Hybrid electro-mechanical-hydraulic drive system, and method of

Details Hybrid electro-mechanical-hydraulic drive system, and method of Hybrid electro-mechanical-hydraulic drive system, and method of

1993-09-10

1995-01-17

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

744248B, 254 98, 425145, 425146, F16H 2520, B29C 4577

Patent

active

053817028

ABSTRACT:
An electro-mechanical-hydraulic drive mechanism (10) for moving a lead (11) relative to a support (12) includes an electric motor-driven element (14) and a hydraulic reaction element (15). The two elements are arranged mechanically in series between the lead and the support. The motor-driven element may be operated independently of the reaction element to move the lead relative to the support when the reaction element is held at a fixed displacement. The two elements may be operated cooperatively to move the load when the motor-driven element is operated at a controlled velocity to pressurize the reaction element, and the reaction element is operated by controlling its pressure.

REFERENCES:
patent: 3314107 (1967-04-01), Honstrater
patent: 3825235 (1974-07-01), Schwertfeger et al.
patent: 5092753 (1992-03-01), Kumamura et al.
patent: 5102587 (1992-04-01), Kumamura et al.
patent: 5217725 (1993-06-01), Inaba et al.

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