Patent US3848722A successfully refreshed from Google Patents.
US3848722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print disc assembly for a printer
Assignee: International Business Machines Corp
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Filing: 1973-05-21
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Granted: 1974-11-19
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Expires: 1993-05-21
Abstract
Abstract In a printer a print disc assembly comprises a central support wheel having a plurality of axial openings adjacent to periphery. A spoked type disc is secured to one side of the wheel and a spoked interposer to the other side. Slideable slugs in the axial openings transmit impact energy from the interposer to the type disc for printing.
Inventors
- 👤 L Weber
- 👤 J Drejza
- 👤 C Holovka
- 👤 P Bolan
- 👤 A Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:54
CPC Classifications
B; B41; B41J; B41J1/00; B41J1/22; B41J1/24; B41J1/28; B41J1/30; Y; Y10; Y10S; Y10S400/00; Y10S400/901
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
117 words
In a print disc assembly for a printer having a movable carriage with a rotatable support shaft; a support wheel secured to and rotatable with said shaft having a plurality of axial openings through said wheel adjacent the periphery thereof; a resilient spoked print disc mounted on one side of and secured to said support wheel having integral type characters adjacent the ends of said spokes; a plurality of slugs slideably disposed in said openings to engage different ones of said spokes, and a resilient spoked interposer secured to and rotatable with said support wheel on the other side with the spokes of said interposer normally biasing said slugs against the corresponding spokes of said print disc.
Claim 2
Dependent Claim
117 words
In a print disc assembly for a printer having a movable carriage with a rotatable support shaft; a support wheel secured to and rotatable with said shaft having a plurality of axial openings through said wheel adjacent the periphery thereof; a resilient spoked print disc mounted on one side of and secured to said support wheel having integral type characters adjacent the ends of said spokes; a plurality of slugs slideably disposed in said openings to engage different ones of said spokes, and a resilient spoked interposer secured to and rotatable with said support wheel on the other side with the spokes of said interposer normally biasing said slugs against the corresponding spokes of said print disc.
Claim 3
Dependent Claim
27 words
The invention as defined in claim 1 characterized by said support wheel having integral hub portions on opposite sides to receive said print disc and said interposer.
Claim 4
Dependent Claim
43 words
The invention as defined in claim 2 characterized by said support wheel having a shoulder concentric with said wheel on the interposer side engaging said interposer spokes at less than one fifth the distance from the periphery of said interposer to the center.
Claim 5
Dependent Claim
28 words
The invention as defined in claim 3 characterized by a resilient detuning ring loosely mouNted on said shoulder said support wheel between said slugs and said interposer spokes.
Claim 6
Dependent Claim
19 words
The invention as defined in claim 4 characterized by said type disc being detachably secured to said support wheel.
Claim 7
Dependent Claim
29 words
The invention as defined in claim 5 characterized by said print disc having a damper ring secured thereto intermediate said type characters and the center of said type disc.
Claim 8
Dependent Claim
16 words
The invention as defined in claim 6 characterized by metal ring secured to said damper ring.
Claim 9
Dependent Claim
43 words
The invention as defined in claim 4 characterized by said detuning ring acting as a stop between said interposer and said support wheel to limit movement of said interposer spokes and minimize nipping between an impacting print hammer and an adjacent interposer spoke.
Claim 10
Dependent Claim
49 words
The invention as defined in claim 1 characterized by said shaft having a shoulder portion with an inclined surface engaging the type character side of said print disc and having means to bias said print disc assembly against said inclined surface to prestress said spokes of said print disc.
Claim 11
Dependent Claim
30 words
The invention as defined in claim 1 characterized by said slugs being contoured to provide different centers of mass in accordance with the effective centers of the associated type characters.
References Cited (Backward Citations)
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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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |