John Evans' Sons, Incorporated
At a glance
Employees20-99
In business sinceNot reported
HeadquartersLansdale, PA
US patents11
SAM.gov UEIMRZFU3DRFSK3
CAGE code85850
Incorporated inDE
Brands
This company sells these brands.
- constant force springs
- spiral torsion springs
- helical shock
- vibration isolators
- power springs
- pusher variable force springs
- motor brush springs
- helical springs
- wire forms
- stampings/flat springs
- precision-engineered springs
- mechanical assemblies
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
11 US patents granted 2005–2024, 2 of them in the five years to SEP 2025.
Civil engineering 10Mechanical elements 1
- Window counterbalance brake shoe and spring assembly with improved brake strengthUS 11,859,424 · granted JAN 2, 2024
- Mounting system for mounting a coil spring to a window frame in a sash counterbalance systemUS 10,941,599 · granted MAR 9, 2021
- Counterbalance system for tilt-in window having a shielded brake shoe structureUS 10,415,287 · granted SEP 17, 2019
- Ribbon coil spring anchor mount system for use in a window counterbalance assemblyUS 10,174,537 · granted JAN 8, 2019
- Versatile and economic anchor mount for a coil spring in a window counterbalance assemblyUS 10,081,972 · granted SEP 25, 2018
Newest 5 shown · Granted to John Evans' Sons, Incorporated · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| John Evans' Sons, Incorporated | Lansdale | PA | 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.