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US 6,578,386 B2Granted
Plunger mechanism for I.S. machine
AssigneeEmhart Glass S.A.
InventorsWilli Meyer, Vladimir Vajda
Life of this patent
Estimating the term…
Abstract
A plunger mechanism which has a one piece housing into which is inserted the upper sealing member. The upper sealing member is secured to the interior wall of the housing at its desired location.
Claims3
A plunger mechanism for use in an I.S. glassware forming machine comprising,
- a one piece housing comprising a lower portion having a vertical cylindrical bore and an upper portion adapted to receive a plunger guiding and positioning mechanism,
- a piston head mounted on a piston rod, said piston head being arranged to move axially in sealing engagement with said cylindrical bore and a free end of said piston rod being adapted to support a plunger,
- a lower sealing member for sealing the lower end of said cylindrical bore,
- rod guide means extending from said lower sealing member for guiding said rod as it is displaced vertically,
- an upper sealing member for sealing the upper end of said cylindrical bore and having an aperture through which said piston rod can pass, said upper sealing member selectively configured so that it can be inserted into the one piece housing from the open top and displaced downwardly to a selected location where the lower and upper portions of the housing meet,
- and fastening means securing said upper sealing member to said one piece housing at the selected location.
3 more elements
Dependencies are inferred from the claim text.