Lead screw linear actuator

Details Lead screw linear actuator Lead screw linear actuator

1978-11-16

1980-11-11

Husar, C. J.

Machine element or mechanism

Gearing

Directly cooperating gears

128DIG1, F16H 120

Patent

active

042325625

ABSTRACT:
A linear actuator which can apply high forces is described, which includes a reciprocating rod having a threaded portion engaged by a nut that is directly coupled to the rotor of an electric motor. The nut is connected to the rotor in a manner that minimizes loading on the rotor, by the use of a coupling that transmits torque to the nut but permits it to shift axially and radially with respect to the rotor. The nut has a threaded hydrostatic bearing for engaging the threaded rod portion, with an oilcarrying groove in the nut being interrupted.

REFERENCES:
patent: 966128 (1911-06-01), Payne et al.
patent: 1988480 (1935-01-01), Campkin
patent: 2067819 (1937-01-01), Bell
patent: 2446393 (1948-08-01), Russell
patent: 2508253 (1950-05-01), Haggardt
patent: 3278774 (1964-10-01), Roller et al.
patent: 3556679 (1971-01-01), Middlebusher et al.
patent: 3979999 (1976-09-01), Emenaker
patent: 4145165 (1979-03-01), Perkins et al.
patent: 4150925 (1979-04-01), Perkins

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