Abstract: An apparatus for lifting a cover from a spa or other housing includes a frame member having one end that is pivotally attached to the exterior of the housing. Another end of the frame member is pivotally and slidably coupled to the cover. In one embodiment, the frame member is pivotally and slidably coupled to the proximate cover portion via a pin attached to the proximate cover portion and extending through a slot defined by the frame member. A motor is likewise attached to the exterior of the housing and is pivotally coupled to the frame member. The motor causes the frame member to rotate thereby lifting the cover off of the housing.

Abstract: A cyclist training system having a polymeric pivoting assembly which is adapted to allow a cyclist of a bicycle to nutate about the perpendicular axis when exerting lateral forces on the bicycle. The cyclist training system includes a tubular base support, a tubular bicycle support; and means to securely retain the bicycle within the cyclist training system. The polymeric pivoting assembly couples the tubular bicycle support to the tubular base support and is constructed from a polyurethane elastomer. Various embodiments of the polymeric pivoting assembly are provided having Shore A hardness in the range of 40-90 durameters and Shore D hardness in the range of 45-65 durameters. The polymeric pivoting assembly minimizes the unnatural bounce provided by other cyclist training systems known in the relevant art.

Abstract: A concentric coaxial cutting machine which cuts cylinders, cylindroids or cones using a chain saw from a single larger object such as a wood tree trunk, a block of ice or a block of plastic.