Vent plug
AssigneeGrundfos International A/S
InventorsNiels D. Jensen, Biarne Dissing
Life of this patent
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Abstract
A plug, such as a vent plug for mounting in a hole in the wall of a machine element, e.g. the end wall of the rotor casing of a pump comprising a canned motor, comprising an outer cup provided with a support flange and an inner cup pressed into the outer cup and comprising a locking device. The locking device is preferably formed as a locking flange, e.g. in the form of part of a thread serving to interlock the plug and the wall. The distance between the locking device and a sealing face of the support flange or of a sealing element connected to the support flange is smaller than the axial displacement of the plug in connection with the engagement of the locking device with the wall.
Claims9
A plug, such as a vent plug for mounting in a hole in the wall (2, 22) of a machine element, e.g. the end wall of the rotor casing of a pump comprising a canned motor, wherein it comprises an outer cup (3, 23) provided with a support flange (5, 25) and an inner cup (4, 24) pressed into this outer cup (3, 23) and having a locking device (6, 26), preferably formed as a locking flange for interlocking the plug (1, 21) and the wall (2, 22), the distance (a) between the locking device (6, 26) and a sealing face (8, 28) of the support flange (5, 25) or of a sealing element connected to the support flange (5, 25) being smaller than the axial displacement of the plug (1, 21) in connection with the engagement of the locking device with the wall (2, 22).
Dependencies are inferred from the claim text.