US4146337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric typewriter for multiple languages
Assignee: Individual
•
Filing: 1977-07-01
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Granted: 1979-03-27
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Expires: 1997-07-01
Abstract
Abstract An electric typewriter for printing indicia includes indicia-selecting and typerwriting mechanisms. Keys are associated with the indicia through a mechanical matrix which controls the positioning of a ball containing the indicia.
Inventors
- 👤 Alan Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:52
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
277 words
An electric typewriter for printing indicia comprising: a ball having a plurality of indicia formed at different locations on the surface thereof; ball mounting means for moving said indicia on said ball in three degrees of freedom to a position presenting one of said indicia for printing; means for urging movement of said ball to a reference position; a plurality of manually operable keys each associated with at least one of said indicia for causing that indicia to be printed when the key is operated; means for mounting said keys in an array of columns and rows; a plurality of first levers each extending below one of the columns, said first levers moving vertically when one of the keys of that column is operated to engage that first lever, said first lever having first and second projections indicating the column; a plurality of x, y & z pendulum levers mounted below said keys, one said z lever engaging with any one of said keys in one of said rows when said any one of said keys is manually operated, a unique pair of one of each said x and y levers being engaged by said projections for movement with each of said first levers when any one of said first levers moves vertically; means for engaging a first lever to cause horizontal movement of said first lever and the coupled x, y & z pendulum levers levers when a key and said first lever are depressed; and means for moving said ball to a position presenting the indicia on the operated key in response to said horizontal movement of said coupled x, y & z pendulum levers.
Claim 2
Dependent Claim
277 words
An electric typewriter for printing indicia comprising: a ball having a plurality of indicia formed at different locations on the surface thereof; ball mounting means for moving said indicia on said ball in three degrees of freedom to a position presenting one of said indicia for printing; means for urging movement of said ball to a reference position; a plurality of manually operable keys each associated with at least one of said indicia for causing that indicia to be printed when the key is operated; means for mounting said keys in an array of columns and rows; a plurality of first levers each extending below one of the columns, said first levers moving vertically when one of the keys of that column is operated to engage that first lever, said first lever having first and second projections indicating the column; a plurality of x, y & z pendulum levers mounted below said keys, one said z lever engaging with any one of said keys in one of said rows when said any one of said keys is manually operated, a unique pair of one of each said x and y levers being engaged by said projections for movement with each of said first levers when any one of said first levers moves vertically; means for engaging a first lever to cause horizontal movement of said first lever and the coupled x, y & z pendulum levers levers when a key and said first lever are depressed; and means for moving said ball to a position presenting the indicia on the operated key in response to said horizontal movement of said coupled x, y & z pendulum levers.
Claim 3
Dependent Claim
108 words
An electric typewriter according to claim 1 wherein said means for moving the ball comprises: a plurality of x, y & z cams associated with said plurality of x, y & z pendulum levers; an eccentric shaft through said cams; means for connecting said cams to said eccentric shaft when said associated x, y & z pendulum levers are moved horizontally; p1 means for driving said eccentric shaft; three pulling means, one each riding on x cams, y cams and z cams; steel wires linking said pulling means and said ball; and means for controlling the position of said ball relative to the position of said steel wires.
Claim 4
Dependent Claim
67 words
An electric typewriter according to claim 1 further comprising: a platen; a typewriting gear; means for driving said typewriter gear; a typewriting cam connected to said typewriting gear for movement therewith; a ball bracket mounting said ball and riding said cam for movement by said cam; and said platen being struck with said indicia of the operated key upon movement of said ball bracket by said cam.
Claim 5
Dependent Claim
149 words
An electric typewriter according to claim 2 wherein said ball comprises: a rotation yoke controlled by one of said steel wires connected to said pulling means riding on x cams, for rotating said ball upward and downward; a plurality of shafts extending vertically along the surface of said ball; a plurality of type pans located on said shafts for rotation thereabout each said type pan having a plurality of faces with the indicia to be typed so that rotation of a pan presents said indicia; a plurality of small gears each located at the top of one of said shafts for rotating that shaft; a bevel gear means connected to said bevel gear, controlled by a steel wire connected to said pulling means riding on said y cams; and means for rotating said ball controlled by a steel wire connected to said pulling means riding on said z cams.
Claim 6
Dependent Claim
82 words
An electric typewriter for printing indicia according to claim 4 wherein the means for urging movement of said ball to a reference position comprises: a spring on said bevel gear supplying a force contrary to said steel wire connected to said y cams; a spring on said ball supplying a force contrary to said steel wire connected to said z cams; and a spring connected to said rotation yoke, supplying a force contrary to said steel wire connected to said x cams.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |