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:
Sep. 28, 1999
Filed:
Jun. 27, 1996
Eiji Funatsu, Fujieda, JP;
Sumitomo Bakelite Company Limited, Tokyo, JP;
Abstract
A screw for an in-line screw type thermosetting resin injection molding machine comprises a resin kneading portion in a front end portion of a full-flighted screw. In the resin kneading portion, a groove having a crest portion and a trough portion formed spirally in a circumferential direction, and a step portion. A difference between a radial dimension of the step portion and an outermost radial dimension of the crest portion is 10% to 60% of a difference between the outermost radial dimension of the crest portion and an innermost radial dimension of the trough portion. The axial length of the resin kneading portion is 0.5 to 2 times as long as the outer diameter of the full-flighted screw, or 0.5 to 2 times as long as the pitch of the full-flighted screw.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile