Hydraulic booster device for linear actuator

Details Hydraulic booster device for linear actuator Hydraulic booster device for linear actuator

1992-01-09

1993-04-27

Look, Edward K.

Motors: expansible chamber type

With signal, indicator or inspection means

92 62, 92113, 92162R, 91DIG4, F01B 2526

Patent

active

052052001

ABSTRACT:
A linear actuator used in moving, for example, gate valves, sluice gates and the like, wherein an increased thrust is required during initial movement. The present invention includes, as part of the linear actuator, a novel booster piston movably disposed about a piston rod; further included on the booster piston is a thrust column disposed radially between the booster piston and the piston rod so as to define an annular fluid channel for enabling fluid to move upwardly so as to contribute a substantial additional thrust component to move the primary piston.

REFERENCES:
patent: 2688313 (1954-09-01), Bauer
patent: 2918903 (1959-12-01), Geyer
patent: 3168853 (1965-02-01), Prince
patent: 3208354 (1965-09-01), Topinka
patent: 3403365 (1968-09-01), Richards
patent: 4218960 (1980-08-01), Bourges

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