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:
Jun. 01, 2021
Filed:
Mar. 11, 2019
Hongfujin Precision Electronics (Zhengzhou) Co., Ltd., Zhengzhou, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Eddy Liu, New Taipei, TW;
Xi-Hang Li, Zhengzhou, CN;
Jun-Kang Fang, Zhengzhou, CN;
Po-Lin Su, New Taipei, TW;
Wei Wu, Zhengzhou, CN;
Xue-Wei Wang, Zhengzhou, CN;
Yi-Lung Chen, New Taipei, TW;
Guo-Yi Cui, Zhengzhou, CN;
HONGFUJIN PRECISION ELECTRONICS (ZHENGZHOU) CO., LTD., Zhengzhou, CN;
HON HAI PRECISION INDUSTRY CO., LTD., New Taipei, TW;
Abstract
A flatness sensing device includes a pressure sensing unit and a controller. The pressure sensing unit includes a plate portion, and a pressure sensor fixed and exposed at an edge of the plate portion. A sensing surface of the pressure sensor is flush with the bottom surface of the plate portion. The pressure sensor senses a pressure or lack of pressure of an object to be tested when it touches the object to be tested. The controller receives the pressure value output from the pressure sensor and determines a flatness of the object to be tested, the controller can issue an alarm on finding non-flatness and cause the degree of flatness to be displayed to a user.