The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2002
Filed:
Aug. 08, 2001
Masaki Usui, Kyoto, JP;
Denken Co., Ltd., Kyoto, JP;
Abstract
The present invention proposes an apparatus for casting dental prosthesis designed to save labor and costly malformations. In a form of the invention, a first arm mechanism for conveying a ring and a second arm mechanism for conveying a crucible are provided to slide along the same guide . A ring-placing platform C and a burning unit G are placed across the guide , and so are a crucible-placing platform D and a casting unit H. When the arm mechanism places a ring on a lifting stage , the lifting stage moves upward to contain the ring in a furnace , where the ring is heated to bum off the wax inside. Meanwhile, the arm mechanism places the crucible in a container , where alloy ingots are melted. After completing the melting of the alloy ingots and the burning of the ring, the arm mechanism conveys the ring onto the top of the crucible in the container . Then, a cover closes the container to constitute a chamber, which is then turned upside-down to carry out the pressure casting. After completing the casting, the ring and the crucible are returned to the platforms C, D by the arm mechanisms , respectively.