Directory:Hydristor Corporation

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&lt&lt A Congress:Top 100 Technologies -- RD Energy Technology &gt&gt

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There was an error working with the wiki: Code[2]&lt&lt An Directory:X Prize:Automotive Contender &gt&gt

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Image:Hydristor color diagram jp70.jpg

'The Hydristor technology, invented by Thomas Kasmer, is an infinitely variable vane hydraulic pump/motor -- basically a simplified automatic transmission with no gears, with regenerative storage capability.'

Hydristor : The name "Hydristor" is a blend of the words "hydraulic" and "transistor". Just as its name forebear the transistor has many diverse uses in electronics, the hydristor is set to become a similarly versatile component in hydraulics.

The company seeks to present a means to convert existing non-hybrid vehicles into a highly efficient hydraulic hybrids, doubling or tripling the mileage and drastically cutting emissions (to 1/4). The retrofit will also increase the performance of the vehicle, enabling any car to go from 0 to 60 in three seconds, using energy from deceleration as well as motor power stored in a pressure tank.

With all mechanisms in place, Kasmer expects that the fuel-to-motion efficiency will be as high as 80%, compared to the low 30% range of present. The engine will last twice as long, because it can operate in its optimal range, and it doesn't have to work as hard. Brake wear will be negligible.

The Hydristor has been called 'the holy grail of transmissions' in the auto industry.

: "Like Henry Ford's assembly line, this is one of those 'one time opportunities' that history presents." -- Tom Kasmer (Oct. 22, 2007)

Hydristor is presently looking for $150,000 USD to build a first working prototype of the hydraulic hybrid retrofit system. (Dec. 1, 2007)


Official Website


Audio & Video Interviews with Media



Download - On Oct. 22, 2007 Congress:Founder:Sterling D. Allan conducted a live, 1-hour interview with Tom Kasmer as part of the Free Energy Now radio series.

Latest Developments

Nov. 16, 2007
Image:Hydristor see-through diagram 95x95.jpg

Directory:Fuel Efficiency Retrofits / Directory:Hydraulics > Directory:Hydristor Corporation - Inventor, Tom Kasmer, shares an overview of his infinitely variable hydraulic pump technology for both improving fuel economy on vehicles, as well as integrated into a heat pump generator system for harvesting solar and other environmental heat differentials as a primary energy source.

How it Works

The Hydristor operates by converting shaft rotation and power into hydraulic pressure and flow, and/or the reverse. It can seamlessly merge several flows of hydraulic power with a shaft rotation. For example, a wind turbine driven Hydristor can divert a

controlled level of hydraulic power to operate a Hydristor based hydraulic motor to run an A.C. generator at synchronous speed while sending the excess wind power to a presure storage tank, accounting for a rising pressure in the tank. When the wind momentarily drops, the pressure storage can seamlessly flow into the motor driving the generator to continue the smooth A.C. operation.

The hydristor unit will come in 4-6 basic sizes and will install inside the bell housing, replacing the transmission and clutch. The engine will no longer be a direct drive to the wheels, through the transmission, but will keep the hydristor unit adequately charged, and the hydristor unit will drive the wheels. The unit will store the energy from the engine and from braking and from going down hill, to be used for acceleration and speed maintenance. The engine could even be turned off for stretches of driving, while the vehicle runs on the stored energy.

Kasmer also envisions pneumatic air pressure storage systems being employed that would enable up to 40 miles of travel without the engine running at all. A ten gallon air tank compressed to 5,000 psi is enough energy to propel a vehicle 40-50 miles. The Hydristor systems are being engineered to hold 10,000 psi.

Another system Kasmer intents to include is a heat pump that will harvest the heat from the exhaust and radiator, to convert it into electricity. In another industry, this heat pump principle could also be used for electricity generation via the temperature difference between the ocean and the air. Kasmer thinks this could be done at a price that would compete with conventional energy sources.

One Hydristor hydraulic unit will handle up to ten separate, variable demand tasks simultaneously.


Kasmer expects that converting a vehicle in to a Hydristor hybrid will cost around $3,000 - $3,500 USD. With gas savings, the return on investment will be about one year.


Far greater fuel efficiency (2-3 times).

Reduced emissions (1/4)

Engine last much longer

Lower maintenance

Minimal brake wear


The first prototype was tested at Tecumseh Test Lab in Michigan in 1997. The test was witnessed by Mr. Bill Collins, a retired automotive transmission engineering manager and an advisor to Mr. Kasmer. The test was brief at Mr. Kasmer's request and achieved 94.7% overall efficiency including fluid bypass. Present technology includes numerous improvements. Kasmer expects that models under design and build will reach the 98% mark.


Thomas Kasmer has received the following patents in the development of the Hydristor:

6022201 - Hydraulic vane pump with flexible band control

6527525 - Hydristor control means

6612117 - Hydristor heat pump

The following are current patent applications:

20050036897 - Rotary vane pump seal


Company: Hydristor Corporation

The company has spent around $150,000 on patent protection.

The technology is now to the point that a serious team can be wrapped around it to bring it to market.

A contract has been signed with an Asian interest to install a 4x4x4" hydristor module on electric scooters, to double their range by taking care of the start-out acceleration energy via regenerative braking.

Hydristor is presently looking for $150,000 USD to build a first working prototype of the hydraulic hybrid retrofit system. (Dec. 1, 2007)

The company is also developing a drive system for snowmobiles.

Inventor: Thomas Kasmer

Tom Kasmer has been pursuing this technology full-time for seventeen years.

Vision Statement

On Nov. 16, 2007, Thomas E. Kasmer wrote:

I have invented a simple mechanical hydraulic infinitely variable pump which has efficiencies in the high 90s.

Image:Hydristor see-through diagram 300.jpg

Attached is a Hydristor variable transmission intended for the Asian market to be added to the drive train for electric 2 and 3 wheel scooters. I expect a doubling of the existing range of a typical scooter.

I am also working on an automotive retrofit where the OEM torque converter or clutch is replaced by a Hydristor and hydraulic pressure tanks are located where practical. This retrofit converts any vehicle into a full hydraulic hybrid with the existing engine cycling on and off, nevermore driving the wheels which are now powered by the pressure tanks. This system will double or treble the fuel economy while quartering the CO2 emissions.

All the existing vehicles in the World can be converted within a 6-10 year period and the tipping point for global disaster can be averted. A massive adoption to this retrofittable technology will convince all OEM vehicle manufacturers to convert to this system and scrap the existing ineffective transmissions. In a retrofit, the existing transmission will be gutted of parts and the empty case will now simply hold up the engine. In new vehicles, typically 200 pounds of weight will be eliminated and a cost saving of several thousand US dollars will result. One would think the auto companies would listen! Not so!

Another capability is the Hydristor heat pump/generator. This Hydristor package will use Freon type technology which currently returns 300% of the input electrical power in the form of low grade environmental solar and geothermal heat. The Hydristor will raise the return from 3 times to fully ten times. The energy harvested from the air, water or ground will be sent to an available Stirling engine which converts 40% of the applied heat energy at 300 degrees F into direct shaft horsepower. The Stirling shaft now drives an electrical generator to create 3.5 Kw output per 1 Kw input. The last step is to 'pull the wall plug' and quickly plug the output into the input and the system is self sustaining with useable energy left over. You now have 'free energy' with true Zero emissions.

Individual units could be located at homes, schools, and anywhere completely off the grid. Large arrays of Hydristor heat exchangers could be sited several hundred yards offshore submerged and protected from severe weather and form local grids generating free, true zero emission electricity harvesting excess ocean heat and the lowering of the ocean's temperatures will help tame the horrible weather.

I have a real solution and I must reach the people of the World. I plan to enter the Automotive X-Prize contest and I believe I can raise the economy of a Hummer or Expedition to over 100 Mpg with Hydristor retrofits. I intend to win the first prize. I am looking for a sponsor as I have done all my work as an individual with very limited means.

A Hydristor heat pump/generator can be configured as a stand alone water condenser/refrigerator-freezer and electrical source sited out in the middle of deserts or anywhere moderately temperate harvesting the Sun's heat to operate and separately harvesting moisture from the 'rivers of moisture' everywhere on Earth. A very big number of crises can be immediately solved by this simple and lowly pump.

- - - -

On Nov. 18, 2007, Thomas E. Kasmer wrote:

The heat pump is theoretical but the engineering is sound. Taking the example of conventional heat pump operation, a gain of 3 times is easily achieved, called a 'coefficient of performance' or COP. In plain language, if you input ONE Kw of electrical energy to the electric motor driving a conventional Freon heat pump, you can 'harvest' or 'capture' the low grade (temperature) heat equivalent in BTUs in the amount of 3 Kw for a gain of energy.

Simply put, one Kw of electricity diverts 3 Kw of heat from the air or water, said heat put there by the Sun, or geothermal from the Earth's core.

There are 4 main losses in the conventional heat pump technology. First there is the efficiency of the existing pump technology. Second is the significant loss of mechanical work energy associated with the expansion of the Freon. Last is the molecular friction of the Freon molecules rushing through the expansion valve (a tiny hole in a disk) at supersonic speeds. There is also an impediment to variable operation of the pump to allow for source and load requirements which change because the existing pump is fixed displacement. The system is cycled on and off to adjust for variable conditions. This is like driving your car using either a pedal to the floor or lifting your foot off the pedal and varying the proportion of that on/off gas pedal to maintain 30 Mph in city driving. Talk about inefficiency and very bad gas mileage.

The Hydristor heat pump technology addresses all 4 of these issues. First, the pump efficiency of the Hydristor is significantly better than the old way. Second, the Hydristor has 4 individually variable chambers and chamber one is the Freon pump. The compressed Freon is sent to the 'hot' heat exchanger which transfers the heat to a Stirling engine where 40% of the BTUs are converted to rotating shaft horsepower. Most of the heat is removed from the Freon but the system pressure is the same throughout this section. Instead of sending the cooled Freon at the full system pressure to the expansion valve, it is instead sent to Hydristor chamber 2. The Freon is held inside the Hydristor and each of chambers 2,3 and 4 expand as the hydristor rotates, turning the expansion of the Freon directly into hydraulic motor torque which is directly applied to the common rotor so that the energy needed from the electrically driven motor is directly reduced by the expansion motor torque. Since there is no significant Freon molecular friction due to the absent expansion valve, that loss is also eliminated. The Hydristor's ability to individually vary the rotational displacement of the 4 chambers means no starting and stopping. The 4 chambers are individually adjusted by the control system so that the optimum performance is achieved.

My experience, training both as a scientist and practicing engineer and my 'gut feel' tell me that I will see a 3-4 fold improvement in the COP of the Hydristor Freon cycle resulting in an energy gain of at least 10 times the input electrical energy. The last part of the Hydristor Freon generator is to add an electrical generator to the Stirling output shaft and create an electrical output.

To recap, one Kw of external power will harvest 10 Kw of heat equivalent energy and the Stirling will transform that energy into 4 Kw of mechanical shaft power driving the output generator which in turn generates 3.5 Kw of electrical power. Once started, the plug to the power company is pulled and the output is quickly plugged into the input to make the Hydristor system self sustaining with some energy left over to do work. The end result of the Hydristor freon generator is to harness the Sun's daily heat influx and harvest it from the air or water temperature 24/7 to create a continuous power source requiring no fuel and making absolutely zero emissions.

An array of the hydristor heat exchangers located several hundred yards offshore deep enough to be insulated from violent storms will drive a localized community power grid and will also absorb the excess heat in the Oceans and lakes which are driving the horrible weather and storms. This will have a double whammy effect by enabling the shutdown of existing air burning generation, long line transmission and nuclear generation.

A note about nuclear generation is that it does contribute to global warming because of the huge amounts of cooling water discharged directly into the environment. In the words of Dr. Phil, 'what are they thinking?'

The Hydristor heat pump has another convenient feature. The 'cold' exchanger is very cold, like -40. This will condense huge amounts of water directly from the air. The Earth is covered by moving air currents which are also 'rivers of moisture' This is true everywhere it is above freezing. This distilled water provides an absolutely pure source of water in any locality and for free! Large arrays of such Hydristor systems could be established to irrigate farmland and provide municipal water sources. If you dry the air out in an area, the air will automatically move more moist air in to replace it.

The Hydristor is a 'technological creature of nature' that harvests the daily solar heat, harnesses it for man's use and the end product of all this is the exact same low grade heat provided by the Sun and the heat radiates off into space in concert with Mother Earth. It can even support life by concentrating a water supply.

[This portion of Ken's comments about Directory:Space Based Solar Power are posted elsewhere.]

I could go on but I would like to summarize. The human race must start thinking of the planet as a spaceship with limited resources and room to dump or hide things. If we don't react positively to this fact, the future of our kids and especially our grandkids is doomed. The kids can always tear up the national debt papers and start over. They cannot fix the Earth. That is our job and the time is now!



The Hydristor won a Merit Award in the Emhart / NASA 2006 Tech Briefs contest. The competition is sponsored by Emhart Technologies Inc., ABP International and NASA Tech Briefs magazine, and co-sponsored by Comsol Inc. and Solidworks Corp. Tom entered in the "Transportation" category, whose requirement was for "a mechanical or electromechanical design that improves the functionality, performance, or cost basis of transportation products(s)".

Emhart Teknologies Presents “Create the Future??? 2006 Design Contest Winners - (NASA Tech Briefs - April 1, 2007)

Contest Web Site

In the News - Audio & Video Interviews with Media

Image:Hydristor see-through diagram 95x95.jpg

Directory:Electrical Grid > Transmission of Grid Power Using Pressurized Air - Instead of transmitting electricity over high-voltage cables, Kasmer suggests transmitting power via high-pressure air, which would be pressurized and depressurized via his infinitely variable pneumatic conversion technology, which would serve as the transformers in the system. (PESN Jan. 23, 2008)

CATIA Makes Possible a Solution to Global Warming - (COE NewsNet - March 2007 [second article on page])

Hydristor Pushing Harder to Modernize Hybrid Vehicle Technology - (''Life Line Earth - January 8, 2007)

Gas Saver Or Tailpipe Dream? - (BusinessWeek - September 18, 2006)

Hyping the Hydristor - Vestal man travels across country to promote new form of auto transmission. (Press & Sun Bulletin Binghamton, NY - May 8, 2005)

The Future Of The American Automobile? You Say Hydrogen & I Say Hydristor - (Conscious Consumers' Network - Nov 11, 2004)

This Week in Free Energy with Sterling D Allan - (Sunday, Sept 12, 2004)

Variable-Volume Pump-Motor Departs From Convention (pdf) - (Hydraulics & Pneumatics (originally Fluid Power Web - July 2004))

A Silver Lining to High Gas Prices (pdf) - (''Hydraulics & Pneumatics (originally Fluid Power Web / Editorial - June 2004))

Tom Kasmer and the - ( - originally published March 1, 2003)

Conceptual Vehicle Inventor - ( - originally published March 1, 2003)

Variable Hydraulic Pump - (Design News - September 18, 2000)

'Hydristor' to vanquish vane pump problems - (Design News - September 1, 2000)

Other Coverage

Hydrostatic CVTs - "CVT - Continuously Variable Transmission" web site - February 2004

Tom Kasmer (Coast to Coast AM September 11th, 2004)


See Talk:Directory:Hydristor Corporation


Thomas Kasmer

Hydristor Corp.

Box 779

Johnson City, NY 13790

phone: 607-206-8960

Skype: Hydristor

See also


Directory:Fuel Efficiency Retrofits

Directory:Hybrid Vehicles

Directory:Fuel Efficiency


Directory:Fuel Efficiency - main index

News:Fuel Efficiency

Directory:Fuel Efficiency Vehicles


Directory:Energy from Roadways

Directory:Solar Pavement

Directory:Power-Generating Shock Absorber


Directory:Fuel Efficiency Additives

Directory:Alternative Fuels

Directory:Fuel Pre-Heating for Mileage Improvement

Directory:Fuel Efficiency Hydrogen Injection

Directory:Hydroxy or HHO Injection Systems

PowerPedia:Hydroxy Generators for Fuel Efficiency

Directory:Running Vehicles on Water

Directory:Clean Fuel Conversions

Directory:Spark Plugs

Directory:Hypermiling -- Driving Tips for Better Mileage

Directory:Boron Additive


Directory:Electric Vehicles

Directory:Hybrid Vehicles

Template:Electric Vehicles footer - more EV listings


Directory:Fuel Efficiency Retrofits


Directory:Air Cars

Directory:Ambient Air Engines






Directory:X Prize:Automotive

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