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:
Feb. 07, 2023
Filed:
Sep. 24, 2020
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Takashi Hiraiwa, Fujimi-machi, JP;
Makoto Omura, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29B 7/40 (2006.01); B29B 7/48 (2006.01); B29B 7/52 (2006.01); B29C 35/02 (2006.01); B29B 7/42 (2006.01);
U.S. Cl.
CPC ...
B29B 7/408 (2013.01); B29B 7/428 (2013.01); B29B 7/48 (2013.01); B29B 7/488 (2013.01); B29B 7/52 (2013.01); B29C 35/02 (2013.01); B29C 2035/0283 (2013.01);
Abstract
A hopper charged with a powder material, a screw arranged below the hopper and exposed at a supply port formed at the bottom of the hopper, and a rolling element in contact with the screw at the supply port are provided. The rolling element is larger than a space between end portions of the supply port and a screw groove of the screw.