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:
Jun. 22, 1976
Filed:
Mar. 11, 1974
Applicant:
Inventor:
Ross W Johnston, Norristown, PA (US);
Assignee:
Sperry Rand Corporation, Blue Bell, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
101 9348 ; 101 9329 ; 101 9302 ;
Abstract
A plurality of small pin-shaped low-mass print hammers are slideably mounted in a row opposite moving type. The low-mass print hammers are individually moved a short distance from a ready position to impact the moving type by individual highspeed actuators when a selected character is juxtaposed each of the hammers. The print hammers and actuators are returned to the ready position by spring means cooperating with damper means.