Patent US3817367A successfully refreshed from Google Patents.
US3817367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed printer
Assignee: Pitney Bowes Inc
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Filing: 1972-09-01
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Granted: 1974-06-18
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Expires: 1992-09-01
Abstract
Abstract A high speed printer having a disc type matrix that is adapted to be rotatably driven to a plurality of selected print positions by means of a differential unit that includes two separate input motors. The simultaneous operation of these two motors is operative to decrease the average time required to selectively index the type matrix to said print positions and thus enables the printer to attain higher operative speeds.
Inventors
- 👤 H Tramposch
- 👤 D Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:37
CPC Classifications
B; B41; B41J; B41J7/00; B41J7/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
160 words
In a high speed printing device having a print receiving sheet supporting means, a type matrix, a hammer means adapted to cause a selected type on said matrix to impact print on a print receiving sheet carried by said supporting means; a carrier frame supporting said type matrix for rotary movement; means mounting said frame and said sheet supporting means for relative movement; and a stepping motor having an output shaft connected to rotatably index said type matrix when said motor is operated; the improvement comprising means for rotatably mounting the housing of said stepping motor for swinging movement to at least two predetermined indexed positions relative to said frame; and power actuating means for selectively indexing said motor housing to its said positions relative to said frame, said type matrix thereby being capable of being selectively displaced to a plurality of predetermined rotative print positions by the combined operation of said stepping motor shaft and said power actuating means.
Claim 2
Dependent Claim
160 words
In a high speed printing device having a print receiving sheet supporting means, a type matrix, a hammer means adapted to cause a selected type on said matrix to impact print on a print receiving sheet carried by said supporting means; a carrier frame supporting said type matrix for rotary movement; means mounting said frame and said sheet supporting means for relative movement; and a stepping motor having an output shaft connected to rotatably index said type matrix when said motor is operated; the improvement comprising means for rotatably mounting the housing of said stepping motor for swinging movement to at least two predetermined indexed positions relative to said frame; and power actuating means for selectively indexing said motor housing to its said positions relative to said frame, said type matrix thereby being capable of being selectively displaced to a plurality of predetermined rotative print positions by the combined operation of said stepping motor shaft and said power actuating means.
Claim 3
Dependent Claim
22 words
Apparatus as defined by claim 1 wherein said type matrix comprises a disc, and wherein said power actuating means comprises a solenoid.
Claim 4
Dependent Claim
66 words
Apparatus as defined by claim 1 wherein the said housing of said stepping motor is mounted for swinging movement about said output shaft whereby said motor may rotatably index said shaft and matrix and said motor housing may be independently rotatably indexed relative to said frame, whereby said matrix may be rotatably indexed by the combined action of said stepping motor and said power actuated means.
References Cited (Backward Citations)
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Cited
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |