US3866735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational positioning mechanism for single element printer
Assignee: TA Triumph-Adler GmbH
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Filing: 1973-10-18
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Granted: 1975-02-18
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Expires: 1993-10-18
Abstract
Abstract A plurality of type characters are formed on the periphery of a typehead of a single element printer, and the typehead is rotatably driven to position selected type characters for printing by a belt drive extending into a cavity in the typehead. The typehead is removably secured to a gear rotatably supported on a tilt frame, and the tilt frame is pivotally mounted on a shaft which is rotatably supported in a portion of a supporting frame received in the cavity of the typehead. The shaft carries a beveled gear engaged with the gear associated with the typehead, and the typehead is rotatably driven by an endless toothed belt leading into the cavity of the typehead and trained about a toothed pulley carried on the shaft. The supporting frame is rotatably mounted on a bushing which is slidably carried on a drive shaft, and the toothed belt is trained about a toothed pulley on the bushing so as to enable the typehead to be rotatably driven upon rotational movement of the drive shaft.
Inventors
- 👤 Herbert Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:15
CPC Classifications
B; B41; B41J; B41J1/00; B41J1/60
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
241 words
In a printing machine having a hollow downwardly open cupshaped typehead on which a plurality of type characters are located in columns and rows on its outer periphery, said typehead being adapted to be rotatably positioned about a rotate axis to select a column of type characters and to be tiltably positioned about a tilt axis to select a row of type characters, comprising, support means extending into the hollow interior of said typehead for supporting said typehead for movement about an external axis to effect printing of a type character at a selected row and column location, a first shaft defining said external axis, a second shaft parallel to said first shaft rotatably supported on the portion of said support means within said typehead, said second shaft defining said tilt axis, a tilt frame pivotally supported on said second shaft, a first gear rotatably supported on said tilt frame and having its axis along said rotate axis, means securing said typehead to said first gear, a second gear secured to said second shaft meshing with said first gear, a first pulley rotatably mounted on said first shaft, a second pulley secured on said second shaft, drive means comprising a belt trained around said first and second pulleys to rotatably position said typehead about its rotate axis, and means for rocking said tilt frame about said second shaft to select a row of type characters without twisting movement of said belt.
Claim 2
Dependent Claim
241 words
In a printing machine having a hollow downwardly open cupshaped typehead on which a plurality of type characters are located in columns and rows on its outer periphery, said typehead being adapted to be rotatably positioned about a rotate axis to select a column of type characters and to be tiltably positioned about a tilt axis to select a row of type characters, comprising, support means extending into the hollow interior of said typehead for supporting said typehead for movement about an external axis to effect printing of a type character at a selected row and column location, a first shaft defining said external axis, a second shaft parallel to said first shaft rotatably supported on the portion of said support means within said typehead, said second shaft defining said tilt axis, a tilt frame pivotally supported on said second shaft, a first gear rotatably supported on said tilt frame and having its axis along said rotate axis, means securing said typehead to said first gear, a second gear secured to said second shaft meshing with said first gear, a first pulley rotatably mounted on said first shaft, a second pulley secured on said second shaft, drive means comprising a belt trained around said first and second pulleys to rotatably position said typehead about its rotate axis, and means for rocking said tilt frame about said second shaft to select a row of type characters without twisting movement of said belt.
Claim 3
Dependent Claim
42 words
In a printing machine as recited in claim 1 said typehead having an upwardly extending central sleeve, said first gear having a hollow shaft extending through said sleeve, and said tilt frame having a cylindrical projection extending into said hollow gear shaft.
Claim 4
Dependent Claim
16 words
In a printing machine as recited in claim 1, wherein said rotate and tilt axis intersect.
Claim 5
Dependent Claim
13 words
In a printing machine as recited in claim 1, said typehead being barrel-shaped.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |