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. 02, 1982
Filed:
Feb. 07, 1980
Roland Englund, Stockholm, SE;
Tommy Wincent, Upplands Vasby, SE;
Svenska Kassaprinter AB, Sundbyberg, SE;
Abstract
In a matrix printing head (1) including at least one printing needle (9), an electromagnet (2), which is provided with an armature (4) co-operating with the printing needle for moving the latter towards a printing position, and a spring (6) for returning the needle in a direction from the printing position, the printing needle is pivotably and detachably connected to the armature (4) by means of said spring (6). The pivotable connection is accomplished by the printing needle (9) being provided with a curved end (9b) pivotably supported in a groove (4c) in the armature (4). The curved end of the needle is retained in this groove by means of said spring (6). The armature (4) is pivotably supported in a notch (5b) in a yoke (5) carrying a plurality of electromagnets (2) and is detachably supported in the notch by means of said spring (6).