High speed impact print hammer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 25, 1999
Grant Date -
N/A
app pub date -
May 6, 1998
filing date -
May 6, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An impact hammer assembly for a high speed printer includes first and second permanent magnets having opposite poles disposed adjacent to each other and having a gap therebetween. The magnets create flux lines extending across the gap. A print hammer includes a hammer beam and a hammer head. The print hammer is movable between a rest position and a print position. The hammer beam is disposed in the gap between the first and second magnets. A coil is disposed on the hammer beam and perpendicular to the magnetic flux lines. Circuitry generates a current in the coil and controls the direction of current flow in the coil, such that when current flows in the coil in a first direction, the print hammer moves towards the print position and when current flows in the coil in a second direction, opposite to the first direction, the print hammer moves towards the rest position.
First Claim
all claims..Other Claims data not available
Family
- No Family data available.
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
BANCTEC INC A CORP OF DELAWARE | 4851 LBJ FREEWAY DALLAS TX 75082 |
International Classification(s)

- 1998 Application Filing Year
- B41J Class
- 1686 Applications Filed
- 945 Patents Issued To-Date
- 56.05 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mazumder, Ali T | Oklahoma City, OK | 13 | 187 |
# of filed Patents : 13 Total Citations : 187 |
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Patent Citation Ranking
- 1 Citation Count
- B41J Class
- 1.81 % this patent is cited more than
- 26 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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