Drive of the fluid or electric type with a control

Details Drive of the fluid or electric type with a control Drive of the fluid or electric type with a control

1995-03-21

1996-10-01

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

91459, 92 88, 92137, F15B 1316, F01B 2900

Patent

active

055602754

ABSTRACT:
The present invention relates to a drive of the fluid or electric type having a device for controlling an element for transmitting a driving force to a reciprocating or otherwise moveable or displaceable element and an arrangement for damping the driving force at at least one end of the element's travel. The driving force element is at least single-acting, and the drive may also include mechanical shock absorbers and sensors arranged in the area of the ends of travel. In order to achieve an especially soft striking or contact at the end of travel position of the driving force element, the control device includes a counter-pulse module which, via a pre-positioning sensor associated with at least one movement direction, causes a chronologically settable changeover from a previously flowed-through or activated first switching element associated with a first end of travel position to a previously unactivated second switching element associated with a second end of travel position.

REFERENCES:
patent: 2944524 (1960-07-01), Brandstadter et al.
patent: 3664234 (1972-05-01), Simons et al.
patent: 4450753 (1984-05-01), Basrai et al.
patent: 4628499 (1986-12-01), Hammett
patent: 4896582 (1990-01-01), Tordenmalm et al.
patent: 4901625 (1990-02-01), Bussan et al.
patent: 4915281 (1990-04-01), Berger et al.
patent: 5230272 (1993-02-01), Schmitz
patent: 5347914 (1994-09-01), Kinoshita et al.

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