Abstract: A movable flow controller is interposed in a fluid flow path. The flow controller includes an elongate groove having a first end and a second end. The groove preferably is sized and shaped so that a cross-sectional area of the groove changes along its length from the first end to the second end, and terminates in a hole through the flow controller. In operation, a portion of the groove is aligned with an inlet of the flow path on a first side of the controller, and the hole is in communication with an outlet of the flow path on a second side of the controller. Moving the flow controller relative to the flow path input varies the minimum cross-sectional area of the flow path through the controller and thus selectively limits fluid flow through the controller.

Abstract: A movable flow controller is interposed in a fluid flow path. The flow controller includes an elongate groove having a first end and a second end. The groove preferably is sized and shaped so that a cross-sectional area of the groove changes along its length from the first end to the second end, and terminates in a hole through the flow controller. In operation, a portion of the groove is aligned with an inlet of the flow path on a first side of the controller, and the hole is in communication with an outlet of the flow path on a second side of the controller. Moving the flow controller relative to the flow path input varies the minimum cross-sectional area of the flow path through the controller and thus selectively limits fluid flow through the controller.

Abstract: The grips in a set of golf clubs (both woods and irons) are made progressively greater in diameter in going from the number one iron to the sand wedge and the driver through the fairway woods, the grip diameter for each club being designed for maximum control and accuracy for that club.