US3593657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined print hammer module and printed circuit board
Assignee: SCM-P&S Inc
•
Filing: 1968-05-13
•
Granted: 1971-07-20
•
Expires: 1988-05-13
Abstract
Abstract There is disclosed a fragmentary portion of a printer having print hammer modules, each module having a frame, print hammers, and print hammer operators, and a printed circuit board.
Inventors
- 👤 John Guzak Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:18
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/02; B41J9/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
An impact printing apparatus including a plurality of electronically driven print hammers which strike a recording surface at an impact zone, wherein the improvement comprises: modules carrying groups of print hammers, print hammer driving mechanisms, and first electrical contact means for supplying electrical power to said driving mechanisms; means defining positioning channels approximately perpendicular to the recording surface at the impact zone into which said modules may be slid into printing position; fastening means for securing said modules in printing position; and second electrical contact means positioned adjacent the means defining positioning channels and engaging said first electrical contact means on each module when the module is in printing position; whereby each module may be easily and quickly removed from and returned to said printing apparatus.
Claim 2
Dependent Claim
126 words
An impact printing apparatus including a plurality of electronically driven print hammers which strike a recording surface at an impact zone, wherein the improvement comprises: modules carrying groups of print hammers, print hammer driving mechanisms, and first electrical contact means for supplying electrical power to said driving mechanisms; means defining positioning channels approximately perpendicular to the recording surface at the impact zone into which said modules may be slid into printing position; fastening means for securing said modules in printing position; and second electrical contact means positioned adjacent the means defining positioning channels and engaging said first electrical contact means on each module when the module is in printing position; whereby each module may be easily and quickly removed from and returned to said printing apparatus.
Claim 3
Dependent Claim
31 words
An impact printer in accordance with claim 1 wherein the modules also carry a printed circuit board supporting printed circuits which couple the first electrical contact means to the driving mechanisms.
Claim 4
Dependent Claim
27 words
An impact printer in accordance with claim 2 wherein at least part of the control circuitry for the driving mechanisms is attached to the printed circuit board.
Claim 5
Dependent Claim
22 words
An impact printer in accordance with claim 1 wherein the modules are planar and wherein the positioning channels engage the module edges.
Claim 6
Dependent Claim
66 words
An impact printer in accordance with claim 1 wherein the fastening means for each module include an elongated, pivotable lever perpendicularly attached to the end of the corresponding means defining a positioning channel and adjustable screw means passing through said lever and into the means defining a positioning channel, whereby a module can be removed by loosening the corresponding screw means and rotating the corresponding lever.
References Cited (Backward Citations)
US2955758A
Cited
US2955755A
Cited
US2874634A
Cited
US2940385A
Cited
US2915968A
Cited
US3118721A
Cited
US3233224A
Cited
US3289575A
Cited
US3349646A
Cited
US3418928A
Cited
US3499382A
Cited
US3429258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |