US3735698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print hammer for a printing machine
Assignee: US Philips Corp
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Filing: 1970-08-13
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Granted: 1973-05-29
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Expires: 1990-08-13
Abstract
Abstract A print hammer for a printing machine, particularly for a highspeed printing machine having a rotating or translating type support, comprising an impact beam, two supporting members for supporting the impact beam and at least one clamping means, the impact beam being movable in a direction parallel to its center line and relative to the clamping means, the supporting members during the displacement of the impact beam being subjected to bending. The impact beam, the supporting members and the clamping means are manufactured from the same material, preferably a synthetic resin, and constitute a hammer body which consists of a single part. The print hammer is particularly suitable for an electro-dynamic drive and comprises for that purpose an embedded magnet coil and embedded current conductors.
Inventors
- 👤 W Lenders
- 👤 H Post
- 👤 T Sie
- 👤 J Visscher
- 👤 M Quirijnen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:50
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/02; B41J9/127; B41J9/133
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
131 words
A print hammer for a printing machine comprising an impact beam, said impact beam having an impact face formed at one end thereof adapted to cause pressure impact against a print member, a pair of flexible supporting members attached at one end thereof to and extending from said impact beam substantially parallel to each other when said print hammer is in the stationary position, a thickened portion formed at the other end of said flexible supporting members forming means for clamping said print hammer to a stationary support block at the ends of the supporting members remote from the impact beam, said impact beam, said impact face said supporting members and said clamping means being integrally made of the same flexibly deformable synthetic resin, so as to form a unitary construction.
Claim 2
Dependent Claim
131 words
A print hammer for a printing machine comprising an impact beam, said impact beam having an impact face formed at one end thereof adapted to cause pressure impact against a print member, a pair of flexible supporting members attached at one end thereof to and extending from said impact beam substantially parallel to each other when said print hammer is in the stationary position, a thickened portion formed at the other end of said flexible supporting members forming means for clamping said print hammer to a stationary support block at the ends of the supporting members remote from the impact beam, said impact beam, said impact face said supporting members and said clamping means being integrally made of the same flexibly deformable synthetic resin, so as to form a unitary construction.
Claim 3
Dependent Claim
53 words
The print hammer according to claim 1 wherein the cross-section of said supporting members is rectangular having a width running in a direction transverse to the directional movement of the impact beam is constant throughout the length of said supporting member and is at least equal to the thickness of the impact beam.
Claim 4
Dependent Claim
53 words
The print hammer according to claim 2 wherein the portion of said supporting member being subjected to bending has a width when viewed in a cross-section taken parallel to the direction of movement of said impact beam which increases from a minimum at the center of said supporting member toward the ends thereof.
Claim 5
Dependent Claim
29 words
The print hammer according to claim 1 further comprising a connection beam formed integrally with said clamping means so that said print hammer is formed having a framed construction.
Claim 6
Dependent Claim
14 words
The print hammer according to claim 1 wherein said synthetic resin is a polyacetal.
Claim 7
Dependent Claim
20 words
The print hammer according to claim 1 further comprising reinforcement means embedded within said supporting members and said impact beam.
Claim 8
Dependent Claim
26 words
The print hammer according to claim 4 further comprising reinforcement means at least partially embedded within said impact beam, said supporting members and said connection beam.
References Cited (Backward Citations)
US3172352A
Cited
US3172353A
Cited
US3282203A
Cited
US3359921A
Cited
US3334409A
Cited
US3285166A
Cited
US3279362A
Cited
US3354820A
Cited
US3447455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |