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:
Nov. 04, 2025
Filed:
Mar. 02, 2022
Nitta Corporation, Osaka, JP;
Itaru Hatano, Yamatokoriyama, JP;
Atsushi Matsumoto, Yamatokoriyama, JP;
Shunsuke Iwata, Yamatokoriyama, JP;
NITTA CORPORATION, Osaka, JP;
Abstract
A gripping device includes a partition film that is elastically deformable, a vacuum pump (deformation unit) that elastically deforms the partition film, and a cylindrical gripping portion that extends from the peripheral edge of the partition film and is elastically deformed in the central axis direction along with the elastic deformation of the partition film to wrap a workpiece. When the gripping portion comes into contact with the workpiece, a sealed space is formed between the workpiece, the gripping portion, and the partition film. Since the volume of the sealed space increases due to the elastic deformation of the partition film, a negative pressure is generated in the sealed space. The gripping device reliably grips the workpiece by a frictional force acting between the workpiece and the gripping portion and a suction force due to a negative pressure generated in the sealed space.