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:
Aug. 12, 1986
Filed:
Nov. 08, 1985
Pietro Musso, Ivrea, IT;
Ing. C. Olivetti & C., S.p.A., Ivrea, IT;
Abstract
The electronic typewriter is of the `daisywheel` type and comprises a microprocessor, a stepping selector motor controlled by a position register for positioning the daisywheel 28, and a support frame for a correction ribbon. The support frame is arranged to oscillate from a down position for viewing purposes to an up position for the correction operation. A tab (104) moves up and down with the frame. The daisywheel rotates together with a sleeve member 97 provided with a stop seat 98. The tab (104), in the up position, urges a tooth (99) on a lever (101) into interference with the sleeve member (97), via a resiliently yielding blade (107) of the lever (101). During the correction cycles, rotary movement of the daisywheel (28) takes place when the support frame and hence the tab (104) is in its own position and thus without any obstacle. In the initialization phase, the microprocessor raises the support frame and tab (104) in advance of a command for complete rotation of the daisywheel (28). This causes the tooth (99) to engage into the seat (98) and stops the daisywheel in its zero position. The position register is then loaded with a code corresponding to the zero position of the daisywheel, thereby being synchronized to the angular position thereof.