Patent US3693544A successfully refreshed from Google Patents.
US3693544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printout drum
Assignee: Electronic Precision Industries Corp
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Filing: 1970-04-02
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Granted: 1972-09-26
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Expires: 1990-04-02
Abstract
Abstract A printout drum in which a metal tubular member carrying a plurality of characters on its outside surface has a centrally positioned shaft which is rigidly fastened to the tubular member by means of a hardenable resinous filler material filling at least a portion of the tubular member.
Inventors
- 👤 Charles J Trzyna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:32
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/06; B; B41; B41J; B41J1/00; B41J1/22; B41J1/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
213 words
A printout drum which comprises: a metal tubular member having a circular cross-sectional configuration and having a plurality of characters on its outer surface; a solid, substantially rigid, resinous filler material filling at least a portion of said tubular member; a centrally positioned shaft located coaxially with said tubular member and spaced from the inner surface thereof, said shaft having a segment embedded in said filler material to thereby maintain the axial and coaxial positioning of said shaft fixed and stationarY with relation to said tubular member; said filler material including a cylindrical portion in engagement with the inner surface of said metal tubular member and spaced from said shaft to define a cavity surrounding said shaft, and a disc-like annular portion formed integral with said cylindrical portion and disposed at one end of said metal tubular member, transversely to the axis thereof, with said shaft segment being embedded in said disc-like annular portion of the filler material, and a removable closure means positioned at the opposite end of said tubular member with said shaft being disposed in an aperture formed in said closure means, said closure means cooperating with said cylindrical portion of the filler material to seal said cavity when in place and to allow access to said cavity upon removal.
Claim 2
Dependent Claim
213 words
A printout drum which comprises: a metal tubular member having a circular cross-sectional configuration and having a plurality of characters on its outer surface; a solid, substantially rigid, resinous filler material filling at least a portion of said tubular member; a centrally positioned shaft located coaxially with said tubular member and spaced from the inner surface thereof, said shaft having a segment embedded in said filler material to thereby maintain the axial and coaxial positioning of said shaft fixed and stationarY with relation to said tubular member; said filler material including a cylindrical portion in engagement with the inner surface of said metal tubular member and spaced from said shaft to define a cavity surrounding said shaft, and a disc-like annular portion formed integral with said cylindrical portion and disposed at one end of said metal tubular member, transversely to the axis thereof, with said shaft segment being embedded in said disc-like annular portion of the filler material, and a removable closure means positioned at the opposite end of said tubular member with said shaft being disposed in an aperture formed in said closure means, said closure means cooperating with said cylindrical portion of the filler material to seal said cavity when in place and to allow access to said cavity upon removal.
Claim 3
Dependent Claim
42 words
A printout drum as defined in claim 1, wherein said segment of the shaft embedded in said filler material includes locking means which positively retain the relative positioning of said shaft with respect to said tubular member during operation of said drum.
Claim 4
Dependent Claim
16 words
A printout drum as defined in claim 1, wherein said filler material comprises a polyurethane foam.
Claim 5
Dependent Claim
22 words
A printout drum as defined in claim 3, wherein said polyurethane foam has a density of about 5 lbs. per cubic foot.
Claim 6
Dependent Claim
55 words
A printout drum as defined in claim 1, wherein said tubular member has a longitudinal seam extending the length thereof said seam being defined by inwardly turned ends of a metal sheath used to form said tubular member, and a clasp member engaged with said inwardly turned ends to maintain the integrity of said seam.
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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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |