Our Company


KEMPF Inc. was founded in California in the summer of 2007 with the purpose of adapting automobiles for drivers with a different mobility in the USA.

We were asked very early on, to adapt a training vehicle at the James Haley Veterans Administration Medical Center in Tampa, FL, so we opened an installation facility in Tampa Florida, in February 2008. We moved to a larger facility in May 2019 :
5532 56th Commerce Park Blvd
Tampa, FL 33610
Phone : (813) 630-0409
Fax : (813) 630-0410

All Kempf adaptations are performed by Kempf technicians. Kempf features free transport nationwide on some adaptations and offers a lifetime warranty on all products.

Our headquarter is in Silicon Valley:

1040 Indian Wells Ave. #418
Sunnyvale, CA 94085
Toll Free : 1 (888) 4-KEMPF-US
or 1 (888) 453-6738
Phone : (408) 773-0219



    Our work

video: how we design

  Martine Kempf 

who is she?


Our History

At the beginning . . . the perseverance of one man

Jean-Pierre Kempf (1931 - 2002) in 1954

At 23, studying physics and chemistry in Strasbourg, France, Jean-Pierre Kempf decided he wanted to drive a car just using his hands. It was 1954 and the only transportation he had had since he lost the use of his legs due to polio at the age of two, was a tricycle.
He always had to leave it outside, in front of the school and now of the university. 

He was then carried by his classmates from classroom to classroom. 

He had passed the entrance exam for the National School of Chemistry but was denied access because of his disability. He was however still determined to become a research scientist.

Jean-Pierre Kempf at work with P-B Kempf

Jean-Pierre Kempf 1980

Jean-Pierre Kempf in 1988

Jean-Pierre Kempf 1988

Jean-Pierre Kempf in 2001

Jean-Pierre Kempf 2001

Mechanics was his passion, so in his spare time he assembled a car out of various parts and adapted it to be able to drive it himself.
He installed a ring on top of the
steering wheel to accelerate, a lever left as a hand clutch and a lever right as a hand brake. “I realized that once I was behind the wheel, I was like anybody else!” he said, so he decided to share his experience:

He sent a letter to a car magazine explaining how he was driving. The publication of this letter
brought him such a large demand from paraplegics and amputees who wanted to drive, that he started his own company to adapt cars for them. He filed his patent for the accelerator ring in 1955.

letter of J.P. Kempf published in a car magazine in 1954

Letter published in 1954

Jean-Pierre Kempf at work in 1987 with Martine Kempf

Jean-Pierre Kempf 1997

article from 1954 - invention of the accelerator ring by J.P. Kempf

article in 1954

At the very beginning most of his customers were in Paris, because the only rehabilitation center in France was in Paris, so he would make all the parts in his shop in Strasbourg and every week he would drive 8 hours (300 miles) to Paris where one of his customers had given him access to a workshop.
He would park his car next to the customer’s car and because he still didn’t own a wheelchair, he would crawl to the customer’s car with his parts and his toolbox.

He would do the installation and if it took more than a day he would sleep in his sleeping bag and eat food he had brought with him because he couldn’t go to a hotel or a restaurant. 

When his work was completed and his customer was happy, he would drive 8 hours back to Strasbourg.

For him the “thank you” from his customer was more important than the money he received.

It took him over a year before he could buy a wheelchair. It was an Everest & Jennings folding wheelchair which totally changed his life.
He was finally really independent.

His company became the leading driving aids manufacturer in France with installation sites and agents in most large cities in France and in several European countries. The
accelerator ring and main hand brake became the standard hand controls in France and they still are today.

  learn more   

He designed many innovative driving solutions through his 48 year career until 2002, like manual clutch, automatic clutch, control of secondary functions on the steering wheel, foot shifting, foot steering, joystick steering accelerator and brake, voice control for secondary functions, sliding door and wheelchair loading arm, turning seats, left foot accelerator, etc.. constantly improving the solutions as new technologies became available.
Jean-Pierre used to say: “A person with a disability should be able to drive the vehicle of his or her choice, like anybody else”. He therefore accepted to adapt pretty much any vehicle, from the small Fiat to the Rolls Royce. His company adapted over 100 000 vehicles in his lifetime.

“We are not building prosthesis to the cars”, he used to say. “We are adapting the cars with the best technology available and making sure they look as nice as the manufacturers designed them. Kempf adaptations should look like factory made.”

Jean-Pierre travelled extensively throughout Europe, driving an average of 60 000 miles per year. He wanted his adaptations to be safe, comfortable, elegant and very reliable.
If he learned that one of his customers had a problem, he would not hesitate to take his car even if it was several hundred miles away, and go there to fix the problem himself.

He was involved in the design of his adaptations literally until the end of his life. It was late at night on April 10, 2002, he was testing a new mold for the plastic cover of the accelerator ring when he passed away succumbing to an aneurism.

His wife and his three children made sure his legacy lived on. His daughter, Martine who lives in Silicon Valley, California manages the company KEMPF SAS in France.
In 2007 she started KEMPF Inc. in Sunnyvale, CA and Tampa, FL.


Martine Kempf

who is she?

Martine Kempf, founder of KEMPF Inc., received the Manus Award for the Darios 211 in 2019.

Martine KEMPF is the CEO of KEMPF Inc. in the US and of KEMPF SAS in Europe.

In 1985 as an astronomy student she invented the Katalavox, a speech recognition control system used to control secondary functions in cars for drivers without the use of their arms.

She taught herself electronics in her spare time with books and magazines and designed a very fast and reliable speech recognition system way ahead of its time.

Her invention was used in cars for disabled drivers, in power wheelchairs for quadriplegics and in surgical microspcopes used by surgeons in operating rooms.

Martine Kempf with her Dad and her inventions

with her dad 1984

Martine Kempf in Japan 1984 showing voice conrolled car

Martine in Japan 1984

Street dedication of Rue Martine Kempf

Street dedication 1987

In 1985 she wanted to start her own company in France but the socialist government had nationalized the banks and the government promised her a loan that never materialized, so she left France and came to Silicon Valley to start her business.

In five minutes with five Dollars she started her company in Sunnyvale, CA. Her company thrived adapting surgical microscopes for many hospitals like Mayo Clinic, UCLA, Stanford, Manhattan Eye and Ear and many others.

Martine Kempf in her lab in SUnnyvale, CA in 1986

in Sunnyvale, CA lab 1986

Martine Kempf with J. Peak VA secretary in 2008

with VA secretary 2008

Martine Kempf in China in 2013

Martine in Silicon Valley

She also adapted the surgical microscopes of world famous Prof. Svatislav Fyodorov in Moscow, Russia in 1985.
Her company KEMPF was named "Small Business of the Year" by the City of Sunnyvale and the County of Santa Clara in 1990.
She received many awards for her work and many articles and book chapters were published about her.

Article in People Magazine in 1986:

In 1987 her hometown in France, Dossenheim-Kochersberg, named a street after her: "Rue Martine Kempf".
Present at the dedication was the President of the European Parliament, Pierre Pflimlin. She was just 28. 
Her immigration to the US was facilitated by President Reagan whom she had given a voice activated toy train for his 73rd birthday in 1984. 

  learn more   

In the mid-1990 her company in California designed and built many electronic circuits for her father's company in France who was adapting car for drivers with disabilities.

She became his biggest supplier, so when he passed away in 2002, she decided to restart his company in France and became the CEO of KEMPF SAS. 
This company adapts vehicles for France and countries of the European Union for drivers wth disabilities.

In 2007 she started KEMPF Inc. in the US to adapt cars for American Veterans and other drivers with different mobility and opened an installation site in Tampa, Florida in February 2008.

She hopes to revolutionize the market of hand controls in the US offering digital solutions which respect the safety and comfort of modern automobiles.




    adapted cars

list of already


request one

  contact us 

like to hear from you

All Kempf products are designed, manufactured and installed by Kempf and have a lifetime warranty.

  Free transport

roundtrip nationwide

  Lifetime warranty

on all Kempf products

  VA accepted

by dept. of veterans affairs