초록 ▼

An apparatus and system for venting a transmission (10) is disclosed which provides a transmission breather (12) which allows pressure equalization between the interior and exterior of the transmission while reducing or eliminating fluid expulsion from the transmission. The breather includes a stand

An apparatus and system for venting a transmission (10) is disclosed which provides a transmission breather (12) which allows pressure equalization between the interior and exterior of the transmission while reducing or eliminating fluid expulsion from the transmission. The breather includes a standpipe (18), a bowl (20) having a first end (70) secured to the standpipe and at least one aperture (80), a shroud (22) secured to the standpipe, and a filter (90) disposed between the bowl and the standpipe. The standpipe has a first end (30), a second end (32) and an intermediate portion (34) extending axially between the first and second ends. The second end of the standpipe has at least one surface (46) for transmitting torque to the standpipe to enable the breather to be top drivable to facilitate installation and removal of the breather with the transmission. The intermediate portion has an axially extending central passage (60) and at least one radially extending passage (64). The shroud restricts the entry of external contaminants into the transmission through the breather. Air, transmission fluid, mist, and vapor flow through the passages of the standpipe and through the filter which captures the fluid, mist and vapor while allowing filtered air to be vented to the environment through the at least one aperture. The filter facilitates coalescence of the transmission fluid which is returned to the transmission via the passages in the standpipe.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for venting a vehicular transmission containing a lubricating fluid, the apparatus comprising:a standpipe having a first end, a second end and an intermediate portion extending axially between said first and second ends, said first end of said standpipe havin

[ What is claimed is:] [1.] An apparatus for venting a vehicular transmission containing a lubricating fluid, the apparatus comprising:a standpipe having a first end, a second end and an intermediate portion extending axially between said first and second ends, said first end of said standpipe having a threaded region adapted for engagement with the transmission, the threaded region being of a size to resist formation of a film of the lubricating fluid thereacross, said second end of said standpipe having at least one surface for transmitting torque to said standpipe, said intermediate portion having an axially extending passage and at least one radially extending passage;a cylinder adapted to receive a filter, the cylinder having a first end secured to said standpipe and having at least one aperture;a shroud secured to said standpipe; anda filter disposed between said cylinder and said standpipe.