Double bitted-reversible key plug lock
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 14, 2022
Grant Date -
Dec 19, 2019
app pub date -
Jun 12, 2019
filing date -
Jun 15, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
A lock has a locked condition and an unlocked condition comprising a barrel with a circular bore having three splines. A cylindrical plug is adapted to reside in the bore. First, second and retaining tumblers are positioned in tumbler slots, with the first and retaining tumblers biased in one direction toward the first spline and the second tumbler biased in the opposite direction into the second spline. When a first key is inserted, the first and second tumblers are moved against the bias so they retract from the respective splines and the plug can be rotated from the locked and unlocked conditions. When a second key is inserted while in the unlocked condition, the first, second and retaining tumblers are moved so the respective tumblers are either positioned in the third longitudinal spline or fully retained in the plug and the plug can be retracted axially from the barrel.
First Claim
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Family
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International Classification(s)
- 2019 Application Filing Year
- E05B Class
- 1193 Applications Filed
- 809 Patents Issued To-Date
- 67.82 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- E05B Class
- 72.14 % this patent is cited more than
- 3 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 14, 2025 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 14, 2029 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 14, 2033 |