US3977761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bar lens array cleaning device
Assignee: Ricoh Co Ltd
•
Filing: 1975-05-27
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Granted: 1976-08-31
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Expires: 1995-05-27
Abstract
Abstract A plastic casing in which bar lenses are imbedded is formed with longitudinal grooves in the sides thereof. The bifurcations of a bifurcated pull rod are guidingly slidable in the grooves. A frame is connected to the pull rod for movement therewith and has portions facing the end faces of the bar lenses to which is fixed a cleaning material such as cloth. Movement of the pull rod, frame and cleaning material results in the cleaning material moving over the faces of the bar lenses to clean the same.
Inventors
- 👤 Motoaki Kawazu
- 👤 Masataka Ide
- 👤 Atsushi Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:27
CPC Classifications
G; G02; G02B; G02B7/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
In a light transmission device having a plurality of elongated light transmitting members joined together in a row, the combination therewith of: a cleaning material; and means for guidably producing relative movement between the cleaning material and the light transmitting members in the row direction so that the cleaning material contacts the end faces of the light transmitting members to clean the end faces of the light transmitting members.
Claim 2
Dependent Claim
69 words
In a light transmission device having a plurality of elongated light transmitting members joined together in a row, the combination therewith of: a cleaning material; and means for guidably producing relative movement between the cleaning material and the light transmitting members in the row direction so that the cleaning material contacts the end faces of the light transmitting members to clean the end faces of the light transmitting members.
Claim 3
Dependent Claim
14 words
The device of claim 1, in which the light transmitting members are bar lenses.
Claim 4
Dependent Claim
40 words
The device of claim 1, in which the light transmitting members are fixed and the means comprises a movable frame member having portions facing the end faces of the light transmitting members, the cleaning material being provided on said portions.
Claim 5
Dependent Claim
19 words
The device of claim 3, in which the means further comprises a handle member connected to the frame member.
Claim 6
Dependent Claim
46 words
The device of claim 4, further comprising a retaining member for rigidly retaining the light transmitting members, the retaining member being formed with a groove in the row direction, the handle member being slidable in the groove and guided thereby for movement in the row direction.
Claim 7
Dependent Claim
108 words
The device of claim 1, further comprising a retaining member for rigidly retaining the light transmitting members, the retaining member being formed with a pair of opposed grooves extending in the row direction, the means comprising a bifurcated member, the bifurcations of which are slidably and guidingly engageable in the grooves in the retaining member and a frame member connected to the bifurcated member and having portions facing the end faces of the light transmitting members, the cleaning material being provided on said portions to physically engage with and clean the faces of the light transmitting members upon relative movement of the frame member and the retaining member.
Claim 8
Dependent Claim
32 words
The device of claim 6, in which the retaining member and thereby the light transmitting members are fixed and the bifurcated member and thereby the frame member and cleaning material are movable.
References Cited (Backward Citations)
US3402418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |