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Unlimited Multi-stage Transmission) is a unique and rare technology to differ any other types of former transmissions. How to work UMT;
Biting symmetrically plural gears of input and output shaft. If engine runs, rotating the input gears that is fixed to the input shaft Combining optionally output shaft and gear with pistons or sliding friction collar that can be moved by hydraulic pressure Then, the engine power of input shaft can be transmitted to output shaft with selecting of output gear.

Types of UMT can be sorted by:

Single oilway type controls pistons of friction bars via one oilway Multi oilway type controls pistons of friction bars via plural oilway that is connected each pistons Sliding friction collar type can select suitable speed for moving collar that is located between output shaft and inner circle of gears.

Versus former transmission, UMT's strengths are:

The manufacturing cost is very cheap because of simple structure
The weight is lighter than any others
The shock of changing speed don't exist almost
The improvement of mileage is very sure because of increasing the stages freely
The efficiency of transmitting engine power is high
The instantaneous acceleration reaches the level such as MT
UMT can be installed in medium or large sized commercial vehicles as well as passenger vehicles
UMT can be produced both FWD or RWD
UMT can be adapted for electric vehicles that will drive future car markets such as hybrid vehicles
The cause of malfunction is very rare because of simplicity of the control unit
UMT has impressive extensions because variety options such as torque converter, one-way clutch and so on can be removed or attached according to manufacturer's purpose.

Therefore, UMT is a disruptive technology to former transmission. Because UMT can't be appeal to only AT consumers who want user convenience but also MT consumers who want mileage and performance.
UMT is an original technology that is applied a perfectly different type from former transmission technologies and is the next generation transmission that can cover weaknesses of the previous.
Because of such superior advantages, UMT will drive the transmission market for scores of years.
UMT's application will be focused on passenger cars at early stage, but be adapted, hereafter, to large commercial vehicles and powertrain for other industry such as pump, generator and so on. So its pervasive effect is expected very extensive.
Especially, inventor of UMT hold the other technologies for producing UMT that is auxiliary technologies such as hydraulic pump, one-way clutch.

< Comparison of Transmission Technologies >

	UMT	MT	AT	CVT	AMT	ASG	DCT
Efficiency of transmitting power	◎	◎	×	○	○	○	○
Capacity of transmitting power	◎	◎	◎	×	○	○	◎
Volume and weight	◎	◎	○	○	○	○	△
Manufacturing cost	○	◎	△	△	△	△	×
Durability	◎	○	○	△	△	○	○
Shock of changing speed	○	×	△	◎	△	○	△
Facility of layout	◎	◎	△	△	△	△	△
Commercializing level	×	◎	◎	○	△	△	△
User convenience	◎	×	◎	◎	△	○	◎

(◎ : Excellent, ○ : Good, △ : Average, × : bad)

UMT is superior to other technologies except for commercializing level.

UMT is expected the manufacturing cost to reduce at least 10% versus MT because of small volume and simplicity of its structure and the selling price to increase more than AT because of its prominent performance. Hence, it is forecasted that the UMT manufacturer accomplishes his operating income twice at least.