US4488036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keycard reader
Assignee: Yale Security Inc
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Filing: 1982-09-23
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Granted: 1984-12-11
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Expires: 2002-09-23
Abstract
Abstract Keycard reader has entry slot aimed at an angle to the vertical and a vertical lower portion so that flexible keycard is bent as it is inserted. This provides a convenient entry, precludes the malicious insertion of coins, sticks, and other objects into reader to render it inoperative, blocks light into the reader and makes it unnecessary to make an enlarged opening in the door to receive the lock.
Inventors
- 👤 Lawrence D. Butts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:02
CPC Classifications
E; E05; E05B; E05B27/00; E05B49/00; E05B49/002; E05B49/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
155 words
A keycard reader for a high security electronic lock exposed to public vandalism and adapted to read a stiffly flexible security keycard and comprising a flat housing for mounting on a vertical surface, the housing having an upwardly and outwardly facing surface formed with an elongate slot for reception of the keycard, guide means in the housing commencing adjacent the slot with a channel portion whose entrant angle is in the range of 20° to 40° to the vertical, the guide means rapidly curving in a radius of about 0.5 inches to a vertical run parallel to the vertical surface, and reading means on the vertical run adjacent said curved portion, whereby the keycard can be conveniently inserted into the slot and the card will bend through the curved portion and straighten out adjacent the reader and, whereby the rapidly curving guide means will thwart the malicious introduction into the slot of rigid foreign bodies.
Claim 2
Dependent Claim
155 words
A keycard reader for a high security electronic lock exposed to public vandalism and adapted to read a stiffly flexible security keycard and comprising a flat housing for mounting on a vertical surface, the housing having an upwardly and outwardly facing surface formed with an elongate slot for reception of the keycard, guide means in the housing commencing adjacent the slot with a channel portion whose entrant angle is in the range of 20° to 40° to the vertical, the guide means rapidly curving in a radius of about 0.5 inches to a vertical run parallel to the vertical surface, and reading means on the vertical run adjacent said curved portion, whereby the keycard can be conveniently inserted into the slot and the card will bend through the curved portion and straighten out adjacent the reader and, whereby the rapidly curving guide means will thwart the malicious introduction into the slot of rigid foreign bodies.
Claim 3
Dependent Claim
17 words
A keycard reader as claimed in claim 1 wherein the entrant angle is 25° from the vertical.
Claim 4
Dependent Claim
24 words
A keycard reader as claimed in claim 1 wherein the upwardly and outwardly facing surface is at an angle of about 65° from vertical.
Claim 5
Dependent Claim
38 words
A keycard reader as claimed in claim 1 wherein the guideways position the portion of card therein below the reading means in a vertical disposition approximately halfway between the vertical surface and the outside wall of the housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |