Patent US3739897A successfully refreshed from Google Patents.
US3739897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal actuator for impacting a serial printer print head
Assignee: Bull HN Information Systems Italia SpA
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Filing: 1970-12-01
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Granted: 1973-06-19
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Expires: 1990-12-01
Abstract
Abstract A novel internal actuator for impacting the print head of a high speed serial printer with a print medium is disclosed. The internal actuator engages the interior of a rotatably and axially positionable print head and causes the latter to impact the print medium. The internal actuator includes a pivotal yoke portion and a neck portion, the latter of which extends into the interior of the print head. The pivotal yoke portion provides a fixed point about which the print head moves while the neck portion provides a firm mounting for both the positioned print head and the positioning shaft structure which is contained therein.
Inventors
- 👤 C Pateuk
- 👤 H Shneider
- 👤 S Cahill
- 👤 J Bath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:43
CPC Classifications
B; B41; B41J; B41J23/00; B41J23/32; B41J23/34; B41J23/36; B41J7/00; B41J7/50; B41J7/52
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
219 words
In a serial printer for impact printing a line of characters, a character at a time, onto a print medium, impacting apparatus comprising: a platform moveably only in spaced character increments in a path parallel to the print line; a print head aligned along an axis perpendicular to the print line, said print head comprising a hollow shell with a font of characters formed thereon; positioning means, lying along the axis perpendicular to the print line and attached to said platform, for positioning a given character on said print head, said positioning means comprising; an axially moveable shaft, and axial drive means for driving said axially moveable shaft, and a rotationally moveable shaft, and a rotational drive means for driving said rotationally moveable shaft; means for pivoting Said print head toward the print line, said pivotal means surrounding both said axially moveable shaft and said rotationally moveable shaft and engaging the interior of said print head; and means for pivotally attaching said pivotal means to said platform so as to define a fixed pivotal axis for said pivotal means; said fixed pivotal axis of said pivotal means intersecting the rotationally moveable shaft, said rotational and axial shafts both extending below said fixed pivotal axis, said axial drive means and rotational drive means being located below said fixed pivotal axis.
Claim 2
Dependent Claim
219 words
In a serial printer for impact printing a line of characters, a character at a time, onto a print medium, impacting apparatus comprising: a platform moveably only in spaced character increments in a path parallel to the print line; a print head aligned along an axis perpendicular to the print line, said print head comprising a hollow shell with a font of characters formed thereon; positioning means, lying along the axis perpendicular to the print line and attached to said platform, for positioning a given character on said print head, said positioning means comprising; an axially moveable shaft, and axial drive means for driving said axially moveable shaft, and a rotationally moveable shaft, and a rotational drive means for driving said rotationally moveable shaft; means for pivoting Said print head toward the print line, said pivotal means surrounding both said axially moveable shaft and said rotationally moveable shaft and engaging the interior of said print head; and means for pivotally attaching said pivotal means to said platform so as to define a fixed pivotal axis for said pivotal means; said fixed pivotal axis of said pivotal means intersecting the rotationally moveable shaft, said rotational and axial shafts both extending below said fixed pivotal axis, said axial drive means and rotational drive means being located below said fixed pivotal axis.
Claim 3
Dependent Claim
29 words
The impacting apparatus of claim 1 wherein the pivotal means includes a hollow cylindrical neck extending upwardly into said print head and engaging the interior of said print head.
Claim 4
Dependent Claim
45 words
The impacting apparatus of claim 2 wherein the interior of said hollow cylindrical neck rotatably supports said rotationally moveable shaft so as to provide a rigid, substantially straight line radius of pivot from said fixed pivotal axis of said pivotal means to said print head.
Claim 5
Dependent Claim
54 words
The impacting apparatus of claim 3 wherein said rotationally moveable shaft comprises an upper shaft portion and a lower shaft portion and a flexible coupling fixedly attached to said upper shaft portion and to said lower shaft portion, said flexible coupling being located so as to intersect said pivotal axis of said pivotal means.
Claim 6
Dependent Claim
55 words
The impacting apparatus of claim 4 wherein said upper shaft portion and said lower shaft portion of said rotationally moveable shaft comprise hollow shafts and said flexible coupling comprises a hollow helical cylinder connected to said upper and lower shaft portions said axially moveable shaft is encompassed by said hollow shafts and said flexible coupling.
Claim 7
Dependent Claim
64 words
The impacting apparatus of claim 5 wherein said means for pivotally attaching said pivotal means to said platform comprises: a pair of support mounts extending upwardly from said platform, and a pair of pins each of which passes through a support mount to said pivotal means, said pair of pins being aligned so as to defined said fixed pivotal axis of said pivotal means.
Claim 8
Dependent Claim
54 words
The impacting apparatus of claim 1 wherein said rotationally moveable shaft comprises an upper shaft portion and a lower shaft portion and a flexible coupling fixedly attached to said upper shaft portion and to said lower shaft portion, said flexible coupling being located so as to intersect said pivotal axis of said pivotal means.
Claim 9
Dependent Claim
56 words
The impacting apparatus of claim 7 wherein said upper shaft portion and said lower shaft portion of said rotationally moveable shaft comprise hollow shafts and said flexible coupling comprises a hollow helical cylinder connected to said upper and lower shaft portions and said axially moveable shaft is encompassed by said hollow shafts and said flexible coupling.
Claim 10
Dependent Claim
44 words
The impacting apparatus of claim 7 wherein said pivotal means comprises a hollow cylindrical neck which supportably mounts said upper shaft portion of said rotatable shaft so as to provide a rigid substantially straight line configuration between said flexible coupling and said print head.
Claim 11
Dependent Claim
66 words
The apparatus of claim 9 wherein said hollow cylindrical neck extends upwardly into the interior of said print head for a distance at least equal to the axial length of the font of characters formed on the exterior of said print head so that any row of axially positioned characters which is to be impact printed is always rearwardly engaged by said hollow cylindrical neck portion.
Claim 12
Dependent Claim
64 words
The impacting apparatus of claim 9 wherein said means for pivotally attaching said pivotal means to said platform comprises: a pair of support mounts extending upwardly from said platform and a pair of pins each of which passes through a support mount to said pivotal means, said pair of pins being aligned so as to define said fixed pivotal axis of said pivotal means.
Claim 13
Dependent Claim
64 words
The impacting apparatus of claim 1 wherein said means for pivotally attaching said pivotal means to said pLatform comprises: a pair of support mounts extending upwardly from said platform, and a pair of pins each of which passes through a support mount and said pivotal means, said pair of pins being aligned so as to define said fixed pivotal axis of said pivotal means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |