Patent US4900175A successfully refreshed from Google Patents.
US4900175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platen assembly
Assignee: Citizen Watch Co Ltd
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Filing: 1989-03-30
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Granted: 1990-02-13
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Expires: 2009-03-30
Abstract
Abstract A platen assembly has a pipe shaft having an elastomeric layer therearound, an end of the pipe shaft having cutouts therein extending parallel to the axis thereof and having locking holes therein between the cutouts, and a power transmission member connected to the end of the pipe shaft, the power transmission member having first convexities removably engaged in the cutouts for holding the member against rotation relative to the pipe shaft, and second convexities resiliently removably engaged in the locking holes for holding the member against disengagement from the pipe shaft.
Inventors
- 👤 Hiroshi Ikeda
- 👤 Takashi Sawada
- 👤 Mitsuo Bansho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:08
CPC Classifications
B; B41; B41J; B41J11/00; B41J11/02; B41J11/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A platen assembly comprising: a pipe shaft having an elastomeric layer therearound, an end of said pipe shaft having cutouts therein extending parallel to the axis thereof and having locking holes therein between said cutouts; and a power transmission member connected to said end of said pipe shaft, said power transmission member having first convexities removably engaged in said cutouts for holding said member against rotation relative to said pipe shaft, and second convexities resiliently removably engaged in said locking holes for holding said member against disengagement from said pipe shaft.
Claim 2
Dependent Claim
91 words
A platen assembly comprising: a pipe shaft having an elastomeric layer therearound, an end of said pipe shaft having cutouts therein extending parallel to the axis thereof and having locking holes therein between said cutouts; and a power transmission member connected to said end of said pipe shaft, said power transmission member having first convexities removably engaged in said cutouts for holding said member against rotation relative to said pipe shaft, and second convexities resiliently removably engaged in said locking holes for holding said member against disengagement from said pipe shaft.
Claim 3
Dependent Claim
59 words
A platen assembly as claimed in claim 1 in which said power transmission member has a circumferential space therein having radially extending arms extending thereacross which constitute said first convexities, said radially extending arms being movable into said cutouts as said power transmission member is moved onto said pipe shaft with the pipe shaft passing through said circumferential space.
Claim 4
Dependent Claim
51 words
A platen assembly as claimed in claim 2 in which said power transmission member has a cylindrical shaft portion and an annular boss having a gear therearound and spaced therefrom to define said circumferential space, and said radially extending arms being on one of said boss and said cylindrical shaft portion.
Claim 5
Dependent Claim
18 words
A platen assembly as claimed in claim 3 in which said radially extending arms are on said boss.
Claim 6
Dependent Claim
44 words
A platen assembly as claimed in claim 1 in which said power transmission member has a plurality of arms thereon extending parallel to the axis thereof and resiliently movable radially of said member, said arms having radially extending projections thereon constituting said second convexities.
Claim 7
Dependent Claim
29 words
A platen assembly as claimed in claim 5 in which said power transmission member has a cylindrical shaft portion having a plurality of U-shaped grooves therein defining said arms.
Claim 8
Dependent Claim
69 words
A platen assembly as claimed in claim 6 in which said projections on said arms project radially outwardly and said arms are resiliently movable inwardly of said cylindrical shaft portion as said power transmission member is moved onto said end of said pipe shaft for causing said projections to be moved inwardly and along the inner surface of said pipe shaft and then radially outwardly into said locking holes.
References Cited (Backward Citations)
US3393789A
Cited
GB1441348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |