Patents
US 11649648 B2: Enhanced safety cage apparatus for work areas on top of rolling stock such as rail tank cars
- Granted
- 2023-05-16
- Filed
- 2020-06-23 application 16909367
- Type
- Utility · 10 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A cage for surrounding a section of a work area of the top of rolling stock includes an inboard side, an outboard side, a front end section and a back end section. The inboard side of the cage is attached to an associated deployment apparatus. Each of the two sides can define a pair of fence notches to slide over the rails surrounding the work area. Each of the two end sections can define an inboard notch and a center notch. Some embodiments of the end sections can define an outboard notch that includes a self-adjusting straddle. The cage can be provided as part of a portable fall protection device that includes a telescoping positioning mechanism.
Source: PVGPATDIS, file of 2026-04-10 (ipg230516.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Sam Carbis Asset Management, LLC 24 patents | US company or organization | Florence, SC | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Eric W. Anderson | Florence, SC | 21 | PVGPATDIS, file of 2026-04-10 | |
| Ronald W. Bennett | Florence, SC | 14 | PVGPATDIS, file of 2026-04-10 | |
| James Quinn Sawinski, Jr. | Eatonton, GA | 2 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E04G | Scaffolding; forms; shuttering; building implements or aids, or their use; handling building materials on the site; repairing, breaking-up or other work on existing buildings | E04G5/001 | PVGPATDIS, file of 2026-04-10 |
| E06C | Ladders | E06C1/39 | 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 |
|---|---|---|---|---|---|
| 2020-06-23 | Assignment Assignment of assignor's interest | ANDERSON, ERIC signed 2018-04-30 BENNETT, RONALD W. signed 2018-04-30 SAWINSKI, JAMES QUINN, JR. signed 2018-04-30 | SAM CARBIS ASSET MANAGEMENT, LLC FLORENCE, SC | 53015/326 | 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.