US4159173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling a reverse time of a manuscript carriage, etc. for electrographic apparatuses
Assignee: Olympus Corp
•
Filing: 1977-04-25
•
Granted: 1979-06-26
•
Expires: 1997-04-25
Abstract
Abstract A device for controlling a reverse time of a manuscript carriage, etc. for electrographic apparatuses is disclosed. The device comprises means for disengaging a forward movement electromagnetic clutch from a manuscript carriage or optical system driving mechanism and, after a lapse of time from the moment of disengaging the forward movement clutch from the manuscript carriage or optical system driving mechanism, for driving a backward movement clutch. The device is capable of effectively prevent the backward movement clutch and a carriage supporting plate, etc. from being subjected to heavy load and of effecting a reciprocal movement of the manuscript carriage or optical system in a smooth manner.
Inventors
- 👤 Muneo Kasuga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:39
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6221; G03B27/6235
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
A device for controlling a reverse time of a manuscript carriage and the like for an electrographic apparatus having an electric circuit including a direct current supply source, a start switch means including: a first relay, said start switch means and first relay being connected in series across said direct current supply source, a change-over switch operatively associated with a projection secured to the lower surface of a manuscript carriage and connected through a contact arm of said first relay, and a contact arm of said change-over switch connected to a first contact point thereof in parallel with said start switch, a second relay connected through a normally closed switch operatively associated with said projection and a contact arm of said second relay across said direct current supply source, a timer circuit connected to a contact arm and to a second contact point of said change-over switch and to a connection point between said normally closed contact arm and said contact arm of said second relay, said timer circuit having a time constant of several hundreds milliseconds, a forward movement electromagnetic clutch connected through a contact arm of said first relay across said direct current supply source, and a backward movement electromagnetic clutch connected through a contact arm of said second relay across said direct currect supply source.
Claim 2
Independent Claim
218 words
A device for controlling a reverse time of a manuscript carriage and the like for an electrographic apparatus having an electric circuit including a direct current supply source, a start switch means including: a first relay, said start switch means and first relay being connected in series across said direct current supply source, a change-over switch operatively associated with a projection secured to the lower surface of a manuscript carriage and connected through a contact arm of said first relay, and a contact arm of said change-over switch connected to a first contact point thereof in parallel with said start switch, a second relay connected through a normally closed switch operatively associated with said projection and a contact arm of said second relay across said direct current supply source, a timer circuit connected to a contact arm and to a second contact point of said change-over switch and to a connection point between said normally closed contact arm and said contact arm of said second relay, said timer circuit having a time constant of several hundreds milliseconds, a forward movement electromagnetic clutch connected through a contact arm of said first relay across said direct current supply source, and a backward movement electromagnetic clutch connected through a contact arm of said second relay across said direct currect supply source.
References Cited (Backward Citations)
US3008074A
Cited
US3230435A
Cited
US3743274A
Cited
US3566228A
Cited
US3711198A
Cited
US4012138A
Cited
US3997262A
Cited
US3990792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |