Abstract: A construction (1) defining a volume submerged in an air-stream (10), with at least one surface (6) against which the air current impinges, directing, acceleration and laminating an air-flow against the lateral (6) of the construction (6) having at least one wind-mill generator (2) attached to said lateral (6) in an area where there is still no separation of said laminar air-flow (11) form the construction (1). Faced with said generator (2), is arranged at least one plate (9), the wind generator (2) being positioned between said plate (9) and said portion of the lateral wall, determining a tunnel (14) with an air inlet and outlet of the air-stream impinging on the blades of the wind-mill generator (2). The inlet of the air-stream into said tunnel (14) directed towards the blades of the wind-mill generator is placed adjacent the largest section of the perimeter of said construction (1), perpendicular to the direction of incidence of the wind-stream.

Abstract: The aircraft defines a lifting volume including at least part of the central body housing the transported payload. Said volume has a conventional aerodynamic profile along the longitudinal direction of the aircraft, with portions of wings projecting symmetrically and transversely at both sides thereof. From the longitudinal axis said wings at each side shows corresponding first sections with negative dihedral and forward swept until reaching corresponding inflexion points from which two distal second sections or tracts projects with positive dihedral and back swept until reaching the wingtips of the projected wingspan.

Abstract: An animal excrement collection device comprising a collection bag with a front panel defining a first opening, a sheath formed in the front panel and located proximate to the perimeter of the first opening, first and second lock pins removeably attached to the excrement collection bag, a filament located within the sheath and comprising a first end connected to the first lock pin and a second end connected to the second lock pin, a first string with a first end removeably connected to the first lock pin and a second end in communication with the front panel, a second string with a first end removeably connected to the second lock pin and a second end in communication with the front panel, wherein a user closes the opening and disengages the from the animal by pulling on the first and second lock pins.

Abstract: An animal excrement collection device comprising a collection bag with a front panel defining a first opening, a sheath formed in the front panel and located proximate to the perimeter of the first opening, first and second lock pins removeably attached to the excrement collection bag, a filament located within the sheath and comprising a first end connected to the first lock pin and a second end connected to the second lock pin, a first string with a first end removeably connected to the first lock pin and a second end in communication with the front panel, a second string with a first end removeably connected to the second lock pin and a second end in communication with the front panel, wherein a user closes the opening and disengages the from the animal by pulling on the first and second lock pins.

Abstract: A device for collecting waste of a dog wearing a harness has a polymeric bag having an open end and formed thereabout with a channel and a drawstring extending through the channel and having ends projecting from the bag so that tension on the drawstring closes the open end. An annular and heart-shaped stiffening band extending around the open end is formed inward of the channel with a pair of upper and a pair of lower inwardly directed formations. Respective elastic cords each have a rear end attached to the band and a front end attachable at least indirectly with the harness to hold the bag under a tail of the animal. Each of the cords is releasably attached to the respective inwardly directed formation such that when the open end is closed by tension on the drawstring the cords are released from the formations.