US3899659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic card reader
Assignee: Sharp Corp
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Filing: 1973-08-24
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Granted: 1975-08-12
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Expires: 1993-08-24
Abstract
Abstract The present disclosure is directed to a magnetic credit card reader wherein an upper frame carrying a drive roller-containing transport mechanism for transporting a magnetic card is rotatably secured with the use of a spring in a manner to allow modification of the relative position thereof with respect to a lower frame disposed at a fixed position. With such arrangement, the magnetic card can be transported under pressure of substantially the same value irrespective of the thickness of the magnetic card during read and write operations on the card. The drive roller is stair-shaped and is made preferrably of elastic materials to provide stable transport operations.
Inventors
- 👤 Siyunzi Nakai
- 👤 Masazumi Nakarai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/07
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
163 words
A magnetic card reader for reading information from a card containing a magnetic record thereon comprising: magnetic head means for reading information from said card as said card traverses said head means; a lower frame carrying said head means; an upper frame carrying a drive roller means; and positioning means for placing said drive roller means in alignment with said magnetic head means and causing the direct engagement of said card between said drive roller means and said magnetic head means, said drive roller means including rollers disposed only on the opposite side of the card from said magnetic head means and in alignment with said head means when so positioned by said positioning means; and support means for said card on said lower frame consisting only of said magnetic head means and guide means for engaging the edges of said card; whereby the only element which contacts said magnetic record is said magnetic head means, thus minimizing wear of said magnetic record.
Claim 2
Dependent Claim
163 words
A magnetic card reader for reading information from a card containing a magnetic record thereon comprising: magnetic head means for reading information from said card as said card traverses said head means; a lower frame carrying said head means; an upper frame carrying a drive roller means; and positioning means for placing said drive roller means in alignment with said magnetic head means and causing the direct engagement of said card between said drive roller means and said magnetic head means, said drive roller means including rollers disposed only on the opposite side of the card from said magnetic head means and in alignment with said head means when so positioned by said positioning means; and support means for said card on said lower frame consisting only of said magnetic head means and guide means for engaging the edges of said card; whereby the only element which contacts said magnetic record is said magnetic head means, thus minimizing wear of said magnetic record.
Claim 3
Dependent Claim
63 words
A magnetic card reader as defined in claim 1 wherein said drive roller means comprises at least a pair of rollers mounted on a common axis; said rollers being resilient and of different respective diameters, whereby an edge of said card is urged against said guide means by said rollers to facilitate proper alignment of said magnetic record with said magnetic head means.
Claim 4
Dependent Claim
51 words
A magnetic card reader as defined in claim 1 further comprising a clear roller means for removing dust attached to the record area of the card, said clear roller being disposed on said lower frame, said clear roller consisting of a soft material which prEvents damage to the magnetic record area.
Claim 5
Dependent Claim
23 words
A magnetic card reader as defined in claim 1 wherein said guide means is adjustably positioned with respect to a selected card edge.
Claim 6
Dependent Claim
44 words
A magnetic card reader as defined in claim 1 further comprising photodetection means for detecting the position of the card and generating output signals in response thereto, said output signals from the detection means having the function of controlling the card transport drive system.
References Cited (Backward Citations)
US2249505A
Cited
US3084931A
Cited
US3330458A
Cited
US3470358A
Cited
US3424454A
Cited
US3562495A
Cited
US3586790A
Cited
US3629556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |