The People and Story Behind
Water Safety Products

GUARDIAN is a collaboration between Bluefox AG, Zurich, Switzerland and Busch, Ltd of El Dorado Hills, CA, USA.

Each company has served the aquatics industry for over five decades, respectively. Each company is known for its trustworthiness, its impeccable product quality and its commitment to serving its customers and employees with integrity and respect.

Two of the most experienced and respected individuals in the fields of aquatics and underwater engineering, David Busch & Heinz Ruchti, have combined their efforts to bring the Guardian-Lifeline Drowning Detection Systems to North America.

David Busch, founder of Busch Ltd, has been in the family entertainment business since 1972 and has built and operated 22 waterparks.

Heinz Ruchti is a pioneer in the field of underwater sonar for the diving industry and developed and patented the sound-wave technology that makes possible the Guardian-Lifeline Products.

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David BuschOwner & Founder

"Having been responsible for the safety of over 55 million guests at our waterparks, I have been searching for a drowning prevention tool like the BLUEFOX-Lifeline for nearly 40 years. Finally, technology and water safety have come together to save lives from drowning and near-drowning incidents..."

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Mark WagnerCFO

"I’ve been in the hospitality world throughout my career, which means always putting others interests above my own. With the BLUEFOX-Lifeline I am part of a team that is serving others while meeting a vital need, the reduction of child drownings..."

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Lynda DraperMarketing Director

"I have always been passionate about water safety since my lifeguarding days as a teen at the community pool. I was on track to be an Olympic competitor, but life happens, and I went for a more traditional career in advertising and marketing..."

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Dusty ByersOperations Director

"As a combat soldier in Afghanistan, I learned to value life even more dearly than I had previously. With the BLUEFOX-Lifeline, our mission of helping save others from the devastation of child drownings or near-drownings fits perfectly with my values and purpose."

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Heinz Ruchti

Founder & President
Deep Blue AG

  • Career milestones:
    • Working as professional scuba diving engineer for over 30 years.
    • Co-developer of the world’s first serial produced diving computer.
    • Co-owner, president and CEO of a world brand Swiss diving instruments manufacturing company:
      • Produced 100’000’s of scuba diving instruments for professional, military and sport divers all over the world.
    • Inventor of Anchor Alert, a ship anchor monitoring system.
    • Licensed Helicopter Pilot.
    • Independent Representative in Switzerland, Austria and Croatia of BELL HELICOPTER TEXTRON USA for 20 years.
    • Inventor of BlueFox Anti-drowning Systems.
    • Owner and president of Deep Blue AG, Switzerland, manufacturer of Anti-drowning Systems
  • Patent Holder:
    • Automobile: Tire Pressure Measuring System
    • Helicopter: Warning system for commercial pilots
    • Ship and Yachting: Anchor Monitoring System
    • Pool Safety: Anti-Drowning Systems
    • Swimmer Safety: Personal Drowning Alarm

Nationality: Swiss

Education: Precision Engineer

Married for 35 years, one daughter (Master of Arts in International Affairs)

Life Quote:

Some people see things as they are and say why…
…I dream things that never were and ask why not.

George Bernard Shaw


The BLUEFOX-Lifeline and Guardian-Lifeline water safety products will not take the place of effective supervision, lifejackets and safety measures recommended or mandated by local regulations.

Inventory is limited so kindly order today.

Family Entertainment Venues Owned or Managed by Principals of Busch, Ltd.

Venue Location Date
Worlds of Fun Kansas City, MO 1972-77; 1981-86
Kansas City Kings Professional Basketball Kansas City, MO 1977-81
Oceans of Fun Kansas City, MO 1982-86
Waterworld USA Sacramento, CA 1986-95
Waterworld USA Phoenix, AZ 1988-91
Big Surf Tempe, AZ 1989-91
Paradise Island Sacramento, CA 1993-95
Waterworld USA Concord, CA 1994-95
Hawaiian Waters Oahu, HI 1998-2001
Hawaiian Falls Garland, TX 2003-2015
Hawaiian Falls The Colony, TX 2004-2015
Bahama Beach Dallas, TX 2005-2008
Aloha Adventure Park Lewisville, TX 2006-2008
Hawaiian Falls Mansfield, TX 2009-2015
Hawaiian Falls Roanoke, TX 2011-2015
Hawaiian Falls Waco, TX 2012-2015
Hawaiian Falls Pflugerville, TX 2014-2015
Hawaiian High Adventures Pflugerville, TX 2014-2015
Aloha Event Center Pflugerville, TX 2014-2015
Hawaiian Falls White Settlement, TX 2014-2015
Hawaiian High Adventures White Settlement, TX 2014-2015
Aloha Event Center White Settlement, TX 2014-2015
Quarry Park Adventures Rocklin, CA 2016-2018

In Desperate Pursuit of a Solution

As told by David Busch

Dave and Julie Busch (pictured above with son, Brian) owners of Busch Ltd., have been keeping families safe since 1972. Here’s why they are driven to do something about the drowning epidemic and why they believe the BLUEFOX-Lifeline Wristcomputer is the answer to reducing water emergencies.

“I have been working hard to keep families safe since 1972. That was the year I was hired at Worlds of Fun in Kansas City. At the time, the 220-acre theme park was only the seventh park of its kind in America. Ten years later, Oceans of Fun, became the fifth water park in the USA. Since that June day in 1982 when we opened Oceans of Fun (Jan and Dean performed Surf City, USA), I have been in a relentless search to find a solution to prevent drowning. My pursuit of a solution became even more serious when I personally experienced the damage drowning causes.”

The Busch Family Knows the Devastation of Drowning and Near Drowning

Three-Year Old Kimberly

On a beautiful spring day in 1979, Kimberly, the three-year-old niece of Julie Busch, fell into an unattended swimming pool at her home. Although Kimberly survived, the near-drowning incident resulted in severe brain damage. Kimberly has required around-the-clock care every day of her life for the past 40 years.

We can personally attest to the emotional pain still being experienced by those who are close to Kimberly. Life for the family was never the same after that day.

Had Kimberly been wearing a BLUEFOX-Lifeline Wristcomputer the incident would likely not have not occurred. The ongoing pain and suffering still being experienced by the family could have been avoided if a product like The BLUEFOX-Lifeline been available.

An 11-Year Old Boy

Since 1982, we have built and operated more water parks than any other company. During that period we have been responsible for the safety of over 55 million guests, and we’ve trained and certified over 30,000 lifeguards. Except for one heartbreaking occasion in 1993, our parks never experienced a guest fatality.

On that unforgettable day, despite having one of the highest ranked aquatic safety teams in the U.S. (according to Ellis and Associates), an 11-year-old boy drowned in four feet of water. This happened within yards of a manned lifeguard station in our wave pool. At the time of the incident, the wave pool had less than 20 swimmers and was fully staffed and supervised. Given the time of day, the total attentiveness of our highly trained lifeguards, and the presence of our entire water safety leadership team at the wave pool at the time of the incident, it just did not seem possible this could happen.

That young man would be 37 years old today, and hardly a day goes by that we don’t think about that incident.

We are sure the BLUEFOX-Lifeline Wristcomputer would have alerted our lifeguard of the water emergency and the entire tragedy never would have occurred.

Finally, a Solution to Prevent Drowning

“We’ve built and operated 22 water parks and have been responsible for the safety of over 55,000,000 guests. Having trained and certified 30,000 lifeguards, our parks were super safe and super family-friendly. For nearly 50 years we have been obsessed with the safety of our guests, but we know the unthinkable can occur, despite everyone’s best efforts. The BLUEFOX-Lifeline Wristcomputer is that extra layer of safety that makes it almost impossible for an undetected drowning incident to occur. We believe it’s the answer to reducing the epidemic of drowning and near drownings.”

I am certain it was a divine appointment through which I met Heinz. Heinz is recognized as one of the foremost underwater technology specialists in the world. Combining his unique talents with my lifetime of experience in the aquatics recreation industry, we have forged a great partnership. We both believe the time is now to do something about this silent and deadly killer known as drowning. It is our passion and purpose to help you avoid the trauma of a drowning incident. We look forward to serving you humbly and gratefully.

The BLUEFOX-Lifeline Wristcomputer

Swiss Made Technology for Safety

Products that bear the “Swiss Made” title must meet some of the most rigorous standards in the world to be granted this government authorized designation.

Each BLUEFOX-Lifeline Wristcomputer, precision-made at the company’s private laboratories in Hallwil, Switzerland, must meet even higher standards to earn the Deep-Blue certification.

Since 2008 over 10,000 emergency water safety bracelets have been used by over 300 facilities throughout Europe, Asia and Australia. The BLUEFOX-Lifeline comes with a two-year replacement guarantee.

Here’s the process each BLUEFOX-Lifeline Rescue Wristcomputer undergoes before leaving the testing lab:

  • Base Unit
    • Each PCB (Printed Circuit Board) with its microcontroller and pressure sensor, which is the brain of the BLUEFOX-Lifeline, is single tested
    • Each base and pressure sensor are computer-tested to meet several tolerances
    • The programming software, which allows you to set the depth and time the swimmer can be underwater, is transferred to the micro-controller
  • Capsule Unit
    • After filling the liquid gas in the capsule tank, the quantity is measured and monitored for 30 days
    • The ignitor, which initiates the release of the capsule and balloon, is tested
    • The capsule printed circuit board and the ignitor are fused into the aluminum casing and all functions are tested
    • The alarm is then triggered, and the noise level is measured to make certain the sound reaches between 95 and 105 decibels
    • The capsule, which contains both a non-toxic gas and balloon, is snapped into place in the base Unit
  • The complete unit is now ready for final testing. The BLUEFOX-Lifeline is again connected to the computer to confirm all systems meet specifications
  • After extensive tests in a specially made air pressure chamber, the BLUEFOX-Lifeline, the sensor and the programming software are re-tested to guarantee that pressure tolerances are maintained, and the software is stable
  • Upon completion of these steps the BLUEFOX-Lifeline is attached to its rugged wristcomputer, granted the Swiss Made designation and is ready for your use

As you can see, to earn the Swiss Made certification and to meet Blue-Fox standards, each precision-made BLUEFOX-Lifeline is tested time-and-again over an approximate 45-day period.


The BLUEFOX-Lifeline and Guardian-Lifeline water safety products will not take the place of effective supervision, lifejackets and safety measures recommended or mandated by local regulations.

Inventory is limited so kindly order today.