192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1979-08-09
1981-12-22
Krizmanich, George H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 0098, 192 12C, 74665D, 180308, F16D 6704
Patent
active
043066402
ABSTRACT:
A multi-speed hydrostatic drive is disclosed. The drive comprises the combination of a drive unit having at least one output connectable to a motive member and at least first and second inputs. A clutch unit is connected to the first drive unit input, and a first fixed displacement hydraulic motor is connected to the clutch unit so as to drive the drive unit first input through the clutch when the clutch is engaged. A brake unit is connected to the second drive unit input. A second fixed displacement hydraulic motor is connected to the brake unit so as to drive the drive unit second input when the brake is disengaged. A variable displacement hydraulic pump is also provided. A hydraulic circuit delivers the pressurized fluid to the first and to the second hydraulic motors to provide a relatively low speed, high torque drive. Alternatively, the hydraulic circuit can be set to deliver pressurized fluid to the second motor only to provide a relatively high speed, low torque drive to the motive member.
REFERENCES:
patent: 2796317 (1957-06-01), Valenti et al.
patent: 2826255 (1958-03-01), Peterson
patent: 2833382 (1958-05-01), Murray et al.
patent: 2860713 (1958-11-01), Peterson
patent: 2949817 (1960-08-01), Feindler
patent: 3460656 (1969-08-01), Swanson
patent: 3683719 (1972-08-01), Gros
Krizmanich George H.
Lambert Brake Corporation
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