Abstract: The described tire deflation device is used when it is necessary to deflate a tire rapidly, especially when the tire is not to be fully deflated. A tool within the device is able to engage the tire valve in order to unscrew it from the valve stem. The tire valve stem is engaged, by a housing wall within which the tool slides. The tool is manipulated at a free proximal end of the housing wall and is able to rotate and slide longitudinally within the housing wall. The tool includes a seal which prevents tire air from reaching an aperture in the housing wall when the tool is at one end of the housing wall, and uncovers the aperture when positioned at the other. In one embodiment, a collar, engagable with a pressure gauge, slides on the outside of the housing wall and is able to be positioned so that the aperture and pressure gauge are interconnected, and alternately positioned to vent the tire.

Abstract: The invention provides a simple method for reducing the amount of force required to actuate a motorcycle clutch. A miniature, lightweight housing means provides a pivot for a lever means to which is attached a short cable from the clutch actuation handle and also the original cable from the clutch. Because the two cable attachment points on the lever means are staggered, the lever means provides mechanical advantage and thereby reduces the manual force required to move the clutch actuation handle.The invention is designed to allow fast installation by providing cable slots in all parts and using cable sleeve tension to permit simple hook-on attachment of cable terminal hardware to the lever means. The housing means cover is used to exclude the environment and also to assure mechanical strength. The pivot pin and attachment hardware for anchoring the cables is locked into place by the covers.