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. 10, 1981
Filed:
Jun. 08, 1979
Applicant:
Inventor:
Mitusuke Masaka, Kawagoe, JP;
Assignee:
Jidosha Kiki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417417 ;
Abstract
In an electromagnetic pump wherein a plunger is reciprocated in a cylinder by an exciting coil energized by interrupted current from an oscillator, an insulating layer is coated on the outer surface of the coil and a space between the coil and a cover is filled with polyurethane foam.