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. 15, 2001
Filed:
Jun. 04, 1999
Frederick F. Van Keuren, III, Cincinnati, OH (US);
Milacron Inc., Cincinnati, OH (US);
Abstract
A locking apparatus secures a movable platen in position relative to strain rods on which the movable platen is slidably carried. The locking apparatus includes split nuts that are carried by the movable platen and are pivotable about respective pivot axes between a first position in which the split nuts engage the strain rods and a second position in which the split nuts are pivoted away from the strain rods. The strain rods include grooved sections and the split nuts carry internal grooved portions that are complementary with the grooved portions of the strain rods so that the split nuts are engageable with the grooved portions of the strain rods to retain the movable platen in a desired position during a molding operation. Respective pairs of split nuts are actuated simultaneously by a piston and cylinder arrangement that causes movement of a primary pair of links to move the halves of one split nut and a pair of secondary links that extend from the one split nut to the other split nut so that the split nut halves are each operated by the same cylinder. The lengths of the primary and secondary links are adjustable to enable the first and second split nuts to be moved simultaneously through the same degree of arc.