4. Automatic temperature and humidity regulation
  5. Thermostatic
  6. With pressure control

Robert H. Perkinson

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Backup governing system for a variable pitch propeller

Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition... – Impeller rotation speed responsive
Reexamination Certificate

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Cyclic actuation system for a controllable pitch propeller...

Fluid reaction surfaces (i.e. – impellers) – Method of operation
Reexamination Certificate

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Gas turbine engine blade tip clearance apparatus and method

Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade edge and static part
Reexamination Certificate

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Gas turbine engine blade tip clearance apparatus and method

Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade edge and static part
Reexamination Certificate

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Hybrid fuel metering system

Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent

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