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:
May. 21, 1996
Filed:
Jun. 05, 1995
Robert B Wagstaff, Veradale, WA (US);
David A Salee, Spokane, WA (US);
Wagstaff, Inc., Spokane, WA (US);
Abstract
The apparatus includes a first chamber disposed about the mold cavity and defined by a top, a bottom, and walls extending between the top and bottom at the inner and outer peripheries of the first chamber. A liquid coolant is supplied under pressure to the first chamber through an inlet. A step is formed adjacent one of the corners between the top and bottom .and the inner peripheral wall of the first chamber, a circumferential groove is formed in the outer peripheral wall of the step, and an elastomeric sealing ring is sealingly engaged with the mouth of the groove to define a second chamber in the groove. Meanwhile, the shoulder of the step is spaced apart from the other corner of the first chamber, and a series of holes is formed in the shoulder to permit the coolant to pass into the second chamber at a reduced pressure. A passage then discharges the reduced pressure coolant onto a body of metal emerging from the discharge end opening of the cavity.