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:
Jan. 14, 2025
Filed:
Aug. 01, 2019
Thk Co., Ltd., Tokyo, JP;
Katsuya Fukushima, Tokyo, JP;
Masashi Ishii, Tokyo, JP;
Hiroki Niwa, Tokyo, JP;
Akira Suzuki, Tokyo, JP;
Kazuto Oga, Tokyo, JP;
Shogo Wakuta, Tokyo, JP;
Satoshi Hara, Tokyo, JP;
Shigeki Hayashi, Kawasaki, JP;
Tomofumi Mizuno, Tokyo, JP;
THK CO., LTD., Tokyo, JP;
Abstract
The present invention more suitably adjusts a pressure at a tip of a shaft in an actuator configured to generate a negative pressure at the tip of the shaft, to pick up a workpiece with the shaft. A negative pressure-generating structure to be applied to the actuator includes an insertion hole into which the shaft is inserted in a state where a space is formed between the shaft and a wall surface of the insertion hole, an inner space formed inside the negative pressure-generating structure, which communicates with a hollow part of the shaft through a communication hole formed in the shaft, and an air passage connected to the inner space, the air passage being a passage of air when air in the inner space is sucked to generate the negative pressure at the tip of the shaft.