Cap for investment molds for precision casting
AssigneeBelle de St. Claire
InventorsJames Chmel, Robert P. Berger
Life of this patent
Estimating the term…
Abstract
A cap for an investment vessel for receiving investment material comprises a platform having a contoured edge and an underside. A wedge is located on the underside of the platform and is frictionally engageable with at least a portion of an inner edge of the top of the vessel. When the cap is placed in frictional engagement with the vessel, the contoured edge provides a restricted opening to the vessel for controlling the flow of the investment material. A lip is provided on the platform at the contoured edge for channeling investment material to the opening.
Claims19
A cap for a vessel which receives an investment material, the vessel having a wall, an open top and an inner edge at the open top, the cap comprising:
- a platform having a contoured edge and having an underside, the cap being removably engageable with the open top of the vessel;
- a portion on the underside of the platform frictionally engageable with at least a portion of the inner edge of the vessel;
- the contoured edge of the platform and the inner edge of the vessel defining an opening for receiving the investment material when the platform is placed over the open top;
- and
- a lip on the platform at the contoured edge for channeling the investment material to the opening.
A combination vessel and cap for receiving an investment material for precision lost wax casting, comprising:
- a vessel having a side wall, an open top and an inner edge at the open top, the vessel having a bottom and a sprue forming structure connected to the bottom and extending to a volume of the vessel;
- a cap for partially closing the open top of the vessel, particularly when the vessel is in a horizontal position for receiving investment material into the vessel, the cap comprising a platform having means for retaining the platform to the open top, the platform having a recess at one edge forming an opening into the open top;
- and
- a lip around the recess for channeling investment material poured onto the lip into the opening.
Dependencies are inferred from the claim text.