Valve

Details Valve Valve

2006-03-28

2008-03-11

Fristoe, Jr., John K. (Department: 3753)

Valves and valve actuation

Valve actuator is valve casing or extension thereof

Sleeve valve

C251S352000, C251S353000

Reexamination Certificate

active

07341240

ABSTRACT:
A drain valve to be used with numerous drain applications, such as draining fluid from an engine, includes in an exemplary embodiment a valve body, a first and second o-ring and a valve sleeve. The drain valve eliminates the need for a tool, such as a wrench, to drain the fluid from the engine, for example. The drain valve includes a twist-and-pull valve sleeve feature to manipulate the valve; however, the valve sleeve remains on the drain valve and therefore cannot be lost or misplaced. The valve sleeve further includes an easy grip for opening and closing the valve. The drain valve may include a notch formed on the valve body to serve as a break-away point to permit the valve to break under certain conditions.

REFERENCES:
patent: 5092363 (1992-03-01), Vanderjagt
patent: 5096158 (1992-03-01), Burdick et al.
patent: 5213137 (1993-05-01), Pettesch
patent: 5332194 (1994-07-01), Austin et al.
patent: 5411115 (1995-05-01), Shropshire
patent: 5782455 (1998-07-01), Burnworth
patent: 6032705 (2000-03-01), Murphy et al.
patent: D473935 (2003-04-01), Braun
patent: 6565095 (2003-05-01), Meacham
patent: 6622988 (2003-09-01), Gill
patent: 6886808 (2005-05-01), Sarno
patent: 7114703 (2006-10-01), Ciesielka

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