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. 10, 1998
Filed:
Aug. 27, 1996
Masao Hamada, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A pneumatic fastener driving tool having a cover member which covers an exhaust port of a body portion. The body portion has a top wall, and a cover member is engagingly fixed to an upper portion of the body portion. The cover member and the upper portion of the body portion define an exhaust air passage, and the cover member has an exhaust opening in communication with the exhaust passage. The cover member is formed of an elastic material and has a top wall where a through hole is formed. Normally, a lower surface of the cover member is in surface contact with an upper surface of the top wall of the body portion. If the cover member is thermally deformed, the lower surface of the cover member is separated from the upper surface of the top wall of the body portion, and exhaust air may be leaked into the space. The leaked exhaust air is discharged outside through the through hole.