Patents
US 12304538 B2: Railway safety notification system and device with proportional warnings
- Granted
- 2025-05-20
- Filed
- 2020-10-22 application 17077899
- Type
- Utility · 5 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Systems and devices that will notify train system maintenance workers of an approaching vehicle and, conversely, will notify the operators and administrators of train systems of train system maintenance workers within the vicinity of an approaching section of track. Embodiments of the safety systems and methods disclosed herein may use proportional warnings based on the speed or proximity of approaching vehicles as well as the specific location of such approaching vehicles relative to worker positions to help avoid worker warning fatigue.
Source: PVGPATDIS, file of 2026-04-10 (ipg250520.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| STC, Inc. 34 patents | US company or organization | McLeansboro, IL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Brad Cross | McLeansboro, IL | 32 | PVGPATDIS, file of 2026-04-10 | |
| Destry Diefenbach | Benton, IL | 6 | PVGPATDIS, file of 2026-04-10 | |
| Pete Ksycki | McLeansboro, IL | 6 | PVGPATDIS, file of 2026-04-10 | |
| Nicholas Freed | Thompsonville, IL | 10 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B61L | Guiding railway traffic; ensuring the safety of railway traffic | B61L23/06 | PVGPATDIS, file of 2026-04-10 |
| G08G | Traffic control systems | G08G9/00 | 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 |
|---|---|---|---|---|---|
| 2021-06-25 | Assignment Assignment of assignor's interest | CROSS, BRAD signed 2021-06-03 DIEFENBACH, DESTRY signed 2021-06-03 FREED, NICHOLAS signed 2021-06-03 KSYCKI, PETE signed 2021-06-03 | STC, INC. MCLEANSBORO, IL | 56665/921 | 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.