US Patent No: 5,215,111

Number of patents in Portfolio can not be more than 2000

Method of performance improvement for an I/P servo

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Abstract

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A pneumatic servo comprises a motor having a shaft for rotation in response to an electrical signal. A cam is connected to the shaft for rotation therewith. The cam has an outer profiled periphery and opposite sides. A pneumatic nozzle having an opening for directing a flow of gas toward one side of the cam near the periphery, obscures the flow by different amounts as the cam rotates to create a back pressure in the nozzle comprising a pneumatic signal. A curved projection engages an opposite side of the cam, the projection being aligned with the nozzle opening and reducing oscillation excursions of the servo at gas pressures in the nozzle of above 12 psi.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ELSAG INTERNATIONAL B.V., A CORP. OF THE NETHERLANDSNEW ORLEANS, LA207

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dippert, Raymond J Cleveland, OH 1 0
Hall, II George R Geneva, OH 13 109
Smith, James M Roseville, MI 24 238
Stevenson, Thomas E Houston, TX 3 18

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ELSAG INTERNATIONAL B.V., A CORP. OF THE NETHERLANDS (1)
4,610,263 Pneumatic servo assembly for an electro pneumatic converter 4 1985

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