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Generated: December 16, 2017

DrugPatentWatch Database Preview

Details for Patent: 3,800,534

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Summary for Patent: 3,800,534

Abstract:An emergency hydraulic power supply for an aircraft or the like, including a hydraulic pump arranged to be driven by a turbine in turn driven by hot gas from a decomposition chamber, a fuel pump driven by the turbine for supplying fuel to the decomposition chamber, primary flow control valve means in the pump outlet for controlling fuel flow responsive to turbine speed, an ignition chamber communicable with the decomposition chamber and having a start grain for initiating turbine operation to start the fuel pump, a secondary control valve in the pump outlet, and control means for sensing turbine speed and opening the secondary valve when the turbine attains a speed indicating the start grain has about burned out, and closing the secondary valve in the event that the turbine attains a speed indicating the primary flow control valve means is inoperative to control turbine speed.
Inventor(s): Kacek; Donald J. (Rockford, IL)
Assignee: Sundstrand Corporation (Rockford, IL)
Application Number:05/238,352
Patent Claim Types:
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Composition; Device;

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International Patent Family for Patent: 3,800,534

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Germany2313827► Subscribe
France2177786► Subscribe
United Kingdom1392271► Subscribe
JapanS4913899► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Harvard Business School
Johnson and Johnson
Federal Trade Commission

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