[en.wikipedia.org]
это зарегистрированная марка.
как это было в рекламе 1940 года.
[www.oldcarmanualproject.com]
----------------------------
это так для развития широты техкругозора.
------------------
The fluid coupling and torque converter was invented by the German engineer Foettinger in the early 1900s. For non-marine applications he licensed the development of the fluid coupling to the British engineer Harold Sinclair and his Fluidrive Engineering Co Ltd (now part of Voith AG). Following the development of the fluid coupling, Sinclair in turn licensed the fluid coupling, now also known as ‘Fluidrive Coupling’ to many companies including the Chrysler Corporation. Many automobile historians confuse Chrysler’s Fluid Drive with the Corporation’s so-called semi-automatic M5/M6 transmissions, which were marketed under various names as “Simplimatic” (Chrysler), “Tip-Toe Shift” (DeSoto), and “Gyro-Matic” (Dodge). Unfortunately, Chrysler itself contributed to the confusion by referring to both the standard-shift fluid drive and M6 installations indiscriminately as "Fluid Drive" in much of their marketing and sales literature. General Motors also used a fluid coupling for the full-automatic Hydramatic transmission, introduced for 1940.
--------------------
Полный автомат массово устанавливался- уже с 1939 года на Олдсмобиле и многих других авто мелкими сериями.
-----------------------------------------------------------------------------------
The fluid drive fluid coupling was also used in conjunction with Chrysler’s M6 Presto-Matic semi-automatic transmissions. The M6 was in reality a two-speed manual transmission with a conventional clutch mounted behind the same fluid coupling unit that was installed in straight Fluid Drive cars.

The M4 Vacamatic had two forward speeds and reverse. There was a manual Pull-Cable to lock out the underdrive in the early models. From 1949-1952, Dodge models with the conventional 3-speed Fluid Drive carried front fender emblems that said “Fluid Drive.” The M6 Models had emblems that proudly proclaimed “Gyromatic.”

In the 1941 brochure for Chrysler automobiles, a silhouette of the car's drivetrain was depicted against an outline of the car body, with the astonishing caption of an arrow pointing to the transmission: "Miracle Happens Here"! The transmission shown was an early variant (M4 "Vacamatic") of the later M6 transmission and was marketed to compete with the new Oldsmobile fully automatic, clutchless Hydramatic transmission, introduced in the fall of 1939 on 1940 Model year Oldsmobiles. The Hydramatic was embraced enthusiastically by consumers, and was installed in 45% of 1941 Model Oldsmobiles.
-------------------------------------------------------------------
в 1942 году был выпущен первый танк с "гидравлической муфтой" типа Тигр.
и уже в 1944 году на "Королевский тигр" устанавливается полностью
автоматизированная трансмиссия. Впервые в мире на серийных машинах.