US3199937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device
Assignee: Robertshaw Controls Co
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Filing: 1963-09-16
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Granted: 1965-08-10
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 John E Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:02
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/46; E05B65/462; E05B65/463; E05B65/464
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A DRAWER INTERLOCK DEVICE INCLUDING A CABINET STRUCTURE HAVING A SUPPORTING FRAME FOR A PLURALITY OF DRAWERS AND SUCH DEVICE FOR PREVENTING THE OPENING OF MORE THAN ONE DRAWER AT A TIME TO PREVENT TIPPING OF THE CABINET STRUCTURE COMPRISING: A ROD POSITIONED BETWEEN FIRST AND SECOND OF SAID PLURALITY OF DRAWERS, A SUPPORT MOUNTED ON SAID FRAME AND SLIDABLY RECEIVING SAID ROD, SAID FIRST DRAWER HAVING AN OPENING THEREIN FOR RECEIVING AN END PORTION OF SAID ROD, A CAM SURFACE FORMED ADJACENT SAID FIRST DRAWER OPENING, A RETURN SPRING MOUNTED ON SAID FIRST DRAWER AND POSITIONED OPPOSITE THE END PORTION OF SAID ROD FOR FORCING THE ROD BACK TO ITS ORIGINAL POSITION AS SAID SECOND DRAWER IS SLIDABLY RETURNED WITHIN THE CABINET, A CAM SURFACE FORMED WITHIN SAID SECOND DRAWER OPENING, A SECOND RETURN SPRING MOUNTED ON SAID SECOND DRAWER, FOR BIASING THE OTHER END PORTION OF SAID ROD, WHEREBY OPENING EITHER FIRST OR SECOND DRAWER WILL LOCK THE OTHER DRAWER.
Claim 2
Dependent Claim
162 words
A DRAWER INTERLOCK DEVICE INCLUDING A CABINET STRUCTURE HAVING A SUPPORTING FRAME FOR A PLURALITY OF DRAWERS AND SUCH DEVICE FOR PREVENTING THE OPENING OF MORE THAN ONE DRAWER AT A TIME TO PREVENT TIPPING OF THE CABINET STRUCTURE COMPRISING: A ROD POSITIONED BETWEEN FIRST AND SECOND OF SAID PLURALITY OF DRAWERS, A SUPPORT MOUNTED ON SAID FRAME AND SLIDABLY RECEIVING SAID ROD, SAID FIRST DRAWER HAVING AN OPENING THEREIN FOR RECEIVING AN END PORTION OF SAID ROD, A CAM SURFACE FORMED ADJACENT SAID FIRST DRAWER OPENING, A RETURN SPRING MOUNTED ON SAID FIRST DRAWER AND POSITIONED OPPOSITE THE END PORTION OF SAID ROD FOR FORCING THE ROD BACK TO ITS ORIGINAL POSITION AS SAID SECOND DRAWER IS SLIDABLY RETURNED WITHIN THE CABINET, A CAM SURFACE FORMED WITHIN SAID SECOND DRAWER OPENING, A SECOND RETURN SPRING MOUNTED ON SAID SECOND DRAWER, FOR BIASING THE OTHER END PORTION OF SAID ROD, WHEREBY OPENING EITHER FIRST OR SECOND DRAWER WILL LOCK THE OTHER DRAWER.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |