Stop cock for a liquid container
AssigneeKeystone International Holdings Corp.
InventorAlfred van Eck
Life of this patent
Estimating the term…
Abstract
A stop cock for a liquid container, comprising a substantially annular valve housing, a circular valve rotatably mounted in the valve housing, a handle mounted on an operational shaft for rotating the valve between a closed and open position, a seat mounted in the valve housing and cooperating with the valve in the closed position, characterized in that the handle (21) comprises a recess (28) for rotatably receiving a stop bush (29) that comprises a cam (30) which in the closed position cooperates with an indentation (42) of a top plate (24) arranged on a boss (9) and includes a circular passage for shaft (7), said stop bush (29) having an unround passage (33) for mounting a correspondingly formed driving shaft (34) of an unlocking lever (35), the handle (21) and the top plate (24) in a plurality of positions.
Claims18
Stop cock for a liquid container, comprising:
- a housing (1) having a longitudinal centerline;
- a valve (3) rotatably supported about an axis within said housing substantially perpendicular to said longitudinal center line;
- a seat (12) for sealing between said housing and said valve in a closed position;
- a handle (21) mounted outside said housing on an operational shaft (7) for rotating said valve between said closed position and an open position;
- and
- a plate (24) mounted outside said housing in a plane substantially parallel to a plane defined by the movement of said handle between said closed and open positions,
- wherein said valve is eccentrically mounted with respect to the axis about which it rotates and has first and second sides, said first side facing away from said liquid container in the closed position and said second side facing toward said liquid container in said closed position with both sides of said valve disposed on the same side of the axis about which said valve rotates and said second side further showing a cavity toward said liquid container in said closed position.
Stop cock for a liquid container, comprising:
- a housing (1) having a longitudinal centerline;
- a valve (3) rotatably supported within said housing substantially perpendicular to said longitudinal center line;
- a seat (12) for sealing between said housing and said valve in a closed position;
- a handle (21) mounted outside said housing on an operational shaft (7) for rotating said valve between said closed position and an open position;
- and
- a plate (24) mounted outside said housing in a plane substantially parallel to a plane defined by the movement of said handle between said closed and open positions, said plate and handle characterized by
- an indentation (42) on said plate for defining said closed position of said valve;
- a cam (43) on said plate for restricting said open position of said valve;
- a stop bush (29) movably mounted on said handle and including a cam follower (30) receivable in said indentation for locking said valve in said closed position;
- and
- an independently actuated unlocking lever (35) for unlocking said valve by releasing said cam follower from said indentation wherein said handle is movable from said closed to said open position only after said unlocking lever has been independently actuated to release said cam follower from said indentation while said handle is rapidly movable from said open to said closed position without independent actuation of said unlocking lever.
Dependencies are inferred from the claim text.