Patent US3705508A successfully refreshed from Google Patents.
US3705508A
Expired / Lapsed
US
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Locks
Assignee: Pebra GmbH
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Filing: 1970-03-09
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Granted: 1972-12-12
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Expires: 1990-03-09
Abstract
Abstract A lock comprising a cylinder having a bore, a plug rotatably received in the bore, the bore being of such configuration as to prevent lock freezing.
Inventors
- 👤 Walter Fritsch
- 👤 Erick Hetziner
- 👤 Karl Worner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:02
CPC Classifications
E; E05; E05B; E05B77/00; E05B77/34; E05B17/00; E05B17/002; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7667; Y10T70/7672; Y10T70/7684; Y10T70/80; Y10T70/8432; Y10T70/8649
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
128 words
A lock comprising a cylinder having a main bore, a plug rotatably mounted in the main bore, packing ring means to minimize entrance of humidity and dust between the cylinder and the plug and to assist in the rotatable mounting of the plug; the cylinder having at least one longitudinal row of radial bores, each extending into the main bore; tumbler pins in the radial bores; the cylinder having contact with the plug in mutually facing areas, along the row of radial bores, whereas the cylinder has, remotely from said row, at least one circumferential segment, occupying a major area of the main bore, radially recessed so that the plug is not contacted by the cylinder, in said segment, thereby counteracting freezing of the plug to the cylinder.
Claim 2
Dependent Claim
128 words
A lock comprising a cylinder having a main bore, a plug rotatably mounted in the main bore, packing ring means to minimize entrance of humidity and dust between the cylinder and the plug and to assist in the rotatable mounting of the plug; the cylinder having at least one longitudinal row of radial bores, each extending into the main bore; tumbler pins in the radial bores; the cylinder having contact with the plug in mutually facing areas, along the row of radial bores, whereas the cylinder has, remotely from said row, at least one circumferential segment, occupying a major area of the main bore, radially recessed so that the plug is not contacted by the cylinder, in said segment, thereby counteracting freezing of the plug to the cylinder.
Claim 3
Dependent Claim
20 words
A lock according to claim 1, also having a slot in the outside of the cylinder interconnecting the radial bores.
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |