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. 09, 1982
Filed:
Nov. 06, 1979
Hiroshi Ueda, Nara, JP;
Shigeru Oyokota, Sakai, JP;
Minolta Camera Kabushiki Kaisha, Azuchi, JP;
Abstract
An electromagnetically driven device has a bobbin made of non-magnetic material and has an opening formed in its axial direction. A coil is wound on the bobbin for establishing a magnetic field inside and around the bobbin when electric current is supplied to the coil. A plunger made of magnetic material is inserted into the opening for movement in its axial direction. A magnet is attached to one end of the plunger for increasing the driving force of the plunger when electric current is supplied to the coil.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile