Inventors:
Ted Wakamiya - San Ramon CA
Gerry Peffer - San Jose CA
Vincent L. Marinaro - Sunnyvale CA
Assignee:
Advanced Micro Devices, Inc. - Sunnyvale CA
International Classification:
G01F 2330
US Classification:
73311, 73309, 733225, 73323, 250577
Abstract:
An apparatus for indicating a fluid level in a reservoir includes a conduit for communication with a reservoir and including a sight glass. A buoyant primary float is provided within the conduit, and a stop is provided within the conduit for engaging the primary float to prevent travel of the primary float beyond an upper portion of the conduit. A buoyant secondary float in the conduit is moveable together with the primary float when the primary float is not engaged by the stop, and is moveable separately from the primary float when the primary float is engaged by the stop and a fluid level in the conduit exceeds the level of the stop such that a portion of the secondary float may travel separately within the upper portion of the conduit. The secondary float preferable includes an elongate portion that passes through an aperture in the primary float, and a buoyant upper portion that is located above the primary float and is larger than the aperture in the primary float. The secondary float also preferably includes a lower portion that is located below the primary float and is larger than the aperture in the primary float.
