Patent US3584485A successfully refreshed from Google Patents.
US3584485A
Expired / Lapsed
US
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Magnetic lock and key
Assignee: Individual
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Filing: 1969-08-12
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Granted: 1971-06-15
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Expires: 1989-08-12
Abstract
Abstract The invention is for an electric lock wherein a magnetic bolt is worked by a magnetic key and the key is designed to work the bolt only when inserted with the proper polarity.
Inventors
- 👤 Oliver A Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:47
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0038; E05B47/004; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1021; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5097; Y10T70/5111; Y10T70/70; Y10T70/7051; Y10T70/7057
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
A magnetic lock comprising a casing means with a first guide means having a bolt reciprocable therein, and a second guide means accommodating a key for operating the bolt, said key having a portion with a magnetic north pole and another portion with a magnetic south pole, and said bolt having portions with opposite poles, the arrangement is such that when one pole of the key is inserted in the second guide means and brought close to a portion of the bolt having opposite polarity the bolt is drawn thereto and thus made to clear a keeper, but when the key is retracted away from the bolt, the bolt is free to return to a position to engage a keeper, the bolt includes a stem having an enlarged integral head, the first guide means having a small bore to accommodate the stem and a larger communicating bore to accommodate the head of the bolt, and the casing means including a plug closing one end of the larger bore, said plug having a bore forming said second guide means with one end open and another end closed so that when a portion of the key is inserted therein said key cannot enter into the larger bore.
Claim 2
Dependent Claim
205 words
A magnetic lock comprising a casing means with a first guide means having a bolt reciprocable therein, and a second guide means accommodating a key for operating the bolt, said key having a portion with a magnetic north pole and another portion with a magnetic south pole, and said bolt having portions with opposite poles, the arrangement is such that when one pole of the key is inserted in the second guide means and brought close to a portion of the bolt having opposite polarity the bolt is drawn thereto and thus made to clear a keeper, but when the key is retracted away from the bolt, the bolt is free to return to a position to engage a keeper, the bolt includes a stem having an enlarged integral head, the first guide means having a small bore to accommodate the stem and a larger communicating bore to accommodate the head of the bolt, and the casing means including a plug closing one end of the larger bore, said plug having a bore forming said second guide means with one end open and another end closed so that when a portion of the key is inserted therein said key cannot enter into the larger bore.
Claim 3
Dependent Claim
36 words
The lock recited in claim 1 wherein the key comprises a sleeve means and a bar which slides therein so that the said portions of the key can be extended from either end of the sleeve.
Claim 4
Dependent Claim
35 words
The lock recited in claim 1 wherein the plug and main body of the casing are removably joined together so that a wall of a cabinet and the like can be held firmly between them.
Claim 5
Dependent Claim
83 words
The lock recited in claim 1 wherein the key includes a sleeve means and a bar which slides therein so that the said portions thereof can be extended from either end of the sleeve, means to hold the bar in a plurality of adjusted positions, the casing being divided into a pair of parts so that one part can be placed within a cabinet and the other part can be placed outside of the cabinet, and means for holding the two parts together.
Claim 6
Dependent Claim
52 words
The lock recited in claim 1 wherein the key includes a sleeve means through which an adjustable bar is slidable, an elongated slot in the bar, and a stud extending through the sleeve and into the slot so that the bar can be extended only a limited extent from the sleeve means.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |