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. 20, 1984
Filed:
Jul. 29, 1980
Gottlieb Wilmers, Neuenstadt, DE;
Abstract
This invention relates to electrically operable valves and in particular, but not exclusively, to valves for use in fuel injection system for internal combustion engines. A valve has a housing 13 having a valve 3 seat, and receiving a valve body 2 which can be raised from the valve seat 3 in accordance with a variation in dimension of magnetostrictional device 7 or a piezoceramic device caused by a current flow in the device. The valve body 2 is spring-loaded, by spring 15, in a sense to close the valve and is connected via the device 7 to a movable abutment unit 10,11, which is so constituted that, during the current induced variations in dimension, it acts as a stationary abutment or anchorage for that end of the device, which is remote from the valve body.