US3722240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder lock
Assignee: Assa Abloy High Security Group Inc
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Filing: 1971-01-25
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Granted: 1973-03-27
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Expires: 1991-01-25
Abstract
Abstract A cylinder lock having tumblers movable within a key plug in response to the insertion of a bitted key whereby the tumblers both translate and rotate to present discretely located operating elements, or cavities, to cooperating elements, or projections, carried by a fence normally retaining the key plug from rotation in its cylinder shell to release the fence and permit the plug to be rotated; i.e., the projections of the fence normally bearing against the surfaces of the tumblers out of registration with the aforesaid discretely located elements until matching cavities are engaged to bring about release of the fence.
Inventors
- 👤 R N Oliver
- 👤 R C Spain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:24
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/0039; E05B27/0082; E05B27/0053; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7605; Y10T70/761; Y10T70/7667; Y10T70/7689; Y10T70/7701; Y10T70/7915; Y10T70/7932
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
A cylinder lock having a cylindrical shell, a key plug rotatably operable in said shell to form a shear line therewith, a spring urged fence normally extending into said shell across said shear line from said plug to prevent its rotation, a plurality of tumblers in said plug, said tumblers being translatable and rotatable under control of a key having its bits formed therein at different levels and angles, at least one of said tumblers having a hole in its lateral surface at a preselected location, and a projection on said fence extendable into said hole to release said fence to permit said plug to be rotated in said shell when said key translates and rotates said tumbler to present said hole to said projection.
Claim 2
Dependent Claim
125 words
A cylinder lock having a cylindrical shell, a key plug rotatably operable in said shell to form a shear line therewith, a spring urged fence normally extending into said shell across said shear line from said plug to prevent its rotation, a plurality of tumblers in said plug, said tumblers being translatable and rotatable under control of a key having its bits formed therein at different levels and angles, at least one of said tumblers having a hole in its lateral surface at a preselected location, and a projection on said fence extendable into said hole to release said fence to permit said plug to be rotated in said shell when said key translates and rotates said tumbler to present said hole to said projection.
Claim 3
Dependent Claim
42 words
The invention of claim 1 wherein an additional hole is provided in said tumbler''s lateral surface at another preselected location at the same translation level but at a different angle of rotation of said tumbler for releasing said fence by said key.
Claim 4
Dependent Claim
42 words
The invention of claim 1 wherein an additional hole is provided in said tumbler''s lateral surface at another preselected location at the same angle of rotation but at a different translation level of said tumbler for releasing said fence by said key.
References Cited (Backward Citations)
US3499302A
Cited
US3499303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |