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. 12, 1988
Filed:
Feb. 10, 1986
Applicant:
Inventor:
Shiro Takahashi, Tokyo, JP;
Assignee:
Man Design Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417417 ; 417 62 ; 417257 ; 417419 ;
Abstract
Electromagnetic reciprocating pump including a plurality of pumps combined in such a manner that the mode of connection between the suction inlet and the discharge outlet in each of the pumps is allowed to be changed and, as the result, the amount of suction or discharge or the degree of vacuum or compression is allowed to be selected at a multiplicity of stages without any loss of the energy of the alternating current power. The plurality of pumps are disposed in such a manner that the axes of their respective pistons intersect one another at one point and the pumps themselves are rotationally symmetrical with respect to the point mentioned above.