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ABSORBENT PLUGS AND CAPS FOR ABSORPTION OF RESIDUAL TRANSMISSION FLUID IN CASTING AND COMPONENT CAVITIES

IP.com Disclosure Number: IPCOM000230975D
Publication Date: 2013-Sep-20
Document File: 2 page(s) / 215K

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The IP.com Prior Art Database

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ABSORBENT PLUGS AND CAPS FOR ABSORPTION OF RESIDUAL TRANSMISSION FLUID IN CASTING AND COMPONENT CAVITIES

Automatic Transmission Assemblies are tested with hot oil after they are assembled to verify correct assembly and functionality with End-Of-Line Test equipment. The test process requires the transmission to be filled with transmission fluid prior to initiation of the test sequence. After completion of the test sequence the transmissions are cleaned, packaged, and shipped to customers. Ports or cavities in the transmission that allow transmission fluid to flow into or out of the transmission have residual transmission fluid in them after the final hot oil test sequence. The input and output ports or cavities have shipping caps or plugs inserted in them prior to the cleaning and shipping process to retain all residual fluid and prevent contamination during the final wash process and transit to customers. Transmissions arrive at customer locations, typically vehicle assembly plants where the shipping caps and plugs are removed. Residual transmission fluid from end-of-line testing or fluid drainage during shipping will leak from the transmission ports or cavities when the cap or plug is removed. The leaking fluid typically drips on the facility floor creating a slippery environment and compromises safety for workers who remove the caps at vehicle assembly plants. The current fluid containment solution is to insert grease plugs into ports/cavities, such as the transmission case in/out cooler ports to retain the residual fluid and prevent leakage of fluid when the shipping caps/plugs are removed at customer locations. The grease application has been used in transmission facilities for several years, but has not always been successful in eliminating the problem of dripping fluid from the transmission.

A method is proposed to use a shipping cap/plug with absorbent material attached to the end of the cap/plug or inserted into the cap/plug. The cap/plug with the absorbent material attached would then be inserted in the transmission cavity or subcomponent assembly that has residual transmission fluid present and the potential to leak fluid from the cavity. The residual fluid will be absorbed by the absorbent material attached to the shipping cap/plug. Hence when the cap/plug is removed from the transmission or component a...