A method and apparatus is provided for regulating stable operation of an exhaust-gas turbocharger of an internal combustion engine having a fresh-gas supply device, a switchover valve, a control device, a compressor for generating compressed air and an air-processing unit with a discharge valve. The reinforcing member includes a first wall attached to one side of the front support leg and the one side of the rear support leg; second wall attached to the other side of the front support leg and the other side of the rear support leg, the second wall facing the first wall; and a first connecting portion connecting lower ends of the first and second walls with each other. A biasing member is disposed to bias the grip member to the non-working position. It further has a neck opening which is open towards the flow path and which is implemented in the form of a neck slot. Upstream of the top end cap a heat exchanger andor a filter can be used to cool andor remove debris from the lubricant before lubricating the internal components. Some articles include a grip strip to facilitate multigripping\u2014not only does the article releasably fasten to itself, it also restricts movement of a load or other work piece.