Manhole cover locks, lockable manhole covers, and methods for locking a manhole cover
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 19, 2017
Issued Date -
N/A
app pub date -
Sep 14, 2016
filing date -
Sep 15, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A locking assembly attachable to a manhole cover includes an arm disposable in a lowered position with the arm disposed in a first orientation engageable with a manhole frame supporting the manhole cover to inhibit removal of the manhole cover from a manhole frame, and disposable in a raised position and in a second orientation operable to allow removal of the manhole cover from the manhole frame. In an embodiment, the locking assembly may include the arm attached to a movable member having a spiral, helix, or curved groove and in which the movable arm is receivable in a bushing and a pin receivable in the groove.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- E05C Class
- 374 Applications Filed
- 252 Patents Issued To-Date
- 67.38 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- E05C Class
- 25.96 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 19, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 19, 2029 |
