US4248540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printer arm
Assignee: Florida Data Corp
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Filing: 1979-04-13
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Granted: 1981-02-03
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Expires: 1999-04-13
Abstract
Abstract An arm for holding the impact stylus of a high speed dot matrix printer is fabricated from a single stamping which when properly folded defines two members having C-shaped cross-sections joined by a thin web. The web is folded around the stylus to bring the 4 legs of the two C-shaped members into overlapping relationship to define a hollow elongated and tapered arm having the stylus substantially wholly encircled by the web whereby after brazing the stylus is securely held.
Inventors
- 👤 James E. Bellinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:06
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/22; B41J2/23; B41J2/235; B41J2/25; B41J2/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
105 words
An arm and stylus assembly comprising a generally cylindrical stylus; a generally rectangular arm including two generally rectangular regions having short and long dimensions and a narrow web region lying therebetween, four outwardly extending regions each extending along a different one of said long dimensions of said rectangular regions and disposed at right angles thereto, said web region forming a generally semi-cylindrical member substantially encircling half of and in contact with and secured to said stylus, and said rectangular regions extending from said web regions in the same general direction along generally parallel paths with said outwardly extending regions overlapping and secured to one another.
Claim 2
Dependent Claim
105 words
An arm and stylus assembly comprising a generally cylindrical stylus; a generally rectangular arm including two generally rectangular regions having short and long dimensions and a narrow web region lying therebetween, four outwardly extending regions each extending along a different one of said long dimensions of said rectangular regions and disposed at right angles thereto, said web region forming a generally semi-cylindrical member substantially encircling half of and in contact with and secured to said stylus, and said rectangular regions extending from said web regions in the same general direction along generally parallel paths with said outwardly extending regions overlapping and secured to one another.
Claim 3
Dependent Claim
53 words
An arm and stylus assembly according to claim 1 wherein said outwardly extending regions are generally triangular regions and are tapered from a maximum outward extension from said rectangular regions remote from said web region to a minimum outward extension adjacent said web region whereby said rectangular regions gradually diverge from one another.
Claim 4
Dependent Claim
38 words
An arm and stylus assembly according to claim 2 wherein said generally triangular regions terminated in arcuate ends having the same radius of curvature as said stylus; said arcuate ends engaging said stylus in opposition to said web.
Claim 5
Dependent Claim
29 words
An arm and stylus assembly according to claim 1 wherein the center lines of said generally rectangular regions lie at an angle to one another of less than 180°.
Claim 6
Dependent Claim
126 words
An arm and stylus assembly comprising an arm extending in a given direction a generally cylindrical stylus having its axis extending generally perpendicular to said given direction said arm having two generally parallel walls each having two edges extending parallel to said given direction means securing said edges of one of said walls to adjacent said edges of the other of said walls, a web integral with and interconnecting said walls regions of said wall lying between said edges, said web forming generally a semi-cylinder having an axis generally coaxial with the axis of said stylus and having a diameter substantially equal to the outer diameter of said cylindrical stylus, said web partially surrounding and contacting said cylindrical stylus, said web being bonded to said stylus.
Claim 7
Dependent Claim
126 words
An arm and stylus assembly comprising an arm extending in a given direction a generally cylindrical stylus having its axis extending generally perpendicular to said given direction said arm having two generally parallel walls each having two edges extending parallel to said given direction means securing said edges of one of said walls to adjacent said edges of the other of said walls, a web integral with and interconnecting said walls regions of said wall lying between said edges, said web forming generally a semi-cylinder having an axis generally coaxial with the axis of said stylus and having a diameter substantially equal to the outer diameter of said cylindrical stylus, said web partially surrounding and contacting said cylindrical stylus, said web being bonded to said stylus.
Claim 8
Dependent Claim
72 words
The combination according to claim 5 further including pairs of members having arcuate surfaces formed generally at the terminii of said edges of both of said walls, said surfaces having radii of curvature substantially equal to the radius of curvature of said cylindrical stylus, said arcuate surfaces lying generally at right angles to the axis of said stylus and contacting said stylus generally in planes passing along said edges of said walls.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |