W S Darley & CO
At a glance
Employees20-99
In business sinceNot reported
Industry
HeadquartersChippewa Falls, WI
US patents17
SAM.gov UEIDKE2A7LZ35V7
CAGE code5B337
Incorporated inWI
Brands
Firefighting Equipment
Darley Pumps
Unmanned Systems
Vr ArThis company sells these brands.
- pumps
- tactical pumpers
- uncrewed aerial systems
- uncrewed ground vehicles
- VR/AR
- drone training
- first responders
- defense
- Air Force
- Marine Corps
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of GoodsSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Patents
17 US patents granted 2003–2024, 8 of them in the five years to SEP 2025, including 5 design patents.
Engines, pumps, turbines 9Environmental technology 2Mechanical elements 1
- Centrifugal pumps and casings thereforeUS 12,135,038 · granted NOV 5, 2024
- Centrifugal pumps, casings and vehicles using the sameUS 12,117,017 · granted OCT 15, 2024
- Pump casingUS D1026959 · granted MAY 14, 2024
- Integrated drive box and heat exchanger and systemsUS 11,873,841 · granted JAN 16, 2024
- Centrifugal pumps, casings and vehicles using the sameUS 11,873,837 · granted JAN 16, 2024
Newest 5 shown · Granted to W.S. Darley & Co. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| W S Darley & CO | Chippewa Falls | WI | 20–99 | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.