Abstract: Wind energy systems and devices comprise a nacelle, a rotor driven alternator housed in the nacelle, a rotor connected to the alternator, and a load control system in communication with the alternator. The rotor includes a rotor hub and three or more rotor blades, and each blade has a foil shape and is connected to the rotor hub by a full foil attachment mechanism. The alternator is configured to operate at low rpm and to increase rotation speed without a step-up mechanism. The load control system is configured to anticipate changes in wind speed and adjust alternator load such that when wind speed increases the load control system adjusts the alternator load to optimize rotor rpm and optimize tip-speed ratio.

Abstract: Wind energy systems and devices include a nacelle, a rotor driven alternator housed in the nacelle, a rotor connected to the alternator, and a load control system in communication with the alternator. The rotor includes a rotor hub and three or more rotor blades, and each blade has a foil shape and is connected to the rotor hub by a full foil attachment mechanism. The alternator is configured to operate at low rpm and to increase rotation speed without a step-up mechanism. The load control system is configured to anticipate changes in wind speed and adjust alternator load such that when wind speed increases the load control system adjusts the alternator load to optimize rotor rpm and optimize tip-speed ratio.

Abstract: Wind energy systems and devices comprise a nacelle, a rotor driven alternator housed in the nacelle, a rotor connected to the alternator, and a load control system in communication with the alternator. The rotor includes a rotor hub and three or more rotor blades, and each blade has a foil shape and is connected to the rotor hub by a full foil attachment mechanism. The alternator is configured to operate at low rpm and to increase rotation speed without a step-up mechanism. The load control system is configured to anticipate changes in wind speed and adjust alternator load such that when wind speed increases the load control system adjusts the alternator load to optimize rotor rpm and optimize tip-speed ratio.

Abstract: A device for stabilizing slopes having a first plate and a second plate attached to the first plate at a non-perpendicular angle. The second plate is configured to inhibit rotation of the first plate. At least one gusset is disposed on a first side of the second plate and attaches the first plate to the second plate. At least one strut is disposed on a second side of the second plate and attaches the first plate to the second plate. A guide tube is non-pivotally attached to the first plate such that at least one of a rod and an extension of the anchor are rotatable within the guide tube. The guide tube is a hollow cylinder that is completely closed except at the ends thereof.

Abstract: A retention device is presently disclosed for attaching and maintaining the positioning of a transcutaneous drainage tube in a patient without the use of suturing. The retention device is structurally configured to accommodate a drainage tube. Further, the retention device has a small tube and at least one pair of inflatable discs. The tube is positioned such that one of the discs in the pair of discs is located interior the epidermis while the other disc in the pair of discs is located exterior the epidermis. As the tube and discs are inflated, the pair of discs act as a grommet for securing the retention device to the epidermis. The tube is filled with a sterile, medically bio-inert saline solution at a point exterior the epidermis. Further, the retention device also has a flexible disc for holding a sterile dressing proximate the insertion position for the drainage tube. The retention device is positionally maintained without the need of suturing or other invasive connecting devices.

Abstract: When a gasket of thermoplastic material is moulded in a polypropylene cap, the adhesion of the gasket to the cap at temperatures below 200.degree. C. is improved by including an adhesion-promoting polymer of propylene in the thermoplastic composition.

Abstract: A multi-purpose bookmark adapted to be positioned over the top edge of the book back with an inner leg thereof extending between the pages thereof and a outer leg thereof extending downwardly along the book back outer surface and in contact therewith. Resiliently between the aforementioned legs and a spirally wound section on the outer leg provides the friction to ensure the engagement of the bookmark to the book and page position may be marked by one or more lines extending through an opening in the connecting portion between the two legs. In addition, a pencil or pen holder is provided at the outer leg.

Abstract: When a gasket of thermoplastic material is moulded in a polypropylene cap, the adhesion of the gasket to the cap at temperatures below 200.degree. C. is improved by including an adhesion-promoting polymer of propylene in the thermoplastic composition.

Abstract: A sealing gasket for the inner surface of a container closure is formed, generally by melt application, of a composition which comprises a blend of 55 to 99% ethylene vinyl acetate copolymer having a vinyl acetate content of less than 25% and a melt index above 300 and polyethylene having a melt index above 200.

Abstract: This invention provides a solar energy collector including a Fresnel lens substantially fixed in orientation and position relative to the Earth, a receiver situated at a focal point of the said Fresnel lens, a mounting mechanism which constrains the receiver to move along the focal surface of the Fresnel lens, and orientation means for continually orientating the receiver so that the said receiver remains in a region of high intensity of radiation during periods of direct sunlight.The solar energy collector according to the invention is particularly suitable for inclusion in building structures.