| Clark Filter, Inc. Patent applications |
| Patent application number | Title | Published |
| 20110146490 | AIR FILTER WITH EXTENDED LIFE - An extended life filter element is provided that may at least double the service interval of a given filtration application utilizing the same or similar filter housing envelope provided. The filter element may include a more open pleated substrate with an efficiency layer and a prefilter on the upstream surface. The filter may be a foam sleeve. One exemplary application is for air filtration of air flow to electrical cabinets on locomotives. | 06-23-2011 |
| 20100051528 | Seal Improvement for Lube Filter - A filter for applications such as a lube filter for a large medium speed diesel engine application lube system is provided in which the open end cap carries three different seals including two radial seals that seal radially against a stem pipe in an axial abutment face and a seal gasket that seals against a mounting face of the housing. One of the radial seals is more reliable than the other while the other of the radial seals acts as a redundant backup and safety in the event that there is an improper installation or damage to the other seal as a result thereof. | 03-04-2010 |