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Patent Searching and Data


Title:
HIGH-PRESSURE AIRCRAFT PNEUMATIC DEICER
Document Type and Number:
WIPO Patent Application WO2002034621
Kind Code:
A3
Abstract:
An aircraft fluid delivery device (10) including a piston assembly (20), a pilot assembly (22), and a control assembly (24). The control assembly (24) includes non-contact proximity sensors (S1, S2) that sense the positionof the piston (28) and a controller (80) that controls the pilot assembly (22), and thus the piston assembly (20), based on information received from the sensors (S1, S2). Specifically, the controller (80) energizes a solenoid (72) to cause fluid to flow through the pilot assembly (22) into a large portionof the piston chamber (30) during the compression stroke of the piston (28). When the solenoid (72) is deenergized during the return stroke of the piston (28), or when the delivery device is electrically turned off, an ejector (60) in the pilot assembly (22) generates a vacuum on the pressure side of the wide portion of the piston chamber (30).

Inventors:
KUGELMAN MICHAEL M
PUTT JAMES
Application Number:
PCT/US2001/045282
Publication Date:
November 07, 2002
Filing Date:
October 23, 2001
Export Citation:
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Assignee:
GOODRICH CO B F (US)
International Classes:
B64D15/16; B64D41/00; F04B9/12; F04B9/125; (IPC1-7): B64D15/16; F16K31/383; F16K37/00
Foreign References:
US5271598A1993-12-21
US5906222A1999-05-25
EP0539723A11993-05-05
US4726282A1988-02-23
DE3143482A11983-05-11
US3263702A1966-08-02
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