Abstract: A door assistant includes a generally wedge-shaped portion and a handle. The wedge-shaped portion includes a surface defined between a first lower end and a second higher end. The handle includes a generally vertically extending portion and a grasping portion. The handle operates between a first orientation in which the grasping portion is aligned with the wedge shaped portion, and a second orientation in which the grasping portion is aligned with a surface of a door when the door assistant is in use. The handle places the wedge-shaped portion in a desired position relative to a lower edge of a door by a user. The door assistant further includes a foot pad extending rearwardly from the wedge-shaped portion, and has a surface sloping downward from the second higher end to the first lower end.

Abstract: A door assistant apparatus for retaining an opened door in a desired position, comprising a wedge-shaped portion, a foot pad portion and a vertically extending handle portion. The handle portion includes a grasping portion rotatably mounted to a vertical element of the handle portion. The grasping portion is operable between a first position substantially aligned with the wedge-shaped portion and the foot pad portion, and a second position wherein the grasping portion is substantially aligned with a surface of a door to which the door assistant has been applied.

Abstract: A door assistant apparatus for retaining an opened door in a desired position, comprising a wedge-shaped portion, a foot pad portion and a vertically extending handle portion. The handle portion includes a grasping portion rotatably mounted to a vertical element of the handle portion. The grasping portion is operable between a first position substantially aligned with the wedge-shaped portion and the foot pad portion, and a second position wherein the grasping portion is substantially aligned with a surface of a door to which the door assistant has been applied.

Abstract: The invention provides a fan (10) with a blade (12), suitable for use as a ceiling fan. Blade (12) may be regarded as a single blade, although shaft (18) is not attached to blade (12) at one end thereof; rather, shaft (18) is attached to blade (12) at a point between first end (14) and second end (16). Blade (12) is balanced by counterweight means (22) located in blade (12). In on embodiment, blade (12) is connected to shaft (18) by means which permit angular movement, such as a teeter hinge.

Abstract: The invention provides a fastener assembly suitable for joining a first element such as a circuit board to a second element such as a casing or another circuit board. The fastener assembly includes a first component which has a pin and a second component which includes a cavity for receiving at least part of the pin. In one aspect, at least part of the second component capable of being received within a bore in the first element. Either the first component or the second component is made of material which can change from a first shape to a second shape at a particular temperature. The pin of the first component is adapted to be locked into the cavity of the second component when the second shape is attained, through interaction of the material with the cavity, without deformation of the pin.

Abstract: Quick release bolt assembly included shank and head of larger cross-section than that of shank. The screw thread of shank is adapted to rotatably engage with a complementary screw thread in a nut. Disengagement means are adapted in use to disengage the head or the nut without rotation of the nut or shank. The disengagement means includes a material such as shape memory alloy or epoxy resin, adapted to change form to facilitate engagement when activated. Activation may take place by a direct power supply or remotely by a radio frequency, magnetic, ultrasonic or infra red signal. Bolt can be used for anchoring seat belts. Computer systems and methods for the identification of a target, including enquiring as to the status of the target and having means to command the target to change the status are also disclosed and claimed.