1
Metzner Robert G: Automatically controlled transportation system. May 22, 1973: US3734433 (37 worldwide citation)

A transportation system is disclosed in which vehicles travelling along a track or roadway are automatically spaced in response to timing and speed controlling systems so as to assure proper spacing of intersecting vehicles. Vehicles energize timing elements which apply signals to the vehicles to ac ...


2
Metzner Robert, Dashew Stanley A, Varney Justin A: Resilient gripping railway traction system. Security Pacific National Bank, March 14, 1972: US3648617 (21 worldwide citation)

Apparatus for use with a vehicle which runs along a track to increase the traction of the drive wheels so they do not slip when starting or climbing hills. One traction increasing apparatus includes an extra track member for increasing the distance between upper and lower track surfaces that support ...


3
Fields Gerald Martin, Metzner Robert Gerson: Hybrid car with electric and heat engine.. Hybricon, September 19, 1979: EP0004194-A1 (9 worldwide citation)

A car having a heat engine (14) driving a set of front wheels (5A), storage batteries (12) and electric motors (1) driving a set of rear wheels (5). Battery charging power is derived from the electric motors (1) acting as generators, and the battery charging rate is selected by the operator. Also in ...