Patent ID: 6164121
Filing Date: 2000-12-26
Classification: G01M

Abstract:
A system for detecting the presence of and confirming correct orientation of an oil seal, the oil seal having a first surface capable of providing a fluid tight seal over an orifice in a testing surface when the oil seal is oriented correctly and having a second surface incapable of providing said fluid tight seal when the oil seal is oriented incorrectly, the system comprising:a testing surface having a sensor orifice and an exit orifice positioned to be sealed by the first surface when the oil seal is present and oriented correctly;an air supply means for regulating air supplied to the sensor orifice; andan air pressure sensor, whereby when the oil seal is present and correctly oriented with the first surface sealing the sensor orifice a back pressure of air is created at the sensor orifice and the air supply means, the back pressure being detectable by the air pressure sensor to confirm presence and correct orientation of the oil seal and when the oil seal is missing or incorrectly oriented with its second surface covering the sensor orifice no back pressure of air is created or detectable by the air pressure sensor, the air exiting to free space when the oil seal is missing and the air exiting through the exit orifice when the oil seal is incorrectly oriented.