
Trinity Engineering was founded in 1980 by Bruce Omholt. In 1964 he received his BSME while living in San Francisco. Omholt gained considerable design and manufacturing experience during the next sixteen years while working for Repco Engineering, Inc., Ford Motor Company, EF Hauserman Company, and the American Seating Company. Omholt wanted to bring together people with multiple skills- people who were not just cutters or welders, but who were capable of seeing projects as a whole. Thus, Trinity Engineering was started in Grand Rapids, Michigan, in 1980, and moved to Rohnert Park, California, in 1981.
Omholt was the president and CEO of Trinity Engineering until 1988. After retirement, he continued his passion for invention by researching and developing specialized scuba diving equipment. Over the last eighteen years Trinity has continued to operate with the same dedication and spirit that Omholt began many years ago.
Trinity Engineering Continues to Evolve
The team at Trinity is capable of building anything that can be imagined. We are a single source of design, engineering, and fabrication that is experienced with a cross section of materials and manufacturing processes. The products have changed through the years, but our commitment to excellence is timeless. .

Prints Plus

Swatch
(1900's)

Ben & Jerry's
Early Years
In the early years Trinity heavily committed to working with storefront designs and kiosks. Additionally, Trinity manufactured large runs of displays and showcases for mall chain stores.

Clinique

Shiseido
(1900's)
Internationally Known
From there, Trinity Engineering became known for high end store fixtures for a wide range of cosmetic companies. Examples of this work can be seen coast to coast as well as internationally.

Cellar 360

Vineyard 29

Huntington Library

La Crema
Last Decade
Over the last decade we have expanded our expertise into the booming wine industry, restaurants, hospitality industry, office spaces, and luxury residences in the wine country and San Francisco Bay Area.
North Bay's Top 500 Businesses
Throughout our tenure in Sonoma County, Trinity Engineering has been regularly recognized among the North Bay’s Top 500 businesses.
Our Commitment To Sustainability
As a manufacturing company, Trinity Engineering is committed to minimizing its environmental footprint. We currently recycle 90% of our production waste stream including wood, plastics and metal.
Here are a few things we have done:
- Converted our entire facility to energy efficient lighting, saving an estimated 40,000 kilowatt hours annually
- Utilized water based, low VOC finishes which are proven to out-perform all national and regional VOC requirements and are registered for LEED credits
