Abstract: An improvement is disclosed for an engine valve system with variable lift and duration of the type that includes two cams mounted coaxially, a summation rocker coupled to cam followers in contact with both cams and movable in proportion to the instantaneous sum of the lifts of the respective cams, and a valve actuating rocker pivotably coupled to the summation rocker and serving to open an engine valve in dependence upon the movement of the summation rocker. In the invention, at least one of the couplings of the summation rocker with the cam followers and with the valve actuating rocker incorporates an adjustable eccentric which is rotatable to enable the clearance within the valve system to be set.

Abstract: An anti-tangling device includes a headphone cord having a distal end, a male signal plug at the distal end, a proximal end, and at least one earphone at the proximal end. Each of the plug and the earphone has first or second parts of a two-part connection device. The two-part connection device removably secures the plug and the earphone to one another. In an embodiment, the plug is the first part and the earphone has a plug-in portion as the second part. The plug-in portion defines a female port shaped to removably secure the plug therein and, when secured, forms a continuous loop with the cord, the plug, and the earphone. The plug-in portion can be integral with or removably attached to the earphone. The first and second parts can be a magnet and a magnetized piece, a hook-and-loop type fastener, or parts of a press-fit snap fastener.

Abstract: A loop antenna includes a ground plane and a conductive element with a first C-shaped element portion having an open end and a closed end, with only the open end extending directly above a first portion of the ground plane, a second C-shaped element portion having an open end and a closed end, with only the open end extending directly above a second portion of the ground plane, and a transmission line element disposed between the first C-shaped element portion and the second C-shaped element portion and positioned directly above a third portion of the ground plane.