Patent US3338078A successfully refreshed from Google Patents.
US3338078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-piece key and extractor
Assignee: Schlage Lock Co LLC
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Filing: 1965-02-18
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Granted: 1967-08-29
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Expires: 1985-02-18
Abstract
No abstract record available.
Inventors
- 👤 Eberitch Ernest
- 👤 Kenneth R Nelson
- 👤 Pope Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:02
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/005; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7729; Y10T70/778; Y10T70/7791; Y10T70/7802; Y10T70/7915; Y10T70/7955; Y10T70/7977; Y10T70/7983
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A LOCK UNIT, A PLUG PROVIDED WITH A KEYWAY THEREIN HAVING A PREDETERMINED CROSS SECTION DEFINED BY A PLURALITY OF LONGITUDINAL RIDGES AND GROOVES, A KEY TIP HAVING A CROSS SECTION COMPLEMENTARY TO SAID PREDETERMINED CROSS SECTION WHEREBY SAID KEY TIP IS CONFINED TO LINGITUDINAL TRANSLATION IN SAID KEYWAY, A CATCH ON AND IN LONGITUDINAL ALIGNMENT WITH ONE END OF SAID KEY TIP WITHIN THE CONFINES OF SAID PREDETERMINED CROSS SECTION, AN EXTRACTOR HAVING A CROSS SECTION COMPLEMENTARY TO SAID PREDETERMINED CROSS SECTION AND DEFINED BY A PLURALITY OF LONGITUDINAL RIDGES AND GROOVES WHEREBY SAID EXTRACTOR IS CONFINED TO LONGITUDINAL TRANSLATION IN SAID KEYWAY, MEANS EFFECTIVE IN ONE POSITION OF SAID KEY TIP IN SAID KEYWAY FOR HOLDING SAID KEY TIP AGAINST LONGITUDINAL TRANSLATION IN
Claim 2
Dependent Claim
126 words
IN A LOCK UNIT, A PLUG PROVIDED WITH A KEYWAY THEREIN HAVING A PREDETERMINED CROSS SECTION DEFINED BY A PLURALITY OF LONGITUDINAL RIDGES AND GROOVES, A KEY TIP HAVING A CROSS SECTION COMPLEMENTARY TO SAID PREDETERMINED CROSS SECTION WHEREBY SAID KEY TIP IS CONFINED TO LINGITUDINAL TRANSLATION IN SAID KEYWAY, A CATCH ON AND IN LONGITUDINAL ALIGNMENT WITH ONE END OF SAID KEY TIP WITHIN THE CONFINES OF SAID PREDETERMINED CROSS SECTION, AN EXTRACTOR HAVING A CROSS SECTION COMPLEMENTARY TO SAID PREDETERMINED CROSS SECTION AND DEFINED BY A PLURALITY OF LONGITUDINAL RIDGES AND GROOVES WHEREBY SAID EXTRACTOR IS CONFINED TO LONGITUDINAL TRANSLATION IN SAID KEYWAY, MEANS EFFECTIVE IN ONE POSITION OF SAID KEY TIP IN SAID KEYWAY FOR HOLDING SAID KEY TIP AGAINST LONGITUDINAL TRANSLATION IN
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |