Regulatable pump device

Details Regulatable pump device Regulatable pump device

1974-07-01

1977-05-24

Blix, Trygve M.

Fluid-pressure and analogous brake systems

With pump

303116, 303119, 417386, 417399, B60T 8087, B60T 1316

Patent

active

040251241

ABSTRACT:
A piston pump with a controllable stroke is described. It is a positive displacement type pump with several stages and also a continuous variable stroke. The pump piston is only effectively connected with the drive during the working stroke. For example, the pump serves particularly for controlling the braking force in an anti-locking system for vehicles. In every pump cycle it can vary the volume in the braking system, and thus the brake force, without letting fluid out of the brake system. It makes possible the amplitude control of brake pressure pulsations and a desirable brake pressure course. In addition, an anti-locking system with a special two-stage pump device is described. Furthermore, a hydraulic circuit of great utility for anti-locking systems is shown.

REFERENCES:
patent: 2936712 (1960-05-01), Gerpen
patent: 3032995 (1962-05-01), Knowles
patent: 3288538 (1966-11-01), Marcellus
patent: 3519311 (1970-07-01), Holden
patent: 3521934 (1970-07-01), Leiber
patent: 3524684 (1970-08-01), Skoyles
patent: 3645584 (1972-02-01), Leiber et al.
patent: 3695785 (1972-10-01), Vanderlaan

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