Patent US3368375A successfully refreshed from Google Patents.
US3368375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable core with indicator pin
Assignee: Individual
•
Filing: 1966-10-21
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Granted: 1968-02-13
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Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Fred J Russell
- 👤 Cirocco Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:23
CPC Classifications
E; E05; E05B; E05B41/00; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5496; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5792; Y10T70/5796
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN A DOOR HAVING A TUBULAR LATCH BOLT OPERATING SPINDLE ROTATABLY MOUNTED THEREIN AND A KEY-ACTUATED CORE HAVING A CYLINDER PLUG ROTATABLY MOUNTED IN SAID CORE, THE COMBINATION OF A TAILPIECE HAVING AN AXIALLY SLIDABLE MOUNTING IN SAID CORE AND MOVABLE BETWEEN A RETRACTED POSITION AND AN EXTENDED POSITION, SAID TAILPIECE HAVING ONE PORTION ROTATABLE RELATIVE TO SAID SPINDLE AND ANOTHER PORTION ENGAGEABLE WITH SAID SPINDLE, SAID TAILPIECE BEING MOVABLE AXIALLY BETWEEN ONE POSITION WHEREIN SAID ONE PORTION IS IN POSITION ROTATABLE RELATIVE TO SAID SPINDLE AND ANOTHER POSITION WHEREIN SIAD OTHER PORTION IS IN A POSITION OF NONROTATABLE ENGAGEMENT WITH SAID SPINDLE AND INDICATOR PIN HAVING AN AXIALLY SLIDABLE MOUNTING IN SAID CORE AND IN ENGAGEMENT WITH SAID TAILPIECE, SAID PIN BEING MOVABLE BETWEEN EXTENDED AND RETRACTED LOCATIONS, ONE OF SAID LOCATIONS BEING INDICATIVE ROTATABLE DISENGAGEMENT OF SAID ONE PORTION WITH SAID CORE AND THE OTHER OF SAID LOCATIONS BEING INDICATIVE OF NONROTATABLE ENGAGEMENT OF SAID OTHER PORTION WITH SAID CORE, AND MEANS ENGAGEABLE WITH SAID TAILPIECE, FOR MOVING SAID TAILPIECE AND SAID PIN BETWEEN A LOCKING POSITION AND AN UNLOCKED POSITION RELATIVE TO SAID SPINDLE.
Claim 2
Dependent Claim
187 words
IN A DOOR HAVING A TUBULAR LATCH BOLT OPERATING SPINDLE ROTATABLY MOUNTED THEREIN AND A KEY-ACTUATED CORE HAVING A CYLINDER PLUG ROTATABLY MOUNTED IN SAID CORE, THE COMBINATION OF A TAILPIECE HAVING AN AXIALLY SLIDABLE MOUNTING IN SAID CORE AND MOVABLE BETWEEN A RETRACTED POSITION AND AN EXTENDED POSITION, SAID TAILPIECE HAVING ONE PORTION ROTATABLE RELATIVE TO SAID SPINDLE AND ANOTHER PORTION ENGAGEABLE WITH SAID SPINDLE, SAID TAILPIECE BEING MOVABLE AXIALLY BETWEEN ONE POSITION WHEREIN SAID ONE PORTION IS IN POSITION ROTATABLE RELATIVE TO SAID SPINDLE AND ANOTHER POSITION WHEREIN SIAD OTHER PORTION IS IN A POSITION OF NONROTATABLE ENGAGEMENT WITH SAID SPINDLE AND INDICATOR PIN HAVING AN AXIALLY SLIDABLE MOUNTING IN SAID CORE AND IN ENGAGEMENT WITH SAID TAILPIECE, SAID PIN BEING MOVABLE BETWEEN EXTENDED AND RETRACTED LOCATIONS, ONE OF SAID LOCATIONS BEING INDICATIVE ROTATABLE DISENGAGEMENT OF SAID ONE PORTION WITH SAID CORE AND THE OTHER OF SAID LOCATIONS BEING INDICATIVE OF NONROTATABLE ENGAGEMENT OF SAID OTHER PORTION WITH SAID CORE, AND MEANS ENGAGEABLE WITH SAID TAILPIECE, FOR MOVING SAID TAILPIECE AND SAID PIN BETWEEN A LOCKING POSITION AND AN UNLOCKED POSITION RELATIVE TO SAID SPINDLE.
References Cited (Backward Citations)
US3125876A
Cited
US2948140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |