Patents
US 12742300 B2: Manhole lock system
- Granted
- 2026-09-22
- Filed
- 2022-12-07 application 18076753
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A manhole lock system includes a frame positioned over an access opening, a cover movable between a closed position in which the cover extends over the access opening, and an open position in which the access opening is exposed; and a lock mechanism for locking the cover in the closed position. The lock mechanism includes a lock member that is movable along a path between a unlocked position and a locked position, wherein in the locked position the lock member prevents the cover from moving to the open position, wherein in the unlocked position the lock member is retracted to enable movement of the cover to the open position.
Source: PTBLXML, file of 2026-09-22 (ipgb20260922.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| EJ USA, Inc. 9 patents | US company or organization | East Jordan, MI | PTBLXML, file of 2026-09-22 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| James R. Allen | Bellaire, MI | PTBLXML, file of 2026-09-22 | ||
| Collin S. Farmer | East Jordan, MI | PTBLXML, file of 2026-09-22 | ||
| Kyle Thomas Peters | Charlevoix, MI | 2 | PTBLXML, file of 2026-09-22 | |
| Scott B. Beal | East Jordan, MI | 3 | PTBLXML, file of 2026-09-22 | |
| Jeremy I. Johnson | East Jordan, MI | 17 | PTBLXML, file of 2026-09-22 | |
| Kevin J. Wright | Boyne City, MI | 3 | PTBLXML, file of 2026-09-22 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E02D | Foundations; excavations; embankments ; underground or underwater structures | E02D29/1427 | PTBLXML, file of 2026-09-22 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.