A pivoting mechanism for an electronic device includes a pivot shaft, a first connecting member disposed on the pivot shaft for being connected with a support of the electronic device, a second connecting member disposed on the pivot shaft for connected with a main body of the electronic device, and a torque adjusting assembly. The torque adjusting assembly includes four sleeves and an elastic member through which the pivot shaft is disposed. Each of the sleeves includes at least one protrusion. The protrusion of one of the four sleeves is slidable relative to the protrusion of another sleeve for adjusting an amount of deformation of the elastic member. A portable electronic device including a main body, a support and the pivoting mechanism is provided.

A portable door securement device is provided having a member extending from a first end engaged to a doorknob of a swinging door or endwall of a sliding door. A second end of the securement device is configured to be engaged with a support surface adjacent the door, to prevent opening of the door in a direction toward the engaged member.

A portable door securement device is provided having a member extending from a first end engaged to a doorknob of a swinging door or endwall of a sliding door. A second end of the securement device is configured to be engaged with a support surface adjacent the door, to prevent opening of the door in a direction toward the engaged member.

A flush glass apparatus includes an operation glass comprising a glass portion and a frame and configured to open and close an opening of a fixed glass by sliding in a lateral direction, and a locking device configured to lock and unlock the operation glass, wherein the locking device comprises an operation handle installed on the frame, an upper locking lever installed on an upper side of the frame, a first lower locking lever installed on a lower side of the frame, a second lower locking lever installed on the lower side of the frame, an upper operation member installed on the upper side of the frame and connected to the operation handle, and a lower operation member installed on the lower side of the frame and connected to the operation handle.

An inverted constant force window balance system includes a carrier assembly and a mounting bracket. The carrier assembly includes a housing, a coil spring disposed within the housing, and a shoe assembly coupled to the housing. The shoe assembly is configured to receive a pivot bar from a window sash and extend at least one brake upon rotation of the pivot bar. The mounting bracket is releasably coupled to the housing opposite the shoe assembly and is coupled to the free end of the coil spring. At least a portion of the mounting bracket is configured to slideably move in relation to the free end of the coil spring between at least two positions. When at least a portion of the mounting bracket moves between the at least two positions, the mounting bracket disengages from the housing and releases the mounting bracket from the carrier assembly.

A flush glass apparatus includes an operation glass comprising a glass portion and a frame and configured to open and close an opening of a fixed glass by sliding in a lateral direction, and a locking device configured to lock and unlock the operation glass, wherein the locking device comprises an operation handle installed on the frame, an upper locking lever installed on an upper side of the frame, a first lower locking lever installed on a lower side of the frame, a second lower locking lever installed on the lower side of the frame, an upper operation member installed on the upper side of the frame and connected to the operation handle, and a lower operation member installed on the lower side of the frame and connected to the operation handle.

A corner key assembly for a sliding panel system including a panel frame and a movable panel can include a corner key including a distal and proximal end, and a guide chamber being defined in the corner key, the guide chamber extending from the distal end towards the proximal end of the corner key; a guide slidingly movable relative to the corner key, at least a portion of the guide being configured to be positioned in the guide chamber and a portion of the guide being configured to extend from the guide chamber; and a biasing element positioned in the guide chamber between the guide and the proximal end, the biasing element configured to urge a portion of the guide from the guide chamber away from the corner key and into frictional engagement with the panel frame to hold the panel in a desired position relative to the panel frame.

Disclosed are apparatus for a snap lock balance shoe and system to be incorporated in pivotable double hung windows. In one embodiment, the snap lock balance shoe includes a pair of retractable tabs that partially extend through openings within an inverted window balance.

An inverted constant force window balance system includes a carrier assembly and a mounting bracket. The carrier assembly includes a housing, a coil spring disposed within the housing, and a shoe assembly coupled to the housing. The shoe assembly is configured to receive a pivot bar from a window sash and extend at least one brake upon rotation of the pivot bar. The mounting bracket is releasably coupled to the housing opposite the shoe assembly and is coupled to the free end of the coil spring. At least a portion of the mounting bracket is configured to slideably move in relation to the free end of the coil spring between at least two positions. When at least a portion of the mounting bracket moves between the at least two positions, the mounting bracket disengages from the housing and releases the mounting bracket from the carrier assembly.

A portable door securement device is provided having a member extending from a first end engaged to a doorknob of a swinging door or endwall of a sliding door. A second end of the securement device is configured to be engaged with a support surface adjacent the door, to prevent opening of the door in a direction toward the engaged member.