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:
Mar. 24, 2026
Filed:
Jun. 01, 2022
Hitachi Astemo, Ltd., Hitachinaka, JP;
Kan Kobayashi, Hitachinaka, JP;
Takao Nakadate, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
A piston () of a compressor () partitions the inside of a cylinder () into a compression chamber () and a suction chamber (). A communication passage (A) is formed in the piston (). The communication passage (A) establishes communication between the compression chamber () and the suction chamber (). The suction valve () opens and closes an opening (A) of the communication passage (A). The suction valve () has a plate-like shape. The suction valve () includes a fixation portion (A) fixed to the piston (), a closing portion (B) configured to cover the opening (A), and a spring portion (C) connecting the fixation portion (A) and the closing portion (B). A spring portion facing portion (B) in the piston (), which faces the spring portion (C) of the suction valve (), is recessed more deeply than a closing portion facing portion (C), which faces the closing portion (B) of the suction valve ().