US 2013/0152293 A1Published application

Fluid-operated actuator assembly

AssigneeDefond Components Limited

InventorsKwok Chiu YU, Kai Chi CHAN, Alec Kam Lek QUAN

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Abstract

A fluid-operated actuator assembly has a valve with an inlet for connection to a pressurized fluid source, a bi-stable electromagnetic device for operating the valve, which has a first state closing the valve and a second state opening the valve, a hydraulic actuator, and an electronic control circuit. The hydraulic actuator has an actuating member in a housing, the housing having a chamber on one side of the actuating member to which an outlet of the valve is connected for receiving fluid from the fluid source when the valve is opened, the actuating member for operation of the hydraulic actuator. The control circuit momentarily energizes the bi-stable electromagnetic device to the hydraulic actuator from the second state, back to the first state, to terminate operation of the hydraulic actuator.

Claims32

Dependent claims

A fluid-operated actuator assembly comprising:

a valve having an inlet and an outlet, the inlet being for connection to a pressurized fluid source;
a bi-stable electromagnetic device for operating the valve, the bi-stable electromagnetic device having a first state closing the valve and a second state opening the valve;
a hydraulic actuator comprising an actuating member in a housing, the housing having a chamber on one side of the actuating member to which the outlet of the valve is connected for receiving fluid from the fluid source when the valve is opened by the bi-stable electromagnetic device, the hydraulic actuator acting upon and moving the actuating member for operation of the hydraulic actuator;
and
an electronic control circuit for momentarily energizing the bi-stable electromagnetic device and changing the bi-stable electromagnetic device from the first state to the second state, operating the hydraulic actuator, and, subsequently, changing the bi-stable electromagnetic device from the second state to the first state, terminating operation of the hydraulic actuator.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/459,802Filed 30 Apr 2012
Priority: 19 Dec 2011
Published: 20 Jun 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

E03D 5/024
Operated mechanically or hydraulically also details such as push buttons, levers and pull-card therefor: operated hydraulically or pneumatically
A47K 13/10
Seats or covers for all kinds of closets: devices for raising and lowering ; Collapsible or rotating seats or covers
E03D 5/10
Special constructions of flushing devices , e.g. closed flushing system: operated electrically , e.g. by a photo-cell; also combined with devices…
F15B 11/08
Servomotor systems without provision for follow-up action ; Circuits therefor: with only one servomotor

Family

Application13/330,108Continuation in part · filed 19 Dec 2011
Application13/459,802Continuation in part
US 2013/0152292 A1Published application
US 9,228,334 B2Related patent
US 2013/0152293 A1This patent

From the US filing history. Foreign family members aren’t listed.

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