actuator in a rotationally fixed manner to the first component and can be decoupled therefrom. If the drive housing is coupled in a rotationally fixed manner to the second component, the drive shaft can be coupled by an actuator in a rotationally fixed manner to the first component and can be decoupled therefrom.