Patents
US 7905679 B2: Dual lifting manhole cover
- Granted
- 2011-03-15
- Filed
- 2007-11-12 application 11938444
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A one-piece, unitary manhole cover has dual lifting ports that drain through the outer circumferential edge of the cover. A lifting channel runs from the interior of the upper face out to the outer circumferential edge. A lifting bar spans the lifting channel and defines an ergo lifting port and a pry bar lifting port. Both the ergo lifting port and the pry bar lifting port drain through the outer circumference of the manhole cover.
Source: PVGPATDIS, file of 2026-04-10 (ipg110315.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| East Jordan Iron Works, Inc. 5 patents | US company or organization | East Jordan, MI | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Kevin S. Vrondran | East Jordan, MI | 7 | PVGPATDIS, file of 2026-04-10 | |
| Jeremy I. Johnson | East Jordan, MI | 17 | PVGPATDIS, file of 2026-04-10 | |
| Andrew J. Malpass | East Jordan, MI | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E02D | Foundations; excavations; embankments ; underground or underwater structures | E02D29/1445 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T137/7021 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2017-07-20 | Security interest Security interest Security interest | EAST JORDAN FOUNDRY, LLC signed 2017-07-19 EJ AMERICAS, LLC signed 2017-07-19 EJ ARDMORE, INC. signed 2017-07-19 EJ ASIA-PACIFIC, INC. signed 2017-07-19 EJ EUROPE, LLC signed 2017-07-19 EJ FRANCE FINANCE, LLC signed 2017-07-19 EJ GROUP DISC, INC. signed 2017-07-19 EJ GROUP, INC. signed 2017-07-19 EJ USA, INC. signed 2017-07-19 GMI COMPOSITES, INC. signed 2017-07-19 | JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT BLOOMFIELD HILLS, MI | 43053/459 | ECORSEXC, file of 2026-09-25 |
| 2007-11-12 | Assignment Assignment of assignor's interest | JOHNSON, JEREMY I. signed 2007-10-29 MALPASS, ANDREW J. signed 2007-10-29 VRONDRAN, KEVIN S. signed 2007-10-29 | EAST JORDAN IRON WORKS, INC. EAST JORDAN, MI | 20096/292 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
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.