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. 25, 1993
Filed:
Mar. 16, 1992
Edwin Q Giles, Beaver Dams, NY (US);
Jackson P Trentelman, Painted Post, NY (US);
Jason S Watts, Horseheads, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
A plunger/ring apparatus for press-forming articles of glass, or other formable materials within a mold is disclosed. The disclosed plunger/ring apparatus is provided with a plurality of spring loaded segments which extend outwardly from the plunger to coact with engineered passageways located upon the inner wear surface of the ring to form a seal in the plunger/ring interface area in which air, but not the material to be press-formed, may pass to and from ambient upon press-forming the formable material. An alternative embodiment is also disclosed in which the engineered passageways are located upon the wear surfaces of the segments and with optional additional passages located upon the upper periphery of the plunger.