Patent US3426386A successfully refreshed from Google Patents.
US3426386A
Expired / Lapsed
US
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Locking device for pivoted members
Assignee: Individual
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Filing: 1967-01-05
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Granted: 1969-02-11
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Expires: 1987-01-05
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:52
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/22; B60N2/2227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A LOCKING DEVICE FOR PIVOTED MEMBERS, A FIXED CYLINDRICAL HOUSING, A HELICAL SPRING DISPOSED WITHIN SAID HOUSING AND NORMALLY ENGAGING THE INNER SURFACE THEREOF, THE ENDS OF SAID SPRING HAVING FIRST AND SECOND INWARDLY EXTENDING TABS, AN ADJUSTABLE PLATE ROTATABLY MOUNTED WITHIN SAID HOUSING, A LOCKING TAB ON SAID ADJUSTABLE PLATE FACING THE FIRST TAB ON SAID SPRING, AND ENGAGEABLE THEREWITH UPON ROTATION OF SAID ADJUSTABLE PLATE IN ONE DIRECTION IN SUCH MANNER AS TO EXPAND SAID SPRING AGAINST SAID HOUSING, THEREBY LOCKING THE ADJUSTABLE PLATE AGAINST FURTHER ROTATION, AND A SPRING RELEASING PLATE ROTATABLY MOUNTED WITHIN SAID HOUSING AND HAVING ENDS FACING SAID SPRING TABS IN SUCH MANNER THAT A ROTATION OF SAID SPRING RELEASING PLATE IN EITHER DIRECTION WILL WITHDRAW SAID SPRING FROM FRICTIONAL LOCKING ENGAGEMENT WITH SAID HOUSING, THEREBY PERMITTING SAID ADJUSTABLE PLATE TO BE ROTATED.
Claim 2
Dependent Claim
140 words
IN A LOCKING DEVICE FOR PIVOTED MEMBERS, A FIXED CYLINDRICAL HOUSING, A HELICAL SPRING DISPOSED WITHIN SAID HOUSING AND NORMALLY ENGAGING THE INNER SURFACE THEREOF, THE ENDS OF SAID SPRING HAVING FIRST AND SECOND INWARDLY EXTENDING TABS, AN ADJUSTABLE PLATE ROTATABLY MOUNTED WITHIN SAID HOUSING, A LOCKING TAB ON SAID ADJUSTABLE PLATE FACING THE FIRST TAB ON SAID SPRING, AND ENGAGEABLE THEREWITH UPON ROTATION OF SAID ADJUSTABLE PLATE IN ONE DIRECTION IN SUCH MANNER AS TO EXPAND SAID SPRING AGAINST SAID HOUSING, THEREBY LOCKING THE ADJUSTABLE PLATE AGAINST FURTHER ROTATION, AND A SPRING RELEASING PLATE ROTATABLY MOUNTED WITHIN SAID HOUSING AND HAVING ENDS FACING SAID SPRING TABS IN SUCH MANNER THAT A ROTATION OF SAID SPRING RELEASING PLATE IN EITHER DIRECTION WILL WITHDRAW SAID SPRING FROM FRICTIONAL LOCKING ENGAGEMENT WITH SAID HOUSING, THEREBY PERMITTING SAID ADJUSTABLE PLATE TO BE ROTATED.
References Cited (Backward Citations)
US3216766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |