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:
Jul. 22, 2014
Filed:
Oct. 09, 2009
Tomoyoshi Yokota, Hitachinaka, JP;
Seiichi Kodato, Hitachinaka, JP;
Kenichi Matsunaga, Hitachinaka, JP;
Tomoyoshi Yokota, Hitachinaka, JP;
Seiichi Kodato, Hitachinaka, JP;
Kenichi Matsunaga, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
When an air pressure in a tank part () drops from a maximum set pressure value (A) to or below at least one restart set pressure value defined to lie in a range between the maximum set pressure value and a minimum set pressure value, a control circuit part () operates an electric motor () at a predetermined revolving speed. When the air pressure in the tank part () drops from the restart set pressure value to or below the minimum set pressure value, the control circuit part () operates the electric motor () at the predetermined revolving speed or a revolving speed lower than Nuntil the air pressure in the tank part () reaches the maximum set pressure value.