US3610495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escapement for card or tape reader
Assignee: Ricoh Co Ltd
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Filing: 1969-08-19
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Granted: 1971-10-05
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Expires: 1989-08-19
Abstract
Abstract In a card or tape reader of the type in which a ratchet wheel (escapement wheel) is imparted with a continuous torque and its rotation is controlled by controlling a stopper which engages with the teeth of the ratchet (escapement) wheel thereby intermittently feeding a paper tape or card, an electrical circuit arrangement for extending the control time of the stopper and more particularly a stopper control time extension circuit in parallel with a conventional control circuit. When a code or signal indicates that the reader is not required to be stopped, stopper holding current is supplied to a magnet which attracts the stopper. The feeding speed may be remarkably increased.
Inventors
- 👤 Noboru Murayama
- 👤 Shinichi Hirata
- 👤 Kinichi Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:52
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/18; G06K13/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
In an intermittent movement device for intermittently feeding a paper tape or card of the type in which a ratchet wheel is imparted with a continuous rotational force and the rotation of said ratchet wheel is controlled by controlling a stopper which engages with the teeth of said ratchet wheel, the improvement comprising an escapement having means for extending the control time of said stopper including a series circuit consisting of a flip-flop and a Darlington circuit, which series circuit is connected in parallel to a stopper control circuit.
Claim 2
Dependent Claim
89 words
In an intermittent movement device for intermittently feeding a paper tape or card of the type in which a ratchet wheel is imparted with a continuous rotational force and the rotation of said ratchet wheel is controlled by controlling a stopper which engages with the teeth of said ratchet wheel, the improvement comprising an escapement having means for extending the control time of said stopper including a series circuit consisting of a flip-flop and a Darlington circuit, which series circuit is connected in parallel to a stopper control circuit.
Claim 3
Dependent Claim
148 words
In an intermittent movement device for intermittently feeding a paper tape or card of the type in which a ratchet wheel is imparted with a continuous rotational force and the rotation of said ratchet wheel is controlled by controlling a stopper which engages with the teeth of said ratchet wheel, a magnet is adapted to be energized to attract and maintain said stopper out of engagement with said ratchet wheel, and said tape or card includes openings producing high level output when exposed to reading means, the improvement comprising said tape or card having a predetermined length absent of openings to produce a low-level output when exposed to said reading means; and circuit means electrically connected with said magnet and responsive to said low-level output, to energize said magnet and hold said stopper in attracted position when said tape or card is read out on said predetermined length.
Claim 4
Dependent Claim
148 words
In an intermittent movement device for intermittently feeding a paper tape or card of the type in which a ratchet wheel is imparted with a continuous rotational force and the rotation of said ratchet wheel is controlled by controlling a stopper which engages with the teeth of said ratchet wheel, a magnet is adapted to be energized to attract and maintain said stopper out of engagement with said ratchet wheel, and said tape or card includes openings producing high level output when exposed to reading means, the improvement comprising said tape or card having a predetermined length absent of openings to produce a low-level output when exposed to said reading means; and circuit means electrically connected with said magnet and responsive to said low-level output, to energize said magnet and hold said stopper in attracted position when said tape or card is read out on said predetermined length.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |