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. 16, 2021
Filed:
Jun. 01, 2020
General Plastic Industrial Co., Ltd., Taichung, TW;
Shao-Yuan Tsai, Taichung, TW;
GENERAL PLASTIC INDUSTRIAL CO., LTD., Taichung, TW;
Abstract
An error proof device for restricting assembling of a specific toner cartridge into an electronic image-forming apparatus only after the toner cartridge is rotated about a rotation axis includes a guiding portion at the apparatus and a retaining portion at the toner cartridge. The guiding portion has an axial groove and a positioning groove having a circular arc section. The retaining portion has an axial post located at the rotation axis and inserted into the axial groove, and a lateral post spaced from the axial post and inserted into the positioning groove. When the toner cartridge is rotated about the rotation axis, the lateral post moves along the circular arc section of the positioning groove. With the error proof device, a user can positively install a toner cartridge into an accuracy position, thereby avoiding material waste and undesired cleaning procedure due to error installation.