Abstract: Provided is a filter material for an automatic transmission oil filter that has excellent filtration performance and that can trap even dust having a small particle size. The filter material comprises an entangled nonwoven fabric in which fine fibers generated from dividable composite fibers are entangled with each other.

Abstract: A filter element includes a filter member provided with a plurality of pleat portions and a frame body holding an outer peripheral portion of the filter member. The frame body is provided with a comb-shaped portion having a comb-tooth portion which is inserted into adjacent pleat portions and contacts to a surface of the filter member, and the comb-shaped member is formed by an insert-molding process.

Abstract: A filter element includes a filter member provided with a plurality of pleat portions and a frame body holding an outer peripheral portion of the filter member. The frame body is provided with a comb-shaped portion having a comb-tooth portion which is inserted into adjacent pleat portions and contacts to a surface of the filter member, and the comb-shaped member is formed by an insert-molding process.

Abstract: An oil pan includes a bottom portion, a side wall portion standing upward form an edge portion of the bottom portion, a cylindrical lubricating oil amount adjusting wall structure standing upward from substantially the central portion of the bottom portion and formed, to an inner peripheral portion thereof, with a lubricating oil amount adjusting passage which communicates with an external portion, the lubricating oil amount adjusting wall having a lubricating oil drain port formed to a lower portion thereof, a cylindrical lubricating oil adjusting plug assembled detachably to the lubricating oil amount adjusting passage so that the lubricating oil adjusting plug closes the lubricating oil drain port, the lubricating oil amount adjusting plug being formed with a communication port communicating with the lubricating oil amount adjusting passage, and a drain plug fitted detachably to the communication port.

Abstract: An oil pan includes a bottom portion, a side wall portion standing upward form an edge portion of the bottom portion, a cylindrical lubricating oil amount adjusting wall structure standing upward from substantially the central portion of the bottom portion and formed, to an inner peripheral portion thereof, with a lubricating oil amount adjusting passage which communicates with an external portion, the lubricating oil amount adjusting wall having a lubricating oil drain port formed to a lower portion thereof, a cylindrical lubricating oil adjusting plug assembled detachably to the lubricating oil amount adjusting passage so that the lubricating oil adjusting plug closes the lubricating oil drain port, the lubricating oil amount adjusting plug being formed with a communication port communicating with the lubricating oil amount adjusting passage, and a drain plug fitted detachably to the communication port.

Abstract: There is provided a filter element which maintains the flow rate of a fluid passing through a filter medium, restrains a pressure loss as far as possible, and is compact in size. In the filter element including a filter medium 30 pleated so that peaks 30a and valleys 30b are arranged alternately and a frame 21 for holding the filter medium 30, the frame 21 includes a frame body 22 forming the peripheral edge portion thereof and a plurality of ribs 23 extending in parallel on the inside of the frame body 22. The interval H between the ribs 23 is set at 5 to 35 mm, and the filter medium 30 is folded at an angle ? of at least four degrees at the peaks 30a and the valleys 30b.