Abstract: Methods, devices and attachments for game-playing (sports) that involves manipulating objects in X, Y and Z planes (3-D space) using remote controlled aerial craft such as a drone that has hovering capability. Particularly characterized by the use of at least one human player controlled craft plus a passive aerial playing object like a game ball that players can only indirectly control by physically manipulating it with the player craft.

Abstract: Methods, devices and attachments for game-playing (sports) that involves manipulating objects in X, Y and Z planes (3-D space) using remote controlled aerial craft such as a drone that has hovering capability. Particularly characterized by the use of at least one human player controlled craft plus a passive aerial playing object like a game ball that players can only indirectly control by physically manipulating it with the player craft.

Abstract: A performance enhancing attachment and method of performance enhancement for sports equipment that includes a high performance plastic layer and an adhesive on one surface of the plastic layer for attaching it to the equipment. Preferably the adhesive is an aggressive, high-tack resilient adhesive; and plastic is a long chain, high density polymeric UHMW plastic. When applied to a board member surface the plastic enhances slipperiness and resists board breakage and delamination. Using a plastic and adhesive that are substantially transparent enables viewing of graphics that are protectively covered by the attachment. Making the plastic layer relatively thin and flexible enables its use in a wide range of creative equipment enhancements by an end user. A particularly advantageous use is for protecting and enhancing slipperiness of the bottom of a skateboard deck or a wheel truck.

Abstract: A fluid-powered mechanical actuator having a proximal end and a distal end and having a plurality of hollow tubular elements hingedly connected in end-to-end linked relationship to form a variable angle therebetween, each such link having one degree of freedom; provision to bias the elements in a direction to minimize the angle between them; a flexible elongated chamber enclosing a space within it, the chamber situated within the linked elements and within the link therebetween, substantially contained thereby, the chamber having a flexible but non-expansible wall; and apparatus to provide to the space within said chamber a pressurized working fluid; whereby the pressure of the working fluid causes said chamber to straighten within said elements, especially at said links, thereby moving the relative position of the elements in a manner to act against the biasing means, thereby to cause an increase of the angle between them by providing an increase in working fluid pressure.

Abstract: A fluid-powered mechanical actuator having a proximal end and a distal end and having a plurality of hollow tubular elements hingedly connected in end-to-end linked relationship to form a variable angle therebetween, each such link having one degree of freedom; provision to bias the elements in a direction to minimize the angle between them; a flexible elongated chamber enclosing a space within it, the chamber situated within the linked elements and within the link therebetween, substantially contained thereby, the chamber having a flexible but non-expansible wall; and apparatus to provide to the space within said chamber a pressurized working fluid; whereby the pressure of the working fluid causes said chamber to straighten within said elements, especially at said links, thereby moving the relative position of the elements in a manner to act against the biasing means, thereby to cause an increase of the angle between them by providing an increase in working fluid pressure.