초록 ▼

A filter assembly includes a slidable tubular member which in a first position provides for flow communication from an inlet passage through a filter element to a filter chamber outlet. Upon removal of the filter housing and filter element the tubular member is biased to a second position to effect

A filter assembly includes a slidable tubular member which in a first position provides for flow communication from an inlet passage through a filter element to a filter chamber outlet. Upon removal of the filter housing and filter element the tubular member is biased to a second position to effect a flow shut off between the inlet passage and the tubular member. The filter assembly may further include an outlet passage in flow communication with the inlet passage, and a valve seat is axially aligned with the tubular member and disposed between the inlet passage and outlet passage. A valve member on the end of the tubular member is engageable with the valve seat to preclude flow between the inlet passage and outlet passage when the tubular member is in the first position and providing for flow communication between the inlet passage and the filter chamber outlet.

대표청구항 ▼

In a filter assembly having a flow passage with an inlet and a first outlet, a removable housing on said assembly and defining a filter chamber having a second outlet, a filter element disposed in the chamber, said assembly having a bore extending between the flow passage and filter chamber, a tubul

In a filter assembly having a flow passage with an inlet and a first outlet, a removable housing on said assembly and defining a filter chamber having a second outlet, a filter element disposed in the chamber, said assembly having a bore extending between the flow passage and filter chamber, a tubular member slidably disposed in the bore and projecting into the flow passage and filter chamber, respectively, closure means on the end of the tubular member disposed in the flow passage, a valve seat is said flow passage, said closure means being engageable with the valve seat in a first position of the tubular member to preclude flow communication between the inlet and first outlet, said tubular member having orifice means adjacent to said closure means to place the inlet in flow communication with the second outlet through said tubular member and filter element when the tubular member is in said first position, said filter element engaging with the tubular member to maintain said member in said first position when the filter housing is in place on the assembly, and spring means to bias the tubular member from said first position to a second position upon removal of the filter housing and filter element from the assembly, said biasing movement of the tubular member to the second position effecting a separation of the closure means from the valve seat to place the inlet in flow communication with the first outlet while simultaneously effecting closure of the orifice means within the tubular member bore to shut off the flow communication to the disassembled filter housing.