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1. (WO1979000723) PRESSURE MODULATING SELECTOR VALVE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1979/000723 International Application No.: PCT/US1979/000073
Publication Date: 04.10.1979 International Filing Date: 09.02.1979
IPC:
F16D 48/02 (2006.01) ,F16D 48/04 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
D
COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
48
External control of clutches
02
Control by fluid pressure
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
D
COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
48
External control of clutches
02
Control by fluid pressure
04
providing power assistance
Applicants:
Inventors:
Priority Data:
88467508.03.1978US
Title (EN) PRESSURE MODULATING SELECTOR VALVE
(FR) SOUPAPE SELECTRICE A MODULATION DE PRESSION
Abstract:
(EN) A selector valve (10) selectively communicates pressurized fluid from an inlet (13) to an outlet (14) and is adapted to be connected to a clutch (16) of a transmission. The selector valve (10) comprises a spool (12) normally blocking communication between the inlet (13) and outlet (14), a selector piston (17) responsive to a control signal moves towards the spool and a load piston (23) reciprocally mounted in the selector piston (17) and adapted to be moved thereby to control movements of the spool. A modulating orifice (35) is interconnected between the outlet and the load piston (23) to control movements of the spool for modulating fluid pressure in the outlet to a predetermined level.
(FR) Une soupape selectrice (10) fait communiquer de maniere selective un fluide sous pression d"une entree (13) a une sortie (14) et est connectee a un embrayage (16) d"une transmission. La soupape selectrice (10) comprend une bobine (12) qui normalement empeche la communication entre l"entree (13) et la sortie (14), un piston selecteur (17) sensible a un signal de commande se deplace vers la bobine et un piston de charge (23) monte dans le piston selecteur (17) avec un mouvement alternatif par rapport a ce dernier et adapte pour commander, par l"intermediaire de ses deplacements, la bobine. Un orifice de modulation (35) etablit la communication entre la sortie et le piston de charge (23) pour commander les mouvements de la bobine en vue d"ajuster la pression du fluide a la sortie a une valeur predeterminee.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)